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6711316: Open source the Garbage-First garbage collector

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First mercurial integration of the code for the Garbage-First garbage collector.

Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
This commit is contained in:
Y. Srinivas Ramakrishna 2008-06-05 15:57:56 -07:00
parent 39463bb3fc
commit 18f3386a98
215 changed files with 36088 additions and 1249 deletions
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18
hotspot/src/share/vm/memory/sharedHeap.cpp
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@ -57,15 +57,24 @@ SharedHeap::SharedHeap(CollectorPolicy* policy_) :
}
_sh = this; // ch is static, should be set only once.
if ((UseParNewGC ||
(UseConcMarkSweepGC && CMSParallelRemarkEnabled)) &&
(UseConcMarkSweepGC && CMSParallelRemarkEnabled) ||
UseG1GC) &&
ParallelGCThreads > 0) {
_workers = new WorkGang("Parallel GC Threads", ParallelGCThreads, true);
_workers = new WorkGang("Parallel GC Threads", ParallelGCThreads,
/* are_GC_task_threads */true,
/* are_ConcurrentGC_threads */false);
if (_workers == NULL) {
vm_exit_during_initialization("Failed necessary allocation.");
}
}
}
bool SharedHeap::heap_lock_held_for_gc() {
Thread* t = Thread::current();
return Heap_lock->owned_by_self()
|| ( (t->is_GC_task_thread() || t->is_VM_thread())
&& _thread_holds_heap_lock_for_gc);
}
void SharedHeap::set_par_threads(int t) {
_n_par_threads = t;
@ -280,10 +289,11 @@ void SharedHeap::fill_region_with_object(MemRegion mr) {
}
// Some utilities.
void SharedHeap::print_size_transition(size_t bytes_before,
void SharedHeap::print_size_transition(outputStream* out,
size_t bytes_before,
size_t bytes_after,
size_t capacity) {
tty->print(" %d%s->%d%s(%d%s)",
out->print(" %d%s->%d%s(%d%s)",
byte_size_in_proper_unit(bytes_before),
proper_unit_for_byte_size(bytes_before),
byte_size_in_proper_unit(bytes_after),