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6966589: hs16-b08 causes java.lang.StackOverflowError

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Reviewed-by: mchung, dholmes, chrisphi
This commit is contained in:
Yumin Qi 2010-10-07 13:49:40 -07:00
parent bb7771888b
commit 612faf72b7
2 changed files with 104 additions and 100 deletions
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58
hotspot/src/share/vm/classfile/classLoader.cpp
View File

@ -1382,3 +1382,61 @@ void ClassLoader::compile_the_world_in(char* name, Handle loader, TRAPS) {
}
#endif //PRODUCT
// Please keep following two functions at end of this file. With them placed at top or in middle of the file,
// they could get inlined by agressive compiler, an unknown trick, see bug 6966589.
void PerfClassTraceTime::initialize() {
if (!UsePerfData) return;
if (_eventp != NULL) {
// increment the event counter
_eventp->inc();
}
// stop the current active thread-local timer to measure inclusive time
_prev_active_event = -1;
for (int i=0; i < EVENT_TYPE_COUNT; i++) {
if (_timers[i].is_active()) {
assert(_prev_active_event == -1, "should have only one active timer");
_prev_active_event = i;
_timers[i].stop();
}
}
if (_recursion_counters == NULL || (_recursion_counters[_event_type])++ == 0) {
// start the inclusive timer if not recursively called
_t.start();
}
// start thread-local timer of the given event type
if (!_timers[_event_type].is_active()) {
_timers[_event_type].start();
}
}
PerfClassTraceTime::~PerfClassTraceTime() {
if (!UsePerfData) return;
// stop the thread-local timer as the event completes
// and resume the thread-local timer of the event next on the stack
_timers[_event_type].stop();
jlong selftime = _timers[_event_type].ticks();
if (_prev_active_event >= 0) {
_timers[_prev_active_event].start();
}
if (_recursion_counters != NULL && --(_recursion_counters[_event_type]) > 0) return;
// increment the counters only on the leaf call
_t.stop();
_timep->inc(_t.ticks());
if (_selftimep != NULL) {
_selftimep->inc(selftime);
}
// add all class loading related event selftime to the accumulated time counter
ClassLoader::perf_accumulated_time()->inc(selftime);
// reset the timer
_timers[_event_type].reset();
}

58
hotspot/src/share/vm/classfile/classLoader.hpp
View File

@ -402,65 +402,11 @@ class PerfClassTraceTime {
initialize();
}
void initialize() {
if (!UsePerfData) return;
if (_eventp != NULL) {
// increment the event counter
_eventp->inc();
}
// stop the current active thread-local timer to measure inclusive time
_prev_active_event = -1;
for (int i=0; i < EVENT_TYPE_COUNT; i++) {
if (_timers[i].is_active()) {
assert(_prev_active_event == -1, "should have only one active timer");
_prev_active_event = i;
_timers[i].stop();
}
}
if (_recursion_counters == NULL || (_recursion_counters[_event_type])++ == 0) {
// start the inclusive timer if not recursively called
_t.start();
}
// start thread-local timer of the given event type
if (!_timers[_event_type].is_active()) {
_timers[_event_type].start();
}
}
inline void suspend() { _t.stop(); _timers[_event_type].stop(); }
inline void resume() { _t.start(); _timers[_event_type].start(); }
~PerfClassTraceTime() {
if (!UsePerfData) return;
// stop the thread-local timer as the event completes
// and resume the thread-local timer of the event next on the stack
_timers[_event_type].stop();
jlong selftime = _timers[_event_type].ticks();
if (_prev_active_event >= 0) {
_timers[_prev_active_event].start();
}
if (_recursion_counters != NULL && --(_recursion_counters[_event_type]) > 0) return;
// increment the counters only on the leaf call
_t.stop();
_timep->inc(_t.ticks());
if (_selftimep != NULL) {
_selftimep->inc(selftime);
}
// add all class loading related event selftime to the accumulated time counter
ClassLoader::perf_accumulated_time()->inc(selftime);
// reset the timer
_timers[_event_type].reset();
}
~PerfClassTraceTime();
void initialize();
};
#endif // SHARE_VM_CLASSFILE_CLASSLOADER_HPP