14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
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 #include "precompiled.hpp"
25 #include "gc/shared/gcHeapSummary.hpp"
26 #include "gc/shared/suspendibleThreadSet.hpp"
27 #include "gc/z/zCollectedHeap.hpp"
28 #include "gc/z/zGlobals.hpp"
29 #include "gc/z/zHeap.inline.hpp"
30 #include "gc/z/zNMethod.hpp"
31 #include "gc/z/zServiceability.hpp"
32 #include "gc/z/zStat.hpp"
33 #include "gc/z/zUtils.inline.hpp"
34 #include "memory/universe.hpp"
35 #include "runtime/mutexLocker.hpp"
36
37 ZCollectedHeap* ZCollectedHeap::heap() {
38 CollectedHeap* heap = Universe::heap();
39 assert(heap != NULL, "Uninitialized access to ZCollectedHeap::heap()");
40 assert(heap->kind() == CollectedHeap::Z, "Invalid name");
41 return (ZCollectedHeap*)heap;
42 }
43
44 ZCollectedHeap::ZCollectedHeap() :
45 _soft_ref_policy(),
46 _barrier_set(),
47 _initialize(&_barrier_set),
48 _heap(),
49 _director(new ZDirector()),
50 _driver(new ZDriver()),
51 _uncommitter(new ZUncommitter()),
52 _stat(new ZStat()),
53 _runtime_workers() {}
117 }
118
119 HeapWord* ZCollectedHeap::allocate_new_tlab(size_t min_size, size_t requested_size, size_t* actual_size) {
120 const size_t size_in_bytes = ZUtils::words_to_bytes(align_object_size(requested_size));
121 const uintptr_t addr = _heap.alloc_tlab(size_in_bytes);
122
123 if (addr != 0) {
124 *actual_size = requested_size;
125 }
126
127 return (HeapWord*)addr;
128 }
129
130 HeapWord* ZCollectedHeap::mem_allocate(size_t size, bool* gc_overhead_limit_was_exceeded) {
131 const size_t size_in_bytes = ZUtils::words_to_bytes(align_object_size(size));
132 return (HeapWord*)_heap.alloc_object(size_in_bytes);
133 }
134
135 MetaWord* ZCollectedHeap::satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
136 size_t size,
137 Metaspace::MetadataType mdtype) {
138 MetaWord* result;
139
140 // Start asynchronous GC
141 collect(GCCause::_metadata_GC_threshold);
142
143 // Expand and retry allocation
144 result = loader_data->metaspace_non_null()->expand_and_allocate(size, mdtype);
145 if (result != NULL) {
146 return result;
147 }
148
149 // Start synchronous GC
150 collect(GCCause::_metadata_GC_clear_soft_refs);
151
152 // Retry allocation
153 result = loader_data->metaspace_non_null()->allocate(size, mdtype);
154 if (result != NULL) {
155 return result;
156 }
157
|
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
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 #include "precompiled.hpp"
25 #include "gc/shared/gcHeapSummary.hpp"
26 #include "gc/shared/suspendibleThreadSet.hpp"
27 #include "gc/z/zCollectedHeap.hpp"
28 #include "gc/z/zGlobals.hpp"
29 #include "gc/z/zHeap.inline.hpp"
30 #include "gc/z/zNMethod.hpp"
31 #include "gc/z/zServiceability.hpp"
32 #include "gc/z/zStat.hpp"
33 #include "gc/z/zUtils.inline.hpp"
34 #include "memory/metaspace/classLoaderMetaspace.hpp"
35 #include "memory/metaspace/metaspaceEnums.hpp"
36 #include "memory/universe.hpp"
37 #include "runtime/mutexLocker.hpp"
38
39 ZCollectedHeap* ZCollectedHeap::heap() {
40 CollectedHeap* heap = Universe::heap();
41 assert(heap != NULL, "Uninitialized access to ZCollectedHeap::heap()");
42 assert(heap->kind() == CollectedHeap::Z, "Invalid name");
43 return (ZCollectedHeap*)heap;
44 }
45
46 ZCollectedHeap::ZCollectedHeap() :
47 _soft_ref_policy(),
48 _barrier_set(),
49 _initialize(&_barrier_set),
50 _heap(),
51 _director(new ZDirector()),
52 _driver(new ZDriver()),
53 _uncommitter(new ZUncommitter()),
54 _stat(new ZStat()),
55 _runtime_workers() {}
119 }
120
121 HeapWord* ZCollectedHeap::allocate_new_tlab(size_t min_size, size_t requested_size, size_t* actual_size) {
122 const size_t size_in_bytes = ZUtils::words_to_bytes(align_object_size(requested_size));
123 const uintptr_t addr = _heap.alloc_tlab(size_in_bytes);
124
125 if (addr != 0) {
126 *actual_size = requested_size;
127 }
128
129 return (HeapWord*)addr;
130 }
131
132 HeapWord* ZCollectedHeap::mem_allocate(size_t size, bool* gc_overhead_limit_was_exceeded) {
133 const size_t size_in_bytes = ZUtils::words_to_bytes(align_object_size(size));
134 return (HeapWord*)_heap.alloc_object(size_in_bytes);
135 }
136
137 MetaWord* ZCollectedHeap::satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
138 size_t size,
139 metaspace::MetadataType mdtype) {
140 MetaWord* result;
141
142 // Start asynchronous GC
143 collect(GCCause::_metadata_GC_threshold);
144
145 // Expand and retry allocation
146 result = loader_data->metaspace_non_null()->expand_and_allocate(size, mdtype);
147 if (result != NULL) {
148 return result;
149 }
150
151 // Start synchronous GC
152 collect(GCCause::_metadata_GC_clear_soft_refs);
153
154 // Retry allocation
155 result = loader_data->metaspace_non_null()->allocate(size, mdtype);
156 if (result != NULL) {
157 return result;
158 }
159
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