17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_GC_SHARED_THREADLOCALALLOCBUFFER_INLINE_HPP
26 #define SHARE_VM_GC_SHARED_THREADLOCALALLOCBUFFER_INLINE_HPP
27
28 #include "gc/shared/collectedHeap.hpp"
29 #include "gc/shared/threadLocalAllocBuffer.hpp"
30 #include "logging/log.hpp"
31 #include "runtime/thread.hpp"
32 #include "utilities/copy.hpp"
33
34 inline HeapWord* ThreadLocalAllocBuffer::allocate(size_t size) {
35 invariants();
36 HeapWord* obj = top();
37 if (pointer_delta(end(), obj) >= size) {
38 // successful thread-local allocation
39 #ifdef ASSERT
40 // Skip mangling the space corresponding to the object header to
41 // ensure that the returned space is not considered parsable by
42 // any concurrent GC thread.
43 size_t hdr_size = oopDesc::header_size();
44 Copy::fill_to_words(obj + hdr_size, size - hdr_size, badHeapWordVal);
45 #endif // ASSERT
46 // This addition is safe because we know that top is
47 // at least size below end, so the add can't wrap.
48 set_top(obj + size);
49
50 invariants();
51 return obj;
52 }
53 return NULL;
54 }
55
56 inline size_t ThreadLocalAllocBuffer::compute_size(size_t obj_size) {
57 const size_t aligned_obj_size = align_object_size(obj_size);
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_GC_SHARED_THREADLOCALALLOCBUFFER_INLINE_HPP
26 #define SHARE_VM_GC_SHARED_THREADLOCALALLOCBUFFER_INLINE_HPP
27
28 #include "gc/shared/collectedHeap.hpp"
29 #include "gc/shared/threadLocalAllocBuffer.hpp"
30 #include "logging/log.hpp"
31 #include "runtime/thread.hpp"
32 #include "utilities/copy.hpp"
33
34 inline HeapWord* ThreadLocalAllocBuffer::allocate(size_t size) {
35 invariants();
36 HeapWord* obj = top();
37 if (pointer_delta(current_end(), obj) >= size) {
38 // successful thread-local allocation
39 #ifdef ASSERT
40 // Skip mangling the space corresponding to the object header to
41 // ensure that the returned space is not considered parsable by
42 // any concurrent GC thread.
43 size_t hdr_size = oopDesc::header_size();
44 Copy::fill_to_words(obj + hdr_size, size - hdr_size, badHeapWordVal);
45 #endif // ASSERT
46 // This addition is safe because we know that top is
47 // at least size below end, so the add can't wrap.
48 set_top(obj + size);
49
50 invariants();
51 return obj;
52 }
53 return NULL;
54 }
55
56 inline size_t ThreadLocalAllocBuffer::compute_size(size_t obj_size) {
57 const size_t aligned_obj_size = align_object_size(obj_size);
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