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 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 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