| File: | jdk/src/hotspot/share/gc/shared/gcTraceTime.cpp |
| Warning: | line 51, column 10 Value stored to 'start_time_in_secs' during its initialization is never read |
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| 1 | /* |
| 2 | * Copyright (c) 2012, 2015, 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 "gc/shared/collectedHeap.hpp" |
| 27 | #include "gc/shared/gcTraceTime.inline.hpp" |
| 28 | #include "logging/log.hpp" |
| 29 | #include "logging/logStream.hpp" |
| 30 | #include "memory/universe.hpp" |
| 31 | #include "runtime/os.hpp" |
| 32 | |
| 33 | void GCTraceTimeLoggerImpl::log_start(Ticks start) { |
| 34 | _start = start; |
| 35 | |
| 36 | LogStream out(_out_start); |
| 37 | |
| 38 | out.print("%s", _title); |
| 39 | if (_gc_cause != GCCause::_no_gc) { |
| 40 | out.print(" (%s)", GCCause::to_string(_gc_cause)); |
| 41 | } |
| 42 | out.cr(); |
| 43 | |
| 44 | if (_log_heap_usage) { |
| 45 | _heap_usage_before = Universe::heap()->used(); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | void GCTraceTimeLoggerImpl::log_end(Ticks end) { |
| 50 | double duration_in_ms = TimeHelper::counter_to_millis(end.value() - _start.value()); |
| 51 | double start_time_in_secs = TimeHelper::counter_to_seconds(_start.value()); |
Value stored to 'start_time_in_secs' during its initialization is never read | |
| 52 | double stop_time_in_secs = TimeHelper::counter_to_seconds(end.value()); |
| 53 | |
| 54 | LogStream out(_out_end); |
| 55 | |
| 56 | out.print("%s", _title); |
| 57 | |
| 58 | if (_gc_cause != GCCause::_no_gc) { |
| 59 | out.print(" (%s)", GCCause::to_string(_gc_cause)); |
| 60 | } |
| 61 | |
| 62 | if (_heap_usage_before != SIZE_MAX(18446744073709551615UL)) { |
| 63 | CollectedHeap* heap = Universe::heap(); |
| 64 | size_t used_before_m = _heap_usage_before / M; |
| 65 | size_t used_m = heap->used() / M; |
| 66 | size_t capacity_m = heap->capacity() / M; |
| 67 | out.print(" " SIZE_FORMAT"%" "l" "u" "M->" SIZE_FORMAT"%" "l" "u" "M(" SIZE_FORMAT"%" "l" "u" "M)", used_before_m, used_m, capacity_m); |
| 68 | } |
| 69 | |
| 70 | out.print_cr(" %.3fms", duration_in_ms); |
| 71 | } |
| 72 | |
| 73 | GCTraceCPUTime::GCTraceCPUTime() : |
| 74 | _active(log_is_enabled(Info, gc, cpu)(LogImpl<(LogTag::_gc), (LogTag::_cpu), (LogTag::__NO_TAG) , (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG)> ::is_level(LogLevel::Info))), |
| 75 | _starting_user_time(0.0), |
| 76 | _starting_system_time(0.0), |
| 77 | _starting_real_time(0.0) |
| 78 | { |
| 79 | if (_active) { |
| 80 | bool valid = os::getTimesSecs(&_starting_real_time, |
| 81 | &_starting_user_time, |
| 82 | &_starting_system_time); |
| 83 | if (!valid) { |
| 84 | log_warning(gc, cpu)(!(LogImpl<(LogTag::_gc), (LogTag::_cpu), (LogTag::__NO_TAG ), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG) >::is_level(LogLevel::Warning))) ? (void)0 : LogImpl<(LogTag ::_gc), (LogTag::_cpu), (LogTag::__NO_TAG), (LogTag::__NO_TAG ), (LogTag::__NO_TAG), (LogTag::__NO_TAG)>::write<LogLevel ::Warning>("TraceCPUTime: os::getTimesSecs() returned invalid result"); |
| 85 | _active = false; |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | GCTraceCPUTime::~GCTraceCPUTime() { |
| 91 | if (_active) { |
| 92 | double real_time, user_time, system_time; |
| 93 | bool valid = os::getTimesSecs(&real_time, &user_time, &system_time); |
| 94 | if (valid) { |
| 95 | log_info(gc, cpu)(!(LogImpl<(LogTag::_gc), (LogTag::_cpu), (LogTag::__NO_TAG ), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG) >::is_level(LogLevel::Info))) ? (void)0 : LogImpl<(LogTag ::_gc), (LogTag::_cpu), (LogTag::__NO_TAG), (LogTag::__NO_TAG ), (LogTag::__NO_TAG), (LogTag::__NO_TAG)>::write<LogLevel ::Info>("User=%3.2fs Sys=%3.2fs Real=%3.2fs", |
| 96 | user_time - _starting_user_time, |
| 97 | system_time - _starting_system_time, |
| 98 | real_time - _starting_real_time); |
| 99 | } else { |
| 100 | log_warning(gc, cpu)(!(LogImpl<(LogTag::_gc), (LogTag::_cpu), (LogTag::__NO_TAG ), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG) >::is_level(LogLevel::Warning))) ? (void)0 : LogImpl<(LogTag ::_gc), (LogTag::_cpu), (LogTag::__NO_TAG), (LogTag::__NO_TAG ), (LogTag::__NO_TAG), (LogTag::__NO_TAG)>::write<LogLevel ::Warning>("TraceCPUTime: os::getTimesSecs() returned invalid result"); |
| 101 | } |
| 102 | } |
| 103 | } |