erik_version roman_version
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_VM_SERVICES_MEMORYMANAGER_HPP
25 #define SHARE_VM_SERVICES_MEMORYMANAGER_HPP
26
27 #include "gc/shared/gcCause.hpp"
28 #include "memory/allocation.hpp"
29 #include "oops/oopsHierarchy.hpp"
30 #include "runtime/handles.hpp"
31 #include "runtime/timer.hpp"
32 #include "services/memoryUsage.hpp"
33
34 // A memory manager is responsible for managing one or more memory pools.
35 // The garbage collector is one type of memory managers responsible
36 // for reclaiming memory occupied by unreachable objects. A Java virtual
37 // machine may have one or more memory managers. It may
38 // add or remove memory managers during execution.
39 // A memory pool can be managed by more than one memory managers.
40
41 class MemoryPool;
42 class GCMemoryManager;
43 class OopClosure;
44
45 class MemoryManager : public CHeapObj<mtInternal> {
46 private:
47 enum {
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9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_VM_SERVICES_MEMORYMANAGER_HPP
25 #define SHARE_VM_SERVICES_MEMORYMANAGER_HPP
26
27 #include "gc/shared/gcCause.hpp"
28 #include "memory/allocation.hpp"
29 #include "oops/oop.hpp"
30 #include "oops/oopsHierarchy.hpp"
31 #include "runtime/handles.hpp"
32 #include "runtime/timer.hpp"
33 #include "services/memoryUsage.hpp"
34
35 // A memory manager is responsible for managing one or more memory pools.
36 // The garbage collector is one type of memory managers responsible
37 // for reclaiming memory occupied by unreachable objects. A Java virtual
38 // machine may have one or more memory managers. It may
39 // add or remove memory managers during execution.
40 // A memory pool can be managed by more than one memory managers.
41
42 class MemoryPool;
43 class GCMemoryManager;
44 class OopClosure;
45
46 class MemoryManager : public CHeapObj<mtInternal> {
47 private:
48 enum {
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50
51 MemoryPool* _pools[max_num_pools];
52 int _num_pools;
53
54 const char* _name;
55
56 protected:
57 volatile instanceOop _memory_mgr_obj;
58
59 public:
60 MemoryManager(const char* name);
61
62 int num_memory_pools() const { return _num_pools; }
63 MemoryPool* get_memory_pool(int index) {
64 assert(index >= 0 && index < _num_pools, "Invalid index");
65 return _pools[index];
66 }
67
68 void add_pool(MemoryPool* pool);
69
70 bool is_manager(instanceHandle mh) { return mh() == _memory_mgr_obj; }
71
72 virtual instanceOop get_memory_manager_instance(TRAPS);
73 virtual bool is_gc_memory_manager() { return false; }
74
75 const char* name() const { return _name; }
76
77 // GC support
78 void oops_do(OopClosure* f);
79
80 // Static factory methods to get a memory manager of a specific type
81 static MemoryManager* get_code_cache_memory_manager();
82 static MemoryManager* get_metaspace_memory_manager();
83 };
84
85 class GCStatInfo : public ResourceObj {
86 private:
87 size_t _index;
88 jlong _start_time;
89 jlong _end_time;
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51
52 MemoryPool* _pools[max_num_pools];
53 int _num_pools;
54
55 const char* _name;
56
57 protected:
58 volatile instanceOop _memory_mgr_obj;
59
60 public:
61 MemoryManager(const char* name);
62
63 int num_memory_pools() const { return _num_pools; }
64 MemoryPool* get_memory_pool(int index) {
65 assert(index >= 0 && index < _num_pools, "Invalid index");
66 return _pools[index];
67 }
68
69 void add_pool(MemoryPool* pool);
70
71 bool is_manager(instanceHandle mh) { return oopDesc::equals(mh(), _memory_mgr_obj); }
72
73 virtual instanceOop get_memory_manager_instance(TRAPS);
74 virtual bool is_gc_memory_manager() { return false; }
75
76 const char* name() const { return _name; }
77
78 // GC support
79 void oops_do(OopClosure* f);
80
81 // Static factory methods to get a memory manager of a specific type
82 static MemoryManager* get_code_cache_memory_manager();
83 static MemoryManager* get_metaspace_memory_manager();
84 };
85
86 class GCStatInfo : public ResourceObj {
87 private:
88 size_t _index;
89 jlong _start_time;
90 jlong _end_time;
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