1 // natRuntime.cc - Implementation of native side of Runtime class.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 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_t 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_t) &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 extern const char **_Jv_argv;
113 // our process' command line arguments
116 java::lang::Runtime::exitInternal (jint status)
118 // Make status right for Unix. This is perhaps strange.
119 if (status < 0 || status > 255)
123 _Jv_RunAllFinalizers ();
125 // Delete all files registered with File.deleteOnExit()
126 gnu::gcj::runtime::FileDeleter::deleteOnExitNow ();
132 java::lang::Runtime::freeMemory (void)
134 return _Jv_GCFreeMemory ();
138 java::lang::Runtime::gc (void)
144 // List of names for JNI_OnLoad.
145 static const char *onload_names[] = _Jv_platform_onload_names;
149 java::lang::Runtime::_load (jstring path, jboolean do_search)
151 JvSynchronize sync (this);
152 using namespace java::lang;
154 jint len = _Jv_GetStringUTFLength (path);
155 char buf[len + 1 + strlen (_Jv_platform_solib_prefix)
156 + strlen (_Jv_platform_solib_suffix)];
160 strcpy (buf, _Jv_platform_solib_prefix);
161 offset = strlen (_Jv_platform_solib_prefix);
163 jsize total = JvGetStringUTFRegion (path, 0, path->length(), &buf[offset]);
164 buf[offset + total] = '\0';
166 char *lib_name = buf;
170 ClassLoader *sys = ClassLoader::getSystemClassLoader();
171 ClassLoader *look = NULL;
172 gnu::gcj::runtime::StackTrace *t = new gnu::gcj::runtime::StackTrace(10);
175 for (int i = 0; i < 10; ++i)
177 jclass klass = t->classAt(i);
180 ClassLoader *loader = klass->getClassLoaderInternal();
181 if (loader != NULL && loader != sys)
189 catch (::java::lang::ArrayIndexOutOfBoundsException *e)
195 // Don't include solib prefix in string passed to
197 jstring name = look->findLibrary(JvNewStringUTF(&buf[offset]));
200 len = _Jv_GetStringUTFLength (name);
201 lib_name = (char *) _Jv_AllocBytes(len + 1);
202 total = JvGetStringUTFRegion (name, 0,
203 name->length(), lib_name);
204 lib_name[total] = '\0';
205 // Don't append suffixes any more; we have the full file
213 // FIXME: make sure path is absolute.
215 // Synchronize on java.lang.Class. This is to protect the class chain from
216 // concurrent modification by class registration calls which may be run
217 // during the dlopen().
218 JvSynchronize sync (&java::lang::Class::class$);
219 h = do_search ? lt_dlopenext (lib_name) : lt_dlopen (lib_name);
223 const char *msg = lt_dlerror ();
224 jstring str = path->concat (JvNewStringLatin1 (": "));
225 str = str->concat (JvNewStringLatin1 (msg));
226 throw new UnsatisfiedLinkError (str);
229 // Search for JNI_OnLoad function.
231 const char **name = onload_names;
232 while (*name != NULL)
234 onload = lt_dlsym (h, *name);
242 JavaVM *vm = _Jv_GetJavaVM ();
248 jint vers = ((jint (JNICALL *) (JavaVM *, void *)) onload) (vm, NULL);
249 if (vers != JNI_VERSION_1_1 && vers != JNI_VERSION_1_2
250 && vers != JNI_VERSION_1_4)
252 // FIXME: unload the library.
253 throw new UnsatisfiedLinkError (JvNewStringLatin1 ("unrecognized version from JNI_OnLoad"));
257 throw new UnknownError
258 (JvNewStringLatin1 (do_search
259 ? "Runtime.loadLibrary not implemented"
260 : "Runtime.load not implemented"));
261 #endif /* USE_LTDL */
265 java::lang::Runtime::loadLibraryInternal (jstring lib)
267 JvSynchronize sync (this);
268 using namespace java::lang;
270 jint len = _Jv_GetStringUTFLength (lib);
272 jsize total = JvGetStringUTFRegion (lib, 0, lib->length(), buf);
274 // FIXME: make sure path is absolute.
275 lt_dlhandle h = lt_dlopenext (buf);
279 #endif /* USE_LTDL */
283 java::lang::Runtime::init (void)
287 // Make sure self is opened.
293 java::lang::Runtime::runFinalization (void)
295 gnu::gcj::runtime::FinalizerThread::finalizerReady ();
299 java::lang::Runtime::totalMemory (void)
301 return _Jv_GCTotalMemory ();
305 java::lang::Runtime::maxMemory (void)
307 // We don't have a maximum. FIXME: we might if we ask the GC for
309 return Long::MAX_VALUE;
313 java::lang::Runtime::traceInstructions (jboolean)
319 java::lang::Runtime::traceMethodCalls (jboolean)
324 #if ! defined (DEFAULT_FILE_ENCODING) && defined (HAVE_ICONV) \
325 && defined (HAVE_NL_LANGINFO)
330 setlocale (LC_CTYPE, "");
331 char *e = nl_langinfo (CODESET);
332 if (e == NULL || *e == '\0')
337 #define DEFAULT_FILE_ENCODING file_encoding ()
341 #ifndef DEFAULT_FILE_ENCODING
342 #define DEFAULT_FILE_ENCODING "8859_1"
345 static char *default_file_encoding = DEFAULT_FILE_ENCODING;
348 /* Use overload resolution to find out the signature of getpwuid_r. */
350 /* This is Posix getpwuid_r. */
351 template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
353 getpwuid_adaptor(int (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
354 T_buf *buf_r, T_len len_r,
355 T_passwd **pwd_entry_ptr),
356 uid_t user_id, struct passwd *pwd_r,
357 char *buf_r, size_t len_r, struct passwd **pwd_entry)
359 return getpwuid_r (user_id, pwd_r, buf_r, len_r, pwd_entry);
362 /* This is used on HPUX 10.20 */
363 template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
365 getpwuid_adaptor(int (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
366 T_buf *buf_r, T_len len_r),
367 uid_t user_id, struct passwd *pwd_r,
368 char *buf_r, size_t len_r, struct passwd **pwd_entry)
370 return getpwuid_r (user_id, pwd_r, buf_r, len_r);
373 /* This is used on IRIX 5.2. */
374 template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
376 getpwuid_adaptor(T_passwd * (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
377 T_buf *buf_r, T_len len_r),
378 uid_t user_id, struct passwd *pwd_r,
379 char *buf_r, size_t len_r, struct passwd **pwd_entry)
381 *pwd_entry = getpwuid_r (user_id, pwd_r, buf_r, len_r);
382 return (*pwd_entry == NULL) ? errno : 0;
387 java::lang::Runtime::insertSystemProperties (java::util::Properties *newprops)
389 // A convenience define.
390 #define SET(Prop,Val) \
391 newprops->put(JvNewStringLatin1 (Prop), JvNewStringLatin1 (Val))
393 // A mixture of the Java Product Versioning Specification
394 // (introduced in 1.2), and earlier versioning properties.
395 SET ("java.version", GCJVERSION);
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", "1.3");
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 // Set some properties according to whatever was compiled in with
542 for (int i = 0; _Jv_Compiler_Properties[i]; ++i)
546 for (s = p = _Jv_Compiler_Properties[i]; *s && *s != '='; ++s)
548 jstring name = JvNewStringLatin1 (p, s - p);
549 jstring val = JvNewStringLatin1 (*s == '=' ? s + 1 : s);
550 newprops->put (name, val);
553 // Set the system properties from the user's environment.
554 #ifndef DISABLE_GETENV_PROPERTIES
555 if (_Jv_Environment_Properties)
559 while (_Jv_Environment_Properties[i].key)
561 SET (_Jv_Environment_Properties[i].key,
562 _Jv_Environment_Properties[i].value);
568 if (_Jv_Jar_Class_Path)
569 newprops->put(JvNewStringLatin1 ("java.class.path"),
570 JvNewStringLatin1 (_Jv_Jar_Class_Path));
573 // FIXME: find libgcj.zip and append its path?
574 char *classpath = ::getenv("CLASSPATH");
575 jstring cp = newprops->getProperty (JvNewStringLatin1("java.class.path"));
576 java::lang::StringBuffer *sb = new java::lang::StringBuffer ();
580 sb->append (JvNewStringLatin1 (classpath));
581 sb->append (_Jv_platform_path_separator);
586 sb->append ((jchar) '.');
588 newprops->put(JvNewStringLatin1 ("java.class.path"),
592 // The name used to invoke this process (argv[0] in C).
593 SET ("gnu.gcj.progname", _Jv_argv[0]);
595 // Allow platform specific settings and overrides.
596 _Jv_platform_initProperties (newprops);
598 // If java.library.path is set, tell libltdl so we search the new
599 // directories as well. FIXME: does this work properly on Windows?
600 String *path = newprops->getProperty(JvNewStringLatin1("java.library.path"));
603 char *val = (char *) _Jv_Malloc (JvGetStringUTFLength (path) + 1);
604 jsize total = JvGetStringUTFRegion (path, 0, path->length(), val);
606 _Jv_SetDLLSearchPath (val);
611 // Set a value for user code to see.
612 // FIXME: JDK sets this to the actual path used, including
613 // LD_LIBRARY_PATH, etc.
614 SET ("java.library.path", "");
618 java::lang::Process *
619 java::lang::Runtime::execInternal (jstringArray cmd,
623 return new java::lang::ConcreteProcess (cmd, env, dir);
627 java::lang::Runtime::availableProcessors (void)
629 // FIXME: find the real value.
634 java::lang::Runtime::nativeGetLibname (jstring pathname, jstring libname)
636 java::lang::StringBuffer *sb = new java::lang::StringBuffer ();
637 sb->append(pathname);
638 if (pathname->length() > 0)
639 sb->append (_Jv_platform_file_separator);
641 sb->append (JvNewStringLatin1 (_Jv_platform_solib_prefix));
643 sb->append (JvNewStringLatin1 (_Jv_platform_solib_suffix));
645 return sb->toString();