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comparison src/share/vm/memory/sharedHeap.cpp @ 342:37f87013dfd8

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6711316: Open source the Garbage-First garbage collector Summary: First mercurial integration of the code for the Garbage-First garbage collector. Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
author ysr
date Thu, 05 Jun 2008 15:57:56 -0700
parents ba764ed4b6f2
children 1ee8caae33af
comparison
equal deleted inserted replaced
189:0b27f3512f9e 342:37f87013dfd8
55 if (_process_strong_tasks == NULL || !_process_strong_tasks->valid()) { 55 if (_process_strong_tasks == NULL || !_process_strong_tasks->valid()) {
56 vm_exit_during_initialization("Failed necessary allocation."); 56 vm_exit_during_initialization("Failed necessary allocation.");
57 } 57 }
58 _sh = this; // ch is static, should be set only once. 58 _sh = this; // ch is static, should be set only once.
59 if ((UseParNewGC || 59 if ((UseParNewGC ||
60 (UseConcMarkSweepGC && CMSParallelRemarkEnabled)) && 60 (UseConcMarkSweepGC && CMSParallelRemarkEnabled) ||
61 UseG1GC) &&
61 ParallelGCThreads > 0) { 62 ParallelGCThreads > 0) {
62 _workers = new WorkGang("Parallel GC Threads", ParallelGCThreads, true); 63 _workers = new WorkGang("Parallel GC Threads", ParallelGCThreads,
64 /* are_GC_task_threads */true,
65 /* are_ConcurrentGC_threads */false);
63 if (_workers == NULL) { 66 if (_workers == NULL) {
64 vm_exit_during_initialization("Failed necessary allocation."); 67 vm_exit_during_initialization("Failed necessary allocation.");
65 } 68 }
66 } 69 }
67 } 70 }
68 71
72 bool SharedHeap::heap_lock_held_for_gc() {
73 Thread* t = Thread::current();
74 return Heap_lock->owned_by_self()
75 || ( (t->is_GC_task_thread() || t->is_VM_thread())
76 && _thread_holds_heap_lock_for_gc);
77 }
69 78
70 void SharedHeap::set_par_threads(int t) { 79 void SharedHeap::set_par_threads(int t) {
71 _n_par_threads = t; 80 _n_par_threads = t;
72 _process_strong_tasks->set_par_threads(t); 81 _process_strong_tasks->set_par_threads(t);
73 } 82 }
278 mr.word_size()); 287 mr.word_size());
279 } 288 }
280 } 289 }
281 290
282 // Some utilities. 291 // Some utilities.
283 void SharedHeap::print_size_transition(size_t bytes_before, 292 void SharedHeap::print_size_transition(outputStream* out,
293 size_t bytes_before,
284 size_t bytes_after, 294 size_t bytes_after,
285 size_t capacity) { 295 size_t capacity) {
286 tty->print(" %d%s->%d%s(%d%s)", 296 out->print(" %d%s->%d%s(%d%s)",
287 byte_size_in_proper_unit(bytes_before), 297 byte_size_in_proper_unit(bytes_before),
288 proper_unit_for_byte_size(bytes_before), 298 proper_unit_for_byte_size(bytes_before),
289 byte_size_in_proper_unit(bytes_after), 299 byte_size_in_proper_unit(bytes_after),
290 proper_unit_for_byte_size(bytes_after), 300 proper_unit_for_byte_size(bytes_after),
291 byte_size_in_proper_unit(capacity), 301 byte_size_in_proper_unit(capacity),