-
Notifications
You must be signed in to change notification settings - Fork 748
/
Copy pathFastJNI_java_lang_Object.cpp
177 lines (161 loc) · 7.41 KB
/
FastJNI_java_lang_Object.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
/*******************************************************************************
* Copyright IBM Corp. and others 2001
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] https://openjdk.org/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
*******************************************************************************/
#include "fastJNI.h"
#include "j9consts.h"
#include "j9protos.h"
#include "ObjectMonitor.hpp"
#include "ut_j9vm.h"
#include "VMHelpers.hpp"
#if defined(J9VM_OPT_CRIU_SUPPORT)
#include "CRIUHelpers.hpp"
#endif /* defined(J9VM_OPT_CRIU_SUPPORT) */
extern "C" {
/* java.lang.Object: public final native void waitImpl(long millis, int nanos) throws InterruptedException; */
void JNICALL
Fast_java_lang_Object_wait(J9VMThread *currentThread, j9object_t receiverObject, jlong millis, jint nanos)
{
if (0 == monitorWaitImpl(currentThread, receiverObject, (I_64)millis, (I_32)nanos, TRUE)) {
/* No need to check return value here - pop frames cannot occur as this method is native */
VM_VMHelpers::checkAsyncMessages(currentThread);
}
}
/* java.lang.Object: public final native void notifyAll(); */
void JNICALL
Fast_java_lang_Object_notifyAll(J9VMThread *currentThread, j9object_t receiverObject)
{
#if defined(J9VM_OPT_CRIU_SUPPORT)
if (VM_CRIUHelpers::isJVMInSingleThreadMode(currentThread->javaVM)) {
/* The exception is already set if the operation failed. */
VM_CRIUHelpers::delayedLockingOperation(currentThread, receiverObject, J9_SINGLE_THREAD_MODE_OP_NOTIFY_ALL);
} else
#endif /* defined(J9VM_OPT_CRIU_SUPPORT) */
{
omrthread_monitor_t monitorPtr = NULL;
if (VM_ObjectMonitor::getMonitorForNotify(currentThread, receiverObject, &monitorPtr, true)) {
#if JAVA_SPEC_VERSION >= 24
J9JavaVM *vm = currentThread->javaVM;
if (J9_ARE_ANY_BITS_SET(vm->extendedRuntimeFlags3, J9_EXTENDED_RUNTIME3_YIELD_PINNED_CONTINUATION)) {
j9objectmonitor_t lock = 0;
j9objectmonitor_t *lockEA = NULL;
J9ObjectMonitor *objectMonitor = NULL;
if (!LN_HAS_LOCKWORD(currentThread, receiverObject)) {
objectMonitor = monitorTablePeek(vm, receiverObject);
} else {
lockEA = J9OBJECT_MONITOR_EA(currentThread, receiverObject);
lock = J9_LOAD_LOCKWORD(currentThread, lockEA);
if (J9_LOCK_IS_INFLATED(lock)) {
objectMonitor = J9_INFLLOCK_OBJECT_MONITOR(lock);
}
}
if ((NULL != objectMonitor) && (NULL != objectMonitor->waitingContinuations)) {
omrthread_monitor_enter(vm->blockedVirtualThreadsMutex);
J9VMContinuation *head = objectMonitor->waitingContinuations;
if (NULL != head) {
J9VMContinuation *next = head;
J9VMJAVALANGVIRTUALTHREAD_SET_ONWAITINGLIST(currentThread, head->vthread, JNI_TRUE);
J9VMJAVALANGVIRTUALTHREAD_SET_NOTIFIED(currentThread, head->vthread, JNI_TRUE);
while (NULL != next->nextWaitingContinuation) {
J9VMJAVALANGVIRTUALTHREAD_SET_ONWAITINGLIST(currentThread, next->vthread, JNI_TRUE);
J9VMJAVALANGVIRTUALTHREAD_SET_NOTIFIED(currentThread, next->vthread, JNI_TRUE);
next = next->nextWaitingContinuation;
}
next->nextWaitingContinuation = vm->blockedContinuations;
vm->blockedContinuations = head;
objectMonitor->waitingContinuations = NULL;
omrthread_monitor_notify(vm->blockedVirtualThreadsMutex);
omrthread_monitor_exit(vm->blockedVirtualThreadsMutex);
} else {
omrthread_monitor_exit(vm->blockedVirtualThreadsMutex);
}
}
}
#endif /* JAVA_SPEC_VERSION >= 24 */
if (0 != omrthread_monitor_notify_all(monitorPtr)) {
setCurrentException(currentThread, J9VMCONSTANTPOOL_JAVALANGILLEGALMONITORSTATEEXCEPTION, NULL);
}
} else if (NULL != monitorPtr) {
setCurrentException(currentThread, J9VMCONSTANTPOOL_JAVALANGILLEGALMONITORSTATEEXCEPTION, NULL);
}
}
}
/* java.lang.Object: public final native void notify(); */
void JNICALL
Fast_java_lang_Object_notify(J9VMThread *currentThread, j9object_t receiverObject)
{
#if defined(J9VM_OPT_CRIU_SUPPORT)
if (VM_CRIUHelpers::isJVMInSingleThreadMode(currentThread->javaVM)) {
/* The exception is already set if the operation failed. */
VM_CRIUHelpers::delayedLockingOperation(currentThread, receiverObject, J9_SINGLE_THREAD_MODE_OP_NOTIFY);
} else
#endif /* defined(J9VM_OPT_CRIU_SUPPORT) */
{
omrthread_monitor_t monitorPtr = NULL;
if (VM_ObjectMonitor::getMonitorForNotify(currentThread, receiverObject, &monitorPtr, true)) {
#if JAVA_SPEC_VERSION >= 24
J9JavaVM *vm = currentThread->javaVM;
if (J9_ARE_ANY_BITS_SET(vm->extendedRuntimeFlags3, J9_EXTENDED_RUNTIME3_YIELD_PINNED_CONTINUATION)) {
j9objectmonitor_t lock = 0;
j9objectmonitor_t *lockEA = NULL;
J9ObjectMonitor *objectMonitor = NULL;
if (!LN_HAS_LOCKWORD(currentThread, receiverObject)) {
objectMonitor = monitorTablePeek(vm, receiverObject);
} else {
lockEA = J9OBJECT_MONITOR_EA(currentThread, receiverObject);
lock = J9_LOAD_LOCKWORD(currentThread, lockEA);
if (J9_LOCK_IS_INFLATED(lock)) {
objectMonitor = J9_INFLLOCK_OBJECT_MONITOR(lock);
}
}
if ((NULL != objectMonitor) && (NULL != objectMonitor->waitingContinuations)) {
omrthread_monitor_enter(vm->blockedVirtualThreadsMutex);
J9VMContinuation *head = objectMonitor->waitingContinuations;
if (NULL != head) {
objectMonitor->waitingContinuations = head->nextWaitingContinuation;
head->nextWaitingContinuation = vm->blockedContinuations;
vm->blockedContinuations = head;
J9VMJAVALANGVIRTUALTHREAD_SET_ONWAITINGLIST(currentThread, head->vthread, JNI_TRUE);
J9VMJAVALANGVIRTUALTHREAD_SET_NOTIFIED(currentThread, head->vthread, JNI_TRUE);
omrthread_monitor_notify(vm->blockedVirtualThreadsMutex);
omrthread_monitor_exit(vm->blockedVirtualThreadsMutex);
} else {
omrthread_monitor_exit(vm->blockedVirtualThreadsMutex);
}
}
}
#endif /* JAVA_SPEC_VERSION >= 24 */
if (0 != omrthread_monitor_notify(monitorPtr)) {
setCurrentException(currentThread, J9VMCONSTANTPOOL_JAVALANGILLEGALMONITORSTATEEXCEPTION, NULL);
}
} else if (NULL != monitorPtr) {
setCurrentException(currentThread, J9VMCONSTANTPOOL_JAVALANGILLEGALMONITORSTATEEXCEPTION, NULL);
}
}
}
J9_FAST_JNI_METHOD_TABLE(java_lang_Object)
J9_FAST_JNI_METHOD("waitImpl", "(JI)V", Fast_java_lang_Object_wait,
J9_FAST_JNI_RETAIN_VM_ACCESS | J9_FAST_JNI_DO_NOT_WRAP_OBJECTS)
J9_FAST_JNI_METHOD("notifyAll", "()V", Fast_java_lang_Object_notifyAll,
J9_FAST_JNI_RETAIN_VM_ACCESS | J9_FAST_JNI_DO_NOT_WRAP_OBJECTS)
J9_FAST_JNI_METHOD("notify", "()V", Fast_java_lang_Object_notify,
J9_FAST_JNI_RETAIN_VM_ACCESS | J9_FAST_JNI_DO_NOT_WRAP_OBJECTS)
J9_FAST_JNI_METHOD_TABLE_END
}