Mercurial > hg > truffle

comparison src/share/vm/memory/gcLocker.cpp @ 4944:09d00c18e323

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
7145537: minor tweaks to LogEvents Reviewed-by: kvn, twisti
author never
date Wed, 15 Feb 2012 10:12:55 -0800
parents 0382d2b469b2
children 2c022e432e10
comparison
equal deleted inserted replaced
4943:80107dc493db 4944:09d00c18e323
29 29
30 volatile jint GC_locker::_jni_lock_count = 0; 30 volatile jint GC_locker::_jni_lock_count = 0;
31 volatile jint GC_locker::_lock_count = 0; 31 volatile jint GC_locker::_lock_count = 0;
32 volatile bool GC_locker::_needs_gc = false; 32 volatile bool GC_locker::_needs_gc = false;
33 volatile bool GC_locker::_doing_gc = false; 33 volatile bool GC_locker::_doing_gc = false;
34 jlong GC_locker::_wait_begin = 0;
35 34
36 #ifdef ASSERT 35 #ifdef ASSERT
37 volatile jint GC_locker::_debug_jni_lock_count = 0; 36 volatile jint GC_locker::_debug_jni_lock_count = 0;
38 #endif 37 #endif
39 38
67 if (is_active() && !_needs_gc) { 66 if (is_active() && !_needs_gc) {
68 verify_critical_count(); 67 verify_critical_count();
69 _needs_gc = true; 68 _needs_gc = true;
70 if (PrintJNIGCStalls && PrintGCDetails) { 69 if (PrintJNIGCStalls && PrintGCDetails) {
71 ResourceMark rm; // JavaThread::name() allocates to convert to UTF8 70 ResourceMark rm; // JavaThread::name() allocates to convert to UTF8
72 _wait_begin = os::javaTimeNanos() / NANOSECS_PER_MILLISEC; 71 gclog_or_tty->print_cr("%.3f: Setting _needs_gc. Thread \"%s\" %d locked.",
73 gclog_or_tty->print_cr(INT64_FORMAT ": Setting _needs_gc. Thread \"%s\" %d locked.", 72 gclog_or_tty->time_stamp().seconds(), Thread::current()->name(), _jni_lock_count);
74 _wait_begin, Thread::current()->name(), _jni_lock_count);
75 } 73 }
76 74
77 } 75 }
78 return is_active(); 76 return is_active();
79 } 77 }
83 MutexLocker ml(JNICritical_lock); 81 MutexLocker ml(JNICritical_lock);
84 82
85 if (needs_gc()) { 83 if (needs_gc()) {
86 if (PrintJNIGCStalls && PrintGCDetails) { 84 if (PrintJNIGCStalls && PrintGCDetails) {
87 ResourceMark rm; // JavaThread::name() allocates to convert to UTF8 85 ResourceMark rm; // JavaThread::name() allocates to convert to UTF8
88 gclog_or_tty->print_cr(INT64_FORMAT ": Allocation failed. Thread \"%s\" is stalled by JNI critical section, %d locked.", 86 gclog_or_tty->print_cr("%.3f: Allocation failed. Thread \"%s\" is stalled by JNI critical section, %d locked.",
89 (os::javaTimeNanos() / NANOSECS_PER_MILLISEC) - _wait_begin, Thread::current()->name(), _jni_lock_count); 87 gclog_or_tty->time_stamp().seconds(), Thread::current()->name(), _jni_lock_count);
90 } 88 }
91 } 89 }
92 90
93 // Wait for _needs_gc to be cleared 91 // Wait for _needs_gc to be cleared
94 while (needs_gc()) { 92 while (needs_gc()) {
129 { 127 {
130 // Must give up the lock while at a safepoint 128 // Must give up the lock while at a safepoint
131 MutexUnlocker munlock(JNICritical_lock); 129 MutexUnlocker munlock(JNICritical_lock);
132 if (PrintJNIGCStalls && PrintGCDetails) { 130 if (PrintJNIGCStalls && PrintGCDetails) {
133 ResourceMark rm; // JavaThread::name() allocates to convert to UTF8 131 ResourceMark rm; // JavaThread::name() allocates to convert to UTF8
134 gclog_or_tty->print_cr(INT64_FORMAT ": Thread \"%s\" is performing GC after exiting critical section, %d locked", 132 gclog_or_tty->print_cr("%.3f: Thread \"%s\" is performing GC after exiting critical section, %d locked",
135 (os::javaTimeNanos() / NANOSECS_PER_MILLISEC) - _wait_begin, Thread::current()->name(), _jni_lock_count); 133 gclog_or_tty->time_stamp().seconds(), Thread::current()->name(), _jni_lock_count);
136 } 134 }
137 Universe::heap()->collect(GCCause::_gc_locker); 135 Universe::heap()->collect(GCCause::_gc_locker);
138 } 136 }
139 _doing_gc = false; 137 _doing_gc = false;
140 } 138 }