1 // natRuntime.cc - Implementation of native side of Runtime class.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation
5 This file is part of libgcj.
7 This software is copyrighted work licensed under the terms of the
8 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
18 #include <java-props.h>
19 #include <java-stack.h>
20 #include <java/lang/Long.h>
21 #include <java/lang/Runtime.h>
22 #include <java/lang/UnknownError.h>
23 #include <java/lang/UnsatisfiedLinkError.h>
24 #include <gnu/gcj/runtime/FileDeleter.h>
25 #include <gnu/gcj/runtime/FinalizerThread.h>
26 #include <java/io/File.h>
27 #include <java/util/TimeZone.h>
28 #include <java/lang/StringBuffer.h>
29 #include <java/lang/Process.h>
30 #include <java/lang/ConcreteProcess.h>
31 #include <java/lang/ClassLoader.h>
44 #ifdef HAVE_LANGINFO_H
53 /* FIXME: we don't always need this. The next libtool will let us use
54 AC_LTDL_PREOPEN to see if we do. */
55 extern const lt_dlsymlist lt_preloaded_symbols[1] = { { 0, 0 } };
64 find_symbol (lt_dlhandle handle, lt_ptr data)
66 lookup_data *ld = (lookup_data *) data;
67 ld->result = lt_dlsym (handle, ld->symname);
68 return ld->result != NULL;
72 _Jv_FindSymbolInExecutable (const char *symname)
75 data.symname = symname;
77 lt_dlforeach (find_symbol, (lt_ptr) &data);
84 _Jv_FindSymbolInExecutable (const char *)
94 java::lang::Runtime::exitInternal (jint status)
96 // Make status right for Unix. This is perhaps strange.
97 if (status < 0 || status > 255)
101 _Jv_RunAllFinalizers ();
103 // Delete all files registered with File.deleteOnExit()
104 gnu::gcj::runtime::FileDeleter::deleteOnExitNow ();
110 java::lang::Runtime::freeMemory (void)
112 return _Jv_GCFreeMemory ();
116 java::lang::Runtime::gc (void)
122 // List of names for JNI_OnLoad.
123 static const char *onload_names[] = _Jv_platform_onload_names;
127 java::lang::Runtime::_load (jstring path, jboolean do_search)
129 JvSynchronize sync (this);
130 using namespace java::lang;
132 jint len = _Jv_GetStringUTFLength (path);
133 char buf[len + 1 + strlen (_Jv_platform_solib_prefix)
134 + strlen (_Jv_platform_solib_suffix)];
138 strcpy (buf, _Jv_platform_solib_prefix);
139 offset = strlen (_Jv_platform_solib_prefix);
141 jsize total = JvGetStringUTFRegion (path, 0, path->length(), &buf[offset]);
142 buf[offset + total] = '\0';
144 char *lib_name = buf;
148 ClassLoader *look = _Jv_StackTrace::GetFirstNonSystemClassLoader ();
152 // Don't include solib prefix in string passed to
154 jstring name = look->findLibrary(JvNewStringUTF(&buf[offset]));
157 len = _Jv_GetStringUTFLength (name);
158 lib_name = (char *) _Jv_AllocBytes(len + 1);
159 total = JvGetStringUTFRegion (name, 0,
160 name->length(), lib_name);
161 lib_name[total] = '\0';
162 // Don't append suffixes any more; we have the full file
170 // FIXME: make sure path is absolute.
172 // Synchronize on java.lang.Class. This is to protect the class chain from
173 // concurrent modification by class registration calls which may be run
174 // during the dlopen().
175 JvSynchronize sync (&java::lang::Class::class$);
176 h = do_search ? lt_dlopenext (lib_name) : lt_dlopen (lib_name);
180 const char *msg = lt_dlerror ();
181 jstring str = JvNewStringLatin1 (lib_name);
182 str = str->concat (JvNewStringLatin1 (": "));
183 str = str->concat (JvNewStringLatin1 (msg));
184 throw new UnsatisfiedLinkError (str);
187 // Search for JNI_OnLoad function.
189 const char **name = onload_names;
190 while (*name != NULL)
192 onload = lt_dlsym (h, *name);
200 JavaVM *vm = _Jv_GetJavaVM ();
206 jint vers = ((jint (JNICALL *) (JavaVM *, void *)) onload) (vm, NULL);
207 if (vers != JNI_VERSION_1_1 && vers != JNI_VERSION_1_2
208 && vers != JNI_VERSION_1_4)
210 // FIXME: unload the library.
211 throw new UnsatisfiedLinkError (JvNewStringLatin1 ("unrecognized version from JNI_OnLoad"));
215 throw new UnknownError
216 (JvNewStringLatin1 (do_search
217 ? "Runtime.loadLibrary not implemented"
218 : "Runtime.load not implemented"));
219 #endif /* USE_LTDL */
223 java::lang::Runtime::loadLibraryInternal (jstring lib)
225 JvSynchronize sync (this);
226 using namespace java::lang;
228 jint len = _Jv_GetStringUTFLength (lib);
230 jsize total = JvGetStringUTFRegion (lib, 0, lib->length(), buf);
232 // FIXME: make sure path is absolute.
233 lt_dlhandle h = lt_dlopenext (buf);
237 #endif /* USE_LTDL */
241 java::lang::Runtime::init (void)
245 // Make sure self is opened.
251 java::lang::Runtime::runFinalization (void)
253 gnu::gcj::runtime::FinalizerThread::finalizerReady ();
257 java::lang::Runtime::totalMemory (void)
259 return _Jv_GCTotalMemory ();
263 java::lang::Runtime::maxMemory (void)
265 // We don't have a maximum. FIXME: we might if we ask the GC for
267 return Long::MAX_VALUE;
271 java::lang::Runtime::traceInstructions (jboolean)
277 java::lang::Runtime::traceMethodCalls (jboolean)
282 java::lang::Process *
283 java::lang::Runtime::execInternal (jstringArray cmd,
287 return new java::lang::ConcreteProcess (cmd, env, dir);
291 java::lang::Runtime::availableProcessors (void)
293 // FIXME: find the real value.
298 java::lang::Runtime::nativeGetLibname (jstring pathname, jstring libname)
300 java::lang::StringBuffer *sb = new java::lang::StringBuffer ();
301 sb->append(pathname);
302 if (pathname->length() > 0)
303 sb->append (_Jv_platform_file_separator);
305 sb->append (JvNewStringLatin1 (_Jv_platform_solib_prefix));
307 sb->append (JvNewStringLatin1 (_Jv_platform_solib_suffix));
309 return sb->toString();