1 /* src/native/vm/gnu/java_lang_VMRuntime.c
3 Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6 J. Wenninger, Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 $Id: java_lang_VMRuntime.c 7910 2007-05-16 08:02:52Z twisti $
35 #include <sys/utsname.h>
37 #if defined(__DARWIN__)
38 # define OS_INLINE /* required for <libkern/ppc/OSByteOrder.h> */
39 # include <mach/mach.h>
44 #include "mm/gc-common.h"
45 #include "mm/memory.h"
47 #include "native/jni.h"
48 #include "native/native.h"
50 #include "native/include/java_io_File.h"
51 #include "native/include/java_lang_ClassLoader.h"
52 #include "native/include/java_lang_String.h"
53 #include "native/include/java_lang_Process.h"
55 #include "native/include/java_lang_VMRuntime.h"
57 #include "native/vm/java_lang_Runtime.h"
59 #include "vm/builtin.h"
60 #include "vm/exceptions.h"
61 #include "vm/stringlocal.h"
65 /* this should work on BSD */
67 #if defined(__DARWIN__)
68 #include <sys/sysctl.h>
73 /* native methods implemented by this file ************************************/
75 static JNINativeMethod methods[] = {
76 { "exit", "(I)V", (void *) (ptrint) &Java_java_lang_VMRuntime_exit },
77 { "freeMemory", "()J", (void *) (ptrint) &Java_java_lang_VMRuntime_freeMemory },
78 { "totalMemory", "()J", (void *) (ptrint) &Java_java_lang_VMRuntime_totalMemory },
79 { "maxMemory", "()J", (void *) (ptrint) &Java_java_lang_VMRuntime_maxMemory },
80 { "gc", "()V", (void *) (ptrint) &Java_java_lang_VMRuntime_gc },
81 { "runFinalization", "()V", (void *) (ptrint) &Java_java_lang_VMRuntime_runFinalization },
82 { "runFinalizersOnExit", "(Z)V", (void *) (ptrint) &Java_java_lang_VMRuntime_runFinalizersOnExit },
83 { "runFinalizationForExit", "()V", (void *) (ptrint) &Java_java_lang_VMRuntime_runFinalizationForExit },
84 { "traceInstructions", "(Z)V", (void *) (ptrint) &Java_java_lang_VMRuntime_traceInstructions },
85 { "traceMethodCalls", "(Z)V", (void *) (ptrint) &Java_java_lang_VMRuntime_traceMethodCalls },
86 { "availableProcessors", "()I", (void *) (ptrint) &Java_java_lang_VMRuntime_availableProcessors },
87 { "nativeLoad", "(Ljava/lang/String;Ljava/lang/ClassLoader;)I", (void *) (ptrint) &Java_java_lang_VMRuntime_nativeLoad },
88 { "mapLibraryName", "(Ljava/lang/String;)Ljava/lang/String;", (void *) (ptrint) &Java_java_lang_VMRuntime_mapLibraryName },
92 /* _Jv_java_lang_VMRuntime_init ************************************************
94 Register native functions.
96 *******************************************************************************/
98 void _Jv_java_lang_VMRuntime_init(void)
102 u = utf_new_char("java/lang/VMRuntime");
104 native_method_register(u, methods, NATIVE_METHODS_COUNT);
109 * Class: java/lang/VMRuntime
113 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_exit(JNIEnv *env, jclass clazz, s4 status)
115 _Jv_java_lang_Runtime_exit(status);
120 * Class: java/lang/VMRuntime
124 JNIEXPORT s8 JNICALL Java_java_lang_VMRuntime_freeMemory(JNIEnv *env, jclass clazz)
126 return _Jv_java_lang_Runtime_freeMemory();
131 * Class: java/lang/VMRuntime
132 * Method: totalMemory
135 JNIEXPORT s8 JNICALL Java_java_lang_VMRuntime_totalMemory(JNIEnv *env, jclass clazz)
137 return _Jv_java_lang_Runtime_totalMemory();
142 * Class: java/lang/VMRuntime
146 JNIEXPORT s8 JNICALL Java_java_lang_VMRuntime_maxMemory(JNIEnv *env, jclass clazz)
148 return gc_get_max_heap_size();
153 * Class: java/lang/VMRuntime
157 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_gc(JNIEnv *env, jclass clazz)
159 _Jv_java_lang_Runtime_gc();
164 * Class: java/lang/VMRuntime
165 * Method: runFinalization
168 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_runFinalization(JNIEnv *env, jclass clazz)
170 gc_invoke_finalizers();
175 * Class: java/lang/VMRuntime
176 * Method: runFinalizersOnExit
179 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_runFinalizersOnExit(JNIEnv *env, jclass clazz, s4 value)
181 _Jv_java_lang_Runtime_runFinalizersOnExit(value);
186 * Class: java/lang/VMRuntime
187 * Method: runFinalizationsForExit
190 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_runFinalizationForExit(JNIEnv *env, jclass clazz)
192 /* if (finalizeOnExit) { */
194 /* gc_finalize_all(); */
196 /* log_text("Java_java_lang_VMRuntime_runFinalizationForExit called"); */
197 /*gc_finalize_all();*/
198 /*gc_invoke_finalizers();*/
204 * Class: java/lang/VMRuntime
205 * Method: traceInstructions
208 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_traceInstructions(JNIEnv *env, jclass clazz, s4 par1)
215 * Class: java/lang/VMRuntime
216 * Method: traceMethodCalls
219 JNIEXPORT void JNICALL Java_java_lang_VMRuntime_traceMethodCalls(JNIEnv *env, jclass clazz, s4 par1)
226 * Class: java/lang/VMRuntime
227 * Method: availableProcessors
230 JNIEXPORT s4 JNICALL Java_java_lang_VMRuntime_availableProcessors(JNIEnv *env, jclass clazz)
232 #if defined(_SC_NPROC_ONLN)
233 return (s4) sysconf(_SC_NPROC_ONLN);
235 #elif defined(_SC_NPROCESSORS_ONLN)
236 return (s4) sysconf(_SC_NPROCESSORS_ONLN);
238 #elif defined(__DARWIN__)
239 /* this should work in BSD */
241 int ncpu, mib[2], rc;
247 rc = sysctl(mib, 2, &ncpu, &len, NULL, 0);
252 host_basic_info_data_t hinfo;
253 mach_msg_type_number_t hinfo_count = HOST_BASIC_INFO_COUNT;
256 rc = host_info(mach_host_self(), HOST_BASIC_INFO,
257 (host_info_t) &hinfo, &hinfo_count);
259 if (rc != KERN_SUCCESS) {
263 return (s4) hinfo.avail_cpus;
272 * Class: java/lang/VMRuntime
274 * Signature: (Ljava/lang/String;Ljava/lang/ClassLoader;)I
276 JNIEXPORT s4 JNICALL Java_java_lang_VMRuntime_nativeLoad(JNIEnv *env, jclass clazz, java_lang_String *libname, java_lang_ClassLoader *loader)
278 java_objectheader *cl;
280 cl = (java_objectheader *) loader;
282 #if defined(ENABLE_JNI)
283 return _Jv_java_lang_Runtime_loadLibrary(env, libname, cl);
285 return _Jv_java_lang_Runtime_loadLibrary(libname, cl);
291 * Class: java/lang/VMRuntime
292 * Method: mapLibraryName
293 * Signature: (Ljava/lang/String;)Ljava/lang/String;
295 JNIEXPORT java_lang_String* JNICALL Java_java_lang_VMRuntime_mapLibraryName(JNIEnv *env, jclass clazz, java_lang_String *libname)
301 java_objectheader *o;
303 if (libname == NULL) {
304 exceptions_throw_nullpointerexception();
308 u = javastring_toutf((java_objectheader *) libname, false);
310 /* calculate length of library name */
312 buffer_len = strlen("lib");
314 buffer_len += utf_bytes(u);
316 #if defined(__DARWIN__)
317 buffer_len += strlen(".dylib");
319 buffer_len += strlen(".so");
322 buffer_len += strlen("0");
324 dumpsize = dump_size();
325 buffer = DMNEW(char, buffer_len);
327 /* generate library name */
329 strcpy(buffer, "lib");
332 #if defined(__DARWIN__)
333 strcat(buffer, ".dylib");
335 strcat(buffer, ".so");
338 o = javastring_new_from_utf_string(buffer);
342 dump_release(dumpsize);
344 return (java_lang_String *) o;
349 * These are local overrides for various environment variables in Emacs.
350 * Please do not remove this and leave it at the end of the file, where
351 * Emacs will automagically detect them.
352 * ---------------------------------------------------------------------
355 * indent-tabs-mode: t
359 * vim:noexpandtab:sw=4:ts=4: