1 /*
2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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).
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 /*
25 * Native support for TestPeriodicCollectionJNI test.
26 */
27
28 #include "jni.h"
29
30 #ifdef WINDOWS
31 #include <windows.h>
32 #else
33 #include <unistd.h>
34 #endif
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
40 static volatile int release_critical = 0;
41
42 JNIEXPORT jboolean JNICALL
Java_gc_g1_TestPeriodicCollectionJNI_blockInNative(JNIEnv * env,jobject obj,jintArray dummy)43 Java_gc_g1_TestPeriodicCollectionJNI_blockInNative(JNIEnv* env, jobject obj, jintArray dummy) {
44 void* native_array = (*env)->GetPrimitiveArrayCritical(env, dummy, 0);
45
46 if (native_array == NULL) {
47 return JNI_FALSE;
48 }
49
50 while (!release_critical) {
51 #ifdef WINDOWS
52 Sleep(1);
53 #else
54 usleep(1000);
55 #endif
56 }
57
58 (*env)->ReleasePrimitiveArrayCritical(env, dummy, native_array, 0);
59
60 return JNI_TRUE;
61 }
62
Java_gc_g1_TestPeriodicCollectionJNI_unblock(JNIEnv * env,jobject obj)63 JNIEXPORT void JNICALL Java_gc_g1_TestPeriodicCollectionJNI_unblock(JNIEnv *env, jobject obj)
64 {
65 release_critical = 1;
66 }
67
68 #ifdef __cplusplus
69 }
70 #endif
71