/*
* Copyright ( c ) 2012 , 2022 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*
*/
#include "precompiled.hpp"
#include "gc/shared/collectedHeap.hpp"
#include "gc/shared/gcTraceTime.inline.hpp"
#include "gc/shared/gcTrace.hpp"
#include "logging/log.hpp"
#include "logging/logStream.hpp"
#include "memory/universe.hpp"
#include "runtime/os.hpp"
void GCTraceTimeLoggerImpl::log_start(Ticks start) {
_start = start;
LogStream out(_out_start);
out.print("%s" , _title);
if (_gc_cause != GCCause::_no_gc) {
out.print(" (%s)" , GCCause::to_string(_gc_cause));
}
out.cr();
if (_log_heap_usage) {
_heap_usage_before = Universe::heap()->used();
}
}
void GCTraceTimeLoggerImpl::log_end(Ticks end) {
double duration_in_ms = TimeHelper::counter_to_millis(end.value() - _start.value());
double start_time_in_secs = TimeHelper::counter_to_seconds(_start.value());
double stop_time_in_secs = TimeHelper::counter_to_seconds(end.value());
LogStream out(_out_end);
out.print("%s" , _title);
if (_gc_cause != GCCause::_no_gc) {
out.print(" (%s)" , GCCause::to_string(_gc_cause));
}
if (_heap_usage_before != SIZE_MAX) {
CollectedHeap* heap = Universe::heap();
size_t used_before_m = _heap_usage_before / M;
size_t used_m = heap->used() / M;
size_t capacity_m = heap->capacity() / M;
out.print(" " SIZE_FORMAT "M->" SIZE_FORMAT "M(" SIZE_FORMAT "M)" , used_before_m, used_m, capacity_m);
}
out.print_cr(" %.3fms" , duration_in_ms);
}
GCTraceCPUTime::GCTraceCPUTime(GCTracer* tracer) :
_active(log_is_enabled(Info, gc, cpu) ||
(tracer != nullptr && tracer->should_report_cpu_time_event())),
_starting_user_time(0 .0 ),
_starting_system_time(0 .0 ),
_starting_real_time(0 .0 ),
_tracer(tracer)
{
if (_active) {
bool valid = os::getTimesSecs(&_starting_real_time,
&_starting_user_time,
&_starting_system_time);
if (!valid) {
log_warning(gc, cpu)("TraceCPUTime: os::getTimesSecs() returned invalid result" );
_active = false ;
}
}
}
GCTraceCPUTime::~GCTraceCPUTime() {
if (_active) {
double real_time, user_time, system_time;
bool valid = os::getTimesSecs(&real_time, &user_time, &system_time);
if (valid) {
user_time -= _starting_user_time;
system_time -= _starting_system_time;
real_time -= _starting_real_time;
log_info(gc, cpu)("User=%3.2fs Sys=%3.2fs Real=%3.2fs" , user_time, system_time, real_time);
if (_tracer != nullptr) {
_tracer->report_cpu_time_event(user_time, system_time, real_time);
}
} else {
log_warning(gc, cpu)("TraceCPUTime: os::getTimesSecs() returned invalid result" );
}
}
}
Messung V0.5 in Prozent C=88 H=91 G=89
¤ Dauer der Verarbeitung: 0.17 Sekunden
(vorverarbeitet am 2026-06-10)
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