1 /* src/native/vm/gnuclasspath/java_lang_VMRuntime.cpp
3 Copyright (C) 1996-2005, 2006, 2007, 2008
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
33 #include <sys/utsname.h>
35 #if defined(__DARWIN__)
36 # if defined(__POWERPC__)
37 # define OS_INLINE /* required for <libkern/ppc/OSByteOrder.h> */
39 # include <mach/mach.h>
42 #include "mm/dumpmemory.h"
45 #include "native/jni.h"
46 #include "native/native.h"
48 #if defined(ENABLE_JNI_HEADERS)
49 # include "native/vm/include/java_lang_VMRuntime.h"
52 #include "vm/builtin.h"
53 #include "vm/exceptions.hpp"
54 #include "vm/string.hpp"
57 #include "vmcore/os.hpp"
58 #include "vmcore/utf8.h"
61 static bool finalizeOnExit = false;
64 // Native functions are exported as C functions.
68 * Class: java/lang/VMRuntime
72 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_exit(JNIEnv *env, jclass clazz, jint status)
82 * Class: java/lang/VMRuntime
86 JNIEXPORT jlong JNICALL Java_java_lang_VMRuntime_freeMemory(JNIEnv *env, jclass clazz)
88 return gc_get_free_bytes();
93 * Class: java/lang/VMRuntime
97 JNIEXPORT jlong JNICALL Java_java_lang_VMRuntime_totalMemory(JNIEnv *env, jclass clazz)
99 return gc_get_heap_size();
104 * Class: java/lang/VMRuntime
108 JNIEXPORT jlong JNICALL Java_java_lang_VMRuntime_maxMemory(JNIEnv *env, jclass clazz)
110 return gc_get_max_heap_size();
115 * Class: java/lang/VMRuntime
119 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_gc(JNIEnv *env, jclass clazz)
126 * Class: java/lang/VMRuntime
127 * Method: runFinalization
130 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_runFinalization(JNIEnv *env, jclass clazz)
132 gc_invoke_finalizers();
137 * Class: java/lang/VMRuntime
138 * Method: runFinalizersOnExit
141 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_runFinalizersOnExit(JNIEnv *env, jclass clazz, jboolean value)
145 finalizeOnExit = value;
150 * Class: java/lang/VMRuntime
151 * Method: runFinalizationsForExit
154 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_runFinalizationForExit(JNIEnv *env, jclass clazz)
156 /* if (finalizeOnExit) { */
158 /* gc_finalize_all(); */
160 /* log_text("Java_java_lang_VMRuntime_runFinalizationForExit called"); */
161 /*gc_finalize_all();*/
162 /*gc_invoke_finalizers();*/
168 * Class: java/lang/VMRuntime
169 * Method: traceInstructions
172 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_traceInstructions(JNIEnv *env, jclass clazz, jboolean par1)
179 * Class: java/lang/VMRuntime
180 * Method: traceMethodCalls
183 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_traceMethodCalls(JNIEnv *env, jclass clazz, jboolean par1)
190 * Class: java/lang/VMRuntime
191 * Method: availableProcessors
194 JNIEXPORT jint JNICALL Java_java_lang_VMRuntime_availableProcessors(JNIEnv *env, jclass clazz)
196 return os::processors_online();
201 * Class: java/lang/VMRuntime
203 * Signature: (Ljava/lang/String;Ljava/lang/ClassLoader;)I
205 JNIEXPORT jint JNICALL Java_java_lang_VMRuntime_nativeLoad(JNIEnv *env, jclass clazz, jstring libname, jobject loader)
210 cl = loader_hashtable_classloader_add((java_handle_t *) loader);
212 /* REMOVEME When we use Java-strings internally. */
214 if (libname == NULL) {
215 exceptions_throw_nullpointerexception();
219 name = javastring_toutf((java_handle_t *) libname, false);
221 return native_library_load(env, name, cl);
226 * Class: java/lang/VMRuntime
227 * Method: mapLibraryName
228 * Signature: (Ljava/lang/String;)Ljava/lang/String;
230 JNIEXPORT jstring JNICALL Java_java_lang_VMRuntime_mapLibraryName(JNIEnv *env, jclass clazz, jstring libname)
238 if (libname == NULL) {
239 exceptions_throw_nullpointerexception();
243 u = javastring_toutf((java_handle_t *) libname, false);
245 /* calculate length of library name */
248 strlen(NATIVE_LIBRARY_PREFIX) +
250 strlen(NATIVE_LIBRARY_SUFFIX) +
255 buffer = DMNEW(char, buffer_len);
257 /* generate library name */
259 strcpy(buffer, NATIVE_LIBRARY_PREFIX);
261 strcat(buffer, NATIVE_LIBRARY_SUFFIX);
263 o = javastring_new_from_utf_string(buffer);
275 /* native methods implemented by this file ************************************/
277 static JNINativeMethod methods[] = {
278 { (char*) "exit", (char*) "(I)V", (void*) (uintptr_t) &Java_java_lang_VMRuntime_exit },
279 { (char*) "freeMemory", (char*) "()J", (void*) (uintptr_t) &Java_java_lang_VMRuntime_freeMemory },
280 { (char*) "totalMemory", (char*) "()J", (void*) (uintptr_t) &Java_java_lang_VMRuntime_totalMemory },
281 { (char*) "maxMemory", (char*) "()J", (void*) (uintptr_t) &Java_java_lang_VMRuntime_maxMemory },
282 { (char*) "gc", (char*) "()V", (void*) (uintptr_t) &Java_java_lang_VMRuntime_gc },
283 { (char*) "runFinalization", (char*) "()V", (void*) (uintptr_t) &Java_java_lang_VMRuntime_runFinalization },
284 { (char*) "runFinalizersOnExit", (char*) "(Z)V", (void*) (uintptr_t) &Java_java_lang_VMRuntime_runFinalizersOnExit },
285 { (char*) "runFinalizationForExit", (char*) "()V", (void*) (uintptr_t) &Java_java_lang_VMRuntime_runFinalizationForExit },
286 { (char*) "traceInstructions", (char*) "(Z)V", (void*) (uintptr_t) &Java_java_lang_VMRuntime_traceInstructions },
287 { (char*) "traceMethodCalls", (char*) "(Z)V", (void*) (uintptr_t) &Java_java_lang_VMRuntime_traceMethodCalls },
288 { (char*) "availableProcessors", (char*) "()I", (void*) (uintptr_t) &Java_java_lang_VMRuntime_availableProcessors },
289 { (char*) "nativeLoad", (char*) "(Ljava/lang/String;Ljava/lang/ClassLoader;)I", (void*) (uintptr_t) &Java_java_lang_VMRuntime_nativeLoad },
290 { (char*) "mapLibraryName", (char*) "(Ljava/lang/String;)Ljava/lang/String;", (void*) (uintptr_t) &Java_java_lang_VMRuntime_mapLibraryName },
294 /* _Jv_java_lang_VMRuntime_init ************************************************
296 Register native functions.
298 *******************************************************************************/
302 void _Jv_java_lang_VMRuntime_init(void)
306 u = utf_new_char("java/lang/VMRuntime");
308 native_method_register(u, methods, NATIVE_METHODS_COUNT);
314 * These are local overrides for various environment variables in Emacs.
315 * Please do not remove this and leave it at the end of the file, where
316 * Emacs will automagically detect them.
317 * ---------------------------------------------------------------------
320 * indent-tabs-mode: t
324 * vim:noexpandtab:sw=4:ts=4: