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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes

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Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv

Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
This commit is contained in:
Coleen Phillimore 2008-04-13 17:43:42 -04:00
parent 680ecf1611
commit 4a831d45f0
273 changed files with 6585 additions and 2993 deletions
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13
hotspot/src/share/vm/gc_interface/collectedHeap.inline.hpp
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@ -61,7 +61,10 @@ void CollectedHeap::post_allocation_install_obj_klass(KlassHandle klass,
obj->set_klass(klass());
assert(!Universe::is_fully_initialized() || obj->blueprint() != NULL,
"missing blueprint");
}
// Support for jvmti and dtrace
inline void post_allocation_notify(KlassHandle klass, oop obj) {
// support for JVMTI VMObjectAlloc event (no-op if not enabled)
JvmtiExport::vm_object_alloc_event_collector(obj);
@ -79,18 +82,22 @@ void CollectedHeap::post_allocation_setup_obj(KlassHandle klass,
post_allocation_setup_common(klass, obj, size);
assert(Universe::is_bootstrapping() ||
!((oop)obj)->blueprint()->oop_is_array(), "must not be an array");
// notify jvmti and dtrace
post_allocation_notify(klass, (oop)obj);
}
void CollectedHeap::post_allocation_setup_array(KlassHandle klass,
HeapWord* obj,
size_t size,
int length) {
// Set array length before posting jvmti object alloc event
// in post_allocation_setup_common()
assert(length >= 0, "length should be non-negative");
((arrayOop)obj)->set_length(length);
post_allocation_setup_common(klass, obj, size);
// Must set length after installing klass as set_klass zeros the length
// field in UseCompressedOops
((arrayOop)obj)->set_length(length);
assert(((oop)obj)->blueprint()->oop_is_array(), "must be an array");
// notify jvmti and dtrace (must be after length is set for dtrace)
post_allocation_notify(klass, (oop)obj);
}
HeapWord* CollectedHeap::common_mem_allocate_noinit(size_t size, bool is_noref, TRAPS) {