Fri, 07 Jan 2011 10:42:32 -0500
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
Summary: Track allocated bytes in Thread's, update on TLAB retirement and direct allocation in Eden and tenured, add JNI methods for ThreadMXBean.
Reviewed-by: coleenp, kvn, dholmes, ysr
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
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15 * You should have received a copy of the GNU General Public License version
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23 */
25 #ifndef SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP
26 #define SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP
28 #ifndef JVMTI_KERNEL
29 #include "runtime/objectMonitor.hpp"
30 #include "utilities/growableArray.hpp"
31 #endif
33 //
34 // class JvmtiRawMonitor
35 //
36 // Used by JVMTI methods: All RawMonitor methods (CreateRawMonitor, EnterRawMonitor, etc.)
37 //
38 // Wrapper for ObjectMonitor class that saves the Monitor's name
39 //
41 class JvmtiRawMonitor : public ObjectMonitor {
42 private:
43 int _magic;
44 char * _name;
45 // JVMTI_RM_MAGIC is set in contructor and unset in destructor.
46 enum { JVMTI_RM_MAGIC = (int)(('T' << 24) | ('I' << 16) | ('R' << 8) | 'M') };
48 int SimpleEnter (Thread * Self) ;
49 int SimpleExit (Thread * Self) ;
50 int SimpleWait (Thread * Self, jlong millis) ;
51 int SimpleNotify (Thread * Self, bool All) ;
53 public:
54 JvmtiRawMonitor(const char *name);
55 ~JvmtiRawMonitor();
56 int raw_enter(TRAPS);
57 int raw_exit(TRAPS);
58 int raw_wait(jlong millis, bool interruptable, TRAPS);
59 int raw_notify(TRAPS);
60 int raw_notifyAll(TRAPS);
61 int magic() { return _magic; }
62 const char *get_name() { return _name; }
63 bool is_valid();
64 };
66 // Onload pending raw monitors
67 // Class is used to cache onload or onstart monitor enter
68 // which will transition into real monitor when
69 // VM is fully initialized.
70 class JvmtiPendingMonitors : public AllStatic {
72 private:
73 static GrowableArray<JvmtiRawMonitor*> *_monitors; // Cache raw monitor enter
75 inline static GrowableArray<JvmtiRawMonitor*>* monitors() { return _monitors; }
77 static void dispose() {
78 delete monitors();
79 }
81 public:
82 static void enter(JvmtiRawMonitor *monitor) {
83 monitors()->append(monitor);
84 }
86 static int count() {
87 return monitors()->length();
88 }
90 static void destroy(JvmtiRawMonitor *monitor) {
91 while (monitors()->contains(monitor)) {
92 monitors()->remove(monitor);
93 }
94 }
96 // Return false if monitor is not found in the list.
97 static bool exit(JvmtiRawMonitor *monitor) {
98 if (monitors()->contains(monitor)) {
99 monitors()->remove(monitor);
100 return true;
101 } else {
102 return false;
103 }
104 }
106 static void transition_raw_monitors();
107 };
109 #endif // SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP