Bug Summary

File:jdk/src/hotspot/share/ci/ciEnv.cpp
Warning:line 1571, column 27
Value stored to 'opcode' during its initialization is never read

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name ciEnv.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -mthread-model posix -fno-delete-null-pointer-checks -mframe-pointer=all -relaxed-aliasing -fmath-errno -fno-rounding-math -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib/llvm-10/lib/clang/10.0.0 -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/libjvm/objs/precompiled -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -D __STDC_CONSTANT_MACROS -D _GNU_SOURCE -D _REENTRANT -D LIBC=gnu -D LINUX -D VM_LITTLE_ENDIAN -D _LP64=1 -D ASSERT -D CHECK_UNHANDLED_OOPS -D TARGET_ARCH_x86 -D INCLUDE_SUFFIX_OS=_linux -D INCLUDE_SUFFIX_CPU=_x86 -D INCLUDE_SUFFIX_COMPILER=_gcc -D TARGET_COMPILER_gcc -D AMD64 -D HOTSPOT_LIB_ARCH="amd64" -D COMPILER1 -D COMPILER2 -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/gensrc/adfiles -I /home/daniel/Projects/java/jdk/src/hotspot/share -I /home/daniel/Projects/java/jdk/src/hotspot/os/linux -I /home/daniel/Projects/java/jdk/src/hotspot/os/posix -I /home/daniel/Projects/java/jdk/src/hotspot/cpu/x86 -I /home/daniel/Projects/java/jdk/src/hotspot/os_cpu/linux_x86 -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/gensrc -I /home/daniel/Projects/java/jdk/src/hotspot/share/precompiled -I /home/daniel/Projects/java/jdk/src/hotspot/share/include -I /home/daniel/Projects/java/jdk/src/hotspot/os/posix/include -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/support/modules_include/java.base -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/support/modules_include/java.base/linux -I /home/daniel/Projects/java/jdk/src/java.base/share/native/libjimage -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/gensrc/adfiles -I /home/daniel/Projects/java/jdk/src/hotspot/share -I /home/daniel/Projects/java/jdk/src/hotspot/os/linux -I /home/daniel/Projects/java/jdk/src/hotspot/os/posix -I /home/daniel/Projects/java/jdk/src/hotspot/cpu/x86 -I /home/daniel/Projects/java/jdk/src/hotspot/os_cpu/linux_x86 -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/gensrc -D _FORTIFY_SOURCE=2 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-10/lib/clang/10.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -Wno-format-zero-length -Wno-unused-parameter -Wno-unused -Wno-parentheses -Wno-comment -Wno-unknown-pragmas -Wno-address -Wno-delete-non-virtual-dtor -Wno-char-subscripts -Wno-array-bounds -Wno-int-in-bool-context -Wno-ignored-qualifiers -Wno-missing-field-initializers -Wno-implicit-fallthrough -Wno-empty-body -Wno-strict-overflow -Wno-sequence-point -Wno-maybe-uninitialized -Wno-misleading-indentation -Wno-cast-function-type -Wno-shift-negative-value -std=c++14 -fdeprecated-macro -fdebug-compilation-dir /home/daniel/Projects/java/jdk/make/hotspot -ferror-limit 19 -fmessage-length 0 -fvisibility hidden -stack-protector 1 -fno-rtti -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -faddrsig -o /home/daniel/Projects/java/scan/2021-12-21-193737-8510-1 -x c++ /home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp
1/*
2 * Copyright (c) 1999, 2021, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#include "precompiled.hpp"
26#include "jvm.h"
27#include "ci/ciConstant.hpp"
28#include "ci/ciEnv.hpp"
29#include "ci/ciField.hpp"
30#include "ci/ciInstance.hpp"
31#include "ci/ciInstanceKlass.hpp"
32#include "ci/ciMethod.hpp"
33#include "ci/ciNullObject.hpp"
34#include "ci/ciReplay.hpp"
35#include "ci/ciSymbols.hpp"
36#include "ci/ciUtilities.inline.hpp"
37#include "classfile/javaClasses.hpp"
38#include "classfile/javaClasses.inline.hpp"
39#include "classfile/symbolTable.hpp"
40#include "classfile/systemDictionary.hpp"
41#include "classfile/vmClasses.hpp"
42#include "classfile/vmSymbols.hpp"
43#include "code/codeCache.hpp"
44#include "code/scopeDesc.hpp"
45#include "compiler/compilationPolicy.hpp"
46#include "compiler/compileBroker.hpp"
47#include "compiler/compilerEvent.hpp"
48#include "compiler/compileLog.hpp"
49#include "compiler/compileTask.hpp"
50#include "compiler/disassembler.hpp"
51#include "gc/shared/collectedHeap.inline.hpp"
52#include "interpreter/bytecodeStream.hpp"
53#include "interpreter/linkResolver.hpp"
54#include "jfr/jfrEvents.hpp"
55#include "logging/log.hpp"
56#include "memory/allocation.inline.hpp"
57#include "memory/oopFactory.hpp"
58#include "memory/resourceArea.hpp"
59#include "memory/universe.hpp"
60#include "oops/constantPool.inline.hpp"
61#include "oops/cpCache.inline.hpp"
62#include "oops/method.inline.hpp"
63#include "oops/methodData.hpp"
64#include "oops/objArrayKlass.hpp"
65#include "oops/objArrayOop.inline.hpp"
66#include "oops/oop.inline.hpp"
67#include "prims/jvmtiExport.hpp"
68#include "prims/methodHandles.hpp"
69#include "runtime/fieldDescriptor.inline.hpp"
70#include "runtime/handles.inline.hpp"
71#include "runtime/init.hpp"
72#include "runtime/reflection.hpp"
73#include "runtime/jniHandles.inline.hpp"
74#include "runtime/safepointVerifiers.hpp"
75#include "runtime/sharedRuntime.hpp"
76#include "runtime/thread.inline.hpp"
77#include "utilities/dtrace.hpp"
78#include "utilities/macros.hpp"
79#ifdef COMPILER11
80#include "c1/c1_Runtime1.hpp"
81#endif
82#ifdef COMPILER21
83#include "opto/runtime.hpp"
84#endif
85
86// ciEnv
87//
88// This class is the top level broker for requests from the compiler
89// to the VM.
90
91ciObject* ciEnv::_null_object_instance;
92
93#define VM_CLASS_DEFN(name, ignore_s) ciInstanceKlass* ciEnv::_##name = NULL__null;
94VM_CLASSES_DO(VM_CLASS_DEFN)VM_CLASS_DEFN(Object_klass, java_lang_Object ) VM_CLASS_DEFN(
String_klass, java_lang_String ) VM_CLASS_DEFN(Class_klass, java_lang_Class
) VM_CLASS_DEFN(Cloneable_klass, java_lang_Cloneable ) VM_CLASS_DEFN
(ClassLoader_klass, java_lang_ClassLoader ) VM_CLASS_DEFN(Serializable_klass
, java_io_Serializable ) VM_CLASS_DEFN(System_klass, java_lang_System
) VM_CLASS_DEFN(Throwable_klass, java_lang_Throwable ) VM_CLASS_DEFN
(Error_klass, java_lang_Error ) VM_CLASS_DEFN(ThreadDeath_klass
, java_lang_ThreadDeath ) VM_CLASS_DEFN(Exception_klass, java_lang_Exception
) VM_CLASS_DEFN(RuntimeException_klass, java_lang_RuntimeException
) VM_CLASS_DEFN(SecurityManager_klass, java_lang_SecurityManager
) VM_CLASS_DEFN(ProtectionDomain_klass, java_security_ProtectionDomain
) VM_CLASS_DEFN(AccessControlContext_klass, java_security_AccessControlContext
) VM_CLASS_DEFN(AccessController_klass, java_security_AccessController
) VM_CLASS_DEFN(SecureClassLoader_klass, java_security_SecureClassLoader
) VM_CLASS_DEFN(ClassNotFoundException_klass, java_lang_ClassNotFoundException
) VM_CLASS_DEFN(Record_klass, java_lang_Record ) VM_CLASS_DEFN
(NoClassDefFoundError_klass, java_lang_NoClassDefFoundError )
VM_CLASS_DEFN(LinkageError_klass, java_lang_LinkageError ) VM_CLASS_DEFN
(ClassCastException_klass, java_lang_ClassCastException ) VM_CLASS_DEFN
(ArrayStoreException_klass, java_lang_ArrayStoreException ) VM_CLASS_DEFN
(VirtualMachineError_klass, java_lang_VirtualMachineError ) VM_CLASS_DEFN
(InternalError_klass, java_lang_InternalError ) VM_CLASS_DEFN
(OutOfMemoryError_klass, java_lang_OutOfMemoryError ) VM_CLASS_DEFN
(StackOverflowError_klass, java_lang_StackOverflowError ) VM_CLASS_DEFN
(IllegalMonitorStateException_klass, java_lang_IllegalMonitorStateException
) VM_CLASS_DEFN(Reference_klass, java_lang_ref_Reference ) VM_CLASS_DEFN
(SoftReference_klass, java_lang_ref_SoftReference ) VM_CLASS_DEFN
(WeakReference_klass, java_lang_ref_WeakReference ) VM_CLASS_DEFN
(FinalReference_klass, java_lang_ref_FinalReference ) VM_CLASS_DEFN
(PhantomReference_klass, java_lang_ref_PhantomReference ) VM_CLASS_DEFN
(Finalizer_klass, java_lang_ref_Finalizer ) VM_CLASS_DEFN(Thread_klass
, java_lang_Thread ) VM_CLASS_DEFN(ThreadGroup_klass, java_lang_ThreadGroup
) VM_CLASS_DEFN(Properties_klass, java_util_Properties ) VM_CLASS_DEFN
(Module_klass, java_lang_Module ) VM_CLASS_DEFN(reflect_AccessibleObject_klass
, java_lang_reflect_AccessibleObject ) VM_CLASS_DEFN(reflect_Field_klass
, java_lang_reflect_Field ) VM_CLASS_DEFN(reflect_Parameter_klass
, java_lang_reflect_Parameter ) VM_CLASS_DEFN(reflect_Method_klass
, java_lang_reflect_Method ) VM_CLASS_DEFN(reflect_Constructor_klass
, java_lang_reflect_Constructor ) VM_CLASS_DEFN(reflect_MagicAccessorImpl_klass
, reflect_MagicAccessorImpl ) VM_CLASS_DEFN(reflect_MethodAccessorImpl_klass
, reflect_MethodAccessorImpl ) VM_CLASS_DEFN(reflect_ConstructorAccessorImpl_klass
, reflect_ConstructorAccessorImpl ) VM_CLASS_DEFN(reflect_DelegatingClassLoader_klass
, reflect_DelegatingClassLoader ) VM_CLASS_DEFN(reflect_ConstantPool_klass
, reflect_ConstantPool ) VM_CLASS_DEFN(reflect_UnsafeStaticFieldAccessorImpl_klass
, reflect_UnsafeStaticFieldAccessorImpl ) VM_CLASS_DEFN(reflect_CallerSensitive_klass
, reflect_CallerSensitive ) VM_CLASS_DEFN(reflect_NativeConstructorAccessorImpl_klass
, reflect_NativeConstructorAccessorImpl ) VM_CLASS_DEFN(DirectMethodHandle_klass
, java_lang_invoke_DirectMethodHandle ) VM_CLASS_DEFN(MethodHandle_klass
, java_lang_invoke_MethodHandle ) VM_CLASS_DEFN(VarHandle_klass
, java_lang_invoke_VarHandle ) VM_CLASS_DEFN(MemberName_klass
, java_lang_invoke_MemberName ) VM_CLASS_DEFN(ResolvedMethodName_klass
, java_lang_invoke_ResolvedMethodName ) VM_CLASS_DEFN(MethodHandleNatives_klass
, java_lang_invoke_MethodHandleNatives ) VM_CLASS_DEFN(LambdaForm_klass
, java_lang_invoke_LambdaForm ) VM_CLASS_DEFN(MethodType_klass
, java_lang_invoke_MethodType ) VM_CLASS_DEFN(BootstrapMethodError_klass
, java_lang_BootstrapMethodError ) VM_CLASS_DEFN(CallSite_klass
, java_lang_invoke_CallSite ) VM_CLASS_DEFN(NativeEntryPoint_klass
, jdk_internal_invoke_NativeEntryPoint ) VM_CLASS_DEFN(Context_klass
, java_lang_invoke_MethodHandleNatives_CallSiteContext ) VM_CLASS_DEFN
(ConstantCallSite_klass, java_lang_invoke_ConstantCallSite ) VM_CLASS_DEFN
(MutableCallSite_klass, java_lang_invoke_MutableCallSite ) VM_CLASS_DEFN
(VolatileCallSite_klass, java_lang_invoke_VolatileCallSite ) VM_CLASS_DEFN
(AssertionStatusDirectives_klass, java_lang_AssertionStatusDirectives
) VM_CLASS_DEFN(StringBuffer_klass, java_lang_StringBuffer )
VM_CLASS_DEFN(StringBuilder_klass, java_lang_StringBuilder )
VM_CLASS_DEFN(UnsafeConstants_klass, jdk_internal_misc_UnsafeConstants
) VM_CLASS_DEFN(internal_Unsafe_klass, jdk_internal_misc_Unsafe
) VM_CLASS_DEFN(module_Modules_klass, jdk_internal_module_Modules
) VM_CLASS_DEFN(ByteArrayInputStream_klass, java_io_ByteArrayInputStream
) VM_CLASS_DEFN(URL_klass, java_net_URL ) VM_CLASS_DEFN(URLClassLoader_klass
, java_net_URLClassLoader ) VM_CLASS_DEFN(Jar_Manifest_klass,
java_util_jar_Manifest ) VM_CLASS_DEFN(jdk_internal_loader_BuiltinClassLoader_klass
,jdk_internal_loader_BuiltinClassLoader ) VM_CLASS_DEFN(jdk_internal_loader_ClassLoaders_klass
, jdk_internal_loader_ClassLoaders ) VM_CLASS_DEFN(jdk_internal_loader_ClassLoaders_AppClassLoader_klass
, jdk_internal_loader_ClassLoaders_AppClassLoader) VM_CLASS_DEFN
(jdk_internal_loader_ClassLoaders_PlatformClassLoader_klass, jdk_internal_loader_ClassLoaders_PlatformClassLoader
) VM_CLASS_DEFN(CodeSource_klass, java_security_CodeSource ) VM_CLASS_DEFN
(ConcurrentHashMap_klass, java_util_concurrent_ConcurrentHashMap
) VM_CLASS_DEFN(ArrayList_klass, java_util_ArrayList ) VM_CLASS_DEFN
(StackTraceElement_klass, java_lang_StackTraceElement ) VM_CLASS_DEFN
(nio_Buffer_klass, java_nio_Buffer ) VM_CLASS_DEFN(StackWalker_klass
, java_lang_StackWalker ) VM_CLASS_DEFN(AbstractStackWalker_klass
, java_lang_StackStreamFactory_AbstractStackWalker ) VM_CLASS_DEFN
(StackFrameInfo_klass, java_lang_StackFrameInfo ) VM_CLASS_DEFN
(LiveStackFrameInfo_klass, java_lang_LiveStackFrameInfo ) VM_CLASS_DEFN
(java_util_concurrent_locks_AbstractOwnableSynchronizer_klass
, java_util_concurrent_locks_AbstractOwnableSynchronizer) VM_CLASS_DEFN
(Boolean_klass, java_lang_Boolean ) VM_CLASS_DEFN(Character_klass
, java_lang_Character ) VM_CLASS_DEFN(Float_klass, java_lang_Float
) VM_CLASS_DEFN(Double_klass, java_lang_Double ) VM_CLASS_DEFN
(Byte_klass, java_lang_Byte ) VM_CLASS_DEFN(Short_klass, java_lang_Short
) VM_CLASS_DEFN(Integer_klass, java_lang_Integer ) VM_CLASS_DEFN
(Long_klass, java_lang_Long ) VM_CLASS_DEFN(Iterator_klass, java_util_Iterator
) VM_CLASS_DEFN(RecordComponent_klass, java_lang_reflect_RecordComponent
) VM_CLASS_DEFN(vector_VectorSupport_klass, jdk_internal_vm_vector_VectorSupport
) VM_CLASS_DEFN(vector_VectorPayload_klass, jdk_internal_vm_vector_VectorPayload
) VM_CLASS_DEFN(vector_Vector_klass, jdk_internal_vm_vector_Vector
) VM_CLASS_DEFN(vector_VectorMask_klass, jdk_internal_vm_vector_VectorMask
) VM_CLASS_DEFN(vector_VectorShuffle_klass, jdk_internal_vm_vector_VectorShuffle
)
95#undef VM_CLASS_DEFN
96
97ciSymbol* ciEnv::_unloaded_cisymbol = NULL__null;
98ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL__null;
99ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL__null;
100
101jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL__null;
102jobject ciEnv::_ArrayStoreException_handle = NULL__null;
103jobject ciEnv::_ClassCastException_handle = NULL__null;
104
105#ifndef PRODUCT
106static bool firstEnv = true;
107#endif /* PRODUCT */
108
109// ------------------------------------------------------------------
110// ciEnv::ciEnv
111ciEnv::ciEnv(CompileTask* task)
112 : _ciEnv_arena(mtCompiler) {
113 VM_ENTRY_MARKCompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;
;
114
115 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
116 thread->set_env(this);
117 assert(ciEnv::current() == this, "sanity")do { if (!(ciEnv::current() == this)) { (*g_assert_poison) = 'X'
;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 117, "assert(" "ciEnv::current() == this" ") failed", "sanity"
); ::breakpoint(); } } while (0)
;
118
119 _oop_recorder = NULL__null;
120 _debug_info = NULL__null;
121 _dependencies = NULL__null;
122 _failure_reason = NULL__null;
123 _inc_decompile_count_on_failure = true;
124 _compilable = MethodCompilable;
125 _break_at_compile = false;
126 _compiler_data = NULL__null;
127#ifndef PRODUCT
128 assert(!firstEnv, "not initialized properly")do { if (!(!firstEnv)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 128, "assert(" "!firstEnv" ") failed", "not initialized properly"
); ::breakpoint(); } } while (0)
;
129#endif /* !PRODUCT */
130
131 _num_inlined_bytecodes = 0;
132 assert(task == NULL || thread->task() == task, "sanity")do { if (!(task == __null || thread->task() == task)) { (*
g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 132, "assert(" "task == __null || thread->task() == task"
") failed", "sanity"); ::breakpoint(); } } while (0)
;
133 if (task != NULL__null) {
134 task->mark_started(os::elapsed_counter());
135 }
136 _task = task;
137 _log = NULL__null;
138
139 // Temporary buffer for creating symbols and such.
140 _name_buffer = NULL__null;
141 _name_buffer_len = 0;
142
143 _arena = &_ciEnv_arena;
144 _factory = new (_arena) ciObjectFactory(_arena, 128);
145
146 // Preload commonly referenced system ciObjects.
147
148 // During VM initialization, these instances have not yet been created.
149 // Assertions ensure that these instances are not accessed before
150 // their initialization.
151
152 assert(Universe::is_fully_initialized(), "should be complete")do { if (!(Universe::is_fully_initialized())) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 152, "assert(" "Universe::is_fully_initialized()" ") failed"
, "should be complete"); ::breakpoint(); } } while (0)
;
153
154 oop o = Universe::null_ptr_exception_instance();
155 assert(o != NULL, "should have been initialized")do { if (!(o != __null)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 155, "assert(" "o != __null" ") failed", "should have been initialized"
); ::breakpoint(); } } while (0)
;
156 _NullPointerException_instance = get_object(o)->as_instance();
157 o = Universe::arithmetic_exception_instance();
158 assert(o != NULL, "should have been initialized")do { if (!(o != __null)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 158, "assert(" "o != __null" ") failed", "should have been initialized"
); ::breakpoint(); } } while (0)
;
159 _ArithmeticException_instance = get_object(o)->as_instance();
160
161 _ArrayIndexOutOfBoundsException_instance = NULL__null;
162 _ArrayStoreException_instance = NULL__null;
163 _ClassCastException_instance = NULL__null;
164 _the_null_string = NULL__null;
165 _the_min_jint_string = NULL__null;
166
167 _jvmti_redefinition_count = 0;
168 _jvmti_can_hotswap_or_post_breakpoint = false;
169 _jvmti_can_access_local_variables = false;
170 _jvmti_can_post_on_exceptions = false;
171 _jvmti_can_pop_frame = false;
172
173 _dyno_klasses = NULL__null;
174 _dyno_locs = NULL__null;
175 _dyno_name[0] = '\0';
176}
177
178// Record components of a location descriptor string. Components are appended by the constructor and
179// removed by the destructor, like a stack, so scope matters. These location descriptors are used to
180// locate dynamic classes, and terminate at a Method* or oop field associated with dynamic/hidden class.
181//
182// Example use:
183//
184// {
185// RecordLocation fp(this, "field1");
186// // location: "field1"
187// { RecordLocation fp(this, " field2"); // location: "field1 field2" }
188// // location: "field1"
189// { RecordLocation fp(this, " field3"); // location: "field1 field3" }
190// // location: "field1"
191// }
192// // location: ""
193//
194// Examples of actual locations
195// @bci compiler/ciReplay/CiReplayBase$TestMain test (I)V 1 <appendix> argL0 ;
196// // resolve invokedynamic at bci 1 of TestMain.test, then read field "argL0" from appendix
197// @bci compiler/ciReplay/CiReplayBase$TestMain main ([Ljava/lang/String;)V 0 <appendix> form vmentry <vmtarget> ;
198// // resolve invokedynamic at bci 0 of TestMain.main, then read field "form.vmentry.method.vmtarget" from appendix
199// @cpi compiler/ciReplay/CiReplayBase$TestMain 56 form vmentry <vmtarget> ;
200// // resolve MethodHandle at cpi 56 of TestMain, then read field "vmentry.method.vmtarget" from resolved MethodHandle
201class RecordLocation {
202private:
203 char* end;
204
205 ATTRIBUTE_PRINTF(3, 4)__attribute__((format(printf, 3, 4)))
206 void push(ciEnv* ci, const char* fmt, ...) {
207 va_list args;
208 va_start(args, fmt)__builtin_va_start(args, fmt);
209 push_va(ci, fmt, args);
210 va_end(args)__builtin_va_end(args);
211 }
212
213public:
214 ATTRIBUTE_PRINTF(3, 0)__attribute__((format(printf, 3, 0)))
215 void push_va(ciEnv* ci, const char* fmt, va_list args) {
216 char *e = ci->_dyno_name + strlen(ci->_dyno_name);
217 char *m = ci->_dyno_name + ARRAY_SIZE(ci->_dyno_name)sizeof(array_size_impl(ci->_dyno_name)) - 1;
218 os::vsnprintf(e, m - e, fmt, args);
219 assert(strlen(ci->_dyno_name) < (ARRAY_SIZE(ci->_dyno_name) - 1), "overflow")do { if (!(strlen(ci->_dyno_name) < (sizeof(array_size_impl
(ci->_dyno_name)) - 1))) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 219, "assert(" "strlen(ci->_dyno_name) < (sizeof(array_size_impl(ci->_dyno_name)) - 1)"
") failed", "overflow"); ::breakpoint(); } } while (0)
;
220 }
221
222 // append a new component
223 ATTRIBUTE_PRINTF(3, 4)__attribute__((format(printf, 3, 4)))
224 RecordLocation(ciEnv* ci, const char* fmt, ...) {
225 end = ci->_dyno_name + strlen(ci->_dyno_name);
226 va_list args;
227 va_start(args, fmt)__builtin_va_start(args, fmt);
228 push(ci, " ");
229 push_va(ci, fmt, args);
230 va_end(args)__builtin_va_end(args);
231 }
232
233 // reset to previous state
234 ~RecordLocation() {
235 *end = '\0';
236 }
237};
238
239ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
240 ASSERT_IN_VMdo { if (!(ciEnv::is_in_vm())) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 240, "assert(" "ciEnv::is_in_vm()" ") failed", "must be in vm state"
); ::breakpoint(); } } while (0);
;
241
242 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
243 CompilerThread* current_thread = CompilerThread::current();
244 assert(current_thread->env() == NULL, "must be")do { if (!(current_thread->env() == __null)) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 244, "assert(" "current_thread->env() == __null" ") failed"
, "must be"); ::breakpoint(); } } while (0)
;
245 current_thread->set_env(this);
246 assert(ciEnv::current() == this, "sanity")do { if (!(ciEnv::current() == this)) { (*g_assert_poison) = 'X'
;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 246, "assert(" "ciEnv::current() == this" ") failed", "sanity"
); ::breakpoint(); } } while (0)
;
247
248 _oop_recorder = NULL__null;
249 _debug_info = NULL__null;
250 _dependencies = NULL__null;
251 _failure_reason = NULL__null;
252 _inc_decompile_count_on_failure = true;
253 _compilable = MethodCompilable_never;
254 _break_at_compile = false;
255 _compiler_data = NULL__null;
256#ifndef PRODUCT
257 assert(firstEnv, "must be first")do { if (!(firstEnv)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 257, "assert(" "firstEnv" ") failed", "must be first"); ::breakpoint
(); } } while (0)
;
258 firstEnv = false;
259#endif /* !PRODUCT */
260
261 _num_inlined_bytecodes = 0;
262 _task = NULL__null;
263 _log = NULL__null;
264
265 // Temporary buffer for creating symbols and such.
266 _name_buffer = NULL__null;
267 _name_buffer_len = 0;
268
269 _arena = arena;
270 _factory = new (_arena) ciObjectFactory(_arena, 128);
271
272 // Preload commonly referenced system ciObjects.
273
274 // During VM initialization, these instances have not yet been created.
275 // Assertions ensure that these instances are not accessed before
276 // their initialization.
277
278 assert(Universe::is_fully_initialized(), "must be")do { if (!(Universe::is_fully_initialized())) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 278, "assert(" "Universe::is_fully_initialized()" ") failed"
, "must be"); ::breakpoint(); } } while (0)
;
279
280 _NullPointerException_instance = NULL__null;
281 _ArithmeticException_instance = NULL__null;
282 _ArrayIndexOutOfBoundsException_instance = NULL__null;
283 _ArrayStoreException_instance = NULL__null;
284 _ClassCastException_instance = NULL__null;
285 _the_null_string = NULL__null;
286 _the_min_jint_string = NULL__null;
287
288 _jvmti_redefinition_count = 0;
289 _jvmti_can_hotswap_or_post_breakpoint = false;
290 _jvmti_can_access_local_variables = false;
291 _jvmti_can_post_on_exceptions = false;
292 _jvmti_can_pop_frame = false;
293
294 _dyno_klasses = NULL__null;
295 _dyno_locs = NULL__null;
296}
297
298ciEnv::~ciEnv() {
299 GUARDED_VM_ENTRY({if (ciEnv::is_in_vm()) { CompilerThread* current_thread = CompilerThread
::current(); _factory->remove_symbols(); current_thread->
set_env(__null); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { CompilerThread* current_thread = CompilerThread::current
(); _factory->remove_symbols(); current_thread->set_env
(__null); }}}
300 CompilerThread* current_thread = CompilerThread::current();{if (ciEnv::is_in_vm()) { CompilerThread* current_thread = CompilerThread
::current(); _factory->remove_symbols(); current_thread->
set_env(__null); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { CompilerThread* current_thread = CompilerThread::current
(); _factory->remove_symbols(); current_thread->set_env
(__null); }}}
301 _factory->remove_symbols();{if (ciEnv::is_in_vm()) { CompilerThread* current_thread = CompilerThread
::current(); _factory->remove_symbols(); current_thread->
set_env(__null); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { CompilerThread* current_thread = CompilerThread::current
(); _factory->remove_symbols(); current_thread->set_env
(__null); }}}
302 // Need safepoint to clear the env on the thread. RedefineClasses might{if (ciEnv::is_in_vm()) { CompilerThread* current_thread = CompilerThread
::current(); _factory->remove_symbols(); current_thread->
set_env(__null); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { CompilerThread* current_thread = CompilerThread::current
(); _factory->remove_symbols(); current_thread->set_env
(__null); }}}
303 // be reading it.{if (ciEnv::is_in_vm()) { CompilerThread* current_thread = CompilerThread
::current(); _factory->remove_symbols(); current_thread->
set_env(__null); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { CompilerThread* current_thread = CompilerThread::current
(); _factory->remove_symbols(); current_thread->set_env
(__null); }}}
304 current_thread->set_env(NULL);{if (ciEnv::is_in_vm()) { CompilerThread* current_thread = CompilerThread
::current(); _factory->remove_symbols(); current_thread->
set_env(__null); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { CompilerThread* current_thread = CompilerThread::current
(); _factory->remove_symbols(); current_thread->set_env
(__null); }}}
305 ){if (ciEnv::is_in_vm()) { CompilerThread* current_thread = CompilerThread
::current(); _factory->remove_symbols(); current_thread->
set_env(__null); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { CompilerThread* current_thread = CompilerThread::current
(); _factory->remove_symbols(); current_thread->set_env
(__null); }}}
306}
307
308// ------------------------------------------------------------------
309// Cache Jvmti state
310bool ciEnv::cache_jvmti_state() {
311 VM_ENTRY_MARKCompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;
;
312 // Get Jvmti capabilities under lock to get consistant values.
313 MutexLocker mu(JvmtiThreadState_lock);
314 _jvmti_redefinition_count = JvmtiExport::redefinition_count();
315 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
316 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
317 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
318 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
319 _jvmti_can_get_owned_monitor_info = JvmtiExport::can_get_owned_monitor_info();
320 _jvmti_can_walk_any_space = JvmtiExport::can_walk_any_space();
321 return _task != NULL__null && _task->method()->is_old();
322}
323
324bool ciEnv::jvmti_state_changed() const {
325 // Some classes were redefined
326 if (_jvmti_redefinition_count != JvmtiExport::redefinition_count()) {
327 return true;
328 }
329
330 if (!_jvmti_can_access_local_variables &&
331 JvmtiExport::can_access_local_variables()) {
332 return true;
333 }
334 if (!_jvmti_can_hotswap_or_post_breakpoint &&
335 JvmtiExport::can_hotswap_or_post_breakpoint()) {
336 return true;
337 }
338 if (!_jvmti_can_post_on_exceptions &&
339 JvmtiExport::can_post_on_exceptions()) {
340 return true;
341 }
342 if (!_jvmti_can_pop_frame &&
343 JvmtiExport::can_pop_frame()) {
344 return true;
345 }
346 if (!_jvmti_can_get_owned_monitor_info &&
347 JvmtiExport::can_get_owned_monitor_info()) {
348 return true;
349 }
350 if (!_jvmti_can_walk_any_space &&
351 JvmtiExport::can_walk_any_space()) {
352 return true;
353 }
354
355 return false;
356}
357
358// ------------------------------------------------------------------
359// Cache DTrace flags
360void ciEnv::cache_dtrace_flags() {
361 // Need lock?
362 _dtrace_extended_probes = ExtendedDTraceProbes;
363 if (_dtrace_extended_probes) {
364 _dtrace_method_probes = true;
365 _dtrace_alloc_probes = true;
366 } else {
367 _dtrace_method_probes = DTraceMethodProbes;
368 _dtrace_alloc_probes = DTraceAllocProbes;
369 }
370}
371
372// ------------------------------------------------------------------
373// helper for lazy exception creation
374ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
375 VM_ENTRY_MARKCompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;
;
376 if (handle == NULL__null) {
377 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
378 InstanceKlass* ik = SystemDictionary::find_instance_klass(name, Handle(), Handle());
379 jobject objh = NULL__null;
380 if (ik != NULL__null) {
381 oop obj = ik->allocate_instance(THREAD__the_thread__);
382 if (!HAS_PENDING_EXCEPTION(((ThreadShadow*)__the_thread__)->has_pending_exception()))
383 objh = JNIHandles::make_global(Handle(THREAD__the_thread__, obj));
384 }
385 if (HAS_PENDING_EXCEPTION(((ThreadShadow*)__the_thread__)->has_pending_exception())) {
386 CLEAR_PENDING_EXCEPTION(((ThreadShadow*)__the_thread__)->clear_pending_exception(
))
;
387 } else {
388 handle = objh;
389 }
390 }
391 oop obj = JNIHandles::resolve(handle);
392 return obj == NULL__null? NULL__null: get_object(obj)->as_instance();
393}
394
395ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
396 if (_ArrayIndexOutOfBoundsException_instance == NULL__null) {
397 _ArrayIndexOutOfBoundsException_instance
398 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
399 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
400 }
401 return _ArrayIndexOutOfBoundsException_instance;
402}
403ciInstance* ciEnv::ArrayStoreException_instance() {
404 if (_ArrayStoreException_instance == NULL__null) {
405 _ArrayStoreException_instance
406 = get_or_create_exception(_ArrayStoreException_handle,
407 vmSymbols::java_lang_ArrayStoreException());
408 }
409 return _ArrayStoreException_instance;
410}
411ciInstance* ciEnv::ClassCastException_instance() {
412 if (_ClassCastException_instance == NULL__null) {
413 _ClassCastException_instance
414 = get_or_create_exception(_ClassCastException_handle,
415 vmSymbols::java_lang_ClassCastException());
416 }
417 return _ClassCastException_instance;
418}
419
420ciInstance* ciEnv::the_null_string() {
421 if (_the_null_string == NULL__null) {
422 VM_ENTRY_MARKCompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;
;
423 _the_null_string = get_object(Universe::the_null_string())->as_instance();
424 }
425 return _the_null_string;
426}
427
428ciInstance* ciEnv::the_min_jint_string() {
429 if (_the_min_jint_string == NULL__null) {
430 VM_ENTRY_MARKCompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;
;
431 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
432 }
433 return _the_min_jint_string;
434}
435
436// ------------------------------------------------------------------
437// ciEnv::get_method_from_handle
438ciMethod* ciEnv::get_method_from_handle(Method* method) {
439 VM_ENTRY_MARKCompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;
;
440 return get_metadata(method)->as_method();
441}
442
443// ------------------------------------------------------------------
444// ciEnv::check_klass_accessiblity
445//
446// Note: the logic of this method should mirror the logic of
447// ConstantPool::verify_constant_pool_resolve.
448bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
449 Klass* resolved_klass) {
450 if (accessing_klass == NULL__null || !accessing_klass->is_loaded()) {
451 return true;
452 }
453 if (accessing_klass->is_obj_array_klass()) {
454 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
455 }
456 if (!accessing_klass->is_instance_klass()) {
457 return true;
458 }
459
460 if (resolved_klass->is_objArray_klass()) {
461 // Find the element klass, if this is an array.
462 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
463 }
464 if (resolved_klass->is_instance_klass()) {
465 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
466 InstanceKlass::cast(resolved_klass),
467 true) == Reflection::ACCESS_OK);
468 }
469 return true;
470}
471
472// ------------------------------------------------------------------
473// ciEnv::get_klass_by_name_impl
474ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
475 const constantPoolHandle& cpool,
476 ciSymbol* name,
477 bool require_local) {
478 ASSERT_IN_VMdo { if (!(ciEnv::is_in_vm())) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 478, "assert(" "ciEnv::is_in_vm()" ") failed", "must be in vm state"
); ::breakpoint(); } } while (0);
;
479 Thread* current = Thread::current();
480
481 // Now we need to check the SystemDictionary
482 Symbol* sym = name->get_symbol();
483 if (Signature::has_envelope(sym)) {
484 // This is a name from a signature. Strip off the trimmings.
485 // Call recursive to keep scope of strippedsym.
486 TempNewSymbol strippedsym = Signature::strip_envelope(sym);
487 ciSymbol* strippedname = get_symbol(strippedsym);
488 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
489 }
490
491 // Check for prior unloaded klass. The SystemDictionary's answers
492 // can vary over time but the compiler needs consistency.
493 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
494 if (unloaded_klass != NULL__null) {
495 if (require_local) return NULL__null;
496 return unloaded_klass;
497 }
498
499 Handle loader;
500 Handle domain;
501 if (accessing_klass != NULL__null) {
502 loader = Handle(current, accessing_klass->loader());
503 domain = Handle(current, accessing_klass->protection_domain());
504 }
505
506 // setup up the proper type to return on OOM
507 ciKlass* fail_type;
508 if (sym->char_at(0) == JVM_SIGNATURE_ARRAY) {
509 fail_type = _unloaded_ciobjarrayklass;
510 } else {
511 fail_type = _unloaded_ciinstance_klass;
512 }
513 Klass* found_klass;
514 {
515 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
516 MutexLocker ml(current, Compile_lock);
517 Klass* kls;
518 if (!require_local) {
519 kls = SystemDictionary::find_constrained_instance_or_array_klass(current, sym, loader);
520 } else {
521 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain);
522 }
523 found_klass = kls;
524 }
525
526 // If we fail to find an array klass, look again for its element type.
527 // The element type may be available either locally or via constraints.
528 // In either case, if we can find the element type in the system dictionary,
529 // we must build an array type around it. The CI requires array klasses
530 // to be loaded if their element klasses are loaded, except when memory
531 // is exhausted.
532 if (Signature::is_array(sym) &&
533 (sym->char_at(1) == JVM_SIGNATURE_ARRAY || sym->char_at(1) == JVM_SIGNATURE_CLASS)) {
534 // We have an unloaded array.
535 // Build it on the fly if the element class exists.
536 SignatureStream ss(sym, false);
537 ss.skip_array_prefix(1);
538 // Get element ciKlass recursively.
539 ciKlass* elem_klass =
540 get_klass_by_name_impl(accessing_klass,
541 cpool,
542 get_symbol(ss.as_symbol()),
543 require_local);
544 if (elem_klass != NULL__null && elem_klass->is_loaded()) {
545 // Now make an array for it
546 return ciObjArrayKlass::make_impl(elem_klass);
547 }
548 }
549
550 if (found_klass == NULL__null && !cpool.is_null() && cpool->has_preresolution()) {
551 // Look inside the constant pool for pre-resolved class entries.
552 for (int i = cpool->length() - 1; i >= 1; i--) {
553 if (cpool->tag_at(i).is_klass()) {
554 Klass* kls = cpool->resolved_klass_at(i);
555 if (kls->name() == sym) {
556 found_klass = kls;
557 break;
558 }
559 }
560 }
561 }
562
563 if (found_klass != NULL__null) {
564 // Found it. Build a CI handle.
565 return get_klass(found_klass);
566 }
567
568 if (require_local) return NULL__null;
569
570 // Not yet loaded into the VM, or not governed by loader constraints.
571 // Make a CI representative for it.
572 return get_unloaded_klass(accessing_klass, name);
573}
574
575// ------------------------------------------------------------------
576// ciEnv::get_klass_by_name
577ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
578 ciSymbol* klass_name,
579 bool require_local) {
580 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,{if (ciEnv::is_in_vm()) { return get_klass_by_name_impl(accessing_klass
, constantPoolHandle(), klass_name, require_local); } else { CompilerThread
* thread=CompilerThread::current(); ThreadInVMfromNative __tiv
(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;; { return get_klass_by_name_impl
(accessing_klass, constantPoolHandle(), klass_name, require_local
); }}}
581 constantPoolHandle(),{if (ciEnv::is_in_vm()) { return get_klass_by_name_impl(accessing_klass
, constantPoolHandle(), klass_name, require_local); } else { CompilerThread
* thread=CompilerThread::current(); ThreadInVMfromNative __tiv
(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;; { return get_klass_by_name_impl
(accessing_klass, constantPoolHandle(), klass_name, require_local
); }}}
582 klass_name,{if (ciEnv::is_in_vm()) { return get_klass_by_name_impl(accessing_klass
, constantPoolHandle(), klass_name, require_local); } else { CompilerThread
* thread=CompilerThread::current(); ThreadInVMfromNative __tiv
(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;; { return get_klass_by_name_impl
(accessing_klass, constantPoolHandle(), klass_name, require_local
); }}}
583 require_local);){if (ciEnv::is_in_vm()) { return get_klass_by_name_impl(accessing_klass
, constantPoolHandle(), klass_name, require_local); } else { CompilerThread
* thread=CompilerThread::current(); ThreadInVMfromNative __tiv
(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;; { return get_klass_by_name_impl
(accessing_klass, constantPoolHandle(), klass_name, require_local
); }}}
584}
585
586// ------------------------------------------------------------------
587// ciEnv::get_klass_by_index_impl
588//
589// Implementation of get_klass_by_index.
590ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
591 int index,
592 bool& is_accessible,
593 ciInstanceKlass* accessor) {
594 EXCEPTION_CONTEXTCompilerThread* thread = CompilerThread::current(); JavaThread
* __the_thread__ = thread;
;
595 Klass* klass = NULL__null;
596 Symbol* klass_name = NULL__null;
597
598 if (cpool->tag_at(index).is_symbol()) {
599 klass_name = cpool->symbol_at(index);
600 } else {
601 // Check if it's resolved if it's not a symbol constant pool entry.
602 klass = ConstantPool::klass_at_if_loaded(cpool, index);
603 // Try to look it up by name.
604 if (klass == NULL__null) {
605 klass_name = cpool->klass_name_at(index);
606 }
607 }
608
609 if (klass == NULL__null) {
610 // Not found in constant pool. Use the name to do the lookup.
611 ciKlass* k = get_klass_by_name_impl(accessor,
612 cpool,
613 get_symbol(klass_name),
614 false);
615 // Calculate accessibility the hard way.
616 if (!k->is_loaded()) {
617 is_accessible = false;
618 } else if (k->loader() != accessor->loader() &&
619 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL__null) {
620 // Loaded only remotely. Not linked yet.
621 is_accessible = false;
622 } else {
623 // Linked locally, and we must also check public/private, etc.
624 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
625 }
626 return k;
627 }
628
629 // Check for prior unloaded klass. The SystemDictionary's answers
630 // can vary over time but the compiler needs consistency.
631 ciSymbol* name = get_symbol(klass->name());
632 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
633 if (unloaded_klass != NULL__null) {
634 is_accessible = false;
635 return unloaded_klass;
636 }
637
638 // It is known to be accessible, since it was found in the constant pool.
639 ciKlass* ciKlass = get_klass(klass);
640 is_accessible = true;
641#ifndef PRODUCT
642 if (ReplayCompiles && ciKlass == _unloaded_ciinstance_klass) {
643 // Klass was unresolved at replay dump time and therefore not accessible.
644 is_accessible = false;
645 }
646#endif
647 return ciKlass;
648}
649
650// ------------------------------------------------------------------
651// ciEnv::get_klass_by_index
652//
653// Get a klass from the constant pool.
654ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
655 int index,
656 bool& is_accessible,
657 ciInstanceKlass* accessor) {
658 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);){if (ciEnv::is_in_vm()) { return get_klass_by_index_impl(cpool
, index, is_accessible, accessor); } else { CompilerThread* thread
=CompilerThread::current(); ThreadInVMfromNative __tiv(thread
); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;; { return get_klass_by_index_impl
(cpool, index, is_accessible, accessor); }}}
659}
660
661// ------------------------------------------------------------------
662// ciEnv::get_constant_by_index_impl
663//
664// Implementation of get_constant_by_index().
665ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
666 int pool_index, int cache_index,
667 ciInstanceKlass* accessor) {
668 bool ignore_will_link;
669 EXCEPTION_CONTEXTCompilerThread* thread = CompilerThread::current(); JavaThread
* __the_thread__ = thread;
;
670 int index = pool_index;
671 if (cache_index >= 0) {
672 assert(index < 0, "only one kind of index at a time")do { if (!(index < 0)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 672, "assert(" "index < 0" ") failed", "only one kind of index at a time"
); ::breakpoint(); } } while (0)
;
673 index = cpool->object_to_cp_index(cache_index);
674 oop obj = cpool->resolved_references()->obj_at(cache_index);
675 if (obj != NULL__null) {
676 if (obj == Universe::the_null_sentinel()) {
677 return ciConstant(T_OBJECT, get_object(NULL__null));
678 }
679 BasicType bt = T_OBJECT;
680 if (cpool->tag_at(index).is_dynamic_constant())
681 bt = Signature::basic_type(cpool->uncached_signature_ref_at(index));
682 if (is_reference_type(bt)) {
683 } else {
684 // we have to unbox the primitive value
685 if (!is_java_primitive(bt)) return ciConstant();
686 jvalue value;
687 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
688 assert(bt2 == bt, "")do { if (!(bt2 == bt)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 688, "assert(" "bt2 == bt" ") failed", ""); ::breakpoint();
} } while (0)
;
689 switch (bt2) {
690 case T_DOUBLE: return ciConstant(value.d);
691 case T_FLOAT: return ciConstant(value.f);
692 case T_LONG: return ciConstant(value.j);
693 case T_INT: return ciConstant(bt2, value.i);
694 case T_SHORT: return ciConstant(bt2, value.s);
695 case T_BYTE: return ciConstant(bt2, value.b);
696 case T_CHAR: return ciConstant(bt2, value.c);
697 case T_BOOLEAN: return ciConstant(bt2, value.z);
698 default: return ciConstant();
699 }
700 }
701 ciObject* ciobj = get_object(obj);
702 if (ciobj->is_array()) {
703 return ciConstant(T_ARRAY, ciobj);
704 } else {
705 assert(ciobj->is_instance(), "should be an instance")do { if (!(ciobj->is_instance())) { (*g_assert_poison) = 'X'
;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 705, "assert(" "ciobj->is_instance()" ") failed", "should be an instance"
); ::breakpoint(); } } while (0)
;
706 return ciConstant(T_OBJECT, ciobj);
707 }
708 }
709 }
710 constantTag tag = cpool->tag_at(index);
711 if (tag.is_int()) {
712 return ciConstant(T_INT, (jint)cpool->int_at(index));
713 } else if (tag.is_long()) {
714 return ciConstant((jlong)cpool->long_at(index));
715 } else if (tag.is_float()) {
716 return ciConstant((jfloat)cpool->float_at(index));
717 } else if (tag.is_double()) {
718 return ciConstant((jdouble)cpool->double_at(index));
719 } else if (tag.is_string()) {
720 oop string = NULL__null;
721 assert(cache_index >= 0, "should have a cache index")do { if (!(cache_index >= 0)) { (*g_assert_poison) = 'X';;
report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 721, "assert(" "cache_index >= 0" ") failed", "should have a cache index"
); ::breakpoint(); } } while (0)
;
722 string = cpool->string_at(index, cache_index, THREAD__the_thread__);
723 if (HAS_PENDING_EXCEPTION(((ThreadShadow*)__the_thread__)->has_pending_exception())) {
724 CLEAR_PENDING_EXCEPTION(((ThreadShadow*)__the_thread__)->clear_pending_exception(
))
;
725 record_out_of_memory_failure();
726 return ciConstant();
727 }
728 ciObject* constant = get_object(string);
729 if (constant->is_array()) {
730 return ciConstant(T_ARRAY, constant);
731 } else {
732 assert (constant->is_instance(), "must be an instance, or not? ")do { if (!(constant->is_instance())) { (*g_assert_poison) =
'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 732, "assert(" "constant->is_instance()" ") failed", "must be an instance, or not? "
); ::breakpoint(); } } while (0)
;
733 return ciConstant(T_OBJECT, constant);
734 }
735 } else if (tag.is_unresolved_klass_in_error()) {
736 return ciConstant();
737 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
738 // 4881222: allow ldc to take a class type
739 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
740 if (HAS_PENDING_EXCEPTION(((ThreadShadow*)__the_thread__)->has_pending_exception())) {
741 CLEAR_PENDING_EXCEPTION(((ThreadShadow*)__the_thread__)->clear_pending_exception(
))
;
742 record_out_of_memory_failure();
743 return ciConstant();
744 }
745 assert (klass->is_instance_klass() || klass->is_array_klass(),do { if (!(klass->is_instance_klass() || klass->is_array_klass
())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 746, "assert(" "klass->is_instance_klass() || klass->is_array_klass()"
") failed", "must be an instance or array klass "); ::breakpoint
(); } } while (0)
746 "must be an instance or array klass ")do { if (!(klass->is_instance_klass() || klass->is_array_klass
())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 746, "assert(" "klass->is_instance_klass() || klass->is_array_klass()"
") failed", "must be an instance or array klass "); ::breakpoint
(); } } while (0)
;
747 return ciConstant(T_OBJECT, klass->java_mirror());
748 } else if (tag.is_method_type()) {
749 // must execute Java code to link this CP entry into cache[i].f1
750 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
751 ciObject* ciobj = get_unloaded_method_type_constant(signature);
752 return ciConstant(T_OBJECT, ciobj);
753 } else if (tag.is_method_handle()) {
754 // must execute Java code to link this CP entry into cache[i].f1
755 int ref_kind = cpool->method_handle_ref_kind_at(index);
756 int callee_index = cpool->method_handle_klass_index_at(index);
757 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
758 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
759 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
760 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
761 return ciConstant(T_OBJECT, ciobj);
762 } else if (tag.is_dynamic_constant()) {
763 return ciConstant();
764 } else {
765 ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here(
"/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 765); ::breakpoint(); } while (0)
;
766 return ciConstant();
767 }
768}
769
770// ------------------------------------------------------------------
771// ciEnv::get_constant_by_index
772//
773// Pull a constant out of the constant pool. How appropriate.
774//
775// Implementation note: this query is currently in no way cached.
776ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
777 int pool_index, int cache_index,
778 ciInstanceKlass* accessor) {
779 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);){if (ciEnv::is_in_vm()) { return get_constant_by_index_impl(cpool
, pool_index, cache_index, accessor); } else { CompilerThread
* thread=CompilerThread::current(); ThreadInVMfromNative __tiv
(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;; { return get_constant_by_index_impl
(cpool, pool_index, cache_index, accessor); }}}
780}
781
782// ------------------------------------------------------------------
783// ciEnv::get_field_by_index_impl
784//
785// Implementation of get_field_by_index.
786//
787// Implementation note: the results of field lookups are cached
788// in the accessor klass.
789ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
790 int index) {
791 ciConstantPoolCache* cache = accessor->field_cache();
792 if (cache == NULL__null) {
793 ciField* field = new (arena()) ciField(accessor, index);
794 return field;
795 } else {
796 ciField* field = (ciField*)cache->get(index);
797 if (field == NULL__null) {
798 field = new (arena()) ciField(accessor, index);
799 cache->insert(index, field);
800 }
801 return field;
802 }
803}
804
805// ------------------------------------------------------------------
806// ciEnv::get_field_by_index
807//
808// Get a field by index from a klass's constant pool.
809ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
810 int index) {
811 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);){if (ciEnv::is_in_vm()) { return get_field_by_index_impl(accessor
, index); } else { CompilerThread* thread=CompilerThread::current
(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner __hm
(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { return get_field_by_index_impl(accessor, index); }
}}
812}
813
814// ------------------------------------------------------------------
815// ciEnv::lookup_method
816//
817// Perform an appropriate method lookup based on accessor, holder,
818// name, signature, and bytecode.
819Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
820 ciKlass* holder,
821 Symbol* name,
822 Symbol* sig,
823 Bytecodes::Code bc,
824 constantTag tag) {
825 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
826 Klass* holder_klass = holder->get_Klass();
827
828 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
829 assert(check_klass_accessibility(accessor, holder_klass), "holder not accessible")do { if (!(check_klass_accessibility(accessor, holder_klass))
) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 829, "assert(" "check_klass_accessibility(accessor, holder_klass)"
") failed", "holder not accessible"); ::breakpoint(); } } while
(0)
;
830
831 LinkInfo link_info(holder_klass, name, sig, accessor_klass,
832 LinkInfo::AccessCheck::required,
833 LinkInfo::LoaderConstraintCheck::required,
834 tag);
835 switch (bc) {
836 case Bytecodes::_invokestatic:
837 return LinkResolver::resolve_static_call_or_null(link_info);
838 case Bytecodes::_invokespecial:
839 return LinkResolver::resolve_special_call_or_null(link_info);
840 case Bytecodes::_invokeinterface:
841 return LinkResolver::linktime_resolve_interface_method_or_null(link_info);
842 case Bytecodes::_invokevirtual:
843 return LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
844 default:
845 fatal("Unhandled bytecode: %s", Bytecodes::name(bc))do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 845, "Unhandled bytecode: %s", Bytecodes::name(bc)); ::breakpoint
(); } while (0)
;
846 return NULL__null; // silence compiler warnings
847 }
848}
849
850
851// ------------------------------------------------------------------
852// ciEnv::get_method_by_index_impl
853ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
854 int index, Bytecodes::Code bc,
855 ciInstanceKlass* accessor) {
856 assert(cpool.not_null(), "need constant pool")do { if (!(cpool.not_null())) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 856, "assert(" "cpool.not_null()" ") failed", "need constant pool"
); ::breakpoint(); } } while (0)
;
857 assert(accessor != NULL, "need origin of access")do { if (!(accessor != __null)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 857, "assert(" "accessor != __null" ") failed", "need origin of access"
); ::breakpoint(); } } while (0)
;
858 if (bc == Bytecodes::_invokedynamic) {
859 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
860 bool is_resolved = !cpce->is_f1_null();
861 // FIXME: code generation could allow for null (unlinked) call site
862 // The call site could be made patchable as follows:
863 // Load the appendix argument from the constant pool.
864 // Test the appendix argument and jump to a known deopt routine if it is null.
865 // Jump through a patchable call site, which is initially a deopt routine.
866 // Patch the call site to the nmethod entry point of the static compiled lambda form.
867 // As with other two-component call sites, both values must be independently verified.
868
869 if (is_resolved) {
870 // Get the invoker Method* from the constant pool.
871 // (The appendix argument, if any, will be noted in the method's signature.)
872 Method* adapter = cpce->f1_as_method();
873 return get_method(adapter);
874 }
875
876 // Fake a method that is equivalent to a declared method.
877 ciInstanceKlass* holder = get_instance_klass(vmClasses::MethodHandle_klass());
878 ciSymbol* name = ciSymbols::invokeBasic_name();
879 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
880 return get_unloaded_method(holder, name, signature, accessor);
881 } else {
882 const int holder_index = cpool->klass_ref_index_at(index);
883 bool holder_is_accessible;
884 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
885
886 // Get the method's name and signature.
887 Symbol* name_sym = cpool->name_ref_at(index);
888 Symbol* sig_sym = cpool->signature_ref_at(index);
889
890 if (cpool->has_preresolution()
891 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
892 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
893 // Short-circuit lookups for JSR 292-related call sites.
894 // That is, do not rely only on name-based lookups, because they may fail
895 // if the names are not resolvable in the boot class loader (7056328).
896 switch (bc) {
897 case Bytecodes::_invokevirtual:
898 case Bytecodes::_invokeinterface:
899 case Bytecodes::_invokespecial:
900 case Bytecodes::_invokestatic:
901 {
902 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
903 if (m != NULL__null) {
904 return get_method(m);
905 }
906 }
907 break;
908 default:
909 break;
910 }
911 }
912
913 if (holder_is_accessible) { // Our declared holder is loaded.
914 constantTag tag = cpool->tag_ref_at(index);
915 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?")do { if (!(accessor->get_instanceKlass() == cpool->pool_holder
())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 915, "assert(" "accessor->get_instanceKlass() == cpool->pool_holder()"
") failed", "not the pool holder?"); ::breakpoint(); } } while
(0)
;
916 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
917 if (m != NULL__null &&
918 (bc == Bytecodes::_invokestatic
919 ? m->method_holder()->is_not_initialized()
920 : !m->method_holder()->is_loaded())) {
921 m = NULL__null;
922 }
923#ifdef ASSERT1
924 if (m != NULL__null && ReplayCompiles && !ciReplay::is_loaded(m)) {
925 m = NULL__null;
926 }
927#endif
928 if (m != NULL__null) {
929 // We found the method.
930 return get_method(m);
931 }
932 }
933
934 // Either the declared holder was not loaded, or the method could
935 // not be found. Create a dummy ciMethod to represent the failed
936 // lookup.
937 ciSymbol* name = get_symbol(name_sym);
938 ciSymbol* signature = get_symbol(sig_sym);
939 return get_unloaded_method(holder, name, signature, accessor);
940 }
941}
942
943
944// ------------------------------------------------------------------
945// ciEnv::get_instance_klass_for_declared_method_holder
946ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
947 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
948 // instead of a ciInstanceKlass. For that case simply pretend that the
949 // declared holder is Object.clone since that's where the call will bottom out.
950 // A more correct fix would trickle out through many interfaces in CI,
951 // requiring ciInstanceKlass* to become ciKlass* and many more places would
952 // require checks to make sure the expected type was found. Given that this
953 // only occurs for clone() the more extensive fix seems like overkill so
954 // instead we simply smear the array type into Object.
955 guarantee(method_holder != NULL, "no method holder")do { if (!(method_holder != __null)) { (*g_assert_poison) = 'X'
;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 955, "guarantee(" "method_holder != NULL" ") failed", "no method holder"
); ::breakpoint(); } } while (0)
;
956 if (method_holder->is_instance_klass()) {
957 return method_holder->as_instance_klass();
958 } else if (method_holder->is_array_klass()) {
959 return current()->Object_klass();
960 } else {
961 ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here(
"/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 961); ::breakpoint(); } while (0)
;
962 }
963 return NULL__null;
964}
965
966
967// ------------------------------------------------------------------
968// ciEnv::get_method_by_index
969ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
970 int index, Bytecodes::Code bc,
971 ciInstanceKlass* accessor) {
972 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);){if (ciEnv::is_in_vm()) { return get_method_by_index_impl(cpool
, index, bc, accessor); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { return get_method_by_index_impl(cpool, index, bc, accessor
); }}}
973}
974
975
976// ------------------------------------------------------------------
977// ciEnv::name_buffer
978char *ciEnv::name_buffer(int req_len) {
979 if (_name_buffer_len < req_len) {
980 if (_name_buffer == NULL__null) {
981 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
982 _name_buffer_len = req_len;
983 } else {
984 _name_buffer =
985 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
986 _name_buffer_len = req_len;
987 }
988 }
989 return _name_buffer;
990}
991
992// ------------------------------------------------------------------
993// ciEnv::is_in_vm
994bool ciEnv::is_in_vm() {
995 return JavaThread::current()->thread_state() == _thread_in_vm;
996}
997
998// ------------------------------------------------------------------
999// ciEnv::validate_compile_task_dependencies
1000//
1001// Check for changes during compilation (e.g. class loads, evolution,
1002// breakpoints, call site invalidation).
1003void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
1004 if (failing()) return; // no need for further checks
1005
1006 Dependencies::DepType result = dependencies()->validate_dependencies(_task);
1007 if (result != Dependencies::end_marker) {
1008 if (result == Dependencies::call_site_target_value) {
1009 _inc_decompile_count_on_failure = false;
1010 record_failure("call site target change");
1011 } else if (Dependencies::is_klass_type(result)) {
1012 record_failure("concurrent class loading");
1013 } else {
1014 record_failure("invalid non-klass dependency");
1015 }
1016 }
1017}
1018
1019// ------------------------------------------------------------------
1020// ciEnv::register_method
1021void ciEnv::register_method(ciMethod* target,
1022 int entry_bci,
1023 CodeOffsets* offsets,
1024 int orig_pc_offset,
1025 CodeBuffer* code_buffer,
1026 int frame_words,
1027 OopMapSet* oop_map_set,
1028 ExceptionHandlerTable* handler_table,
1029 ImplicitExceptionTable* inc_table,
1030 AbstractCompiler* compiler,
1031 bool has_unsafe_access,
1032 bool has_wide_vectors,
1033 RTMState rtm_state,
1034 const GrowableArrayView<RuntimeStub*>& native_invokers) {
1035 VM_ENTRY_MARKCompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;
;
1036 nmethod* nm = NULL__null;
1037 {
1038 methodHandle method(THREAD__the_thread__, target->get_Method());
1039
1040 // We require method counters to store some method state (max compilation levels) required by the compilation policy.
1041 if (method->get_method_counters(THREAD__the_thread__) == NULL__null) {
1042 record_failure("can't create method counters");
1043 // All buffers in the CodeBuffer are allocated in the CodeCache.
1044 // If the code buffer is created on each compile attempt
1045 // as in C2, then it must be freed.
1046 code_buffer->free_blob();
1047 return;
1048 }
1049
1050 // To prevent compile queue updates.
1051 MutexLocker locker(THREAD__the_thread__, MethodCompileQueue_lock);
1052
1053 // Prevent SystemDictionary::add_to_hierarchy from running
1054 // and invalidating our dependencies until we install this method.
1055 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
1056 MutexLocker ml(Compile_lock);
1057 NoSafepointVerifier nsv;
1058
1059 // Change in Jvmti state may invalidate compilation.
1060 if (!failing() && jvmti_state_changed()) {
1061 record_failure("Jvmti state change invalidated dependencies");
1062 }
1063
1064 // Change in DTrace flags may invalidate compilation.
1065 if (!failing() &&
1066 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
1067 (!dtrace_method_probes() && DTraceMethodProbes) ||
1068 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
1069 record_failure("DTrace flags change invalidated dependencies");
1070 }
1071
1072 if (!failing() && target->needs_clinit_barrier() &&
1073 target->holder()->is_in_error_state()) {
1074 record_failure("method holder is in error state");
1075 }
1076
1077 if (!failing()) {
1078 if (log() != NULL__null) {
1079 // Log the dependencies which this compilation declares.
1080 dependencies()->log_all_dependencies();
1081 }
1082
1083 // Encode the dependencies now, so we can check them right away.
1084 dependencies()->encode_content_bytes();
1085
1086 // Check for {class loads, evolution, breakpoints, ...} during compilation
1087 validate_compile_task_dependencies(target);
1088 }
1089#if INCLUDE_RTM_OPT1
1090 if (!failing() && (rtm_state != NoRTM) &&
1091 (method()->method_data() != NULL__null) &&
1092 (method()->method_data()->rtm_state() != rtm_state)) {
1093 // Preemptive decompile if rtm state was changed.
1094 record_failure("RTM state change invalidated rtm code");
1095 }
1096#endif
1097
1098 if (failing()) {
1099 // While not a true deoptimization, it is a preemptive decompile.
1100 MethodData* mdo = method()->method_data();
1101 if (mdo != NULL__null && _inc_decompile_count_on_failure) {
1102 mdo->inc_decompile_count();
1103 }
1104
1105 // All buffers in the CodeBuffer are allocated in the CodeCache.
1106 // If the code buffer is created on each compile attempt
1107 // as in C2, then it must be freed.
1108 code_buffer->free_blob();
1109 return;
1110 }
1111
1112 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry")do { if (!(offsets->value(CodeOffsets::Deopt) != -1)) { (*
g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 1112, "assert(" "offsets->value(CodeOffsets::Deopt) != -1"
") failed", "must have deopt entry"); ::breakpoint(); } } while
(0)
;
1113 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry")do { if (!(offsets->value(CodeOffsets::Exceptions) != -1))
{ (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 1113, "assert(" "offsets->value(CodeOffsets::Exceptions) != -1"
") failed", "must have exception entry"); ::breakpoint(); } }
while (0)
;
1114
1115 nm = nmethod::new_nmethod(method,
1116 compile_id(),
1117 entry_bci,
1118 offsets,
1119 orig_pc_offset,
1120 debug_info(), dependencies(), code_buffer,
1121 frame_words, oop_map_set,
1122 handler_table, inc_table,
1123 compiler, task()->comp_level(),
1124 native_invokers);
1125
1126 // Free codeBlobs
1127 code_buffer->free_blob();
1128
1129 if (nm != NULL__null) {
1130 nm->set_has_unsafe_access(has_unsafe_access);
1131 nm->set_has_wide_vectors(has_wide_vectors);
1132#if INCLUDE_RTM_OPT1
1133 nm->set_rtm_state(rtm_state);
1134#endif
1135
1136 // Record successful registration.
1137 // (Put nm into the task handle *before* publishing to the Java heap.)
1138 if (task() != NULL__null) {
1139 task()->set_code(nm);
1140 }
1141
1142 if (entry_bci == InvocationEntryBci) {
1143 if (TieredCompilation) {
1144 // If there is an old version we're done with it
1145 CompiledMethod* old = method->code();
1146 if (TraceMethodReplacement && old != NULL__null) {
1147 ResourceMark rm;
1148 char *method_name = method->name_and_sig_as_C_string();
1149 tty->print_cr("Replacing method %s", method_name);
1150 }
1151 if (old != NULL__null) {
1152 old->make_not_used();
1153 }
1154 }
1155
1156 LogTarget(Info, nmethod, install)LogTargetImpl<LogLevel::Info, (LogTag::_nmethod), (LogTag::
_install), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG
), (LogTag::__NO_TAG)>
lt;
1157 if (lt.is_enabled()) {
1158 ResourceMark rm;
1159 char *method_name = method->name_and_sig_as_C_string();
1160 lt.print("Installing method (%d) %s ",
1161 task()->comp_level(), method_name);
1162 }
1163 // Allow the code to be executed
1164 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
1165 if (nm->make_in_use()) {
1166 method->set_code(method, nm);
1167 }
1168 } else {
1169 LogTarget(Info, nmethod, install)LogTargetImpl<LogLevel::Info, (LogTag::_nmethod), (LogTag::
_install), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG
), (LogTag::__NO_TAG)>
lt;
1170 if (lt.is_enabled()) {
1171 ResourceMark rm;
1172 char *method_name = method->name_and_sig_as_C_string();
1173 lt.print("Installing osr method (%d) %s @ %d",
1174 task()->comp_level(), method_name, entry_bci);
1175 }
1176 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
1177 if (nm->make_in_use()) {
1178 method->method_holder()->add_osr_nmethod(nm);
1179 }
1180 }
1181 }
1182 } // safepoints are allowed again
1183
1184 if (nm != NULL__null) {
1185 // JVMTI -- compiled method notification (must be done outside lock)
1186 nm->post_compiled_method_load_event();
1187 } else {
1188 // The CodeCache is full.
1189 record_failure("code cache is full");
1190 }
1191}
1192
1193// ------------------------------------------------------------------
1194// ciEnv::comp_level
1195int ciEnv::comp_level() {
1196 if (task() == NULL__null) return CompilationPolicy::highest_compile_level();
1197 return task()->comp_level();
1198}
1199
1200// ------------------------------------------------------------------
1201// ciEnv::compile_id
1202uint ciEnv::compile_id() {
1203 if (task() == NULL__null) return 0;
1204 return task()->compile_id();
1205}
1206
1207// ------------------------------------------------------------------
1208// ciEnv::notice_inlined_method()
1209void ciEnv::notice_inlined_method(ciMethod* method) {
1210 _num_inlined_bytecodes += method->code_size_for_inlining();
1211}
1212
1213// ------------------------------------------------------------------
1214// ciEnv::num_inlined_bytecodes()
1215int ciEnv::num_inlined_bytecodes() const {
1216 return _num_inlined_bytecodes;
1217}
1218
1219// ------------------------------------------------------------------
1220// ciEnv::record_failure()
1221void ciEnv::record_failure(const char* reason) {
1222 if (_failure_reason == NULL__null) {
1223 // Record the first failure reason.
1224 _failure_reason = reason;
1225 }
1226}
1227
1228void ciEnv::report_failure(const char* reason) {
1229 EventCompilationFailure event;
1230 if (event.should_commit()) {
1231 CompilerEvent::CompilationFailureEvent::post(event, compile_id(), reason);
1232 }
1233}
1234
1235// ------------------------------------------------------------------
1236// ciEnv::record_method_not_compilable()
1237void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1238 int new_compilable =
1239 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1240
1241 // Only note transitions to a worse state
1242 if (new_compilable > _compilable) {
1243 if (log() != NULL__null) {
1244 if (all_tiers) {
1245 log()->elem("method_not_compilable");
1246 } else {
1247 log()->elem("method_not_compilable_at_tier level='%d'",
1248 current()->task()->comp_level());
1249 }
1250 }
1251 _compilable = new_compilable;
1252
1253 // Reset failure reason; this one is more important.
1254 _failure_reason = NULL__null;
1255 record_failure(reason);
1256 }
1257}
1258
1259// ------------------------------------------------------------------
1260// ciEnv::record_out_of_memory_failure()
1261void ciEnv::record_out_of_memory_failure() {
1262 // If memory is low, we stop compiling methods.
1263 record_method_not_compilable("out of memory");
1264}
1265
1266ciInstance* ciEnv::unloaded_ciinstance() {
1267 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();){if (ciEnv::is_in_vm()) { return _factory->get_unloaded_object_constant
(); } else { CompilerThread* thread=CompilerThread::current()
; ThreadInVMfromNative __tiv(thread); HandleMarkCleaner __hm(
thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { return _factory->get_unloaded_object_constant()
; }}}
1268}
1269
1270// ------------------------------------------------------------------
1271// Replay support
1272
1273
1274// Lookup location descriptor for the class, if any.
1275// Returns false if not found.
1276bool ciEnv::dyno_loc(const InstanceKlass* ik, const char *&loc) const {
1277 bool found = false;
1278 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1279 if (!found) {
1280 return false;
1281 }
1282 loc = _dyno_locs->at(pos);
1283 return found;
1284}
1285
1286// Associate the current location descriptor with the given class and record for later lookup.
1287void ciEnv::set_dyno_loc(const InstanceKlass* ik) {
1288 const char *loc = os::strdup(_dyno_name);
1289 bool found = false;
1290 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1291 if (found) {
1292 _dyno_locs->at_put(pos, loc);
1293 } else {
1294 _dyno_klasses->insert_before(pos, ik);
1295 _dyno_locs->insert_before(pos, loc);
1296 }
1297}
1298
1299// Associate the current location descriptor with the given class and record for later lookup.
1300// If it turns out that there are multiple locations for the given class, that conflict should
1301// be handled here. Currently we choose the first location found.
1302void ciEnv::record_best_dyno_loc(const InstanceKlass* ik) {
1303 if (!ik->is_hidden()) {
1304 return;
1305 }
1306 const char *loc0;
1307 if (dyno_loc(ik, loc0)) {
1308 // TODO: found multiple references, see if we can improve
1309 if (Verbose) {
1310 tty->print_cr("existing call site @ %s for %s",
1311 loc0, ik->external_name());
1312 }
1313 } else {
1314 set_dyno_loc(ik);
1315 }
1316}
1317
1318// Look up the location descriptor for the given class and print it to the output stream.
1319bool ciEnv::print_dyno_loc(outputStream* out, const InstanceKlass* ik) const {
1320 const char *loc;
1321 if (dyno_loc(ik, loc)) {
1322 out->print("%s", loc);
1323 return true;
1324 } else {
1325 return false;
1326 }
1327}
1328
1329// Look up the location descriptor for the given class and return it as a string.
1330// Returns NULL if no location is found.
1331const char *ciEnv::dyno_name(const InstanceKlass* ik) const {
1332 if (ik->is_hidden()) {
1333 stringStream ss;
1334 if (print_dyno_loc(&ss, ik)) {
1335 ss.print(" ;"); // add terminator
1336 const char* call_site = ss.as_string();
1337 return call_site;
1338 }
1339 }
1340 return NULL__null;
1341}
1342
1343// Look up the location descriptor for the given class and return it as a string.
1344// Returns the class name as a fallback if no location is found.
1345const char *ciEnv::replay_name(ciKlass* k) const {
1346 if (k->is_instance_klass()) {
1347 return replay_name(k->as_instance_klass()->get_instanceKlass());
1348 }
1349 return k->name()->as_quoted_ascii();
1350}
1351
1352// Look up the location descriptor for the given class and return it as a string.
1353// Returns the class name as a fallback if no location is found.
1354const char *ciEnv::replay_name(const InstanceKlass* ik) const {
1355 const char* name = dyno_name(ik);
1356 if (name != NULL__null) {
1357 return name;
1358 }
1359 return ik->name()->as_quoted_ascii();
1360}
1361
1362// Process a java.lang.invoke.MemberName object and record any dynamic locations.
1363void ciEnv::record_member(Thread* thread, oop member) {
1364 assert(java_lang_invoke_MemberName::is_instance(member), "!")do { if (!(java_lang_invoke_MemberName::is_instance(member)))
{ (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 1364, "assert(" "java_lang_invoke_MemberName::is_instance(member)"
") failed", "!"); ::breakpoint(); } } while (0)
;
1365 // Check MemberName.clazz field
1366 oop clazz = java_lang_invoke_MemberName::clazz(member);
1367 if (clazz->klass()->is_instance_klass()) {
1368 RecordLocation fp(this, "clazz");
1369 InstanceKlass* ik = InstanceKlass::cast(clazz->klass());
1370 record_best_dyno_loc(ik);
1371 }
1372 // Check MemberName.method.vmtarget field
1373 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(member);
1374 if (vmtarget != NULL__null) {
1375 RecordLocation fp2(this, "<vmtarget>");
1376 InstanceKlass* ik = vmtarget->method_holder();
1377 record_best_dyno_loc(ik);
1378 }
1379}
1380
1381// Read an object field. Lookup is done by name only.
1382static inline oop obj_field(oop obj, const char* name) {
1383 return ciReplay::obj_field(obj, name);
1384}
1385
1386// Process a java.lang.invoke.LambdaForm object and record any dynamic locations.
1387void ciEnv::record_lambdaform(Thread* thread, oop form) {
1388 assert(java_lang_invoke_LambdaForm::is_instance(form), "!")do { if (!(java_lang_invoke_LambdaForm::is_instance(form))) {
(*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 1388, "assert(" "java_lang_invoke_LambdaForm::is_instance(form)"
") failed", "!"); ::breakpoint(); } } while (0)
;
1389
1390 {
1391 // Check LambdaForm.vmentry field
1392 oop member = java_lang_invoke_LambdaForm::vmentry(form);
1393 RecordLocation fp0(this, "vmentry");
1394 record_member(thread, member);
1395 }
1396
1397 // Check LambdaForm.names array
1398 objArrayOop names = (objArrayOop)obj_field(form, "names");
1399 if (names != NULL__null) {
1400 RecordLocation lp0(this, "names");
1401 int len = names->length();
1402 for (int i = 0; i < len; ++i) {
1403 oop name = names->obj_at(i);
1404 RecordLocation lp1(this, "%d", i);
1405 // Check LambdaForm.names[i].function field
1406 RecordLocation lp2(this, "function");
1407 oop function = obj_field(name, "function");
1408 if (function != NULL__null) {
1409 // Check LambdaForm.names[i].function.member field
1410 oop member = obj_field(function, "member");
1411 if (member != NULL__null) {
1412 RecordLocation lp3(this, "member");
1413 record_member(thread, member);
1414 }
1415 // Check LambdaForm.names[i].function.resolvedHandle field
1416 oop mh = obj_field(function, "resolvedHandle");
1417 if (mh != NULL__null) {
1418 RecordLocation lp3(this, "resolvedHandle");
1419 record_mh(thread, mh);
1420 }
1421 // Check LambdaForm.names[i].function.invoker field
1422 oop invoker = obj_field(function, "invoker");
1423 if (invoker != NULL__null) {
1424 RecordLocation lp3(this, "invoker");
1425 record_mh(thread, invoker);
1426 }
1427 }
1428 }
1429 }
1430}
1431
1432// Process a java.lang.invoke.MethodHandle object and record any dynamic locations.
1433void ciEnv::record_mh(Thread* thread, oop mh) {
1434 {
1435 // Check MethodHandle.form field
1436 oop form = java_lang_invoke_MethodHandle::form(mh);
1437 RecordLocation fp(this, "form");
1438 record_lambdaform(thread, form);
1439 }
1440 // Check DirectMethodHandle.member field
1441 if (java_lang_invoke_DirectMethodHandle::is_instance(mh)) {
1442 oop member = java_lang_invoke_DirectMethodHandle::member(mh);
1443 RecordLocation fp(this, "member");
1444 record_member(thread, member);
1445 } else {
1446 // Check <MethodHandle subclass>.argL<n> fields
1447 // Probably BoundMethodHandle.Species_L*, but we only care if the field exists
1448 char arg_name[] = "argLXX";
1449 int max_arg = 99;
1450 for (int index = 0; index <= max_arg; ++index) {
1451 jio_snprintf(arg_name, sizeof (arg_name), "argL%d", index);
1452 oop arg = obj_field(mh, arg_name);
1453 if (arg != NULL__null) {
1454 RecordLocation fp(this, "%s", arg_name);
1455 if (arg->klass()->is_instance_klass()) {
1456 InstanceKlass* ik2 = InstanceKlass::cast(arg->klass());
1457 record_best_dyno_loc(ik2);
1458 record_call_site_obj(thread, arg);
1459 }
1460 } else {
1461 break;
1462 }
1463 }
1464 }
1465}
1466
1467// Process an object found at an invokedynamic/invokehandle call site and record any dynamic locations.
1468// Types currently supported are MethodHandle and CallSite.
1469// The object is typically the "appendix" object, or Bootstrap Method (BSM) object.
1470void ciEnv::record_call_site_obj(Thread* thread, oop obj)
1471{
1472 if (obj != NULL__null) {
1473 if (java_lang_invoke_MethodHandle::is_instance(obj)) {
1474 record_mh(thread, obj);
1475 } else if (java_lang_invoke_ConstantCallSite::is_instance(obj)) {
1476 oop target = java_lang_invoke_CallSite::target(obj);
1477 if (target->klass()->is_instance_klass()) {
1478 RecordLocation fp(this, "target");
1479 InstanceKlass* ik = InstanceKlass::cast(target->klass());
1480 record_best_dyno_loc(ik);
1481 }
1482 }
1483 }
1484}
1485
1486// Process an adapter Method* found at an invokedynamic/invokehandle call site and record any dynamic locations.
1487void ciEnv::record_call_site_method(Thread* thread, Method* adapter) {
1488 InstanceKlass* holder = adapter->method_holder();
1489 if (!holder->is_hidden()) {
1490 return;
1491 }
1492 RecordLocation fp(this, "<adapter>");
1493 record_best_dyno_loc(holder);
1494}
1495
1496// Process an invokedynamic call site and record any dynamic locations.
1497void ciEnv::process_invokedynamic(const constantPoolHandle &cp, int indy_index, JavaThread* thread) {
1498 ConstantPoolCacheEntry* cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(indy_index);
1499 if (cp_cache_entry->is_resolved(Bytecodes::_invokedynamic)) {
1500 // process the adapter
1501 Method* adapter = cp_cache_entry->f1_as_method();
1502 record_call_site_method(thread, adapter);
1503 // process the appendix
1504 oop appendix = cp_cache_entry->appendix_if_resolved(cp);
1505 {
1506 RecordLocation fp(this, "<appendix>");
1507 record_call_site_obj(thread, appendix);
1508 }
1509 // process the BSM
1510 int pool_index = cp_cache_entry->constant_pool_index();
1511 BootstrapInfo bootstrap_specifier(cp, pool_index, indy_index);
1512 oop bsm = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), thread);
1513 {
1514 RecordLocation fp(this, "<bsm>");
1515 record_call_site_obj(thread, bsm);
1516 }
1517 }
1518}
1519
1520// Process an invokehandle call site and record any dynamic locations.
1521void ciEnv::process_invokehandle(const constantPoolHandle &cp, int index, JavaThread* thread) {
1522 const int holder_index = cp->klass_ref_index_at(index);
1523 if (!cp->tag_at(holder_index).is_klass()) {
1524 return; // not resolved
1525 }
1526 Klass* holder = ConstantPool::klass_at_if_loaded(cp, holder_index);
1527 Symbol* name = cp->name_ref_at(index);
1528 if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1529 ConstantPoolCacheEntry* cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
1530 if (cp_cache_entry->is_resolved(Bytecodes::_invokehandle)) {
1531 // process the adapter
1532 Method* adapter = cp_cache_entry->f1_as_method();
1533 oop appendix = cp_cache_entry->appendix_if_resolved(cp);
1534 record_call_site_method(thread, adapter);
1535 // process the appendix
1536 {
1537 RecordLocation fp(this, "<appendix>");
1538 record_call_site_obj(thread, appendix);
1539 }
1540 }
1541 }
1542}
1543
1544// Search the class hierarchy for dynamic classes reachable through dynamic call sites or
1545// constant pool entries and record for future lookup.
1546void ciEnv::find_dynamic_call_sites() {
1547 _dyno_klasses = new (arena()) GrowableArray<const InstanceKlass*>(arena(), 100, 0, NULL__null);
1548 _dyno_locs = new (arena()) GrowableArray<const char *>(arena(), 100, 0, NULL__null);
1549
1550 // Iterate over the class hierarchy
1551 for (ClassHierarchyIterator iter(vmClasses::Object_klass()); !iter.done(); iter.next()) {
1552 Klass* sub = iter.klass();
1553 if (sub->is_instance_klass()) {
1554 InstanceKlass *isub = InstanceKlass::cast(sub);
1555 InstanceKlass* ik = isub;
1556 if (!ik->is_linked()) {
1557 continue;
1558 }
1559 if (ik->is_hidden()) {
1560 continue;
1561 }
1562 JavaThread* thread = JavaThread::current();
1563 const constantPoolHandle pool(thread, ik->constants());
1564
1565 // Look for invokedynamic/invokehandle call sites
1566 for (int i = 0; i < ik->methods()->length(); ++i) {
1567 Method* m = ik->methods()->at(i);
1568
1569 BytecodeStream bcs(methodHandle(thread, m));
1570 while (!bcs.is_last_bytecode()) {
1571 Bytecodes::Code opcode = bcs.next();
Value stored to 'opcode' during its initialization is never read
1572 opcode = bcs.raw_code();
1573 switch (opcode) {
1574 case Bytecodes::_invokedynamic:
1575 case Bytecodes::_invokehandle: {
1576 RecordLocation fp(this, "@bci %s %s %s %d",
1577 ik->name()->as_quoted_ascii(),
1578 m->name()->as_quoted_ascii(), m->signature()->as_quoted_ascii(),
1579 bcs.bci());
1580 if (opcode == Bytecodes::_invokedynamic) {
1581 int index = bcs.get_index_u4();
1582 process_invokedynamic(pool, index, thread);
1583 } else {
1584 assert(opcode == Bytecodes::_invokehandle, "new switch label added?")do { if (!(opcode == Bytecodes::_invokehandle)) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/ci/ciEnv.cpp"
, 1584, "assert(" "opcode == Bytecodes::_invokehandle" ") failed"
, "new switch label added?"); ::breakpoint(); } } while (0)
;
1585 int cp_cache_index = bcs.get_index_u2_cpcache();
1586 process_invokehandle(pool, cp_cache_index, thread);
1587 }
1588 break;
1589 }
1590 default:
1591 break;
1592 }
1593 }
1594 }
1595
1596 // Look for MethodHandle contant pool entries
1597 RecordLocation fp(this, "@cpi %s", ik->name()->as_quoted_ascii());
1598 int len = pool->length();
1599 for (int i = 0; i < len; ++i) {
1600 if (pool->tag_at(i).is_method_handle()) {
1601 bool found_it;
1602 oop mh = pool->find_cached_constant_at(i, found_it, thread);
1603 if (mh != NULL__null) {
1604 RecordLocation fp(this, "%d", i);
1605 record_mh(thread, mh);
1606 }
1607 }
1608 }
1609 }
1610 }
1611}
1612
1613void ciEnv::dump_compile_data(outputStream* out) {
1614 CompileTask* task = this->task();
1615 if (task) {
1616 Method* method = task->method();
1617 int entry_bci = task->osr_bci();
1618 int comp_level = task->comp_level();
1619 out->print("compile ");
1620 get_method(method)->dump_name_as_ascii(out);
1621 out->print(" %d %d", entry_bci, comp_level);
1622 if (compiler_data() != NULL__null) {
1623 if (is_c2_compile(comp_level)) {
1624#ifdef COMPILER21
1625 // Dump C2 inlining data.
1626 ((Compile*)compiler_data())->dump_inline_data(out);
1627#endif
1628 } else if (is_c1_compile(comp_level)) {
1629#ifdef COMPILER11
1630 // Dump C1 inlining data.
1631 ((Compilation*)compiler_data())->dump_inline_data(out);
1632#endif
1633 }
1634 }
1635 out->cr();
1636 }
1637}
1638
1639// Called from VM error reporter, so be careful.
1640// Don't safepoint or acquire any locks.
1641//
1642void ciEnv::dump_replay_data_helper(outputStream* out) {
1643 NoSafepointVerifier no_safepoint;
1644 ResourceMark rm;
1645
1646 out->print_cr("version %d", REPLAY_VERSION2);
1647#if INCLUDE_JVMTI1
1648 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1649 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1650 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1651#endif // INCLUDE_JVMTI
1652
1653 find_dynamic_call_sites();
1654
1655 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1656 out->print_cr("# %d ciObject found", objects->length());
1657
1658 // The very first entry is the InstanceKlass of the root method of the current compilation in order to get the right
1659 // protection domain to load subsequent classes during replay compilation.
1660 ciInstanceKlass::dump_replay_instanceKlass(out, task()->method()->method_holder());
1661
1662 for (int i = 0; i < objects->length(); i++) {
1663 objects->at(i)->dump_replay_data(out);
1664 }
1665 dump_compile_data(out);
1666 out->flush();
1667}
1668
1669// Called from VM error reporter, so be careful.
1670// Don't safepoint or acquire any locks.
1671//
1672void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1673 GUARDED_VM_ENTRY({if (ciEnv::is_in_vm()) { dump_replay_data_helper(out); } else
{ CompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;; { dump_replay_data_helper
(out); }}}
1674 dump_replay_data_helper(out);{if (ciEnv::is_in_vm()) { dump_replay_data_helper(out); } else
{ CompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;; { dump_replay_data_helper
(out); }}}
1675 ){if (ciEnv::is_in_vm()) { dump_replay_data_helper(out); } else
{ CompilerThread* thread=CompilerThread::current(); ThreadInVMfromNative
__tiv(thread); HandleMarkCleaner __hm(thread); JavaThread* __the_thread__
= thread; VMNativeEntryWrapper __vew;; { dump_replay_data_helper
(out); }}}
1676}
1677
1678void ciEnv::dump_replay_data(outputStream* out) {
1679 GUARDED_VM_ENTRY({if (ciEnv::is_in_vm()) { MutexLocker ml(Compile_lock); dump_replay_data_helper
(out); } else { CompilerThread* thread=CompilerThread::current
(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner __hm
(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { MutexLocker ml(Compile_lock); dump_replay_data_helper
(out); }}}
1680 MutexLocker ml(Compile_lock);{if (ciEnv::is_in_vm()) { MutexLocker ml(Compile_lock); dump_replay_data_helper
(out); } else { CompilerThread* thread=CompilerThread::current
(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner __hm
(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { MutexLocker ml(Compile_lock); dump_replay_data_helper
(out); }}}
1681 dump_replay_data_helper(out);{if (ciEnv::is_in_vm()) { MutexLocker ml(Compile_lock); dump_replay_data_helper
(out); } else { CompilerThread* thread=CompilerThread::current
(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner __hm
(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { MutexLocker ml(Compile_lock); dump_replay_data_helper
(out); }}}
1682 ){if (ciEnv::is_in_vm()) { MutexLocker ml(Compile_lock); dump_replay_data_helper
(out); } else { CompilerThread* thread=CompilerThread::current
(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner __hm
(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { MutexLocker ml(Compile_lock); dump_replay_data_helper
(out); }}}
1683}
1684
1685void ciEnv::dump_replay_data(int compile_id) {
1686 char buffer[64];
1687 int ret = jio_snprintf(buffer, sizeof(buffer), "replay_pid%d_compid%d.log", os::current_process_id(), compile_id);
1688 if (ret > 0) {
1689 int fd = os::open(buffer, O_RDWR02 | O_CREAT0100 | O_TRUNC01000, 0666);
1690 if (fd != -1) {
1691 FILE* replay_data_file = os::open(fd, "w");
1692 if (replay_data_file != NULL__null) {
1693 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1694 dump_replay_data(&replay_data_stream);
1695 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1696 } else {
1697 tty->print_cr("# Can't open file to dump replay data.");
1698 }
1699 }
1700 }
1701}
1702
1703void ciEnv::dump_inline_data(int compile_id) {
1704 char buffer[64];
1705 int ret = jio_snprintf(buffer, sizeof(buffer), "inline_pid%d_compid%d.log", os::current_process_id(), compile_id);
1706 if (ret > 0) {
1707 int fd = os::open(buffer, O_RDWR02 | O_CREAT0100 | O_TRUNC01000, 0666);
1708 if (fd != -1) {
1709 FILE* inline_data_file = os::open(fd, "w");
1710 if (inline_data_file != NULL__null) {
1711 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1712 GUARDED_VM_ENTRY({if (ciEnv::is_in_vm()) { MutexLocker ml(Compile_lock); dump_compile_data
(&replay_data_stream); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { MutexLocker ml(Compile_lock); dump_compile_data(&
replay_data_stream); }}}
1713 MutexLocker ml(Compile_lock);{if (ciEnv::is_in_vm()) { MutexLocker ml(Compile_lock); dump_compile_data
(&replay_data_stream); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { MutexLocker ml(Compile_lock); dump_compile_data(&
replay_data_stream); }}}
1714 dump_compile_data(&replay_data_stream);{if (ciEnv::is_in_vm()) { MutexLocker ml(Compile_lock); dump_compile_data
(&replay_data_stream); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { MutexLocker ml(Compile_lock); dump_compile_data(&
replay_data_stream); }}}
1715 ){if (ciEnv::is_in_vm()) { MutexLocker ml(Compile_lock); dump_compile_data
(&replay_data_stream); } else { CompilerThread* thread=CompilerThread
::current(); ThreadInVMfromNative __tiv(thread); HandleMarkCleaner
__hm(thread); JavaThread* __the_thread__ = thread; VMNativeEntryWrapper
__vew;; { MutexLocker ml(Compile_lock); dump_compile_data(&
replay_data_stream); }}}
1716 replay_data_stream.flush();
1717 tty->print("# Compiler inline data is saved as: ");
1718 tty->print_cr("%s", buffer);
1719 } else {
1720 tty->print_cr("# Can't open file to dump inline data.");
1721 }
1722 }
1723 }
1724}