30 #include "jfr/leakprofiler/sampling/objectSampler.hpp"
31 #include "jfr/recorder/service/jfrOptionSet.hpp"
32 #include "memory/iterator.hpp"
33 #include "oops/oop.hpp"
34 #include "runtime/atomic.hpp"
35 #include "runtime/orderAccess.hpp"
36 #include "runtime/thread.inline.hpp"
37 #include "runtime/vmThread.hpp"
38 #include "utilities/ostream.hpp"
39
40 // Only to be updated during safepoint
41 ObjectSampler* LeakProfiler::_object_sampler = NULL;
42
43 static volatile jbyte suspended = 0;
44 bool LeakProfiler::start(jint sample_count) {
45 if (UseZGC) {
46 log_warning(jfr)("LeakProfiler is currently not supported in combination with ZGC");
47 return false;
48 }
49
50 if (_object_sampler != NULL) {
51 // already started
52 return true;
53 }
54 // Allows user to disable leak profiler on command line by setting queue size to zero.
55 if (sample_count > 0) {
56 StartOperation op(sample_count);
57 VMThread::execute(&op);
58 return _object_sampler != NULL;
59 }
60 return false;
61 }
62
63 bool LeakProfiler::stop() {
64 if (_object_sampler == NULL) {
65 // already stopped/not started
66 return true;
67 }
68 StopOperation op;
69 VMThread::execute(&op);
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30 #include "jfr/leakprofiler/sampling/objectSampler.hpp"
31 #include "jfr/recorder/service/jfrOptionSet.hpp"
32 #include "memory/iterator.hpp"
33 #include "oops/oop.hpp"
34 #include "runtime/atomic.hpp"
35 #include "runtime/orderAccess.hpp"
36 #include "runtime/thread.inline.hpp"
37 #include "runtime/vmThread.hpp"
38 #include "utilities/ostream.hpp"
39
40 // Only to be updated during safepoint
41 ObjectSampler* LeakProfiler::_object_sampler = NULL;
42
43 static volatile jbyte suspended = 0;
44 bool LeakProfiler::start(jint sample_count) {
45 if (UseZGC) {
46 log_warning(jfr)("LeakProfiler is currently not supported in combination with ZGC");
47 return false;
48 }
49
50 if (UseShenandoahGC) {
51 log_warning(jfr)("LeakProfiler is currently not supported in combination with Shenandoah GC");
52 return false;
53 }
54
55 if (_object_sampler != NULL) {
56 // already started
57 return true;
58 }
59 // Allows user to disable leak profiler on command line by setting queue size to zero.
60 if (sample_count > 0) {
61 StartOperation op(sample_count);
62 VMThread::execute(&op);
63 return _object_sampler != NULL;
64 }
65 return false;
66 }
67
68 bool LeakProfiler::stop() {
69 if (_object_sampler == NULL) {
70 // already stopped/not started
71 return true;
72 }
73 StopOperation op;
74 VMThread::execute(&op);
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