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This commit is contained in:
Zhengyu Gu 2012-07-19 09:10:12 -04:00
commit a0930ac7cd
3 changed files with 15 additions and 7 deletions
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2
hotspot/src/share/vm/services/memSnapshot.cpp
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@ -173,7 +173,7 @@ MemSnapshot::MemSnapshot() {
_staging_area = new (std::nothrow)MemPointerArrayImpl<SeqMemPointerRecord>();
}
_lock = new (std::nothrow) Mutex(Monitor::native, "memSnapshotLock");
_lock = new (std::nothrow) Mutex(Monitor::max_nonleaf - 1, "memSnapshotLock");
NOT_PRODUCT(_untracked_count = 0;)
}

16
hotspot/src/share/vm/services/memTracker.cpp
View file

@ -54,7 +54,7 @@ void SyncThreadRecorderClosure::do_thread(Thread* thread) {
MemRecorder* MemTracker::_global_recorder = NULL;
MemSnapshot* MemTracker::_snapshot = NULL;
MemBaseline MemTracker::_baseline;
Mutex MemTracker::_query_lock(Monitor::native, "NMT_queryLock");
Mutex* MemTracker::_query_lock = NULL;
volatile MemRecorder* MemTracker::_merge_pending_queue = NULL;
volatile MemRecorder* MemTracker::_pooled_recorders = NULL;
MemTrackWorker* MemTracker::_worker_thread = NULL;
@ -89,6 +89,12 @@ void MemTracker::bootstrap_single_thread() {
return;
}
_query_lock = new (std::nothrow) Mutex(Monitor::max_nonleaf, "NMT_queryLock");
if (_query_lock == NULL) {
shutdown(NMT_out_of_memory);
return;
}
debug_only(_main_thread_tid = os::current_thread_id();)
_state = NMT_bootstrapping_single_thread;
NMT_track_callsite = (_tracking_level == NMT_detail && can_walk_stack());
@ -164,7 +170,7 @@ void MemTracker::final_shutdown() {
{
// shared baseline and snapshot are the only objects needed to
// create query results
MutexLockerEx locker(&_query_lock, true);
MutexLockerEx locker(_query_lock, true);
// cleanup baseline data and snapshot
_baseline.clear();
delete _snapshot;
@ -536,7 +542,7 @@ void MemTracker::thread_exiting(JavaThread* thread) {
// baseline current memory snapshot
bool MemTracker::baseline() {
MutexLockerEx lock(&_query_lock, true);
MutexLockerEx lock(_query_lock, true);
MemSnapshot* snapshot = get_snapshot();
if (snapshot != NULL) {
return _baseline.baseline(*snapshot, false);
@ -547,7 +553,7 @@ bool MemTracker::baseline() {
// print memory usage from current snapshot
bool MemTracker::print_memory_usage(BaselineOutputer& out, size_t unit, bool summary_only) {
MemBaseline baseline;
MutexLockerEx lock(&_query_lock, true);
MutexLockerEx lock(_query_lock, true);
MemSnapshot* snapshot = get_snapshot();
if (snapshot != NULL && baseline.baseline(*snapshot, summary_only)) {
BaselineReporter reporter(out, unit);
@ -559,7 +565,7 @@ bool MemTracker::print_memory_usage(BaselineOutputer& out, size_t unit, bool sum
// compare memory usage between current snapshot and baseline
bool MemTracker::compare_memory_usage(BaselineOutputer& out, size_t unit, bool summary_only) {
MutexLockerEx lock(&_query_lock, true);
MutexLockerEx lock(_query_lock, true);
if (_baseline.baselined()) {
MemBaseline baseline;
MemSnapshot* snapshot = get_snapshot();

4
hotspot/src/share/vm/services/memTracker.hpp
View file

@ -126,6 +126,8 @@ class MemTracker : AllStatic {
return "Native memory tracking has been shutdown by user";
case NMT_normal:
return "Native memory tracking has been shutdown due to process exiting";
case NMT_out_of_memory:
return "Native memory tracking has been shutdown due to out of native memory";
case NMT_initialization:
return "Native memory tracking failed to initialize";
case NMT_error_reporting:
@ -336,7 +338,7 @@ class MemTracker : AllStatic {
static MemBaseline _baseline;
// query lock
static Mutex _query_lock;
static Mutex* _query_lock;
// a thread can start to allocate memory before it is attached
// to VM 'Thread', those memory activities are recorded here.