Mercurial > hg > truffle
diff src/share/vm/gc_implementation/shared/mutableSpace.cpp @ 269:850fdf70db2b
Merge
author | jmasa |
---|---|
date | Mon, 28 Jul 2008 15:30:23 -0700 |
parents | d1605aabd0a1 12eea04c8b06 |
children | 4e400c36026f |
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--- a/src/share/vm/gc_implementation/shared/mutableSpace.cpp Fri Jul 25 11:29:03 2008 -0700 +++ b/src/share/vm/gc_implementation/shared/mutableSpace.cpp Mon Jul 28 15:30:23 2008 -0700 @@ -25,7 +25,17 @@ # include "incls/_precompiled.incl" # include "incls/_mutableSpace.cpp.incl" -void MutableSpace::initialize(MemRegion mr, bool clear_space) { +MutableSpace::MutableSpace(): ImmutableSpace(), _top(NULL) { + _mangler = new MutableSpaceMangler(this); +} + +MutableSpace::~MutableSpace() { + delete _mangler; +} + +void MutableSpace::initialize(MemRegion mr, + bool clear_space, + bool mangle_space) { HeapWord* bottom = mr.start(); HeapWord* end = mr.end(); @@ -34,14 +44,51 @@ set_bottom(bottom); set_end(end); - if (clear_space) clear(); + if (clear_space) { + clear(mangle_space); + } +} + +void MutableSpace::clear(bool mangle_space) { + set_top(bottom()); + if (ZapUnusedHeapArea && mangle_space) { + mangle_unused_area(); + } +} + +#ifndef PRODUCT +void MutableSpace::check_mangled_unused_area(HeapWord* limit) { + mangler()->check_mangled_unused_area(limit); +} + +void MutableSpace::check_mangled_unused_area_complete() { + mangler()->check_mangled_unused_area_complete(); } -void MutableSpace::clear() { - set_top(bottom()); - if (ZapUnusedHeapArea) mangle_unused_area(); +// Mangle only the unused space that has not previously +// been mangled and that has not been allocated since being +// mangled. +void MutableSpace::mangle_unused_area() { + mangler()->mangle_unused_area(); +} + +void MutableSpace::mangle_unused_area_complete() { + mangler()->mangle_unused_area_complete(); } +void MutableSpace::mangle_region(MemRegion mr) { + SpaceMangler::mangle_region(mr); +} + +void MutableSpace::set_top_for_allocations(HeapWord* v) { + mangler()->set_top_for_allocations(v); +} + +void MutableSpace::set_top_for_allocations() { + mangler()->set_top_for_allocations(top()); +} +#endif + // This version requires locking. */ HeapWord* MutableSpace::allocate(size_t size) { assert(Heap_lock->owned_by_self() ||