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Diffstat (limited to 'libjava/java/lang/natThread.cc')
-rw-r--r-- | libjava/java/lang/natThread.cc | 333 |
1 files changed, 0 insertions, 333 deletions
diff --git a/libjava/java/lang/natThread.cc b/libjava/java/lang/natThread.cc deleted file mode 100644 index 2b9afb53dec..00000000000 --- a/libjava/java/lang/natThread.cc +++ /dev/null @@ -1,333 +0,0 @@ -// natThread.cc - Native part of Thread class. - -/* Copyright (C) 1998, 1999, 2000 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 <stdlib.h> - -#include <gcj/cni.h> -#include <jvm.h> -#include <java-threads.h> - -#include <java/lang/Thread.h> -#include <java/lang/ThreadGroup.h> -#include <java/lang/IllegalArgumentException.h> -#include <java/lang/UnsupportedOperationException.h> -#include <java/lang/IllegalThreadStateException.h> -#include <java/lang/InterruptedException.h> -#include <java/lang/NullPointerException.h> - -#include <jni.h> - -#ifdef ENABLE_JVMPI -#include <jvmpi.h> -#endif - - - -// This structure is used to represent all the data the native side -// needs. An object of this type is assigned to the `data' member of -// the Thread class. -struct natThread -{ - // These are used to interrupt sleep and join calls. We can share a - // condition variable here since it only ever gets notified when the thread - // exits. - _Jv_Mutex_t join_mutex; - _Jv_ConditionVariable_t join_cond; - - // This is private data for the thread system layer. - _Jv_Thread_t *thread; - - // Each thread has its own JNI object. - JNIEnv *jni_env; -}; - -// This is called from the constructor to initialize the native side -// of the Thread. -void -java::lang::Thread::initialize_native (void) -{ - // FIXME: this must interact with the GC in some logical way. At - // the very least we must register a finalizer to clean up. This - // isn't easy to do. If the Thread object resurrects itself in its - // own finalizer then we will need to reinitialize this structure at - // any "interesting" point. - natThread *nt = (natThread *) _Jv_AllocBytes (sizeof (natThread)); - data = reinterpret_cast<jobject> (nt); - _Jv_MutexInit (&nt->join_mutex); - _Jv_CondInit (&nt->join_cond); - _Jv_ThreadInitData (&nt->thread, this); - // FIXME: if JNI_ENV is set we will want to free it. It is - // malloc()d. - nt->jni_env = NULL; -} - -jint -java::lang::Thread::countStackFrames (void) -{ - // NOTE: This is deprecated in JDK 1.2. - JvFail ("java::lang::Thread::countStackFrames unimplemented"); - return 0; -} - -java::lang::Thread * -java::lang::Thread::currentThread (void) -{ - return _Jv_ThreadCurrent (); -} - -void -java::lang::Thread::destroy (void) -{ - // NOTE: This is marked as unimplemented in the JDK 1.2 - // documentation. - JvFail ("java::lang::Thread::destroy unimplemented"); -} - -void -java::lang::Thread::interrupt (void) -{ - natThread *nt = (natThread *) data; - _Jv_ThreadInterrupt (nt->thread); -} - -void -java::lang::Thread::join (jlong millis, jint nanos) -{ - if (millis < 0 || nanos < 0 || nanos > 999999) - _Jv_Throw (new IllegalArgumentException); - - Thread *current = currentThread (); - - // Here `NT' is the native structure for the thread we are trying to join. - natThread *nt = (natThread *) data; - - // Now wait for: (1) an interrupt, (2) the thread to exit, or (3) - // the timeout to occur. - _Jv_MutexLock (&nt->join_mutex); - if (! isAlive ()) - { - _Jv_MutexUnlock (&nt->join_mutex); - return; - } - _Jv_CondWait (&nt->join_cond, &nt->join_mutex, millis, nanos); - _Jv_MutexUnlock (&nt->join_mutex); - - if (current->isInterrupted (true)) - _Jv_Throw (new InterruptedException); -} - -void -java::lang::Thread::resume (void) -{ - checkAccess (); - JvFail ("java::lang::Thread::resume unimplemented"); -} - -void -java::lang::Thread::setPriority (jint newPriority) -{ - checkAccess (); - if (newPriority < MIN_PRIORITY || newPriority > MAX_PRIORITY) - _Jv_Throw (new IllegalArgumentException); - - jint gmax = group->getMaxPriority(); - if (newPriority > gmax) - newPriority = gmax; - - priority = newPriority; - natThread *nt = (natThread *) data; - _Jv_ThreadSetPriority (nt->thread, priority); -} - -void -java::lang::Thread::sleep (jlong millis, jint nanos) -{ - if (millis < 0 || nanos < 0 || nanos > 999999) - _Jv_Throw (new IllegalArgumentException); - - if (millis == 0 && nanos == 0) - ++nanos; - - Thread *current = currentThread (); - - // We use a condition variable to implement sleeping so that an - // interrupt can wake us up. - natThread *nt = (natThread *) current->data; - _Jv_MutexLock (&nt->join_mutex); - _Jv_CondWait (&nt->join_cond, &nt->join_mutex, millis, nanos); - _Jv_MutexUnlock (&nt->join_mutex); - - if (current->isInterrupted (true)) - _Jv_Throw (new InterruptedException); -} - -void -java::lang::Thread::finish_ () -{ - natThread *nt = (natThread *) data; - - group->removeThread (this); - -#ifdef ENABLE_JVMPI - if (_Jv_JVMPI_Notify_THREAD_END) - { - JVMPI_Event event; - - event.event_type = JVMPI_EVENT_THREAD_END; - event.env_id = _Jv_GetCurrentJNIEnv (); - - _Jv_DisableGC (); - (*_Jv_JVMPI_Notify_THREAD_END) (&event); - _Jv_EnableGC (); - } -#endif - - group = NULL; - - // Signal any threads that are waiting to join() us. - _Jv_MutexLock (&nt->join_mutex); - alive_flag = false; - _Jv_CondNotifyAll (&nt->join_cond, &nt->join_mutex); - _Jv_MutexUnlock (&nt->join_mutex); -} - -void -java::lang::Thread::run_ (jobject obj) -{ - java::lang::Thread *thread = (java::lang::Thread *) obj; - try - { -#ifdef ENABLE_JVMPI - if (_Jv_JVMPI_Notify_THREAD_START) - { - JVMPI_Event event; - - jstring thread_name = thread->getName (); - jstring group_name = NULL, parent_name = NULL; - java::lang::ThreadGroup *group = thread->getThreadGroup (); - - if (group) - { - group_name = group->getName (); - group = group->getParent (); - - if (group) - parent_name = group->getName (); - } - - int thread_len = thread_name ? JvGetStringUTFLength (thread_name) : 0; - int group_len = group_name ? JvGetStringUTFLength (group_name) : 0; - int parent_len = parent_name ? JvGetStringUTFLength (parent_name) : 0; - - char thread_chars[thread_len + 1]; - char group_chars[group_len + 1]; - char parent_chars[parent_len + 1]; - - if (thread_name) - JvGetStringUTFRegion (thread_name, 0, - thread_name->length(), thread_chars); - if (group_name) - JvGetStringUTFRegion (group_name, 0, - group_name->length(), group_chars); - if (parent_name) - JvGetStringUTFRegion (parent_name, 0, - parent_name->length(), parent_chars); - - thread_chars[thread_len] = '\0'; - group_chars[group_len] = '\0'; - parent_chars[parent_len] = '\0'; - - event.event_type = JVMPI_EVENT_THREAD_START; - event.env_id = NULL; - event.u.thread_start.thread_name = thread_chars; - event.u.thread_start.group_name = group_chars; - event.u.thread_start.parent_name = parent_chars; - event.u.thread_start.thread_id = (jobjectID) thread; - event.u.thread_start.thread_env_id = _Jv_GetCurrentJNIEnv (); - - _Jv_DisableGC (); - (*_Jv_JVMPI_Notify_THREAD_START) (&event); - _Jv_EnableGC (); - } -#endif - - thread->run (); - } - catch (java::lang::Throwable *t) - { - // Uncaught exceptions are forwarded to the ThreadGroup. If - // this results in an uncaught exception, that is ignored. - try - { - thread->group->uncaughtException (thread, t); - } - catch (java::lang::Throwable *f) - { - // Nothing. - } - } - - thread->finish_ (); -} - -void -java::lang::Thread::start (void) -{ - JvSynchronize sync (this); - - // Its illegal to re-start() a thread, even if its dead. - if (!startable_flag) - _Jv_Throw (new IllegalThreadStateException); - - alive_flag = true; - startable_flag = false; - natThread *nt = (natThread *) data; - _Jv_ThreadStart (this, nt->thread, (_Jv_ThreadStartFunc *) &run_); -} - -void -java::lang::Thread::stop (java::lang::Throwable *) -{ - _Jv_Throw (new UnsupportedOperationException - (JvNewStringLatin1 ("java::lang::Thread::stop unimplemented"))); -} - -void -java::lang::Thread::suspend (void) -{ - checkAccess (); - _Jv_Throw (new UnsupportedOperationException - (JvNewStringLatin1 ("java::lang::Thread::suspend unimplemented"))); -} - -void -java::lang::Thread::yield (void) -{ - _Jv_ThreadYield (); -} - -JNIEnv * -_Jv_GetCurrentJNIEnv () -{ - java::lang::Thread *t = _Jv_ThreadCurrent (); - if (t == NULL) - return NULL; - return ((natThread *) t->data)->jni_env; -} - -void -_Jv_SetCurrentJNIEnv (JNIEnv *env) -{ - java::lang::Thread *t = _Jv_ThreadCurrent (); - JvAssert (t != NULL); - ((natThread *) t->data)->jni_env = env; -} |