1 /* 2 * Copyright (c) 1994, 2000, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /* 27 * Link foreign methods. This first half of this file contains the 28 * machine independent dynamic linking routines. 29 * See "BUILD_PLATFORM"/java/lang/linker_md.c to see 30 * the implementation of this shared dynamic linking 31 * interface. 32 * 33 * NOTE - source in this file is POSIX.1 compliant, host 34 * specific code lives in the platform specific 35 * code tree. 36 */ 37 38 #include "jni.h" 39 #include "jni_util.h" 40 #include "jvm.h" 41 42 #include "java_lang_Runtime.h" 43 44 JNIEXPORT jlong JNICALL 45 Java_java_lang_Runtime_freeMemory(JNIEnv *env, jobject this) 46 { 47 return JVM_FreeMemory(); 48 } 49 50 JNIEXPORT jlong JNICALL 51 Java_java_lang_Runtime_totalMemory(JNIEnv *env, jobject this) 52 { 53 return JVM_TotalMemory(); 54 } 55 56 JNIEXPORT jlong JNICALL 57 Java_java_lang_Runtime_maxMemory(JNIEnv *env, jobject this) 58 { 59 return JVM_MaxMemory(); 60 } 61 62 JNIEXPORT void JNICALL 63 Java_java_lang_Runtime_gc(JNIEnv *env, jobject this) 64 { 65 JVM_GC(); 66 } 67 68 JNIEXPORT void JNICALL 69 Java_java_lang_Runtime_traceInstructions(JNIEnv *env, jobject this, jboolean on) 70 { 71 JVM_TraceInstructions(on); 72 } 73 74 JNIEXPORT void JNICALL 75 Java_java_lang_Runtime_traceMethodCalls(JNIEnv *env, jobject this, jboolean on) 76 { 77 JVM_TraceMethodCalls(on); 78 } 79 80 JNIEXPORT void JNICALL 81 Java_java_lang_Runtime_runFinalization0(JNIEnv *env, jobject this) 82 { 83 jclass cl; 84 jmethodID mid; 85 86 if ((cl = (*env)->FindClass(env, "java/lang/ref/Finalizer")) 87 && (mid = (*env)->GetStaticMethodID(env, cl, 88 "runFinalization", "()V"))) { 89 (*env)->CallStaticVoidMethod(env, cl, mid); 90 } 91 } 92 93 JNIEXPORT jint JNICALL 94 Java_java_lang_Runtime_availableProcessors(JNIEnv *env, jobject this) 95 { 96 return JVM_ActiveProcessorCount(); 97 }