/* src/threads/native/threads.c - native threads support
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
+ Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
J. Wenninger, Institut f. Computersprachen - TU Wien
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Stefan Ring
-
- Changes: Christian Thalinger
- Edwin Steiner
-
- $Id: threads.c 4948 2006-05-24 14:11:16Z twisti $
-
*/
# include "threads/native/generic-primitives.h"
#endif
-#include "mm/boehm.h"
+#include "mm/gc-common.h"
#include "mm/memory.h"
+
+#include "native/jni.h"
+#include "native/llni.h"
#include "native/native.h"
#include "native/include/java_lang_Object.h"
+#include "native/include/java_lang_String.h"
#include "native/include/java_lang_Throwable.h"
#include "native/include/java_lang_Thread.h"
-#include "native/include/java_lang_ThreadGroup.h"
-#include "native/include/java_lang_VMThread.h"
+
+#if defined(ENABLE_JAVASE)
+# include "native/include/java_lang_ThreadGroup.h"
+#endif
+
+#if defined(WITH_CLASSPATH_GNU)
+# include "native/include/java_lang_VMThread.h"
+#endif
+
+#include "threads/lock-common.h"
+#include "threads/threads-common.h"
+
#include "threads/native/threads.h"
-#include "toolbox/avl.h"
+
#include "toolbox/logging.h"
+
#include "vm/builtin.h"
#include "vm/exceptions.h"
#include "vm/global.h"
-#include "vm/loader.h"
-#include "vm/options.h"
#include "vm/stringlocal.h"
#include "vm/vm.h"
+
#include "vm/jit/asmpart.h"
+#include "vmcore/options.h"
+
+#if defined(ENABLE_STATISTICS)
+# include "vmcore/statistics.h"
+#endif
+
#if !defined(__DARWIN__)
# if defined(__LINUX__)
# define GC_LINUX_THREADS
# define GC_IRIX_THREADS
# endif
# include <semaphore.h>
-# include "boehm-gc/include/gc.h"
+# if defined(ENABLE_GC_BOEHM)
+# include "mm/boehm-gc/include/gc.h"
+# endif
#endif
+#if defined(ENABLE_JVMTI)
+#include "native/jvmti/cacaodbg.h"
+#endif
#if defined(__DARWIN__)
/* Darwin has no working semaphore implementation. This one is taken
#define STOPWORLD_FROM_GC 1
#define STOPWORLD_FROM_CLASS_NUMBERING 2
-#define THREADS_INITIAL_TABLE_SIZE 8
-
/* startupinfo *****************************************************************
/* prototypes *****************************************************************/
-static void threads_table_init(void);
-static s4 threads_table_add(threadobject *thread);
-static void threads_table_remove(threadobject *thread);
static void threads_calc_absolute_time(struct timespec *tm, s8 millis, s4 nanos);
-#if !defined(NDEBUG)
-static void threads_table_dump(FILE *file);
-#endif
/******************************************************************************/
/* GLOBAL VARIABLES */
/******************************************************************************/
-/* the main thread */
-threadobject *mainthreadobj;
+static methodinfo *method_thread_init;
/* the thread object of the current thread */
/* This is either a thread-local variable defined with __thread, or */
pthread_key_t threads_current_threadobject_key;
#endif
-/* global threads table */
-static threads_table_t threads_table;
-
-/* global compiler mutex */
-static pthread_mutex_rec_t compiler_mutex;
-
-/* global mutex for changing the thread list */
-static pthread_mutex_t threadlistlock;
+/* global mutex for the threads table */
+static pthread_mutex_t mutex_threads_list;
/* global mutex for stop-the-world */
static pthread_mutex_t stopworldlock;
+/* global mutex and condition for joining threads on exit */
+static pthread_mutex_t mutex_join;
+static pthread_cond_t cond_join;
+
+/* XXX We disable that whole bunch of code until we have the exact-GC
+ running. */
+
+#if 0
+
/* this is one of the STOPWORLD_FROM_ constants, telling why the world is */
/* being stopped */
static volatile int stopworldwhere;
static pthread_cond_t suspend_cond = PTHREAD_COND_INITIALIZER;
#endif
-static pthread_attr_t threadattr;
+#endif /* 0 */
/* mutexes used by the fake atomic instructions */
#if defined(USE_FAKE_ATOMIC_INSTRUCTIONS)
#endif
-/******************************************************************************/
-/* Recursive Mutex Implementation for Darwin */
-/******************************************************************************/
-
-#if defined(MUTEXSIM)
-
-/* We need this for older MacOSX (10.1.x) */
-
-void pthread_mutex_init_rec(pthread_mutex_rec_t *m)
-{
- pthread_mutex_init(&m->mutex, NULL);
- m->count = 0;
-}
-
-void pthread_mutex_destroy_rec(pthread_mutex_rec_t *m)
-{
- pthread_mutex_destroy(&m->mutex);
-}
-
-void pthread_mutex_lock_rec(pthread_mutex_rec_t *m)
-{
- for (;;) {
- if (!m->count)
- {
- pthread_mutex_lock(&m->mutex);
- m->owner = pthread_self();
- m->count++;
- break;
- }
- else {
- if (m->owner != pthread_self()) {
- pthread_mutex_lock(&m->mutex);
- }
- else {
- m->count++;
- break;
- }
- }
- }
-}
-
-void pthread_mutex_unlock_rec(pthread_mutex_rec_t *m)
-{
- if (!--m->count)
- pthread_mutex_unlock(&m->mutex);
-}
-
-#endif /* defined(MUTEXSIM) */
-
-
/* threads_sem_init ************************************************************
Initialize a semaphore. Checks against errors and interruptions.
}
-/* threads_set_thread_priority *************************************************
-
- Set the priority of the given thread.
-
- IN:
- tid..........thread id
- priority.....priority to set
-
-******************************************************************************/
-
-static void threads_set_thread_priority(pthread_t tid, int priority)
-{
- struct sched_param schedp;
- int policy;
-
- pthread_getschedparam(tid, &policy, &schedp);
- schedp.sched_priority = priority;
- pthread_setschedparam(tid, policy, &schedp);
-}
-
-
-/* compiler_lock ***************************************************************
-
- Enter the compiler lock.
-
-******************************************************************************/
-
-void compiler_lock(void)
-{
- pthread_mutex_lock_rec(&compiler_mutex);
-}
-
-
-/* compiler_unlock *************************************************************
-
- Release the compiler lock.
-
-******************************************************************************/
-
-void compiler_unlock(void)
-{
- pthread_mutex_unlock_rec(&compiler_mutex);
-}
-
-
/* lock_stopworld **************************************************************
Enter the stopworld lock, specifying why the world shall be stopped.
void lock_stopworld(int where)
{
pthread_mutex_lock(&stopworldlock);
- stopworldwhere = where;
+/* stopworldwhere = where; */
}
void unlock_stopworld(void)
{
- stopworldwhere = 0;
+/* stopworldwhere = 0; */
pthread_mutex_unlock(&stopworldlock);
}
+/* XXX We disable that whole bunch of code until we have the exact-GC
+ running. */
+
+#if 0
+
#if !defined(__DARWIN__)
/* Caller must hold threadlistlock */
-static int threads_cast_sendsignals(int sig, int count)
+static s4 threads_cast_sendsignals(s4 sig)
{
- /* Count threads */
- threadobject *tobj = mainthreadobj;
- threadobject *self = THREADOBJECT;
+ threadobject *t;
+ threadobject *self;
+ s4 count;
- if (count == 0) {
- do {
- count++;
- tobj = tobj->next;
- } while (tobj != mainthreadobj);
- }
+ self = THREADOBJECT;
- assert(tobj == mainthreadobj);
+ /* iterate over all started threads */
- do {
- if (tobj != self)
- pthread_kill(tobj->tid, sig);
- tobj = tobj->next;
- } while (tobj != mainthreadobj);
+ count = 0;
+
+ for (t = threads_list_first(); t != NULL; t = threads_list_next(t)) {
+ /* don't send the signal to ourself */
+
+ if (t == self)
+ continue;
+
+ /* don't send the signal to NEW threads (because they are not
+ completely initialized) */
+
+ if (t->state == THREAD_STATE_NEW)
+ continue;
+
+ /* send the signal */
- return count - 1;
+ pthread_kill(t->tid, sig);
+
+ /* increase threads count */
+
+ count++;
+ }
+
+ return count;
}
#else
do {
if (tobj != self)
{
- thread_state_flavor_t flavor = PPC_THREAD_STATE;
- mach_msg_type_number_t thread_state_count = PPC_THREAD_STATE_COUNT;
+ thread_state_flavor_t flavor = MACHINE_THREAD_STATE;
+ mach_msg_type_number_t thread_state_count = MACHINE_THREAD_STATE_COUNT;
+#if defined(__I386__)
+ i386_thread_state_t thread_state;
+#else
ppc_thread_state_t thread_state;
+#endif
mach_port_t thread = tobj->mach_thread;
kern_return_t r;
r = thread_suspend(thread);
- if (r != KERN_SUCCESS) {
- log_text("thread_suspend failed");
- assert(0);
- }
-
- r = thread_get_state(thread, flavor,
- (natural_t*)&thread_state, &thread_state_count);
- if (r != KERN_SUCCESS) {
- log_text("thread_get_state failed");
- assert(0);
- }
-
- thread_restartcriticalsection(&thread_state);
-
- r = thread_set_state(thread, flavor,
- (natural_t*)&thread_state, thread_state_count);
- if (r != KERN_SUCCESS) {
- log_text("thread_set_state failed");
- assert(0);
- }
+
+ if (r != KERN_SUCCESS)
+ vm_abort("thread_suspend failed");
+
+ r = thread_get_state(thread, flavor, (natural_t *) &thread_state,
+ &thread_state_count);
+
+ if (r != KERN_SUCCESS)
+ vm_abort("thread_get_state failed");
+
+ md_critical_section_restart((ucontext_t *) &thread_state);
+
+ r = thread_set_state(thread, flavor, (natural_t *) &thread_state,
+ thread_state_count);
+
+ if (r != KERN_SUCCESS)
+ vm_abort("thread_set_state failed");
}
+
tobj = tobj->next;
} while (tobj != mainthreadobj);
}
kern_return_t r;
r = thread_resume(thread);
- if (r != KERN_SUCCESS) {
- log_text("thread_resume failed");
- assert(0);
- }
+
+ if (r != KERN_SUCCESS)
+ vm_abort("thread_resume failed");
}
+
tobj = tobj->next;
} while (tobj != mainthreadobj);
}
}
#endif
+#if !defined(DISABLE_GC)
+
void threads_cast_stopworld(void)
{
- int count, i;
+#if !defined(__DARWIN__) && !defined(__CYGWIN__)
+ s4 count, i;
+#endif
+
lock_stopworld(STOPWORLD_FROM_CLASS_NUMBERING);
- pthread_mutex_lock(&threadlistlock);
+
+ /* lock the threads lists */
+
+ threads_list_lock();
+
#if defined(__DARWIN__)
threads_cast_darwinstop();
+#elif defined(__CYGWIN__)
+ /* TODO */
+ assert(0);
#else
- count = threads_cast_sendsignals(GC_signum1(), 0);
- for (i=0; i<count; i++)
+ /* send all threads the suspend signal */
+
+ count = threads_cast_sendsignals(GC_signum1());
+
+ /* wait for all threads signaled to suspend */
+
+ for (i = 0; i < count; i++)
threads_sem_wait(&suspend_ack);
#endif
- pthread_mutex_unlock(&threadlistlock);
+
+ /* ATTENTION: Don't unlock the threads-lists here so that
+ non-signaled NEW threads can't change their state and execute
+ code. */
}
+
void threads_cast_startworld(void)
{
- pthread_mutex_lock(&threadlistlock);
#if defined(__DARWIN__)
threads_cast_darwinresume();
#elif defined(__MIPS__)
threads_cast_irixresume();
+#elif defined(__CYGWIN__)
+ /* TODO */
+ assert(0);
#else
- threads_cast_sendsignals(GC_signum2(), -1);
+ (void) threads_cast_sendsignals(GC_signum2());
#endif
- pthread_mutex_unlock(&threadlistlock);
+
+ /* unlock the threads lists */
+
+ threads_list_unlock();
+
unlock_stopworld();
}
+
#if !defined(__DARWIN__)
-static void threads_sigsuspend_handler(ucontext_t *ctx)
+static void threads_sigsuspend_handler(ucontext_t *_uc)
{
int sig;
sigset_t sigs;
/* XXX TWISTI: this is just a quick hack */
#if defined(ENABLE_JIT)
- thread_restartcriticalsection(ctx);
+ md_critical_section_restart(_uc);
#endif
/* Do as Boehm does. On IRIX a condition variable is used for wake-up
threads_sem_post(&suspend_ack);
pthread_cond_wait(&suspend_cond, &suspend_ack_lock);
pthread_mutex_unlock(&suspend_ack_lock);
+#elif defined(__CYGWIN__)
+ /* TODO */
+ assert(0);
#else
threads_sem_post(&suspend_ack);
#endif
}
+#endif
+
+
/* This function is called from Boehm GC code. */
-int cacao_suspendhandler(ucontext_t *ctx)
+int cacao_suspendhandler(ucontext_t *_uc)
{
if (stopworldwhere != STOPWORLD_FROM_CLASS_NUMBERING)
return 0;
- threads_sigsuspend_handler(ctx);
+ threads_sigsuspend_handler(_uc);
return 1;
}
-#endif
+
+#endif /* DISABLE_GC */
+
+#endif /* 0 */
+
/* threads_set_current_threadobject ********************************************
*******************************************************************************/
-static void threads_set_current_threadobject(threadobject *thread)
+void threads_set_current_threadobject(threadobject *thread)
{
#if !defined(HAVE___THREAD)
- pthread_setspecific(threads_current_threadobject_key, thread);
+ if (pthread_setspecific(threads_current_threadobject_key, thread) != 0)
+ vm_abort("threads_set_current_threadobject: pthread_setspecific failed: %s", strerror(errno));
#else
threads_current_threadobject = thread;
#endif
}
+/* threads_impl_thread_new *****************************************************
+
+ Initialize implementation fields of a threadobject.
+
+ IN:
+ t....the threadobject
+
+*******************************************************************************/
+
+void threads_impl_thread_new(threadobject *t)
+{
+ /* get the pthread id */
+
+ t->tid = pthread_self();
+
+ /* initialize the mutex and the condition */
+
+ pthread_mutex_init(&(t->waitmutex), NULL);
+ pthread_cond_init(&(t->waitcond), NULL);
+
+#if defined(ENABLE_DEBUG_FILTER)
+ /* Initialize filter counters */
+ t->filterverbosecallctr[0] = 0;
+ t->filterverbosecallctr[1] = 0;
+#endif
+
+#if !defined(NDEBUG)
+ t->tracejavacallindent = 0;
+ t->tracejavacallcount = 0;
+#endif
+}
+
+
+/* threads_impl_thread_free ****************************************************
+
+ Cleanup thread stuff.
+
+ IN:
+ t....the threadobject
+
+*******************************************************************************/
+
+void threads_impl_thread_free(threadobject *t)
+{
+ /* destroy the mutex and the condition */
+
+ if (pthread_mutex_destroy(&(t->waitmutex)) != 0)
+ vm_abort("threads_impl_thread_free: pthread_mutex_destroy failed: %s",
+ strerror(errno));
+
+ if (pthread_cond_destroy(&(t->waitcond)) != 0)
+ vm_abort("threads_impl_thread_free: pthread_cond_destroy failed: %s",
+ strerror(errno));
+}
+
+
/* threads_get_current_threadobject ********************************************
Return the threadobject of the current thread.
RETURN VALUE:
- the current threadobject * (an instance of java.lang.VMThread)
+ the current threadobject * (an instance of java.lang.Thread)
*******************************************************************************/
}
-/* threads_preinit *************************************************************
+/* threads_impl_preinit ********************************************************
Do some early initialization of stuff required.
+ ATTENTION: Do NOT use any Java heap allocation here, as gc_init()
+ is called AFTER this function!
+
*******************************************************************************/
-void threads_preinit(void)
+void threads_impl_preinit(void)
{
-#ifndef MUTEXSIM
- pthread_mutexattr_t mutexattr;
- pthread_mutexattr_init(&mutexattr);
- pthread_mutexattr_settype(&mutexattr, PTHREAD_MUTEX_RECURSIVE);
- pthread_mutex_init(&compiler_mutex, &mutexattr);
- pthread_mutexattr_destroy(&mutexattr);
-#else
- pthread_mutex_init_rec(&compiler_mutex);
-#endif
-
- pthread_mutex_init(&threadlistlock, NULL);
pthread_mutex_init(&stopworldlock, NULL);
- /* Allocate something so the garbage collector's signal handlers
- are installed. */
- heap_allocate(1, false, NULL);
+ /* initialize exit mutex and condition (on exit we join all
+ threads) */
+
+ pthread_mutex_init(&mutex_join, NULL);
+ pthread_cond_init(&cond_join, NULL);
+
+ /* initialize the threads-list mutex */
+
+ pthread_mutex_init(&mutex_threads_list, NULL);
- mainthreadobj = NEW(threadobject);
- mainthreadobj->tid = pthread_self();
- mainthreadobj->index = 1;
- mainthreadobj->thinlock = lock_pre_compute_thinlock(mainthreadobj->index);
-
#if !defined(HAVE___THREAD)
pthread_key_create(&threads_current_threadobject_key, NULL);
#endif
- threads_set_current_threadobject(mainthreadobj);
- threads_sem_init(&suspend_ack, 0, 0);
+/* threads_sem_init(&suspend_ack, 0, 0); */
+}
+
+
+/* threads_list_lock ***********************************************************
+
+ Enter the threads table mutex.
+
+ NOTE: We need this function as we can't use an internal lock for
+ the threads lists because the thread's lock is initialized in
+ threads_table_add (when we have the thread index), but we
+ already need the lock at the entry of the function.
+
+*******************************************************************************/
+
+void threads_list_lock(void)
+{
+ if (pthread_mutex_lock(&mutex_threads_list) != 0)
+ vm_abort("threads_list_lock: pthread_mutex_lock failed: %s",
+ strerror(errno));
+}
+
+
+/* threads_list_unlock *********************************************************
+
+ Leave the threads list mutex.
+
+*******************************************************************************/
+
+void threads_list_unlock(void)
+{
+ if (pthread_mutex_unlock(&mutex_threads_list) != 0)
+ vm_abort("threads_list_unlock: pthread_mutex_unlock failed: %s",
+ strerror(errno));
+}
+
+
+/* threads_mutex_join_lock *****************************************************
+
+ Enter the join mutex.
+
+*******************************************************************************/
+
+void threads_mutex_join_lock(void)
+{
+ if (pthread_mutex_lock(&mutex_join) != 0)
+ vm_abort("threads_mutex_join_lock: pthread_mutex_lock failed: %s",
+ strerror(errno));
+}
- /* initialize the threads table */
- threads_table_init();
+/* threads_mutex_join_unlock ***************************************************
- /* initialize subsystems */
+ Leave the join mutex.
- lock_init();
+*******************************************************************************/
- critical_init();
+void threads_mutex_join_unlock(void)
+{
+ if (pthread_mutex_unlock(&mutex_join) != 0)
+ vm_abort("threads_mutex_join_unlock: pthread_mutex_unlock failed: %s",
+ strerror(errno));
}
bool threads_init(void)
{
- java_lang_String *threadname;
- java_lang_Thread *mainthread;
- java_lang_ThreadGroup *threadgroup;
- threadobject *tempthread;
- methodinfo *method;
-
- tempthread = mainthreadobj;
+ threadobject *mainthread;
+ java_handle_t *threadname;
+ java_lang_Thread *t;
+ java_handle_t *o;
- /* XXX We have to find a new way to free lock records */
- /* with the new locking algorithm. */
- /* lock_record_free_pools(mainthreadobj->ee.lockrecordpools); */
-
- /* This is kinda tricky, we grow the java.lang.Thread object so we
- can keep the execution environment there. No Thread object must
- have been created at an earlier time. */
+#if defined(ENABLE_JAVASE)
+ java_lang_ThreadGroup *threadgroup;
+ methodinfo *m;
+#endif
- class_java_lang_VMThread->instancesize = sizeof(threadobject);
+#if defined(WITH_CLASSPATH_GNU)
+ java_lang_VMThread *vmt;
+#endif
- /* create a VMThread */
+ pthread_attr_t attr;
- mainthreadobj = (threadobject *) builtin_new(class_java_lang_VMThread);
+ /* get methods we need in this file */
+
+#if defined(WITH_CLASSPATH_GNU)
+ method_thread_init =
+ class_resolveclassmethod(class_java_lang_Thread,
+ utf_init,
+ utf_new_char("(Ljava/lang/VMThread;Ljava/lang/String;IZ)V"),
+ class_java_lang_Thread,
+ true);
+#elif defined(WITH_CLASSPATH_SUN)
+ method_thread_init =
+ class_resolveclassmethod(class_java_lang_Thread,
+ utf_init,
+ utf_new_char("(Ljava/lang/String;)V"),
+ class_java_lang_Thread,
+ true);
+#elif defined(WITH_CLASSPATH_CLDC1_1)
+ method_thread_init =
+ class_resolveclassmethod(class_java_lang_Thread,
+ utf_init,
+ utf_new_char("(Ljava/lang/String;)V"),
+ class_java_lang_Thread,
+ true);
+#else
+# error unknown classpath configuration
+#endif
- if (mainthreadobj == NULL)
+ if (method_thread_init == NULL)
return false;
- FREE(tempthread, threadobject);
+ /* Get the main-thread (NOTE: The main threads is always the first
+ thread in the list). */
+
+ mainthread = threads_list_first();
- threads_init_threadobject(&mainthreadobj->o);
+ /* create a java.lang.Thread for the main thread */
- threads_set_current_threadobject(mainthreadobj);
+ t = (java_lang_Thread *) builtin_new(class_java_lang_Thread);
- lock_init_execution_env(mainthreadobj);
+ if (t == NULL)
+ return false;
- mainthreadobj->next = mainthreadobj;
- mainthreadobj->prev = mainthreadobj;
+ /* set the object in the internal data structure */
- threads_table_add(mainthreadobj);
+ mainthread->object = t;
#if defined(ENABLE_INTRP)
/* create interpreter stack */
if (opt_intrp) {
MSET(intrp_main_stack, 0, u1, opt_stacksize);
- mainthreadobj->_global_sp = intrp_main_stack + opt_stacksize;
+ mainthread->_global_sp = (Cell*) (intrp_main_stack + opt_stacksize);
}
#endif
threadname = javastring_new(utf_new_char("main"));
+#if defined(ENABLE_JAVASE)
/* allocate and init ThreadGroup */
threadgroup = (java_lang_ThreadGroup *)
native_new_and_init(class_java_lang_ThreadGroup);
- if (!threadgroup)
- throw_exception_exit();
+ if (threadgroup == NULL)
+ return false;
+#endif
- /* create a Thread */
+#if defined(WITH_CLASSPATH_GNU)
+ /* create a java.lang.VMThread for the main thread */
- mainthread = (java_lang_Thread *) builtin_new(class_java_lang_Thread);
+ vmt = (java_lang_VMThread *) builtin_new(class_java_lang_VMThread);
- if (mainthread == NULL)
- throw_exception_exit();
+ if (vmt == NULL)
+ return false;
- mainthreadobj->o.thread = mainthread;
+ /* set the thread */
- /* call Thread.<init>(Ljava/lang/VMThread;Ljava/lang/String;IZ)V */
+ LLNI_field_set_ref(vmt, thread, t);
+ LLNI_field_set_val(vmt, vmdata, (java_lang_Object *) mainthread);
- method = class_resolveclassmethod(class_java_lang_Thread,
- utf_init,
- utf_new_char("(Ljava/lang/VMThread;Ljava/lang/String;IZ)V"),
- class_java_lang_Thread,
- true);
+ /* call java.lang.Thread.<init>(Ljava/lang/VMThread;Ljava/lang/String;IZ)V */
+ o = (java_handle_t *) t;
- if (method == NULL)
- return false;
+ (void) vm_call_method(method_thread_init, o, vmt, threadname, NORM_PRIORITY,
+ false);
- (void) vm_call_method(method, (java_objectheader *) mainthread,
- mainthreadobj, threadname, 5, false);
+#elif defined(WITH_CLASSPATH_SUN)
- if (*exceptionptr)
- return false;
+ /* We trick java.lang.Thread.<init>, which sets the priority of
+ the current thread to the parent's one. */
- mainthread->group = threadgroup;
+ t->priority = NORM_PRIORITY;
- /* add mainthread to ThreadGroup */
+ /* Call java.lang.Thread.<init>(Ljava/lang/String;)V */
- method = class_resolveclassmethod(class_java_lang_ThreadGroup,
- utf_new_char("addThread"),
- utf_new_char("(Ljava/lang/Thread;)V"),
- class_java_lang_ThreadGroup,
- true);
+ o = (java_object_t *) t;
- if (method == NULL)
- return false;
+ (void) vm_call_method(method_thread_init, o, threadname);
- (void) vm_call_method(method, (java_objectheader *) threadgroup,
- mainthread);
+#elif defined(WITH_CLASSPATH_CLDC1_1)
- if (*exceptionptr)
- return false;
+ /* set the thread */
- threads_set_thread_priority(pthread_self(), 5);
+ t->vm_thread = (java_lang_Object *) mainthread;
- /* initialize the thread attribute object */
+ /* call public Thread(String name) */
- if (pthread_attr_init(&threadattr)) {
- log_println("pthread_attr_init failed: %s", strerror(errno));
- return false;
- }
+ o = (java_handle_t *) t;
- pthread_attr_setdetachstate(&threadattr, PTHREAD_CREATE_DETACHED);
+ (void) vm_call_method(method_thread_init, o, threadname);
+#else
+# error unknown classpath configuration
+#endif
- /* everything's ok */
+ if (exceptions_get_exception())
+ return false;
- return true;
-}
+#if defined(ENABLE_JAVASE)
+ LLNI_field_set_ref(t, group, threadgroup);
+# if defined(WITH_CLASSPATH_GNU)
+ /* add main thread to java.lang.ThreadGroup */
-/* threads_table_init *********************************************************
+ m = class_resolveclassmethod(class_java_lang_ThreadGroup,
+ utf_addThread,
+ utf_java_lang_Thread__V,
+ class_java_lang_ThreadGroup,
+ true);
- Initialize the global threads table.
+ o = (java_handle_t *) threadgroup;
-******************************************************************************/
+ (void) vm_call_method(m, o, t);
-static void threads_table_init(void)
-{
- s4 size;
- s4 i;
+ if (exceptions_get_exception())
+ return false;
+# else
+# warning Do not know what to do here
+# endif
+#endif
- size = THREADS_INITIAL_TABLE_SIZE;
+ threads_set_thread_priority(pthread_self(), NORM_PRIORITY);
+
+ /* initialize the thread attribute object */
- threads_table.size = size;
- threads_table.table = MNEW(threads_table_entry_t, size);
+ if (pthread_attr_init(&attr) != 0)
+ vm_abort("threads_init: pthread_attr_init failed: %s", strerror(errno));
- /* link the entries in a freelist */
+ if (pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0)
+ vm_abort("threads_init: pthread_attr_setdetachstate failed: %s",
+ strerror(errno));
- for (i=0; i<size; ++i) {
- threads_table.table[i].nextfree = i+1;
+#if !defined(NDEBUG)
+ if (opt_verbosethreads) {
+ printf("[Starting thread ");
+ threads_thread_print_info(mainthread);
+ printf("]\n");
}
+#endif
- /* terminate the freelist */
+ /* everything's ok */
- threads_table.table[size-1].nextfree = 0; /* index 0 is never free */
+ return true;
}
-/* threads_table_add **********************************************************
+/* threads_startup_thread ******************************************************
- Add a thread to the global threads table. The index is entered in the
- threadobject. The thinlock value for the thread is pre-computed.
+ Thread startup function called by pthread_create.
- IN:
- thread............the thread to add
+ Thread which have a startup.function != NULL are marked as internal
+ threads. All other threads are threated as normal Java threads.
- RETURN VALUE:
- The table index for the newly added thread. This value has also been
- entered in the threadobject.
+ NOTE: This function is not called directly by pthread_create. The Boehm GC
+ inserts its own GC_start_routine in between, which then calls
+ threads_startup.
- PRE-CONDITION:
- The caller must hold the threadlistlock!
+ IN:
+ arg..........the argument passed to pthread_create, ie. a pointer to
+ a startupinfo struct. CAUTION: When the `psem` semaphore
+ is posted, the startupinfo struct becomes invalid! (It
+ is allocated on the stack of threads_start_thread.)
******************************************************************************/
-static s4 threads_table_add(threadobject *thread)
+static void *threads_startup_thread(void *arg)
{
- s4 index;
- s4 oldsize;
- s4 newsize;
- s4 i;
-
- /* table[0] serves as the head of the freelist */
+ startupinfo *startup;
+ threadobject *thread;
+#if defined(WITH_CLASSPATH_GNU)
+ java_lang_VMThread *vmt;
+#endif
+ sem_t *psem;
+ classinfo *c;
+ methodinfo *m;
+ java_handle_t *o;
+ functionptr function;
- index = threads_table.table[0].nextfree;
+#if defined(ENABLE_INTRP)
+ u1 *intrp_thread_stack;
- /* if we got a free index, use it */
+ /* create interpreter stack */
- if (index) {
-got_an_index:
- threads_table.table[0].nextfree = threads_table.table[index].nextfree;
- threads_table.table[index].thread = thread;
- thread->index = index;
- thread->thinlock = lock_pre_compute_thinlock(index);
- return index;
+ if (opt_intrp) {
+ intrp_thread_stack = GCMNEW(u1, opt_stacksize);
+ MSET(intrp_thread_stack, 0, u1, opt_stacksize);
}
+ else
+ intrp_thread_stack = NULL;
+#endif
- /* we must grow the table */
+ /* get passed startupinfo structure and the values in there */
+
+ startup = arg;
+
+ thread = startup->thread;
+ function = startup->function;
+ psem = startup->psem;
- oldsize = threads_table.size;
- newsize = oldsize * 2;
+ /* Seems like we've encountered a situation where thread->tid was
+ not set by pthread_create. We alleviate this problem by waiting
+ for pthread_create to return. */
- threads_table.table = MREALLOC(threads_table.table, threads_table_entry_t,
- oldsize, newsize);
- threads_table.size = newsize;
+ threads_sem_wait(startup->psem_first);
+
+#if defined(__DARWIN__)
+ thread->mach_thread = mach_thread_self();
+#endif
- /* link the new entries to a free list */
+ /* store the internal thread data-structure in the TSD */
+
+ threads_set_current_threadobject(thread);
+
+ /* set our priority */
+
+ threads_set_thread_priority(thread->tid, LLNI_field_direct(thread->object, priority));
+
+ /* thread is completely initialized */
+
+ threads_thread_state_runnable(thread);
+
+ /* tell threads_startup_thread that we registered ourselves */
+ /* CAUTION: *startup becomes invalid with this! */
+
+ startup = NULL;
+ threads_sem_post(psem);
+
+#if defined(ENABLE_INTRP)
+ /* set interpreter stack */
+
+ if (opt_intrp)
+ thread->_global_sp = (Cell *) (intrp_thread_stack + opt_stacksize);
+#endif
+
+#if defined(ENABLE_JVMTI)
+ /* fire thread start event */
- for (i=oldsize; i<newsize; ++i) {
- threads_table.table[i].nextfree = i+1;
+ if (jvmti)
+ jvmti_ThreadStartEnd(JVMTI_EVENT_THREAD_START);
+#endif
+
+#if !defined(NDEBUG)
+ if (opt_verbosethreads) {
+ printf("[Starting thread ");
+ threads_thread_print_info(thread);
+ printf("]\n");
}
+#endif
- /* terminate the freelist */
+ /* find and run the Thread.run()V method if no other function was passed */
- threads_table.table[newsize-1].nextfree = 0; /* index 0 is never free */
+ if (function == NULL) {
+#if defined(WITH_CLASSPATH_GNU)
+ /* We need to start the run method of
+ java.lang.VMThread. Since this is a final class, we can use
+ the class object directly. */
+
+ c = class_java_lang_VMThread;
+#elif defined(WITH_CLASSPATH_SUN) || defined(WITH_CLASSPATH_CLDC1_1)
+ c = thread->object->header.vftbl->class;
+#else
+# error unknown classpath configuration
+#endif
- /* use the first of the new entries */
+ m = class_resolveclassmethod(c, utf_run, utf_void__void, c, true);
- index = oldsize;
- goto got_an_index;
-}
+ if (m == NULL)
+ vm_abort("threads_startup_thread: run() method not found in class");
+ /* set ThreadMXBean variables */
-/* threads_table_remove *******************************************************
+ _Jv_jvm->java_lang_management_ThreadMXBean_ThreadCount++;
+ _Jv_jvm->java_lang_management_ThreadMXBean_TotalStartedThreadCount++;
- Remove a thread from the global threads table.
+ if (_Jv_jvm->java_lang_management_ThreadMXBean_ThreadCount >
+ _Jv_jvm->java_lang_management_ThreadMXBean_PeakThreadCount)
+ _Jv_jvm->java_lang_management_ThreadMXBean_PeakThreadCount =
+ _Jv_jvm->java_lang_management_ThreadMXBean_ThreadCount;
- IN:
- thread............the thread to remove
+#if defined(WITH_CLASSPATH_GNU)
+ /* we need to start the run method of java.lang.VMThread */
- PRE-CONDITION:
- The caller must hold the threadlistlock!
+ vmt = (java_lang_VMThread *) LLNI_field_direct(thread->object, vmThread);
+ o = (java_handle_t *) vmt;
-******************************************************************************/
+#elif defined(WITH_CLASSPATH_SUN) || defined(WITH_CLASSPATH_CLDC1_1)
+ o = (java_handle_t *) thread->object;
+#else
+# error unknown classpath configuration
+#endif
-static void threads_table_remove(threadobject *thread)
-{
- s4 index;
+ /* run the thread */
+
+ (void) vm_call_method(m, o);
+ }
+ else {
+ /* set ThreadMXBean variables */
+
+ _Jv_jvm->java_lang_management_ThreadMXBean_ThreadCount++;
+ _Jv_jvm->java_lang_management_ThreadMXBean_TotalStartedThreadCount++;
- index = thread->index;
+ if (_Jv_jvm->java_lang_management_ThreadMXBean_ThreadCount >
+ _Jv_jvm->java_lang_management_ThreadMXBean_PeakThreadCount)
+ _Jv_jvm->java_lang_management_ThreadMXBean_PeakThreadCount =
+ _Jv_jvm->java_lang_management_ThreadMXBean_ThreadCount;
- /* put the index into the freelist */
+ /* call passed function, e.g. finalizer_thread */
- threads_table.table[index] = threads_table.table[0];
- threads_table.table[0].nextfree = index;
+ (function)();
+ }
- /* delete the index in the threadobject to discover bugs */
#if !defined(NDEBUG)
- thread->index = 0;
+ if (opt_verbosethreads) {
+ printf("[Stopping thread ");
+ threads_thread_print_info(thread);
+ printf("]\n");
+ }
+#endif
+
+#if defined(ENABLE_JVMTI)
+ /* fire thread end event */
+
+ if (jvmti)
+ jvmti_ThreadStartEnd(JVMTI_EVENT_THREAD_END);
#endif
+
+ /* We ignore the return value. */
+
+ (void) threads_detach_thread(thread);
+
+ /* set ThreadMXBean variables */
+
+ _Jv_jvm->java_lang_management_ThreadMXBean_ThreadCount--;
+
+ return NULL;
}
-/* threads_init_threadobject **************************************************
- Initialize implementation fields of a java.lang.VMThread.
+/* threads_impl_thread_start ***************************************************
+
+ Start a thread in the JVM. Both (vm internal and java) thread
+ objects exist.
IN:
- t............the java.lang.VMThread
+ thread....the thread object
+ f.........function to run in the new thread. NULL means that the
+ "run" method of the object `t` should be called
******************************************************************************/
-void threads_init_threadobject(java_lang_VMThread *t)
+void threads_impl_thread_start(threadobject *thread, functionptr f)
{
- threadobject *thread = (threadobject*) t;
+ sem_t sem;
+ sem_t sem_first;
+ pthread_attr_t attr;
+ startupinfo startup;
+ int ret;
- thread->tid = pthread_self();
+ /* fill startupinfo structure passed by pthread_create to
+ * threads_startup_thread */
- thread->index = 0;
+ startup.thread = thread;
+ startup.function = f; /* maybe we don't call Thread.run()V */
+ startup.psem = &sem;
+ startup.psem_first = &sem_first;
- /* TODO destroy all those things */
- pthread_mutex_init(&(thread->joinmutex), NULL);
- pthread_cond_init(&(thread->joincond), NULL);
+ threads_sem_init(&sem, 0, 0);
+ threads_sem_init(&sem_first, 0, 0);
- pthread_mutex_init(&(thread->waitmutex), NULL);
- pthread_cond_init(&(thread->waitcond), NULL);
+ /* initialize thread attributes */
- thread->interrupted = false;
- thread->signaled = false;
- thread->sleeping = false;
-}
+ if (pthread_attr_init(&attr) != 0)
+ vm_abort("threads_impl_thread_start: pthread_attr_init failed: %s",
+ strerror(errno));
+ if (pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0)
+ vm_abort("threads_impl_thread_start: pthread_attr_setdetachstate failed: %s",
+ strerror(errno));
-/* threads_startup_thread ******************************************************
+ /* initialize thread stacksize */
- Thread startup function called by pthread_create.
+ if (pthread_attr_setstacksize(&attr, opt_stacksize))
+ vm_abort("threads_impl_thread_start: pthread_attr_setstacksize failed: %s",
+ strerror(errno));
- NOTE: This function is not called directly by pthread_create. The Boehm GC
- inserts its own GC_start_routine in between, which then calls
- threads_startup.
+ /* create the thread */
+
+ ret = pthread_create(&(thread->tid), &attr, threads_startup_thread, &startup);
+
+ /* destroy the thread attributes */
+
+ if (pthread_attr_destroy(&attr) != 0)
+ vm_abort("threads_impl_thread_start: pthread_attr_destroy failed: %s",
+ strerror(errno));
+
+ /* check for pthread_create error */
+
+ if (ret != 0)
+ vm_abort("threads_impl_thread_start: pthread_create failed: %s",
+ strerror(errno));
+
+ /* signal that pthread_create has returned, so thread->tid is valid */
+
+ threads_sem_post(&sem_first);
+
+ /* wait here until the thread has entered itself into the thread list */
+
+ threads_sem_wait(&sem);
+
+ /* cleanup */
+
+ sem_destroy(&sem);
+ sem_destroy(&sem_first);
+}
+
+
+/* threads_set_thread_priority *************************************************
+
+ Set the priority of the given thread.
IN:
- t............the argument passed to pthread_create, ie. a pointer to
- a startupinfo struct. CAUTION: When the `psem` semaphore
- is posted, the startupinfo struct becomes invalid! (It
- is allocated on the stack of threads_start_thread.)
+ tid..........thread id
+ priority.....priority to set
******************************************************************************/
-static void *threads_startup_thread(void *t)
+void threads_set_thread_priority(pthread_t tid, int priority)
{
- startupinfo *startup;
- threadobject *thread;
- sem_t *psem;
- threadobject *tnext;
- methodinfo *method;
- functionptr function;
+ struct sched_param schedp;
+ int policy;
-#if defined(ENABLE_INTRP)
- u1 *intrp_thread_stack;
+ pthread_getschedparam(tid, &policy, &schedp);
+ schedp.sched_priority = priority;
+ pthread_setschedparam(tid, policy, &schedp);
+}
- /* create interpreter stack */
- if (opt_intrp) {
- intrp_thread_stack = GCMNEW(u1, opt_stacksize);
- MSET(intrp_thread_stack, 0, u1, opt_stacksize);
- }
- else
- intrp_thread_stack = NULL;
+/* threads_attach_current_thread ***********************************************
+
+ Attaches the current thread to the VM. Used in JNI.
+
+*******************************************************************************/
+
+bool threads_attach_current_thread(JavaVMAttachArgs *vm_aargs, bool isdaemon)
+{
+ threadobject *thread;
+ utf *u;
+ java_handle_t *s;
+ java_handle_t *o;
+ java_lang_Thread *t;
+
+#if defined(ENABLE_JAVASE)
+ java_lang_ThreadGroup *group;
+ threadobject *mainthread;
+ classinfo *c;
+ methodinfo *m;
#endif
- /* get passed startupinfo structure and the values in there */
+#if defined(WITH_CLASSPATH_GNU)
+ java_lang_VMThread *vmt;
+#endif
- startup = t;
- t = NULL; /* make sure it's not used wrongly */
+ /* Enter the join-mutex, so if the main-thread is currently
+ waiting to join all threads, the number of non-daemon threads
+ is correct. */
- thread = startup->thread;
- function = startup->function;
- psem = startup->psem;
+ threads_mutex_join_lock();
- /* Seems like we've encountered a situation where thread->tid was not set by
- * pthread_create. We alleviate this problem by waiting for pthread_create
- * to return. */
- threads_sem_wait(startup->psem_first);
+ /* create internal thread data-structure */
- /* set the thread object */
+ thread = threads_thread_new();
-#if defined(__DARWIN__)
- thread->mach_thread = mach_thread_self();
-#endif
- threads_set_current_threadobject(thread);
+ /* thread is a Java thread and running */
- /* insert the thread into the threadlist and the threads table */
+ thread->flags = THREAD_FLAG_JAVA;
- pthread_mutex_lock(&threadlistlock);
+ if (isdaemon)
+ thread->flags |= THREAD_FLAG_DAEMON;
- thread->prev = mainthreadobj;
- thread->next = tnext = mainthreadobj->next;
- mainthreadobj->next = thread;
- tnext->prev = thread;
+ /* The thread is flagged and (non-)daemon thread, we can leave the
+ mutex. */
- threads_table_add(thread);
+ threads_mutex_join_unlock();
- pthread_mutex_unlock(&threadlistlock);
+ /* create a java.lang.Thread object */
- /* init data structures of this thread */
+ t = (java_lang_Thread *) builtin_new(class_java_lang_Thread);
- lock_init_execution_env(thread);
+ /* XXX memory leak!!! */
+ if (t == NULL)
+ return false;
- /* tell threads_startup_thread that we registered ourselves */
- /* CAUTION: *startup becomes invalid with this! */
+ thread->object = t;
- startup = NULL;
- threads_sem_post(psem);
+ /* thread is completely initialized */
- /* set our priority */
+ threads_thread_state_runnable(thread);
- threads_set_thread_priority(thread->tid, thread->o.thread->priority);
+#if !defined(NDEBUG)
+ if (opt_verbosethreads) {
+ printf("[Attaching thread ");
+ threads_thread_print_info(thread);
+ printf("]\n");
+ }
+#endif
#if defined(ENABLE_INTRP)
- /* set interpreter stack */
+ /* create interpreter stack */
- if (opt_intrp)
- thread->_global_sp = (void *) (intrp_thread_stack + opt_stacksize);
+ if (opt_intrp) {
+ MSET(intrp_main_stack, 0, u1, opt_stacksize);
+ thread->_global_sp = (Cell *) (intrp_main_stack + opt_stacksize);
+ }
#endif
+#if defined(WITH_CLASSPATH_GNU)
+ /* create a java.lang.VMThread object */
-#if defined(ENABLE_JVMTI)
- /* breakpoint for thread start event */
- __asm__("threadstart:");
-#endif
+ vmt = (java_lang_VMThread *) builtin_new(class_java_lang_VMThread);
+ /* XXX memory leak!!! */
+ if (vmt == NULL)
+ return false;
- /* find and run the Thread.run()V method if no other function was passed */
+ /* set the thread */
- if (function == NULL) {
- method = class_resolveclassmethod(thread->o.header.vftbl->class,
- utf_run,
- utf_void__void,
- thread->o.header.vftbl->class,
- true);
+ LLNI_field_set_ref(vmt, thread, t);
+ LLNI_field_set_val(vmt, vmdata, (java_lang_Object *) thread);
+
+#elif defined(WITH_CLASSPATH_SUN)
+
+ vm_abort("threads_attach_current_thread: IMPLEMENT ME!");
+
+#elif defined(WITH_CLASSPATH_CLDC1_1)
- if (!method)
- throw_exception();
+ LLNI_field_set_val(t, vm_thread, (java_lang_Object *) thread);
- (void) vm_call_method(method, (java_objectheader *) thread);
+#else
+# error unknown classpath configuration
+#endif
+ if (vm_aargs != NULL) {
+ u = utf_new_char(vm_aargs->name);
+#if defined(ENABLE_JAVASE)
+ group = (java_lang_ThreadGroup *) vm_aargs->group;
+#endif
}
else {
- /* call passed function, e.g. finalizer_thread */
+ u = utf_null;
+#if defined(ENABLE_JAVASE)
+ /* get the main thread */
- (function)();
+ mainthread = threads_list_first();
+ group = LLNI_field_direct(mainthread->object, group);
+#endif
}
-#if defined(ENABLE_JVMTI)
- /* breakpoint for thread end event */
- __asm__("threadend:");
-#endif
+ /* the the thread name */
+ s = javastring_new(u);
- /* Allow lock record pools to be used by other threads. They
- cannot be deleted so we'd better not waste them. */
+ /* for convenience */
- /* XXX We have to find a new way to free lock records */
- /* with the new locking algorithm. */
- /* lock_record_free_pools(thread->ee.lockrecordpools); */
+ o = (java_handle_t *) thread->object;
- /* remove thread from thread list and threads table, do this inside a lock */
+#if defined(WITH_CLASSPATH_GNU)
+ (void) vm_call_method(method_thread_init, o, vmt, s, NORM_PRIORITY,
+ isdaemon);
+#elif defined(WITH_CLASSPATH_CLDC1_1)
+ (void) vm_call_method(method_thread_init, o, s);
+#endif
- pthread_mutex_lock(&threadlistlock);
+ if (exceptions_get_exception())
+ return false;
- thread->next->prev = thread->prev;
- thread->prev->next = thread->next;
+#if defined(ENABLE_JAVASE)
+ /* store the thread group in the object */
- threads_table_remove(thread);
+ LLNI_field_direct(thread->object, group) = group;
- pthread_mutex_unlock(&threadlistlock);
+ /* add thread to given thread-group */
- /* reset thread id (lock on joinmutex? TWISTI) */
+ LLNI_class_get(group, c);
- pthread_mutex_lock(&thread->joinmutex);
- thread->tid = 0;
- pthread_mutex_unlock(&thread->joinmutex);
+ m = class_resolveclassmethod(c,
+ utf_addThread,
+ utf_java_lang_Thread__V,
+ class_java_lang_ThreadGroup,
+ true);
- /* tell everyone that a thread has finished */
+ o = (java_handle_t *) group;
- pthread_cond_broadcast(&thread->joincond);
+ (void) vm_call_method(m, o, t);
- return NULL;
-}
+ if (exceptions_get_exception())
+ return false;
+#endif
+ return true;
+}
-/* threads_start_thread ********************************************************
- Start a thread in the JVM.
+/* threads_detach_thread *******************************************************
- IN:
- t............the java.lang.Thread object
- function.....function to run in the new thread. NULL means that the
- "run" method of the object `t` should be called
+ Detaches the passed thread from the VM. Used in JNI.
-******************************************************************************/
+*******************************************************************************/
-void threads_start_thread(java_lang_Thread *t, functionptr function)
+bool threads_detach_thread(threadobject *t)
{
- sem_t sem;
- sem_t sem_first;
- pthread_attr_t attr;
- startupinfo startup;
- threadobject *thread;
-
- thread = (threadobject *) t->vmThread;
+#if defined(ENABLE_JAVASE)
+ java_lang_Thread *object;
+ java_lang_ThreadGroup *group;
+ java_handle_t *e;
+ java_lang_Object *handler;
+ classinfo *c;
+ methodinfo *m;
+ java_handle_t *o;
+#endif
- /* fill startupinfo structure passed by pthread_create to
- * threads_startup_thread */
+#if defined(ENABLE_JAVASE)
+ object = t->object;
- startup.thread = thread;
- startup.function = function; /* maybe we don't call Thread.run()V */
- startup.psem = &sem;
- startup.psem_first = &sem_first;
+ group = LLNI_field_direct(object, group);
- threads_sem_init(&sem, 0, 0);
- threads_sem_init(&sem_first, 0, 0);
+ /* If there's an uncaught exception, call uncaughtException on the
+ thread's exception handler, or the thread's group if this is
+ unset. */
- /* initialize thread attribute object */
+ e = exceptions_get_and_clear_exception();
- if (pthread_attr_init(&attr))
- vm_abort("pthread_attr_init failed: %s", strerror(errno));
+ if (e != NULL) {
+ /* We use a java_lang_Object here, as it's not trivial to
+ build the java_lang_Thread_UncaughtExceptionHandler header
+ file. */
- /* initialize thread stacksize */
+# if defined(WITH_CLASSPATH_GNU)
+ handler = (java_lang_Object *) LLNI_field_direct(object, exceptionHandler);
+# elif defined(WITH_CLASSPATH_SUN)
+ handler = (java_lang_Object *) LLNI_field_direct(object, uncaughtExceptionHandler);
+# endif
- if (pthread_attr_setstacksize(&attr, opt_stacksize))
- vm_abort("pthread_attr_setstacksize failed: %s", strerror(errno));
+ if (handler != NULL) {
+ LLNI_class_get(handler, c);
+ o = (java_handle_t *) handler;
+ }
+ else {
+ LLNI_class_get(group, c);
+ o = (java_handle_t *) group;
+ }
- /* create the thread */
+ m = class_resolveclassmethod(c,
+ utf_uncaughtException,
+ utf_java_lang_Thread_java_lang_Throwable__V,
+ NULL,
+ true);
+
+ if (m == NULL)
+ return false;
+
+ (void) vm_call_method(m, o, object, e);
+
+ if (exceptions_get_exception())
+ return false;
+ }
+
+ /* XXX TWISTI: should all threads be in a ThreadGroup? */
+
+ /* Remove thread from the thread group. */
+
+ if (group != NULL) {
+ LLNI_class_get(group, c);
+
+# if defined(WITH_CLASSPATH_GNU)
+ m = class_resolveclassmethod(c,
+ utf_removeThread,
+ utf_java_lang_Thread__V,
+ class_java_lang_ThreadGroup,
+ true);
+# elif defined(WITH_CLASSPATH_SUN)
+ m = class_resolveclassmethod(c,
+ utf_remove,
+ utf_java_lang_Thread__V,
+ class_java_lang_ThreadGroup,
+ true);
+# else
+# error unknown classpath configuration
+# endif
- if (pthread_create(&thread->tid, &attr, threads_startup_thread, &startup))
- vm_abort("pthread_create failed: %s", strerror(errno));
+ if (m == NULL)
+ return false;
- /* signal that pthread_create has returned, so thread->tid is valid */
+ o = (java_handle_t *) group;
- threads_sem_post(&sem_first);
+ (void) vm_call_method(m, o, object);
- /* wait here until the thread has entered itself into the thread list */
+ if (exceptions_get_exception())
+ return false;
+ }
+#endif
- threads_sem_wait(&sem);
+ /* thread is terminated */
- /* cleanup */
+ threads_thread_state_terminated(t);
- sem_destroy(&sem);
- sem_destroy(&sem_first);
-}
+#if !defined(NDEBUG)
+ if (opt_verbosethreads) {
+ printf("[Detaching thread ");
+ threads_thread_print_info(t);
+ printf("]\n");
+ }
+#endif
+ /* Enter the join-mutex before calling threads_thread_free, so
+ threads_join_all_threads gets the correct number of non-daemon
+ threads. */
-/* threads_find_non_daemon_thread **********************************************
+ threads_mutex_join_lock();
- Helper function used by threads_join_all_threads for finding non-daemon threads
- that are still running.
+ /* free the vm internal thread object */
-*******************************************************************************/
+ threads_thread_free(t);
-/* At the end of the program, we wait for all running non-daemon threads to die
- */
+ /* Signal that this thread has finished and leave the mutex. */
-static threadobject *threads_find_non_daemon_thread(threadobject *thread)
-{
- while (thread != mainthreadobj) {
- if (!thread->o.thread->daemon)
- return thread;
- thread = thread->prev;
- }
+ pthread_cond_signal(&cond_join);
+ threads_mutex_join_unlock();
- return NULL;
+ return true;
}
void threads_join_all_threads(void)
{
- threadobject *thread;
+ threadobject *t;
- pthread_mutex_lock(&threadlistlock);
+ /* get current thread */
- while ((thread = threads_find_non_daemon_thread(mainthreadobj->prev)) != NULL) {
+ t = THREADOBJECT;
- pthread_mutex_lock(&thread->joinmutex);
+ /* this thread is waiting for all non-daemon threads to exit */
- pthread_mutex_unlock(&threadlistlock);
+ threads_thread_state_waiting(t);
- while (thread->tid)
- pthread_cond_wait(&thread->joincond, &thread->joinmutex);
+ /* enter join mutex */
- pthread_mutex_unlock(&thread->joinmutex);
+ threads_mutex_join_lock();
- pthread_mutex_lock(&threadlistlock);
- }
+ /* Wait for condition as long as we have non-daemon threads. We
+ compare against 1 because the current (main thread) is also a
+ non-daemon thread. */
+
+ while (threads_list_get_non_daemons() > 1)
+ pthread_cond_wait(&cond_join, &mutex_join);
+
+ /* leave join mutex */
- pthread_mutex_unlock(&threadlistlock);
+ threads_mutex_join_unlock();
}
*******************************************************************************/
-static bool threads_wait_with_timeout(threadobject *t,
+static bool threads_wait_with_timeout(threadobject *thread,
struct timespec *wakeupTime)
{
bool wasinterrupted;
/* acquire the waitmutex */
- pthread_mutex_lock(&t->waitmutex);
+ pthread_mutex_lock(&thread->waitmutex);
/* mark us as sleeping */
- t->sleeping = true;
+ thread->sleeping = true;
/* wait on waitcond */
if (wakeupTime->tv_sec || wakeupTime->tv_nsec) {
/* with timeout */
- while (!t->interrupted && !t->signaled
+ while (!thread->interrupted && !thread->signaled
&& threads_current_time_is_earlier_than(wakeupTime))
{
- pthread_cond_timedwait(&t->waitcond, &t->waitmutex, wakeupTime);
+ threads_thread_state_timed_waiting(thread);
+
+ pthread_cond_timedwait(&thread->waitcond, &thread->waitmutex,
+ wakeupTime);
+
+ threads_thread_state_runnable(thread);
}
}
else {
/* no timeout */
- while (!t->interrupted && !t->signaled)
- pthread_cond_wait(&t->waitcond, &t->waitmutex);
+ while (!thread->interrupted && !thread->signaled) {
+ threads_thread_state_waiting(thread);
+
+ pthread_cond_wait(&thread->waitcond, &thread->waitmutex);
+
+ threads_thread_state_runnable(thread);
+ }
}
/* check if we were interrupted */
- wasinterrupted = t->interrupted;
+ wasinterrupted = thread->interrupted;
/* reset all flags */
- t->interrupted = false;
- t->signaled = false;
- t->sleeping = false;
+ thread->interrupted = false;
+ thread->signaled = false;
+ thread->sleeping = false;
/* release the waitmutex */
- pthread_mutex_unlock(&t->waitmutex);
+ pthread_mutex_unlock(&thread->waitmutex);
return wasinterrupted;
}
*******************************************************************************/
-bool threads_wait_with_timeout_relative(threadobject *t,
- s8 millis,
+bool threads_wait_with_timeout_relative(threadobject *thread, s8 millis,
s4 nanos)
{
struct timespec wakeupTime;
/* wait */
- return threads_wait_with_timeout(t, &wakeupTime);
+ return threads_wait_with_timeout(thread, &wakeupTime);
}
}
-/* threads_interrupt_thread ****************************************************
+/* threads_thread_interrupt ****************************************************
Interrupt the given thread.
*******************************************************************************/
-void threads_interrupt_thread(java_lang_VMThread *thread)
+void threads_thread_interrupt(threadobject *thread)
{
- threadobject *t = (threadobject*) thread;
+ /* Signal the thread a "waitcond" and tell it that it has been
+ interrupted. */
+
+ pthread_mutex_lock(&thread->waitmutex);
+
+ /* Interrupt blocking system call using a signal. */
+
+ pthread_kill(thread->tid, SIGHUP);
+
+ if (thread->sleeping)
+ pthread_cond_signal(&thread->waitcond);
- /* signal the thread a "waitcond" and tell it that it has been */
- /* interrupted */
+ thread->interrupted = true;
- pthread_mutex_lock(&t->waitmutex);
- if (t->sleeping)
- pthread_cond_signal(&t->waitcond);
- t->interrupted = true;
- pthread_mutex_unlock(&t->waitmutex);
+ pthread_mutex_unlock(&thread->waitmutex);
}
bool threads_check_if_interrupted_and_reset(void)
{
- threadobject *t;
+ threadobject *thread;
bool intr;
- t = (threadobject*) THREADOBJECT;
+ thread = THREADOBJECT;
+
+ /* get interrupted flag */
- intr = t->interrupted;
+ intr = thread->interrupted;
- t->interrupted = false;
+ /* reset interrupted flag */
+
+ thread->interrupted = false;
return intr;
}
-/* threads_thread_has_been_interrupted *********************************************************
+/* threads_thread_has_been_interrupted *****************************************
Check if the given thread has been interrupted
*******************************************************************************/
-bool threads_thread_has_been_interrupted(java_lang_VMThread *thread)
+bool threads_thread_has_been_interrupted(threadobject *thread)
{
- threadobject *t;
-
- t = (threadobject*) thread;
-
- return t->interrupted;
+ return thread->interrupted;
}
void threads_sleep(s8 millis, s4 nanos)
{
- threadobject *t;
- struct timespec wakeupTime;
- bool wasinterrupted;
+ threadobject *thread;
+ struct timespec wakeupTime;
+ bool wasinterrupted;
- t = (threadobject *) THREADOBJECT;
+ thread = THREADOBJECT;
threads_calc_absolute_time(&wakeupTime, millis, nanos);
- wasinterrupted = threads_wait_with_timeout(t, &wakeupTime);
+ wasinterrupted = threads_wait_with_timeout(thread, &wakeupTime);
if (wasinterrupted)
- *exceptionptr = new_exception(string_java_lang_InterruptedException);
+ exceptions_throw_interruptedexception();
}
-/* threads_yield *****************************************************************
+/* threads_yield ***************************************************************
Yield to the scheduler.
}
-/* threads_java_lang_Thread_set_priority ***********************************************************
-
- Set the priority for the given java.lang.Thread.
-
- IN:
- t............the java.lang.Thread
- priority.....the priority
-
-*******************************************************************************/
-
-void threads_java_lang_Thread_set_priority(java_lang_Thread *t, s4 priority)
-{
- threadobject *thread;
-
- thread = (threadobject*) t->vmThread;
-
- threads_set_thread_priority(thread->tid, priority);
-}
-
-
-/* threads_dump ****************************************************************
-
- Dumps info for all threads running in the JVM. This function is
- called when SIGQUIT (<ctrl>-\) is sent to CACAO.
-
-*******************************************************************************/
-
-void threads_dump(void)
-{
- threadobject *tobj;
- java_lang_VMThread *vmt;
- java_lang_Thread *t;
- utf *name;
-
- tobj = mainthreadobj;
-
- printf("Full thread dump CACAO "VERSION":\n");
-
- /* iterate over all started threads */
-
- do {
- /* get thread objects */
-
- vmt = &tobj->o;
- t = vmt->thread;
-
- /* the thread may be currently in initalization, don't print it */
-
- if (t) {
- /* get thread name */
-
- name = javastring_toutf(t->name, false);
-
- printf("\n\"");
- utf_display_printable_ascii(name);
- printf("\" ");
-
- if (t->daemon)
- printf("daemon ");
-
-#if SIZEOF_VOID_P == 8
- printf("prio=%d tid=0x%016lx\n", t->priority, tobj->tid);
-#else
- printf("prio=%d tid=0x%08lx\n", t->priority, tobj->tid);
-#endif
-
- /* send SIGUSR1 to thread to print stacktrace */
-
- pthread_kill(tobj->tid, SIGUSR1);
-
- /* sleep this thread a bit, so the signal can reach the thread */
-
- threads_sleep(10, 0);
- }
-
- tobj = tobj->next;
- } while (tobj && (tobj != mainthreadobj));
-}
-
-
-/* threads_table_dump *********************************************************
-
- Dump the threads table for debugging purposes.
-
- IN:
- file..............stream to write to
-
-******************************************************************************/
-
-#if !defined(NDEBUG)
-static void threads_table_dump(FILE *file)
-{
- s4 i;
- s4 size;
- ptrint index;
-
- pthread_mutex_lock(&threadlistlock);
-
- size = threads_table.size;
-
- fprintf(file, "======== THREADS TABLE (size %d) ========\n", size);
-
- for (i=0; i<size; ++i) {
- index = threads_table.table[i].nextfree;
-
- fprintf(file, "%4d: ", i);
-
- if (index < size) {
- fprintf(file, "free, nextfree = %d\n", index);
- }
- else {
- fprintf(file, "thread %p\n", (void*) threads_table.table[i].thread);
- }
- }
-
- fprintf(file, "======== END OF THREADS TABLE ========\n");
-
- pthread_mutex_unlock(&threadlistlock);
-}
-#endif
-
-
-#if defined(ENABLE_JVMTI)
-/* jvmti_get_threads_breakpoints ***********************************************
-
- gets all breakpoints from this file
-
-*******************************************************************************/
-
-void jvmti_get_threads_breakpoints(void **brks) {
- __asm__ ("movl $threadstart,%0;" :"=m"(brks[0]));
- __asm__ ("movl $threadend,%0;" :"=m"(brks[1]));
-}
-#endif
-
/*
* These are local overrides for various environment variables in Emacs.
* Please do not remove this and leave it at the end of the file, where
projects / cacao.git / blobdiff