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/lang/Long.h>
20 #include <java/lang/Runtime.h>
21 #include <java/lang/UnknownError.h>
22 #include <java/lang/UnsatisfiedLinkError.h>
23 #include <gnu/gcj/runtime/FileDeleter.h>
24 #include <gnu/gcj/runtime/FinalizerThread.h>
25 #include <java/io/File.h>
26 #include <java/util/Properties.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>
32 #include <gnu/gcj/runtime/StackTrace.h>
33 #include <java/lang/ArrayIndexOutOfBoundsException.h>
43 #include <sys/utsname.h>
50 #ifdef HAVE_LANGINFO_H
59 /* FIXME: we don't always need this. The next libtool will let us use
60 AC_LTDL_PREOPEN to see if we do. */
61 extern const lt_dlsymlist lt_preloaded_symbols[1] = { { 0, 0 } };
70 find_symbol (lt_dlhandle handle, lt_ptr data)
72 lookup_data *ld = (lookup_data *) data;
73 ld->result = lt_dlsym (handle, ld->symname);
74 return ld->result != NULL;
78 _Jv_FindSymbolInExecutable (const char *symname)
81 data.symname = symname;
83 lt_dlforeach (find_symbol, (lt_ptr) &data);
88 _Jv_SetDLLSearchPath (const char *path)
90 lt_dlsetsearchpath (path);
96 _Jv_FindSymbolInExecutable (const char *)
102 _Jv_SetDLLSearchPath (const char *)
107 #endif /* USE_LTDL */
112 java::lang::Runtime::exitInternal (jint status)
114 // Make status right for Unix. This is perhaps strange.
115 if (status < 0 || status > 255)
119 _Jv_RunAllFinalizers ();
121 // Delete all files registered with File.deleteOnExit()
122 gnu::gcj::runtime::FileDeleter::deleteOnExitNow ();
128 java::lang::Runtime::freeMemory (void)
130 return _Jv_GCFreeMemory ();
134 java::lang::Runtime::gc (void)
140 // List of names for JNI_OnLoad.
141 static const char *onload_names[] = _Jv_platform_onload_names;
145 java::lang::Runtime::_load (jstring path, jboolean do_search)
147 JvSynchronize sync (this);
148 using namespace java::lang;
150 jint len = _Jv_GetStringUTFLength (path);
151 char buf[len + 1 + strlen (_Jv_platform_solib_prefix)
152 + strlen (_Jv_platform_solib_suffix)];
156 strcpy (buf, _Jv_platform_solib_prefix);
157 offset = strlen (_Jv_platform_solib_prefix);
159 jsize total = JvGetStringUTFRegion (path, 0, path->length(), &buf[offset]);
160 buf[offset + total] = '\0';
162 char *lib_name = buf;
166 ClassLoader *sys = ClassLoader::getSystemClassLoader();
167 ClassLoader *look = NULL;
168 gnu::gcj::runtime::StackTrace *t = new gnu::gcj::runtime::StackTrace(10);
171 for (int i = 0; i < 10; ++i)
173 jclass klass = t->classAt(i);
176 ClassLoader *loader = klass->getClassLoaderInternal();
177 if (loader != NULL && loader != sys)
185 catch (::java::lang::ArrayIndexOutOfBoundsException *e)
191 // Don't include solib prefix in string passed to
193 jstring name = look->findLibrary(JvNewStringUTF(&buf[offset]));
196 len = _Jv_GetStringUTFLength (name);
197 lib_name = (char *) _Jv_AllocBytes(len + 1);
198 total = JvGetStringUTFRegion (name, 0,
199 name->length(), lib_name);
200 lib_name[total] = '\0';
201 // Don't append suffixes any more; we have the full file
209 // FIXME: make sure path is absolute.
211 // Synchronize on java.lang.Class. This is to protect the class chain from
212 // concurrent modification by class registration calls which may be run
213 // during the dlopen().
214 JvSynchronize sync (&java::lang::Class::class$);
215 h = do_search ? lt_dlopenext (lib_name) : lt_dlopen (lib_name);
219 const char *msg = lt_dlerror ();
220 jstring str = JvNewStringLatin1 (lib_name);
221 str = str->concat (JvNewStringLatin1 (": "));
222 str = str->concat (JvNewStringLatin1 (msg));
223 throw new UnsatisfiedLinkError (str);
226 // Search for JNI_OnLoad function.
228 const char **name = onload_names;
229 while (*name != NULL)
231 onload = lt_dlsym (h, *name);
239 JavaVM *vm = _Jv_GetJavaVM ();
245 jint vers = ((jint (JNICALL *) (JavaVM *, void *)) onload) (vm, NULL);
246 if (vers != JNI_VERSION_1_1 && vers != JNI_VERSION_1_2
247 && vers != JNI_VERSION_1_4)
249 // FIXME: unload the library.
250 throw new UnsatisfiedLinkError (JvNewStringLatin1 ("unrecognized version from JNI_OnLoad"));
254 throw new UnknownError
255 (JvNewStringLatin1 (do_search
256 ? "Runtime.loadLibrary not implemented"
257 : "Runtime.load not implemented"));
258 #endif /* USE_LTDL */
262 java::lang::Runtime::loadLibraryInternal (jstring lib)
264 JvSynchronize sync (this);
265 using namespace java::lang;
267 jint len = _Jv_GetStringUTFLength (lib);
269 jsize total = JvGetStringUTFRegion (lib, 0, lib->length(), buf);
271 // FIXME: make sure path is absolute.
272 lt_dlhandle h = lt_dlopenext (buf);
276 #endif /* USE_LTDL */
280 java::lang::Runtime::init (void)
284 // Make sure self is opened.
290 java::lang::Runtime::runFinalization (void)
292 gnu::gcj::runtime::FinalizerThread::finalizerReady ();
296 java::lang::Runtime::totalMemory (void)
298 return _Jv_GCTotalMemory ();
302 java::lang::Runtime::maxMemory (void)
304 // We don't have a maximum. FIXME: we might if we ask the GC for
306 return Long::MAX_VALUE;
310 java::lang::Runtime::traceInstructions (jboolean)
316 java::lang::Runtime::traceMethodCalls (jboolean)
321 #if ! defined (DEFAULT_FILE_ENCODING) && defined (HAVE_ICONV) \
322 && defined (HAVE_NL_LANGINFO)
327 setlocale (LC_CTYPE, "");
328 char *e = nl_langinfo (CODESET);
329 if (e == NULL || *e == '\0')
334 #define DEFAULT_FILE_ENCODING file_encoding ()
338 #ifndef DEFAULT_FILE_ENCODING
339 #define DEFAULT_FILE_ENCODING "8859_1"
342 static char *default_file_encoding = DEFAULT_FILE_ENCODING;
345 /* Use overload resolution to find out the signature of getpwuid_r. */
347 /* This is Posix getpwuid_r. */
348 template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
350 getpwuid_adaptor(int (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
351 T_buf *buf_r, T_len len_r,
352 T_passwd **pwd_entry_ptr),
353 uid_t user_id, struct passwd *pwd_r,
354 char *buf_r, size_t len_r, struct passwd **pwd_entry)
356 return getpwuid_r (user_id, pwd_r, buf_r, len_r, pwd_entry);
359 /* This is used on HPUX 10.20 */
360 template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
362 getpwuid_adaptor(int (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
363 T_buf *buf_r, T_len len_r),
364 uid_t user_id, struct passwd *pwd_r,
365 char *buf_r, size_t len_r, struct passwd **pwd_entry)
367 return getpwuid_r (user_id, pwd_r, buf_r, len_r);
370 /* This is used on IRIX 5.2. */
371 template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
373 getpwuid_adaptor(T_passwd * (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
374 T_buf *buf_r, T_len len_r),
375 uid_t user_id, struct passwd *pwd_r,
376 char *buf_r, size_t len_r, struct passwd **pwd_entry)
378 *pwd_entry = getpwuid_r (user_id, pwd_r, buf_r, len_r);
379 return (*pwd_entry == NULL) ? errno : 0;
384 java::lang::Runtime::insertSystemProperties (java::util::Properties *newprops)
386 // A convenience define.
387 #define SET(Prop,Val) \
388 newprops->put(JvNewStringLatin1 (Prop), JvNewStringLatin1 (Val))
390 // A mixture of the Java Product Versioning Specification
391 // (introduced in 1.2), and earlier versioning properties. Some
392 // programs rely on seeing values that they expect, so we claim to
393 // be a 1.4-ish VM for their sake.
394 SET ("java.version", "1.4.2");
395 SET ("java.runtime.version", "1.4.2");
396 SET ("java.vendor", "Free Software Foundation, Inc.");
397 SET ("java.vendor.url", "http://gcc.gnu.org/java/");
398 SET ("java.class.version", "46.0");
399 SET ("java.vm.specification.version", "1.0");
400 SET ("java.vm.specification.name", "Java(tm) Virtual Machine Specification");
401 SET ("java.vm.specification.vendor", "Sun Microsystems Inc.");
402 SET ("java.vm.version", __VERSION__);
403 SET ("java.vm.vendor", "Free Software Foundation, Inc.");
404 SET ("java.vm.name", "GNU libgcj");
405 SET ("java.specification.version", "1.4");
406 SET ("java.specification.name", "Java(tm) Platform API Specification");
407 SET ("java.specification.vendor", "Sun Microsystems Inc.");
410 #define NAME "GNU libgcj "
411 strcpy (value, NAME);
412 strncpy (value + sizeof (NAME) - 1, __VERSION__,
413 sizeof(value) - sizeof(NAME));
414 value[sizeof (value) - 1] = '\0';
415 jstring version = JvNewStringLatin1 (value);
416 newprops->put (JvNewStringLatin1 ("java.fullversion"), version);
417 newprops->put (JvNewStringLatin1 ("java.vm.info"), version);
419 // This definition is rather arbitrary: we choose $(prefix). In
420 // part we do this because most people specify only --prefix and
421 // nothing else when installing gcj. Plus, people are free to
422 // redefine `java.home' with `-D' if necessary.
423 SET ("java.home", PREFIX);
424 SET ("gnu.classpath.home", PREFIX);
425 // This is set to $(libdir) because we use this to find .security
427 char val2[sizeof ("file://") + sizeof (LIBDIR) + 1];
428 strcpy (val2, "file://");
429 strcat (val2, LIBDIR);
430 SET ("gnu.classpath.home.url", val2);
432 SET ("file.encoding", default_file_encoding);
438 SET ("os.name", u.sysname);
439 SET ("os.arch", u.machine);
440 SET ("os.version", u.release);
444 SET ("os.name", "unknown");
445 SET ("os.arch", "unknown");
446 SET ("os.version", "unknown");
448 #endif /* HAVE_UNAME */
452 uid_t user_id = getuid ();
453 struct passwd *pwd_entry;
455 #ifdef HAVE_GETPWUID_R
458 char *buf_r = (char *) _Jv_AllocBytes (len_r);
460 while (buf_r != NULL)
462 int r = getpwuid_adaptor (getpwuid_r, user_id, &pwd_r,
463 buf_r, len_r, &pwd_entry);
466 else if (r != ERANGE)
472 buf_r = (char *) _Jv_AllocBytes (len_r);
475 pwd_entry = getpwuid (user_id);
476 #endif /* HAVE_GETPWUID_R */
478 if (pwd_entry != NULL)
480 SET ("user.name", pwd_entry->pw_name);
481 SET ("user.home", pwd_entry->pw_dir);
483 #endif /* HAVE_PWD_H */
484 #endif /* NO_GETUID */
488 /* Use getcwd to set "user.dir". */
490 char *buffer = (char *) malloc (buflen);
491 while (buffer != NULL)
493 if (getcwd (buffer, buflen) != NULL)
495 SET ("user.dir", buffer);
501 buffer = (char *) realloc (buffer, buflen);
505 #endif /* HAVE_UNISTD_H */
506 #endif /* HAVE_GETCWD */
508 // Set user locale properties based on setlocale()
509 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
510 // We let the user choose the locale. However, since Java differs
511 // from POSIX, we arbitrarily pick LC_MESSAGES as determining the
512 // Java locale. We can't use LC_ALL because it might return a full
513 // list of all the settings. If we don't have LC_MESSAGES then we
514 // just default to `en_US'.
515 setlocale (LC_ALL, "");
516 char *locale = setlocale (LC_MESSAGES, "");
517 if (locale && strlen (locale) >= 2)
521 // copy the first two chars to user.language
522 strncpy (buf, locale, 2);
523 SET ("user.language", buf);
524 // if the next char is a '_', copy the two after that to user.region
526 if (locale[0] == '_')
529 strncpy (buf, locale, 2);
530 SET ("user.region", buf);
534 #endif /* HAVE_SETLOCALE and HAVE_LC_MESSAGES */
536 SET ("user.language", "en");
537 SET ("user.region", "US");
540 // The java extensions directory.
541 SET ("java.ext.dirs", JAVA_EXT_DIRS);
543 // The path to libgcj's boot classes
544 SET ("sun.boot.class.path", BOOT_CLASS_PATH);
546 // Set some properties according to whatever was compiled in with
547 // `-D'. Important: after this point, the only properties that
548 // should be set are those which either the user cannot meaningfully
549 // override, or which augment whatever value the user has provided.
550 for (int i = 0; _Jv_Compiler_Properties[i]; ++i)
554 for (s = p = _Jv_Compiler_Properties[i]; *s && *s != '='; ++s)
556 jstring name = JvNewStringLatin1 (p, s - p);
557 jstring val = JvNewStringLatin1 (*s == '=' ? s + 1 : s);
558 newprops->put (name, val);
561 // Set the system properties from the user's environment.
562 #ifndef DISABLE_GETENV_PROPERTIES
563 if (_Jv_Environment_Properties)
567 while (_Jv_Environment_Properties[i].key)
569 SET (_Jv_Environment_Properties[i].key,
570 _Jv_Environment_Properties[i].value);
576 if (_Jv_Jar_Class_Path)
577 newprops->put(JvNewStringLatin1 ("java.class.path"),
578 JvNewStringLatin1 (_Jv_Jar_Class_Path));
581 // FIXME: find libgcj.zip and append its path?
582 char *classpath = ::getenv("CLASSPATH");
583 jstring cp = newprops->getProperty (JvNewStringLatin1("java.class.path"));
584 java::lang::StringBuffer *sb = new java::lang::StringBuffer ();
588 sb->append (JvNewStringLatin1 (classpath));
589 sb->append (_Jv_platform_path_separator);
594 sb->append ((jchar) '.');
596 newprops->put(JvNewStringLatin1 ("java.class.path"),
600 // The name used to invoke this process (argv[0] in C).
601 SET ("gnu.gcj.progname", _Jv_GetSafeArg (0));
603 // Allow platform specific settings and overrides.
604 _Jv_platform_initProperties (newprops);
606 // If java.library.path is set, tell libltdl so we search the new
607 // directories as well. FIXME: does this work properly on Windows?
608 String *path = newprops->getProperty(JvNewStringLatin1("java.library.path"));
611 char *val = (char *) _Jv_Malloc (JvGetStringUTFLength (path) + 1);
612 jsize total = JvGetStringUTFRegion (path, 0, path->length(), val);
614 _Jv_SetDLLSearchPath (val);
619 // Set a value for user code to see.
620 // FIXME: JDK sets this to the actual path used, including
621 // LD_LIBRARY_PATH, etc.
622 SET ("java.library.path", "");
626 java::lang::Process *
627 java::lang::Runtime::execInternal (jstringArray cmd,
631 return new java::lang::ConcreteProcess (cmd, env, dir);
635 java::lang::Runtime::availableProcessors (void)
637 // FIXME: find the real value.
642 java::lang::Runtime::nativeGetLibname (jstring pathname, jstring libname)
644 java::lang::StringBuffer *sb = new java::lang::StringBuffer ();
645 sb->append(pathname);
646 if (pathname->length() > 0)
647 sb->append (_Jv_platform_file_separator);
649 sb->append (JvNewStringLatin1 (_Jv_platform_solib_prefix));
651 sb->append (JvNewStringLatin1 (_Jv_platform_solib_suffix));
653 return sb->toString();