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Tom Rodriguez 2010-08-09 17:51:56 -07:00
commit 68ff9b2b00
31 changed files with 245 additions and 124 deletions
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30
hotspot/src/share/vm/memory/allocation.hpp
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@ -317,32 +317,36 @@ extern void resource_free_bytes( char *old, size_t size );
// use delete to deallocate.
class ResourceObj ALLOCATION_SUPER_CLASS_SPEC {
public:
enum allocation_type { UNKNOWN = 0, C_HEAP, RESOURCE_AREA, ARENA };
enum allocation_type { STACK_OR_EMBEDDED = 0, RESOURCE_AREA, C_HEAP, ARENA, allocation_mask = 0x3 };
static void set_allocation_type(address res, allocation_type type) NOT_DEBUG_RETURN;
#ifdef ASSERT
private:
allocation_type _allocation;
// When this object is allocated on stack the new() operator is not
// called but garbage on stack may look like a valid allocation_type.
// Store negated 'this' pointer when new() is called to distinguish cases.
uintptr_t _allocation;
public:
bool allocated_on_C_heap() { return _allocation == C_HEAP; }
allocation_type get_allocation_type() const;
bool allocated_on_stack() const { return get_allocation_type() == STACK_OR_EMBEDDED; }
bool allocated_on_res_area() const { return get_allocation_type() == RESOURCE_AREA; }
bool allocated_on_C_heap() const { return get_allocation_type() == C_HEAP; }
bool allocated_on_arena() const { return get_allocation_type() == ARENA; }
ResourceObj(); // default construtor
ResourceObj(const ResourceObj& r); // default copy construtor
ResourceObj& operator=(const ResourceObj& r); // default copy assignment
~ResourceObj();
#endif // ASSERT
public:
void* operator new(size_t size, allocation_type type);
void* operator new(size_t size, Arena *arena) {
address res = (address)arena->Amalloc(size);
// Set allocation type in the resource object
DEBUG_ONLY(((ResourceObj *)res)->_allocation = ARENA;)
DEBUG_ONLY(set_allocation_type(res, ARENA);)
return res;
}
void* operator new(size_t size) {
address res = (address)resource_allocate_bytes(size);
// Set allocation type in the resource object
DEBUG_ONLY(((ResourceObj *)res)->_allocation = RESOURCE_AREA;)
return res;
}
void* operator new(size_t size, void* where, allocation_type type) {
void* res = where;
// Set allocation type in the resource object
DEBUG_ONLY(((ResourceObj *)res)->_allocation = type;)
DEBUG_ONLY(set_allocation_type(res, RESOURCE_AREA);)
return res;
}
void operator delete(void* p);