mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-19 10:39:13 +08:00
644 lines
16 KiB
C++
644 lines
16 KiB
C++
// natRuntime.cc - Implementation of native side of Runtime class.
|
||
|
||
/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation
|
||
|
||
This file is part of libgcj.
|
||
|
||
This software is copyrighted work licensed under the terms of the
|
||
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
|
||
details. */
|
||
|
||
#include <config.h>
|
||
#include <platform.h>
|
||
|
||
#include <stdlib.h>
|
||
|
||
#include <gcj/cni.h>
|
||
#include <jvm.h>
|
||
#include <java-props.h>
|
||
#include <java/lang/Long.h>
|
||
#include <java/lang/Runtime.h>
|
||
#include <java/lang/UnknownError.h>
|
||
#include <java/lang/UnsatisfiedLinkError.h>
|
||
#include <gnu/gcj/runtime/FileDeleter.h>
|
||
#include <gnu/gcj/runtime/FinalizerThread.h>
|
||
#include <java/io/File.h>
|
||
#include <java/util/Properties.h>
|
||
#include <java/util/TimeZone.h>
|
||
#include <java/lang/StringBuffer.h>
|
||
#include <java/lang/Process.h>
|
||
#include <java/lang/ConcreteProcess.h>
|
||
#include <java/lang/ClassLoader.h>
|
||
#include <gnu/gcj/runtime/StackTrace.h>
|
||
#include <java/lang/ArrayIndexOutOfBoundsException.h>
|
||
|
||
#include <jni.h>
|
||
|
||
#ifdef HAVE_PWD_H
|
||
#include <pwd.h>
|
||
#endif
|
||
#include <errno.h>
|
||
|
||
#ifdef HAVE_UNAME
|
||
#include <sys/utsname.h>
|
||
#endif
|
||
|
||
#ifdef HAVE_LOCALE_H
|
||
#include <locale.h>
|
||
#endif
|
||
|
||
#ifdef HAVE_LANGINFO_H
|
||
#include <langinfo.h>
|
||
#endif
|
||
|
||
|
||
|
||
#ifdef USE_LTDL
|
||
#include <ltdl.h>
|
||
|
||
/* FIXME: we don't always need this. The next libtool will let us use
|
||
AC_LTDL_PREOPEN to see if we do. */
|
||
extern const lt_dlsymlist lt_preloaded_symbols[1] = { { 0, 0 } };
|
||
|
||
struct lookup_data
|
||
{
|
||
const char *symname;
|
||
void *result;
|
||
};
|
||
|
||
static int
|
||
find_symbol (lt_dlhandle handle, lt_ptr_t data)
|
||
{
|
||
lookup_data *ld = (lookup_data *) data;
|
||
ld->result = lt_dlsym (handle, ld->symname);
|
||
return ld->result != NULL;
|
||
}
|
||
|
||
void *
|
||
_Jv_FindSymbolInExecutable (const char *symname)
|
||
{
|
||
lookup_data data;
|
||
data.symname = symname;
|
||
data.result = NULL;
|
||
lt_dlforeach (find_symbol, (lt_ptr_t) &data);
|
||
return data.result;
|
||
}
|
||
|
||
void
|
||
_Jv_SetDLLSearchPath (const char *path)
|
||
{
|
||
lt_dlsetsearchpath (path);
|
||
}
|
||
|
||
#else
|
||
|
||
void *
|
||
_Jv_FindSymbolInExecutable (const char *)
|
||
{
|
||
return NULL;
|
||
}
|
||
|
||
void
|
||
_Jv_SetDLLSearchPath (const char *)
|
||
{
|
||
// Nothing.
|
||
}
|
||
|
||
#endif /* USE_LTDL */
|
||
|
||
|
||
|
||
void
|
||
java::lang::Runtime::exitInternal (jint status)
|
||
{
|
||
// Make status right for Unix. This is perhaps strange.
|
||
if (status < 0 || status > 255)
|
||
status = 255;
|
||
|
||
if (finalizeOnExit)
|
||
_Jv_RunAllFinalizers ();
|
||
|
||
// Delete all files registered with File.deleteOnExit()
|
||
gnu::gcj::runtime::FileDeleter::deleteOnExitNow ();
|
||
|
||
::exit (status);
|
||
}
|
||
|
||
jlong
|
||
java::lang::Runtime::freeMemory (void)
|
||
{
|
||
return _Jv_GCFreeMemory ();
|
||
}
|
||
|
||
void
|
||
java::lang::Runtime::gc (void)
|
||
{
|
||
_Jv_RunGC ();
|
||
}
|
||
|
||
#ifdef USE_LTDL
|
||
// List of names for JNI_OnLoad.
|
||
static const char *onload_names[] = _Jv_platform_onload_names;
|
||
#endif
|
||
|
||
void
|
||
java::lang::Runtime::_load (jstring path, jboolean do_search)
|
||
{
|
||
JvSynchronize sync (this);
|
||
using namespace java::lang;
|
||
#ifdef USE_LTDL
|
||
jint len = _Jv_GetStringUTFLength (path);
|
||
char buf[len + 1 + strlen (_Jv_platform_solib_prefix)
|
||
+ strlen (_Jv_platform_solib_suffix)];
|
||
int offset = 0;
|
||
if (do_search)
|
||
{
|
||
strcpy (buf, _Jv_platform_solib_prefix);
|
||
offset = strlen (_Jv_platform_solib_prefix);
|
||
}
|
||
jsize total = JvGetStringUTFRegion (path, 0, path->length(), &buf[offset]);
|
||
buf[offset + total] = '\0';
|
||
|
||
char *lib_name = buf;
|
||
|
||
if (do_search)
|
||
{
|
||
ClassLoader *sys = ClassLoader::getSystemClassLoader();
|
||
ClassLoader *look = NULL;
|
||
gnu::gcj::runtime::StackTrace *t = new gnu::gcj::runtime::StackTrace(10);
|
||
try
|
||
{
|
||
for (int i = 0; i < 10; ++i)
|
||
{
|
||
jclass klass = t->classAt(i);
|
||
if (klass != NULL)
|
||
{
|
||
ClassLoader *loader = klass->getClassLoaderInternal();
|
||
if (loader != NULL && loader != sys)
|
||
{
|
||
look = loader;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
catch (::java::lang::ArrayIndexOutOfBoundsException *e)
|
||
{
|
||
}
|
||
|
||
if (look != NULL)
|
||
{
|
||
// Don't include solib prefix in string passed to
|
||
// findLibrary.
|
||
jstring name = look->findLibrary(JvNewStringUTF(&buf[offset]));
|
||
if (name != NULL)
|
||
{
|
||
len = _Jv_GetStringUTFLength (name);
|
||
lib_name = (char *) _Jv_AllocBytes(len + 1);
|
||
total = JvGetStringUTFRegion (name, 0,
|
||
name->length(), lib_name);
|
||
lib_name[total] = '\0';
|
||
// Don't append suffixes any more; we have the full file
|
||
// name.
|
||
do_search = false;
|
||
}
|
||
}
|
||
}
|
||
|
||
lt_dlhandle h;
|
||
// FIXME: make sure path is absolute.
|
||
{
|
||
// Synchronize on java.lang.Class. This is to protect the class chain from
|
||
// concurrent modification by class registration calls which may be run
|
||
// during the dlopen().
|
||
JvSynchronize sync (&java::lang::Class::class$);
|
||
h = do_search ? lt_dlopenext (lib_name) : lt_dlopen (lib_name);
|
||
}
|
||
if (h == NULL)
|
||
{
|
||
const char *msg = lt_dlerror ();
|
||
jstring str = JvNewStringLatin1 (lib_name);
|
||
str = str->concat (JvNewStringLatin1 (": "));
|
||
str = str->concat (JvNewStringLatin1 (msg));
|
||
throw new UnsatisfiedLinkError (str);
|
||
}
|
||
|
||
// Search for JNI_OnLoad function.
|
||
void *onload = NULL;
|
||
const char **name = onload_names;
|
||
while (*name != NULL)
|
||
{
|
||
onload = lt_dlsym (h, *name);
|
||
if (onload != NULL)
|
||
break;
|
||
++name;
|
||
}
|
||
|
||
if (onload != NULL)
|
||
{
|
||
JavaVM *vm = _Jv_GetJavaVM ();
|
||
if (vm == NULL)
|
||
{
|
||
// FIXME: what?
|
||
return;
|
||
}
|
||
jint vers = ((jint (JNICALL *) (JavaVM *, void *)) onload) (vm, NULL);
|
||
if (vers != JNI_VERSION_1_1 && vers != JNI_VERSION_1_2
|
||
&& vers != JNI_VERSION_1_4)
|
||
{
|
||
// FIXME: unload the library.
|
||
throw new UnsatisfiedLinkError (JvNewStringLatin1 ("unrecognized version from JNI_OnLoad"));
|
||
}
|
||
}
|
||
#else
|
||
throw new UnknownError
|
||
(JvNewStringLatin1 (do_search
|
||
? "Runtime.loadLibrary not implemented"
|
||
: "Runtime.load not implemented"));
|
||
#endif /* USE_LTDL */
|
||
}
|
||
|
||
jboolean
|
||
java::lang::Runtime::loadLibraryInternal (jstring lib)
|
||
{
|
||
JvSynchronize sync (this);
|
||
using namespace java::lang;
|
||
#ifdef USE_LTDL
|
||
jint len = _Jv_GetStringUTFLength (lib);
|
||
char buf[len + 1];
|
||
jsize total = JvGetStringUTFRegion (lib, 0, lib->length(), buf);
|
||
buf[total] = '\0';
|
||
// FIXME: make sure path is absolute.
|
||
lt_dlhandle h = lt_dlopenext (buf);
|
||
return h != NULL;
|
||
#else
|
||
return false;
|
||
#endif /* USE_LTDL */
|
||
}
|
||
|
||
void
|
||
java::lang::Runtime::init (void)
|
||
{
|
||
#ifdef USE_LTDL
|
||
lt_dlinit ();
|
||
// Make sure self is opened.
|
||
lt_dlopen (NULL);
|
||
#endif
|
||
}
|
||
|
||
void
|
||
java::lang::Runtime::runFinalization (void)
|
||
{
|
||
gnu::gcj::runtime::FinalizerThread::finalizerReady ();
|
||
}
|
||
|
||
jlong
|
||
java::lang::Runtime::totalMemory (void)
|
||
{
|
||
return _Jv_GCTotalMemory ();
|
||
}
|
||
|
||
jlong
|
||
java::lang::Runtime::maxMemory (void)
|
||
{
|
||
// We don't have a maximum. FIXME: we might if we ask the GC for
|
||
// one.
|
||
return Long::MAX_VALUE;
|
||
}
|
||
|
||
void
|
||
java::lang::Runtime::traceInstructions (jboolean)
|
||
{
|
||
// Do nothing.
|
||
}
|
||
|
||
void
|
||
java::lang::Runtime::traceMethodCalls (jboolean)
|
||
{
|
||
// Do nothing.
|
||
}
|
||
|
||
#if ! defined (DEFAULT_FILE_ENCODING) && defined (HAVE_ICONV) \
|
||
&& defined (HAVE_NL_LANGINFO)
|
||
|
||
static char *
|
||
file_encoding ()
|
||
{
|
||
setlocale (LC_CTYPE, "");
|
||
char *e = nl_langinfo (CODESET);
|
||
if (e == NULL || *e == '\0')
|
||
e = "8859_1";
|
||
return e;
|
||
}
|
||
|
||
#define DEFAULT_FILE_ENCODING file_encoding ()
|
||
|
||
#endif
|
||
|
||
#ifndef DEFAULT_FILE_ENCODING
|
||
#define DEFAULT_FILE_ENCODING "8859_1"
|
||
#endif
|
||
|
||
static char *default_file_encoding = DEFAULT_FILE_ENCODING;
|
||
|
||
#if HAVE_GETPWUID_R
|
||
/* Use overload resolution to find out the signature of getpwuid_r. */
|
||
|
||
/* This is Posix getpwuid_r. */
|
||
template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
|
||
static inline int
|
||
getpwuid_adaptor(int (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
|
||
T_buf *buf_r, T_len len_r,
|
||
T_passwd **pwd_entry_ptr),
|
||
uid_t user_id, struct passwd *pwd_r,
|
||
char *buf_r, size_t len_r, struct passwd **pwd_entry)
|
||
{
|
||
return getpwuid_r (user_id, pwd_r, buf_r, len_r, pwd_entry);
|
||
}
|
||
|
||
/* This is used on HPUX 10.20 */
|
||
template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
|
||
static inline int
|
||
getpwuid_adaptor(int (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
|
||
T_buf *buf_r, T_len len_r),
|
||
uid_t user_id, struct passwd *pwd_r,
|
||
char *buf_r, size_t len_r, struct passwd **pwd_entry)
|
||
{
|
||
return getpwuid_r (user_id, pwd_r, buf_r, len_r);
|
||
}
|
||
|
||
/* This is used on IRIX 5.2. */
|
||
template <typename T_uid, typename T_passwd, typename T_buf, typename T_len>
|
||
static inline int
|
||
getpwuid_adaptor(T_passwd * (*getpwuid_r)(T_uid user_id, T_passwd *pwd_r,
|
||
T_buf *buf_r, T_len len_r),
|
||
uid_t user_id, struct passwd *pwd_r,
|
||
char *buf_r, size_t len_r, struct passwd **pwd_entry)
|
||
{
|
||
*pwd_entry = getpwuid_r (user_id, pwd_r, buf_r, len_r);
|
||
return (*pwd_entry == NULL) ? errno : 0;
|
||
}
|
||
#endif
|
||
|
||
void
|
||
java::lang::Runtime::insertSystemProperties (java::util::Properties *newprops)
|
||
{
|
||
// A convenience define.
|
||
#define SET(Prop,Val) \
|
||
newprops->put(JvNewStringLatin1 (Prop), JvNewStringLatin1 (Val))
|
||
|
||
// A mixture of the Java Product Versioning Specification
|
||
// (introduced in 1.2), and earlier versioning properties.
|
||
SET ("java.version", GCJVERSION);
|
||
SET ("java.vendor", "Free Software Foundation, Inc.");
|
||
SET ("java.vendor.url", "http://gcc.gnu.org/java/");
|
||
SET ("java.class.version", "46.0");
|
||
SET ("java.vm.specification.version", "1.0");
|
||
SET ("java.vm.specification.name", "Java(tm) Virtual Machine Specification");
|
||
SET ("java.vm.specification.vendor", "Sun Microsystems Inc.");
|
||
SET ("java.vm.version", __VERSION__);
|
||
SET ("java.vm.vendor", "Free Software Foundation, Inc.");
|
||
SET ("java.vm.name", "GNU libgcj");
|
||
SET ("java.specification.version", "1.3");
|
||
SET ("java.specification.name", "Java(tm) Platform API Specification");
|
||
SET ("java.specification.vendor", "Sun Microsystems Inc.");
|
||
|
||
char value[100];
|
||
#define NAME "GNU libgcj "
|
||
strcpy (value, NAME);
|
||
strncpy (value + sizeof (NAME) - 1, __VERSION__,
|
||
sizeof(value) - sizeof(NAME));
|
||
value[sizeof (value) - 1] = '\0';
|
||
jstring version = JvNewStringLatin1 (value);
|
||
newprops->put (JvNewStringLatin1 ("java.fullversion"), version);
|
||
newprops->put (JvNewStringLatin1 ("java.vm.info"), version);
|
||
|
||
// This definition is rather arbitrary: we choose $(prefix). In
|
||
// part we do this because most people specify only --prefix and
|
||
// nothing else when installing gcj. Plus, people are free to
|
||
// redefine `java.home' with `-D' if necessary.
|
||
SET ("java.home", PREFIX);
|
||
SET ("gnu.classpath.home", PREFIX);
|
||
// This is set to $(libdir) because we use this to find .security
|
||
// files at runtime.
|
||
char val2[sizeof ("file://") + sizeof (LIBDIR) + 1];
|
||
strcpy (val2, "file://");
|
||
strcat (val2, LIBDIR);
|
||
SET ("gnu.classpath.home.url", val2);
|
||
|
||
SET ("file.encoding", default_file_encoding);
|
||
|
||
#ifdef HAVE_UNAME
|
||
struct utsname u;
|
||
if (! uname (&u))
|
||
{
|
||
SET ("os.name", u.sysname);
|
||
SET ("os.arch", u.machine);
|
||
SET ("os.version", u.release);
|
||
}
|
||
else
|
||
{
|
||
SET ("os.name", "unknown");
|
||
SET ("os.arch", "unknown");
|
||
SET ("os.version", "unknown");
|
||
}
|
||
#endif /* HAVE_UNAME */
|
||
|
||
#ifndef NO_GETUID
|
||
#ifdef HAVE_PWD_H
|
||
uid_t user_id = getuid ();
|
||
struct passwd *pwd_entry;
|
||
|
||
#ifdef HAVE_GETPWUID_R
|
||
struct passwd pwd_r;
|
||
size_t len_r = 200;
|
||
char *buf_r = (char *) _Jv_AllocBytes (len_r);
|
||
|
||
while (buf_r != NULL)
|
||
{
|
||
int r = getpwuid_adaptor (getpwuid_r, user_id, &pwd_r,
|
||
buf_r, len_r, &pwd_entry);
|
||
if (r == 0)
|
||
break;
|
||
else if (r != ERANGE)
|
||
{
|
||
pwd_entry = NULL;
|
||
break;
|
||
}
|
||
len_r *= 2;
|
||
buf_r = (char *) _Jv_AllocBytes (len_r);
|
||
}
|
||
#else
|
||
pwd_entry = getpwuid (user_id);
|
||
#endif /* HAVE_GETPWUID_R */
|
||
|
||
if (pwd_entry != NULL)
|
||
{
|
||
SET ("user.name", pwd_entry->pw_name);
|
||
SET ("user.home", pwd_entry->pw_dir);
|
||
}
|
||
#endif /* HAVE_PWD_H */
|
||
#endif /* NO_GETUID */
|
||
|
||
#ifdef HAVE_GETCWD
|
||
#ifdef HAVE_UNISTD_H
|
||
/* Use getcwd to set "user.dir". */
|
||
int buflen = 250;
|
||
char *buffer = (char *) malloc (buflen);
|
||
while (buffer != NULL)
|
||
{
|
||
if (getcwd (buffer, buflen) != NULL)
|
||
{
|
||
SET ("user.dir", buffer);
|
||
break;
|
||
}
|
||
if (errno != ERANGE)
|
||
break;
|
||
buflen = 2 * buflen;
|
||
buffer = (char *) realloc (buffer, buflen);
|
||
}
|
||
if (buffer != NULL)
|
||
free (buffer);
|
||
#endif /* HAVE_UNISTD_H */
|
||
#endif /* HAVE_GETCWD */
|
||
|
||
// Set user locale properties based on setlocale()
|
||
#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
|
||
// We let the user choose the locale. However, since Java differs
|
||
// from POSIX, we arbitrarily pick LC_MESSAGES as determining the
|
||
// Java locale. We can't use LC_ALL because it might return a full
|
||
// list of all the settings. If we don't have LC_MESSAGES then we
|
||
// just default to `en_US'.
|
||
setlocale (LC_ALL, "");
|
||
char *locale = setlocale (LC_MESSAGES, "");
|
||
if (locale && strlen (locale) >= 2)
|
||
{
|
||
char buf[3];
|
||
buf[2] = '\0';
|
||
// copy the first two chars to user.language
|
||
strncpy (buf, locale, 2);
|
||
SET ("user.language", buf);
|
||
// if the next char is a '_', copy the two after that to user.region
|
||
locale += 2;
|
||
if (locale[0] == '_')
|
||
{
|
||
locale++;
|
||
strncpy (buf, locale, 2);
|
||
SET ("user.region", buf);
|
||
}
|
||
}
|
||
else
|
||
#endif /* HAVE_SETLOCALE and HAVE_LC_MESSAGES */
|
||
{
|
||
SET ("user.language", "en");
|
||
SET ("user.region", "US");
|
||
}
|
||
|
||
// Set some properties according to whatever was compiled in with
|
||
// `-D'.
|
||
for (int i = 0; _Jv_Compiler_Properties[i]; ++i)
|
||
{
|
||
const char *s, *p;
|
||
// Find the `='.
|
||
for (s = p = _Jv_Compiler_Properties[i]; *s && *s != '='; ++s)
|
||
;
|
||
jstring name = JvNewStringLatin1 (p, s - p);
|
||
jstring val = JvNewStringLatin1 (*s == '=' ? s + 1 : s);
|
||
newprops->put (name, val);
|
||
}
|
||
|
||
// Set the system properties from the user's environment.
|
||
#ifndef DISABLE_GETENV_PROPERTIES
|
||
if (_Jv_Environment_Properties)
|
||
{
|
||
size_t i = 0;
|
||
|
||
while (_Jv_Environment_Properties[i].key)
|
||
{
|
||
SET (_Jv_Environment_Properties[i].key,
|
||
_Jv_Environment_Properties[i].value);
|
||
i++;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
if (_Jv_Jar_Class_Path)
|
||
newprops->put(JvNewStringLatin1 ("java.class.path"),
|
||
JvNewStringLatin1 (_Jv_Jar_Class_Path));
|
||
else
|
||
{
|
||
// FIXME: find libgcj.zip and append its path?
|
||
char *classpath = ::getenv("CLASSPATH");
|
||
jstring cp = newprops->getProperty (JvNewStringLatin1("java.class.path"));
|
||
java::lang::StringBuffer *sb = new java::lang::StringBuffer ();
|
||
|
||
if (classpath)
|
||
{
|
||
sb->append (JvNewStringLatin1 (classpath));
|
||
sb->append (_Jv_platform_path_separator);
|
||
}
|
||
if (cp != NULL)
|
||
sb->append (cp);
|
||
else
|
||
sb->append ((jchar) '.');
|
||
|
||
newprops->put(JvNewStringLatin1 ("java.class.path"),
|
||
sb->toString ());
|
||
}
|
||
|
||
// The name used to invoke this process (argv[0] in C).
|
||
SET ("gnu.gcj.progname", _Jv_GetSafeArg (0));
|
||
|
||
// Allow platform specific settings and overrides.
|
||
_Jv_platform_initProperties (newprops);
|
||
|
||
// If java.library.path is set, tell libltdl so we search the new
|
||
// directories as well. FIXME: does this work properly on Windows?
|
||
String *path = newprops->getProperty(JvNewStringLatin1("java.library.path"));
|
||
if (path)
|
||
{
|
||
char *val = (char *) _Jv_Malloc (JvGetStringUTFLength (path) + 1);
|
||
jsize total = JvGetStringUTFRegion (path, 0, path->length(), val);
|
||
val[total] = '\0';
|
||
_Jv_SetDLLSearchPath (val);
|
||
_Jv_Free (val);
|
||
}
|
||
else
|
||
{
|
||
// Set a value for user code to see.
|
||
// FIXME: JDK sets this to the actual path used, including
|
||
// LD_LIBRARY_PATH, etc.
|
||
SET ("java.library.path", "");
|
||
}
|
||
}
|
||
|
||
java::lang::Process *
|
||
java::lang::Runtime::execInternal (jstringArray cmd,
|
||
jstringArray env,
|
||
java::io::File *dir)
|
||
{
|
||
return new java::lang::ConcreteProcess (cmd, env, dir);
|
||
}
|
||
|
||
jint
|
||
java::lang::Runtime::availableProcessors (void)
|
||
{
|
||
// FIXME: find the real value.
|
||
return 1;
|
||
}
|
||
|
||
jstring
|
||
java::lang::Runtime::nativeGetLibname (jstring pathname, jstring libname)
|
||
{
|
||
java::lang::StringBuffer *sb = new java::lang::StringBuffer ();
|
||
sb->append(pathname);
|
||
if (pathname->length() > 0)
|
||
sb->append (_Jv_platform_file_separator);
|
||
|
||
sb->append (JvNewStringLatin1 (_Jv_platform_solib_prefix));
|
||
sb->append(libname);
|
||
sb->append (JvNewStringLatin1 (_Jv_platform_solib_suffix));
|
||
|
||
return sb->toString();
|
||
}
|