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 "JNIHelp.h"
43
44 #define NATIVE_METHOD(className, functionName, signature) \
45 { #functionName, signature, (void*)(className ## _ ## functionName) }
46
47 JNIEXPORT jlong JNICALL
Runtime_freeMemory(JNIEnv * env,jobject this)48 Runtime_freeMemory(JNIEnv *env, jobject this)
49 {
50 return JVM_FreeMemory();
51 }
52
53 JNIEXPORT jlong JNICALL
Runtime_totalMemory(JNIEnv * env,jobject this)54 Runtime_totalMemory(JNIEnv *env, jobject this)
55 {
56 return JVM_TotalMemory();
57 }
58
59 JNIEXPORT jlong JNICALL
Runtime_maxMemory(JNIEnv * env,jobject this)60 Runtime_maxMemory(JNIEnv *env, jobject this)
61 {
62 return JVM_MaxMemory();
63 }
64
65 JNIEXPORT void JNICALL
Runtime_gc(JNIEnv * env,jobject this)66 Runtime_gc(JNIEnv *env, jobject this)
67 {
68 JVM_GC();
69 }
70
71 JNIEXPORT void JNICALL
Runtime_nativeExit(JNIEnv * env,jclass this,jint status)72 Runtime_nativeExit(JNIEnv *env, jclass this, jint status)
73 {
74 JVM_Exit(status);
75 }
76
77 JNIEXPORT jstring JNICALL
Runtime_nativeLoad(JNIEnv * env,jclass ignored,jstring javaFilename,jobject javaLoader,jstring javaLibrarySearchPath)78 Runtime_nativeLoad(JNIEnv* env, jclass ignored, jstring javaFilename,
79 jobject javaLoader, jstring javaLibrarySearchPath)
80 {
81 return JVM_NativeLoad(env, javaFilename, javaLoader, javaLibrarySearchPath);
82 }
83
84 static JNINativeMethod gMethods[] = {
85 NATIVE_METHOD(Runtime, freeMemory, "!()J"),
86 NATIVE_METHOD(Runtime, totalMemory, "!()J"),
87 NATIVE_METHOD(Runtime, maxMemory, "!()J"),
88 NATIVE_METHOD(Runtime, gc, "()V"),
89 NATIVE_METHOD(Runtime, nativeExit, "(I)V"),
90 NATIVE_METHOD(Runtime, nativeLoad,
91 "(Ljava/lang/String;Ljava/lang/ClassLoader;Ljava/lang/String;)"
92 "Ljava/lang/String;"),
93 };
94
register_java_lang_Runtime(JNIEnv * env)95 void register_java_lang_Runtime(JNIEnv* env) {
96 jniRegisterNativeMethods(env, "java/lang/Runtime", gMethods, NELEM(gMethods));
97 }
98