libjava patches for RTEMS

libjava patches for RTEMS

[Jie Liu]

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Hi,

GCJ is available on RTEMS/pc386. Here is the libjava testsuite result
on RTEMS/pc386:

		=== libjava Summary ===
# of expected passes		2249
# of unexpected failures	94
# of untested testcases	66

As the testsuite result is good enough, I think it's time to  get the
patch reviewed and merged into gcc. The patch is attached. :)

Best Regards,
Jie

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Index: Makefile.in
===================================================================
--- Makefile.in	(revision 172224)
+++ Makefile.in	(working copy)
@@ -58,6 +58,7 @@
 @USING_DARWIN_CRT_TRUE@am__append_15 = darwin.cc
 @USING_POSIX_THREADS_TRUE@am__append_16 = posix-threads.cc
 @USING_WIN32_THREADS_TRUE@am__append_17 = win32-threads.cc
+@USING_RTEMS_THREADS_TRUE@am__append_rtems = rtems-threads.cc
 @USING_NO_THREADS_TRUE@am__append_18 = no-threads.cc
 @BUILD_SUBLIBS_TRUE@am__append_19 = libgcj-noncore.la
 @BUILD_SUBLIBS_TRUE@am__append_20 = libgcj-noncore.la
@@ -389,12 +390,14 @@
 @USING_DARWIN_CRT_TRUE@am__objects_10 = darwin.lo
 @USING_POSIX_THREADS_TRUE@am__objects_11 = posix-threads.lo
 @USING_WIN32_THREADS_TRUE@am__objects_12 = win32-threads.lo
+@USING_RTEMS_THREADS_TRUE@am__objects_rtems = rtems-threads.lo
 @USING_NO_THREADS_TRUE@am__objects_13 = no-threads.lo
 am_libgcj_la_OBJECTS = prims.lo jni.lo exception.lo stacktrace.lo \
 	link.lo defineclass.lo verify.lo $(am__objects_2) \
 	$(am__objects_5) $(am__objects_6) $(am__objects_7) \
 	$(am__objects_8) $(am__objects_9) $(am__objects_10) \
-	$(am__objects_11) $(am__objects_12) $(am__objects_13)
+	$(am__objects_11) $(am__objects_12) $(am__objects_13) \
+        $(am_objects_rtems)
 libgcj_la_OBJECTS = $(am_libgcj_la_OBJECTS)
 libgcj_bc_la_LIBADD =
 am_libgcj_bc_la_OBJECTS = libgcj_bc.lo
@@ -1056,7 +1059,8 @@
 	defineclass.cc verify.cc $(libgcj_interpret_source_files) \
 	$(nat_source_files) $(am__append_11) $(am__append_12) \
 	$(am__append_13) $(am__append_14) $(am__append_15) \
-	$(am__append_16) $(am__append_17) $(am__append_18)
+	$(am__append_16) $(am__append_17) $(am__append_18) \
+        $(am_append_rtems)
 @USING_DARWIN_CRT_FALSE@LIBJAVA_LDFLAGS_LIBMATH = -lm
 @USING_DARWIN_CRT_TRUE@LIBJAVA_LDFLAGS_LIBMATH = 
 nat_files = $(nat_source_files:.cc=.lo)
Index: rtems-threads.cc
===================================================================
--- rtems-threads.cc	(revision 0)
+++ rtems-threads.cc	(revision 0)
@@ -0,0 +1,735 @@
+// rtems-threads.cc - interface between libjava and POSIX threads.
+//by lj8175 20110629
+/* Copyright (C) 1998, 1999, 2000, 2001, 2004, 2006  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.  */
+
+// TO DO:
+// * Document signal handling limitations
+
+#include <config.h>
+
+#include "posix.h"
+#include "rtems-threads.h"
+
+// If we're using the Boehm GC, then we need to override some of the
+// thread primitives.  This is fairly gross.
+#ifdef HAVE_BOEHM_GC
+#include <gc.h>
+#endif /* HAVE_BOEHM_GC */
+
+#include <stdlib.h>
+#include <time.h>
+#include <signal.h>
+#include <errno.h>
+#include <limits.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>	// To test for _POSIX_THREAD_PRIORITY_SCHEDULING
+#endif
+
+#include <gcj/cni.h>
+#include <jvm.h>
+#include <java/lang/Thread.h>
+#include <java/lang/System.h>
+#include <java/lang/Long.h>
+#include <java/lang/OutOfMemoryError.h>
+#include <java/lang/InternalError.h>
+
+// This is used to implement thread startup.
+struct starter
+{
+  _Jv_ThreadStartFunc *method;
+  _Jv_Thread_t *data;
+};
+
+// This is the key used to map from the POSIX thread value back to the
+// Java object representing the thread.  The key is global to all
+// threads, so it is ok to make it a global here.
+pthread_key_t _Jv_ThreadKey;
+
+// This is the key used to map from the POSIX thread value back to the
+// _Jv_Thread_t* representing the thread.
+pthread_key_t _Jv_ThreadDataKey;
+
+// We keep a count of all non-daemon threads which are running.  When
+// this reaches zero, _Jv_ThreadWait returns.
+static pthread_mutex_t daemon_mutex;
+static pthread_cond_t daemon_cond;
+static int non_daemon_count;
+
+// The signal to use when interrupting a thread.
+#if defined(LINUX_THREADS) || defined(FREEBSD_THREADS)
+  // LinuxThreads (prior to glibc 2.1) usurps both SIGUSR1 and SIGUSR2.
+  // GC on FreeBSD uses both SIGUSR1 and SIGUSR2.
+#  define INTR SIGHUP
+#else /* LINUX_THREADS */
+#  define INTR SIGUSR2
+#endif /* LINUX_THREADS */
+
+//
+// These are the flags that can appear in _Jv_Thread_t.
+//
+
+// Thread started.
+#define FLAG_START   0x01
+// Thread is daemon.
+#define FLAG_DAEMON  0x02
+
+\f
+
+int
+_Jv_MutexLock (_Jv_Mutex_t *mu)
+{
+  pthread_t self = pthread_self ();
+  if (mu->owner == self)
+    {
+      mu->count++;
+    }
+  else
+    {
+      JvSetThreadState holder (_Jv_ThreadCurrent(), JV_BLOCKED);
+	
+#     ifdef LOCK_DEBUG
+	int result = pthread_mutex_lock (&mu->mutex);
+	if (0 != result)
+	  {
+	    fprintf(stderr, "Pthread_mutex_lock returned %d\n", result);
+	    for (;;) {}
+	  }
+#     else
+        pthread_mutex_lock (&mu->mutex);
+#     endif
+      mu->count = 1;
+      mu->owner = self;
+    }
+  return 0;
+}
+
+// Wait for the condition variable "CV" to be notified. 
+// Return values:
+// 0: the condition was notified, or the timeout expired.
+// _JV_NOT_OWNER: the thread does not own the mutex "MU".   
+// _JV_INTERRUPTED: the thread was interrupted. Its interrupted flag is set.   
+int
+_Jv_CondWait (_Jv_ConditionVariable_t *cv, _Jv_Mutex_t *mu,
+	      jlong millis, jint nanos)
+{
+  pthread_t self = pthread_self();
+  if (mu->owner != self)
+    return _JV_NOT_OWNER;
+
+  struct timespec ts;
+
+  JvThreadState new_state = JV_WAITING;
+  if (millis > 0 || nanos > 0)
+    {
+      // Calculate the abstime corresponding to the timeout.
+      unsigned long long seconds;
+      unsigned long usec;
+
+      // For better accuracy, should use pthread_condattr_setclock
+      // and clock_gettime.
+#ifdef HAVE_GETTIMEOFDAY
+      timeval tv;
+      gettimeofday (&tv, NULL);
+      usec = tv.tv_usec;
+      seconds = tv.tv_sec;
+#else
+      unsigned long long startTime = java::lang::System::currentTimeMillis();
+      seconds = startTime / 1000;
+      /* Assume we're about half-way through this millisecond.  */
+      usec = (startTime % 1000) * 1000 + 500;
+#endif
+      /* These next two statements cannot overflow.  */
+      usec += nanos / 1000;
+      usec += (millis % 1000) * 1000;
+      /* These two statements could overflow only if tv.tv_sec was
+	 insanely large.  */
+      seconds += millis / 1000;
+      seconds += usec / 1000000;
+
+      ts.tv_sec = seconds;
+      if (ts.tv_sec < 0 || (unsigned long long)ts.tv_sec != seconds)
+        {
+          // We treat a timeout that won't fit into a struct timespec
+          // as a wait forever.
+          millis = nanos = 0;
+        }
+      else
+	/* This next statement also cannot overflow.  */
+	ts.tv_nsec = (usec % 1000000) * 1000 + (nanos % 1000);
+    }
+
+  _Jv_Thread_t *current = _Jv_ThreadCurrentData ();
+  java::lang::Thread *current_obj = _Jv_ThreadCurrent ();
+
+  pthread_mutex_lock (&current->wait_mutex);
+
+  // Now that we hold the wait mutex, check if this thread has been 
+  // interrupted already.
+  if (current_obj->interrupt_flag)
+    {
+      pthread_mutex_unlock (&current->wait_mutex);
+      return _JV_INTERRUPTED;
+    }
+
+  // Set the thread's state.
+  JvSetThreadState holder (current_obj, new_state);
+
+  // Add this thread to the cv's wait set.
+  current->next = NULL;
+
+  if (cv->first == NULL)
+    cv->first = current;
+  else
+    for (_Jv_Thread_t *t = cv->first;; t = t->next)
+      {
+        if (t->next == NULL)
+          {
+            t->next = current;
+            break;
+          }
+      }
+
+  // Record the current lock depth, so it can be restored when we re-aquire it.
+  int count = mu->count;
+
+  // Release the monitor mutex.
+  mu->count = 0;
+  mu->owner = 0;
+  pthread_mutex_unlock (&mu->mutex);
+  
+  int r = 0;
+  bool done_sleeping = false;
+
+  while (! done_sleeping)
+    {
+      if (millis == 0 && nanos == 0)
+	r = pthread_cond_wait (&current->wait_cond, &current->wait_mutex);
+      else
+	r = pthread_cond_timedwait (&current->wait_cond, &current->wait_mutex, 
+				    &ts);
+
+      // In older glibc's (prior to 2.1.3), the cond_wait functions may 
+      // spuriously wake up on a signal. Catch that here.
+      if (r != EINTR)
+        done_sleeping = true;
+    }
+  
+  // Check for an interrupt *before* releasing the wait mutex.
+  jboolean interrupted = current_obj->interrupt_flag;
+  
+  pthread_mutex_unlock (&current->wait_mutex);
+
+  //  Reaquire the monitor mutex, and restore the lock count.
+  pthread_mutex_lock (&mu->mutex);
+  mu->owner = self;
+  mu->count = count;
+
+  // If we were interrupted, or if a timeout occurred, remove ourself from
+  // the cv wait list now. (If we were notified normally, notify() will have
+  // already taken care of this)
+  if (r == ETIMEDOUT || interrupted)
+    {
+      _Jv_Thread_t *prev = NULL;
+      for (_Jv_Thread_t *t = cv->first; t != NULL; t = t->next)
+        {
+	  if (t == current)
+	    {
+	      if (prev != NULL)
+		prev->next = t->next;
+	      else
+	        cv->first = t->next;
+	      t->next = NULL;
+	      break;
+	    }
+	  prev = t;
+	}
+      if (interrupted)
+	return _JV_INTERRUPTED;
+    }
+  
+  return 0;
+}
+
+int
+_Jv_CondNotify (_Jv_ConditionVariable_t *cv, _Jv_Mutex_t *mu)
+{
+  if (_Jv_MutexCheckMonitor (mu))
+    return _JV_NOT_OWNER;
+
+  _Jv_Thread_t *target;
+  _Jv_Thread_t *prev = NULL;
+
+  for (target = cv->first; target != NULL; target = target->next)
+    {
+      pthread_mutex_lock (&target->wait_mutex);
+
+      if (target->thread_obj->interrupt_flag)
+        {
+	  // Don't notify a thread that has already been interrupted.
+	  pthread_mutex_unlock (&target->wait_mutex);
+          prev = target;
+	  continue;
+	}
+
+      pthread_cond_signal (&target->wait_cond);
+      pthread_mutex_unlock (&target->wait_mutex);
+
+      // Two concurrent notify() calls must not be delivered to the same 
+      // thread, so remove the target thread from the cv wait list now.
+      if (prev == NULL)
+	cv->first = target->next;
+      else
+        prev->next = target->next;
+		
+      target->next = NULL;
+      
+      break;
+    }
+
+  return 0;
+}
+
+int
+_Jv_CondNotifyAll (_Jv_ConditionVariable_t *cv, _Jv_Mutex_t *mu)
+{
+  if (_Jv_MutexCheckMonitor (mu))
+    return _JV_NOT_OWNER;
+
+  _Jv_Thread_t *target;
+  _Jv_Thread_t *prev = NULL;
+
+  for (target = cv->first; target != NULL; target = target->next)
+    {
+      pthread_mutex_lock (&target->wait_mutex);
+      pthread_cond_signal (&target->wait_cond);
+      pthread_mutex_unlock (&target->wait_mutex);
+
+      if (prev != NULL)
+	prev->next = NULL;
+      prev = target;
+    }
+  if (prev != NULL)
+    prev->next = NULL;
+    
+  cv->first = NULL;
+
+  return 0;
+}
+
+void
+_Jv_ThreadInterrupt (_Jv_Thread_t *data)
+{
+  pthread_mutex_lock (&data->wait_mutex);
+
+  // Set the thread's interrupted flag *after* aquiring its wait_mutex. This
+  // ensures that there are no races with the interrupt flag being set after 
+  // the waiting thread checks it and before pthread_cond_wait is entered.
+  data->thread_obj->interrupt_flag = true;
+
+  // Interrupt blocking system calls using a signal.
+  pthread_kill (data->thread, INTR);
+  
+  pthread_cond_signal (&data->wait_cond);
+  
+  pthread_mutex_unlock (&data->wait_mutex);
+}
+
+/**
+ * Releases the block on a thread created by _Jv_ThreadPark().  This
+ * method can also be used to terminate a blockage caused by a prior
+ * call to park.  This operation is unsafe, as the thread must be
+ * guaranteed to be live.
+ *
+ * @param thread the thread to unblock.
+ */
+void
+ParkHelper::unpark ()
+{
+  using namespace ::java::lang;
+  volatile obj_addr_t *ptr = &permit;
+
+  /* If this thread is in state RUNNING, give it a permit and return
+     immediately.  */
+  if (compare_and_swap 
+      (ptr, Thread::THREAD_PARK_RUNNING, Thread::THREAD_PARK_PERMIT))
+    return;
+
+  /* If this thread is parked, put it into state RUNNING and send it a
+     signal.  */
+  if (compare_and_swap
+      (ptr, Thread::THREAD_PARK_PARKED, Thread::THREAD_PARK_RUNNING))
+    {
+      int result;
+      pthread_mutex_lock (&mutex);
+      result = pthread_cond_signal (&cond);
+      pthread_mutex_unlock (&mutex);
+      JvAssert (result == 0);
+    }
+}
+
+/**
+ * Sets our state to dead.
+ */
+void
+ParkHelper::deactivate ()
+{
+  permit = ::java::lang::Thread::THREAD_PARK_DEAD;
+}
+
+void
+ParkHelper::init ()
+{
+  pthread_mutex_init (&mutex, NULL);
+  pthread_cond_init (&cond, NULL);
+  permit = ::java::lang::Thread::THREAD_PARK_RUNNING;
+}
+
+/**
+ * Blocks the thread until a matching _Jv_ThreadUnpark() occurs, the
+ * thread is interrupted or the optional timeout expires.  If an
+ * unpark call has already occurred, this also counts.  A timeout
+ * value of zero is defined as no timeout.  When isAbsolute is true,
+ * the timeout is in milliseconds relative to the epoch.  Otherwise,
+ * the value is the number of nanoseconds which must occur before
+ * timeout.  This call may also return spuriously (i.e.  for no
+ * apparent reason).
+ *
+ * @param isAbsolute true if the timeout is specified in milliseconds from
+ *                   the epoch.
+ * @param time either the number of nanoseconds to wait, or a time in
+ *             milliseconds from the epoch to wait for.
+ */
+void
+ParkHelper::park (jboolean isAbsolute, jlong time)
+{
+  using namespace ::java::lang;
+  volatile obj_addr_t *ptr = &permit;
+
+  /* If we have a permit, return immediately.  */
+  if (compare_and_swap 
+      (ptr, Thread::THREAD_PARK_PERMIT, Thread::THREAD_PARK_RUNNING))
+    return;
+
+  struct timespec ts;
+
+  if (time)
+    {
+      unsigned long long seconds;
+      unsigned long usec;
+
+      if (isAbsolute)
+	{
+	  ts.tv_sec = time / 1000;
+	  ts.tv_nsec = (time % 1000) * 1000 * 1000;
+	}
+      else
+	{
+	  // Calculate the abstime corresponding to the timeout.
+	  jlong nanos = time;
+	  jlong millis = 0;
+
+	  // For better accuracy, should use pthread_condattr_setclock
+	  // and clock_gettime.
+#ifdef HAVE_GETTIMEOFDAY
+	  timeval tv;
+	  gettimeofday (&tv, NULL);
+	  usec = tv.tv_usec;
+	  seconds = tv.tv_sec;
+#else
+	  unsigned long long startTime
+	    = java::lang::System::currentTimeMillis();
+	  seconds = startTime / 1000;
+	  /* Assume we're about half-way through this millisecond.  */
+	  usec = (startTime % 1000) * 1000 + 500;
+#endif
+	  /* These next two statements cannot overflow.  */
+	  usec += nanos / 1000;
+	  usec += (millis % 1000) * 1000;
+	  /* These two statements could overflow only if tv.tv_sec was
+	     insanely large.  */
+	  seconds += millis / 1000;
+	  seconds += usec / 1000000;
+
+	  ts.tv_sec = seconds;
+	  if (ts.tv_sec < 0 || (unsigned long long)ts.tv_sec != seconds)
+	    {
+	      // We treat a timeout that won't fit into a struct timespec
+	      // as a wait forever.
+	      millis = nanos = 0;
+	    }
+	  else
+	    /* This next statement also cannot overflow.  */
+	    ts.tv_nsec = (usec % 1000000) * 1000 + (nanos % 1000);
+	}
+    }
+
+  pthread_mutex_lock (&mutex);
+  if (compare_and_swap 
+      (ptr, Thread::THREAD_PARK_RUNNING, Thread::THREAD_PARK_PARKED))
+    {
+      int result = 0;
+
+      if (! time)
+	result = pthread_cond_wait (&cond, &mutex);
+      else
+	result = pthread_cond_timedwait (&cond, &mutex, &ts);
+
+      JvAssert (result == 0 || result == ETIMEDOUT);
+
+      /* If we were unparked by some other thread, this will already
+	 be in state THREAD_PARK_RUNNING.  If we timed out or were
+	 interrupted, we have to do it ourself.  */
+      permit = Thread::THREAD_PARK_RUNNING;
+    }
+  pthread_mutex_unlock (&mutex);
+}
+
+static void
+handle_intr (int)
+{
+  // Do nothing.
+}
+
+void
+_Jv_BlockSigchld()
+{
+  sigset_t mask;
+  sigemptyset (&mask);
+  sigaddset (&mask, SIGCHLD);
+  int c = pthread_sigmask (SIG_BLOCK, &mask, NULL);
+  if (c != 0)
+    JvFail (strerror (c));
+}
+
+void
+_Jv_UnBlockSigchld()
+{
+  sigset_t mask;
+  sigemptyset (&mask);
+  sigaddset (&mask, SIGCHLD);
+  int c = pthread_sigmask (SIG_UNBLOCK, &mask, NULL);
+  if (c != 0)
+    JvFail (strerror (c));
+}
+
+void
+_Jv_InitThreads (void)
+{
+  pthread_key_create (&_Jv_ThreadKey, NULL);
+  pthread_key_create (&_Jv_ThreadDataKey, NULL);
+  pthread_mutex_init (&daemon_mutex, NULL);
+  pthread_cond_init (&daemon_cond, 0);
+  non_daemon_count = 0;
+
+  // Arrange for the interrupt signal to interrupt system calls.
+  struct sigaction act;
+  act.sa_handler = handle_intr;
+  sigemptyset (&act.sa_mask);
+  act.sa_flags = 0;
+  sigaction (INTR, &act, NULL);
+
+  // Block SIGCHLD here to ensure that any non-Java threads inherit the new 
+  // signal mask.
+  _Jv_BlockSigchld();
+
+  // Check/set the thread stack size.
+  size_t min_ss = 32 * 1024;
+  
+  if (sizeof (void *) == 8)
+    // Bigger default on 64-bit systems.
+    min_ss *= 2;
+
+#ifdef PTHREAD_STACK_MIN
+  if (min_ss < PTHREAD_STACK_MIN)
+    min_ss = PTHREAD_STACK_MIN;
+#endif
+  
+  if (gcj::stack_size > 0 && gcj::stack_size < min_ss)
+    gcj::stack_size = min_ss;
+}
+
+_Jv_Thread_t *
+_Jv_ThreadInitData (java::lang::Thread *obj)
+{
+  _Jv_Thread_t *data = (_Jv_Thread_t *) _Jv_Malloc (sizeof (_Jv_Thread_t));
+  data->flags = 0;
+  data->thread_obj = obj;
+
+  pthread_mutex_init (&data->wait_mutex, NULL);
+  pthread_cond_init (&data->wait_cond, NULL);
+
+  return data;
+}
+
+void
+_Jv_ThreadDestroyData (_Jv_Thread_t *data)
+{
+  pthread_mutex_destroy (&data->wait_mutex);
+  pthread_cond_destroy (&data->wait_cond);
+  _Jv_Free ((void *)data);
+}
+
+void
+_Jv_ThreadSetPriority (_Jv_Thread_t *data, jint prio)
+{
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+  if (data->flags & FLAG_START)
+    {
+      struct sched_param param;
+
+      param.sched_priority = prio;
+      pthread_setschedparam (data->thread, SCHED_OTHER, &param);
+    }
+#endif
+}
+
+void
+_Jv_ThreadRegister (_Jv_Thread_t *data)
+{
+  pthread_setspecific (_Jv_ThreadKey, data->thread_obj);
+  pthread_setspecific (_Jv_ThreadDataKey, data);
+
+  // glibc 2.1.3 doesn't set the value of `thread' until after start_routine
+  // is called. Since it may need to be accessed from the new thread, work 
+  // around the potential race here by explicitly setting it again.
+  data->thread = pthread_self ();
+
+# ifdef SLOW_PTHREAD_SELF
+    // Clear all self cache slots that might be needed by this thread.
+    int dummy;
+    int low_index = SC_INDEX(&dummy) + SC_CLEAR_MIN;
+    int high_index = SC_INDEX(&dummy) + SC_CLEAR_MAX;
+    for (int i = low_index; i <= high_index; ++i) 
+      {
+        int current_index = i;
+	if (current_index < 0)
+	  current_index += SELF_CACHE_SIZE;
+	if (current_index >= SELF_CACHE_SIZE)
+	  current_index -= SELF_CACHE_SIZE;
+	_Jv_self_cache[current_index].high_sp_bits = BAD_HIGH_SP_VALUE;
+      }
+# endif
+  // Block SIGCHLD which is used in natPosixProcess.cc.
+  _Jv_BlockSigchld();
+}
+
+void
+_Jv_ThreadUnRegister ()
+{
+  pthread_setspecific (_Jv_ThreadKey, NULL);
+  pthread_setspecific (_Jv_ThreadDataKey, NULL);
+}
+
+// This function is called when a thread is started.  We don't arrange
+// to call the `run' method directly, because this function must
+// return a value.
+static void *
+really_start (void *x)
+{
+  struct starter *info = (struct starter *) x;
+
+  _Jv_ThreadRegister (info->data);
+
+  info->method (info->data->thread_obj);
+
+  if (! (info->data->flags & FLAG_DAEMON))
+    {
+      pthread_mutex_lock (&daemon_mutex);
+      --non_daemon_count;
+      if (! non_daemon_count)
+	pthread_cond_signal (&daemon_cond);
+      pthread_mutex_unlock (&daemon_mutex);
+    }
+
+  return NULL;
+}
+
+void
+_Jv_ThreadStart (java::lang::Thread *thread, _Jv_Thread_t *data,
+		 _Jv_ThreadStartFunc *meth)
+{
+  struct sched_param param;
+  pthread_attr_t attr;
+  struct starter *info;
+
+  if (data->flags & FLAG_START)
+    return;
+  data->flags |= FLAG_START;
+
+  // Block SIGCHLD which is used in natPosixProcess.cc.
+  // The current mask is inherited by the child thread.
+  _Jv_BlockSigchld();
+
+  param.sched_priority = thread->getPriority();
+
+  pthread_attr_init (&attr);
+  pthread_attr_setschedparam (&attr, &param);
+  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+  
+  pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED);
+  pthread_attr_setschedpolicy(&attr, SCHED_RR);
+  
+  // Set stack size if -Xss option was given.
+  if (gcj::stack_size > 0)
+    {
+      int e = pthread_attr_setstacksize (&attr, gcj::stack_size);
+      if (e != 0)
+	JvFail (strerror (e));
+    }
+
+  info = (struct starter *) _Jv_AllocBytes (sizeof (struct starter));
+  info->method = meth;
+  info->data = data;
+
+  if (! thread->isDaemon())
+    {
+      pthread_mutex_lock (&daemon_mutex);
+      ++non_daemon_count;
+      pthread_mutex_unlock (&daemon_mutex);
+    }
+  else
+    data->flags |= FLAG_DAEMON;
+  int r = pthread_create (&data->thread, &attr, really_start, (void *) info);
+  
+  pthread_attr_destroy (&attr);
+
+  if (r)
+    {
+      const char* msg = "Cannot create additional threads";
+      throw new java::lang::OutOfMemoryError (JvNewStringUTF (msg));
+    }
+}
+
+void
+_Jv_ThreadWait (void)
+{
+  pthread_mutex_lock (&daemon_mutex);
+  if (non_daemon_count)
+    pthread_cond_wait (&daemon_cond, &daemon_mutex);
+  pthread_mutex_unlock (&daemon_mutex);
+}
+
+#if defined(SLOW_PTHREAD_SELF)
+
+#include "sysdep/locks.h"
+
+// Support for pthread_self() lookup cache.
+volatile self_cache_entry _Jv_self_cache[SELF_CACHE_SIZE];
+
+_Jv_ThreadId_t
+_Jv_ThreadSelf_out_of_line(volatile self_cache_entry *sce, size_t high_sp_bits)
+{
+  pthread_t self = pthread_self();
+  sce -> high_sp_bits = high_sp_bits;
+  write_barrier();
+  sce -> self = self;
+  return self;
+}
+
+#endif /* SLOW_PTHREAD_SELF */
Index: classpath/native/fdlibm/mprec.c
===================================================================
--- classpath/native/fdlibm/mprec.c	(revision 172224)
+++ classpath/native/fdlibm/mprec.c	(working copy)
@@ -1004,7 +1004,7 @@
 {1e-16, 1e-32};
 #endif
 
-
+#if !defined(__rtems__)
 double
 _DEFUN (_mprec_log10, (dig),
 	int dig)
@@ -1019,3 +1019,4 @@
     }
   return v;
 }
+#endif
Index: include/rtems-threads.h
===================================================================
--- include/rtems-threads.h	(revision 0)
+++ include/rtems-threads.h	(revision 0)
@@ -0,0 +1,384 @@
+// -*- c++ -*-
+// rtems-threads.h - Defines for using POSIX threads.
+
+/* Copyright (C) 1998, 1999, 2001, 2003, 2006  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.  */
+
+#ifndef __JV_POSIX_THREADS__
+#define __JV_POSIX_THREADS__
+
+// NOTE: This file may only reference those pthread functions which
+// are known not to be overridden by the Boehm GC.  If in doubt, scan
+// boehm-gc/gc.h.  This is yucky but lets us avoid including gc.h
+// everywhere (which would be truly yucky).
+
+#include <pthread.h>
+#include <sched.h>
+#include <sysdep/locks.h>
+
+//
+// Typedefs.
+//
+
+typedef struct _Jv_Thread_t
+{
+  // Flag values are defined in implementation.
+  int flags;
+
+  // Actual thread id.
+  pthread_t thread;
+  
+  // Java Thread object.
+  java::lang::Thread *thread_obj;
+  
+  // Condition variable and corresponding mutex, used to implement the
+  // interruptable wait/notify mechanism.
+  pthread_cond_t wait_cond;
+  pthread_mutex_t wait_mutex;
+
+  // Next thread for Condition Variable wait-list chain.
+  _Jv_Thread_t *next;
+  
+} _Jv_Thread_t;
+
+typedef void _Jv_ThreadStartFunc (java::lang::Thread *);
+
+// Condition Variables used to implement wait/notify/sleep/interrupt.
+typedef struct
+{
+  // Linked list of Threads that are waiting to be notified.
+  _Jv_Thread_t *first;
+
+} _Jv_ConditionVariable_t;
+
+typedef struct
+{
+  // For compatibility, simplicity, and correctness, we do not use the native
+  // pthreads recursive mutex implementation, but simulate them instead.
+
+  // Mutex the thread holds the entire time this mutex is held. 
+  pthread_mutex_t mutex;
+
+  // Thread holding this mutex.
+  pthread_t owner;
+
+  // Number of times mutex is held (lock depth).  If 0, the lock is not held.
+  int count;
+} _Jv_Mutex_t;
+
+// This is a convenience function used only by the pthreads thread
+// implementation.  This is slow, but that's too bad -- we need to do
+// the checks for correctness.  It might be nice to be able to compile
+// this out.  Returns 0 if the lock is held by the current thread, and
+// 1 otherwise.
+inline int
+_Jv_MutexCheckMonitor (_Jv_Mutex_t *mu)
+{
+  return (mu->owner != pthread_self());
+}
+
+// Type identifying a POSIX thread.
+typedef pthread_t _Jv_ThreadDesc_t;
+
+inline _Jv_ThreadDesc_t
+_Jv_GetPlatformThreadID(_Jv_Thread_t *t)
+{
+  return t->thread;
+}
+
+//
+// Signal helpers.
+//
+
+void _Jv_BlockSigchld();
+void _Jv_UnBlockSigchld();
+
+
+//
+// Condition variables.
+//
+
+int _Jv_CondWait (_Jv_ConditionVariable_t *cv, _Jv_Mutex_t *mu,
+		  jlong millis, jint nanos);
+		  
+int _Jv_CondNotify (_Jv_ConditionVariable_t *cv, _Jv_Mutex_t *mu);
+
+int _Jv_CondNotifyAll (_Jv_ConditionVariable_t *cv, _Jv_Mutex_t *mu);
+
+inline void
+_Jv_CondInit (_Jv_ConditionVariable_t *cv)
+{
+  cv->first = 0;
+}
+
+//
+// Mutexes.
+//
+
+#ifdef LOCK_DEBUG
+# include <stdio.h>
+#endif
+
+inline void
+_Jv_MutexInit (_Jv_Mutex_t *mu)
+{
+# ifdef LOCK_DEBUG /* Assumes Linuxthreads */
+  pthread_mutexattr_t attr;
+  pthread_mutexattr_init(&attr);
+  pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
+  pthread_mutex_init (&mu->mutex, &attr);
+# else
+  pthread_mutex_init (&mu->mutex, 0);
+# endif
+
+  mu->count = 0;
+  mu->owner = 0;
+}
+
+extern int _Jv_MutexLock (_Jv_Mutex_t *);
+
+inline int
+_Jv_MutexUnlock (_Jv_Mutex_t *mu)
+{
+  if (_Jv_MutexCheckMonitor (mu))
+    {
+#     ifdef LOCK_DEBUG
+	fprintf(stderr, "_Jv_MutexUnlock: Not owner\n");
+	for (;;) {}
+#     endif
+      return 1;
+    }
+    
+  mu->count--;
+
+  if (mu->count == 0)
+    {
+      mu->owner = 0;
+#     ifdef LOCK_DEBUG
+	int result = pthread_mutex_unlock (&mu->mutex);
+	if (0 != result)
+	  {
+	    fprintf(stderr, "Pthread_mutex_unlock returned %d\n", result);
+	    for (;;) {}
+	  }
+#     else
+        pthread_mutex_unlock (&mu->mutex);
+#     endif
+    }
+  return 0;
+}
+
+#ifndef LINUX_THREADS
+
+// pthread_mutex_destroy does nothing on Linux and it is a win to avoid
+// defining this macro.
+
+#define _Jv_HaveMutexDestroy
+
+inline void 
+_Jv_MutexDestroy (_Jv_Mutex_t *mu)
+{
+  pthread_mutex_destroy (&mu->mutex);
+}
+
+#endif /* LINUX_THREADS */
+
+//
+// Thread creation and manipulation.
+//
+
+void _Jv_InitThreads (void);
+
+_Jv_Thread_t *_Jv_ThreadInitData (java::lang::Thread *thread);
+void _Jv_ThreadDestroyData (_Jv_Thread_t *data);
+
+inline java::lang::Thread *
+_Jv_ThreadCurrent (void)
+{
+  extern pthread_key_t _Jv_ThreadKey;
+  return (java::lang::Thread *) pthread_getspecific (_Jv_ThreadKey);
+}
+
+#ifdef JV_HASH_SYNCHRONIZATION
+// Should be specialized to just load the "current thread" register
+// on platforms that support it.   Speed is of the essence.  The value
+// of the descriptor is not, so long as there is a one-to-one correspondence
+// to threads.
+
+
+#ifdef __ia64__
+
+typedef size_t _Jv_ThreadId_t;
+
+register size_t _Jv_self __asm__("r13");
+	// For linux_threads this is really a pointer to its thread data
+	// structure.  We treat it as opaque.  That should also work
+	// on other operating systems that follow the ABI standard.
+
+// This should become the prototype for machines that maintain a thread
+// pointer in a register.
+inline _Jv_ThreadId_t
+_Jv_ThreadSelf (void)
+{
+  return _Jv_self;
+}
+
+#define JV_SELF_DEFINED
+
+#endif /* __ia64__ */
+
+#ifdef __alpha__
+
+typedef void *_Jv_ThreadId_t;
+
+inline _Jv_ThreadId_t
+_Jv_ThreadSelf (void)
+{
+  return __builtin_thread_pointer ();
+}
+
+#define JV_SELF_DEFINED
+
+#endif /* __alpha__ */
+
+#if defined(SLOW_PTHREAD_SELF)
+
+#include "sysdep/locks.h"
+
+typedef pthread_t _Jv_ThreadId_t;
+
+// E.g. on X86 Linux, pthread_self() is too slow for our purpose.
+// Instead we maintain a cache based on the current sp value.
+// This is similar to what's done for thread local allocation in the
+// GC, only far simpler.
+// This code should probably go away when Linux/X86 starts using a
+// segment register to hold the thread id.
+# define LOG_THREAD_SPACING 12
+			// If two thread pointer values are closer than
+			// 1 << LOG_THREAD_SPACING, we assume they belong
+			// to the same thread.
+# define SELF_CACHE_SIZE 1024
+# define SC_INDEX(sp) (((unsigned long)(sp) >> 19) & (SELF_CACHE_SIZE-1))
+		        // Mapping from sp value to cache index.
+			// Note that this is not in any real sense a hash
+			// function, since we need to be able to clear
+			// all possibly matching slots on thread startup.
+			// Thus all entries that might correspond to
+			// a given thread are intentionally contiguous.
+			// Works well with anything that allocates at least
+			// 512KB stacks.
+# define SC_CLEAR_MIN (-16)	// When starting a new thread, we clear
+# define SC_CLEAR_MAX 0		// all self cache entries between
+				// SC_INDEX(sp)+SC_CLEAR_MIN and
+				// SC_INDEX(sp)+SC_CLEAR_MAX to ensure
+				// we never see stale values.  The
+				// current values assume a downward
+				// growing stack of size <= 7.5 MB.
+# define BAD_HIGH_SP_VALUE ((size_t)(-1))
+
+extern volatile
+struct self_cache_entry {
+  size_t high_sp_bits;	// sp value >> LOG_THREAD_SPACING
+  pthread_t self;	// Corresponding thread
+} _Jv_self_cache[];
+
+void _Jv_Self_Cache_Init();
+
+_Jv_ThreadId_t
+_Jv_ThreadSelf_out_of_line(volatile self_cache_entry *sce,
+			   size_t high_sp_bits);
+  
+inline _Jv_ThreadId_t
+_Jv_ThreadSelf (void)
+{
+  int dummy;
+  size_t sp = (size_t)(&dummy);
+  unsigned h = SC_INDEX(sp);
+  volatile self_cache_entry *sce = _Jv_self_cache + h;
+  pthread_t candidate_self = sce -> self;  // Read must precede following one.
+  read_barrier();
+  if (sce -> high_sp_bits == sp >> LOG_THREAD_SPACING)
+    {
+      // The sce -> self value we read must be valid.  An intervening
+      // cache replacement by another thread would have first replaced
+      // high_sp_bits by something else, and it can't possibly change
+      // back without our intervention.
+      return candidate_self;
+    }
+  else
+    return _Jv_ThreadSelf_out_of_line(sce, sp >> LOG_THREAD_SPACING);
+}
+
+#define JV_SELF_DEFINED
+
+#endif /* SLOW_PTHREAD_SELF */
+
+#ifndef JV_SELF_DEFINED /* If all else fails, call pthread_self directly */
+
+typedef pthread_t _Jv_ThreadId_t;
+
+inline _Jv_ThreadId_t
+_Jv_ThreadSelf (void)
+{
+  return pthread_self();
+}
+
+#endif /* !JV_SELF_DEFINED */
+
+#endif /* JV_HASH_SYNCHRONIZATION */
+
+inline _Jv_Thread_t *
+_Jv_ThreadCurrentData (void)
+{
+  extern pthread_key_t _Jv_ThreadDataKey;
+  return (_Jv_Thread_t *) pthread_getspecific (_Jv_ThreadDataKey);
+}
+
+inline void
+_Jv_ThreadYield (void)
+{
+#ifdef HAVE_SCHED_YIELD
+  sched_yield ();
+#endif /* HAVE_SCHED_YIELD */
+}
+
+void _Jv_ThreadRegister (_Jv_Thread_t *data);
+void _Jv_ThreadUnRegister ();
+
+void _Jv_ThreadSetPriority (_Jv_Thread_t *data, jint prio);
+
+void _Jv_ThreadStart (java::lang::Thread *thread, _Jv_Thread_t *data,
+		      _Jv_ThreadStartFunc *meth);
+
+void _Jv_ThreadWait (void);
+
+void _Jv_ThreadInterrupt (_Jv_Thread_t *data);
+
+// park() / unpark() support
+
+struct ParkHelper
+{
+  volatile obj_addr_t permit;
+  pthread_mutex_t mutex;
+  pthread_cond_t cond;
+  
+  void init ();
+  void deactivate ();
+  void destroy ();
+  void park (jboolean isAbsolute, jlong time);
+  void unpark ();
+};
+
+inline void
+ParkHelper::destroy ()
+{
+  pthread_mutex_destroy (&mutex);
+  pthread_cond_destroy (&cond);
+}
+
+#endif /* __JV_POSIX_THREADS__ */
Index: configure
===================================================================
--- configure	(revision 172224)
+++ configure	(working copy)
@@ -688,6 +688,8 @@
 USING_NO_THREADS_TRUE
 USING_WIN32_THREADS_FALSE
 USING_WIN32_THREADS_TRUE
+USING_RTEMS_THREADS_FALSE
+USING_RTEMS_THREADS_TRUE
 USING_POSIX_THREADS_FALSE
 USING_POSIX_THREADS_TRUE
 THREADCXXFLAGS
@@ -20704,6 +20706,16 @@
     ;;
  win32)
     ;;
+ rtems)
+$as_echo "#define HAVE_SYS_SOCKET_H 1" >>confdefs.h
+$as_echo "#define HAVE_NETINET_IN_H 1" >>confdefs.h
+$as_echo "#define HAVE_ARPA_INET_H 1" >>confdefs.h
+$as_echo "#define HAVE_NETDB_H 1" >>confdefs.h
+$as_echo "#define HAVE_SYS_IOCTL_H 1" >>confdefs.h
+$as_echo "#define HAVE_NET_IF_H 1" >>confdefs.h
+$as_echo "#define HAVE_IFADDRS_H 1" >>confdefs.h
+$as_echo "#define HAVE_GETTIMEOFDAY 1" >>confdefs.h
+    ;;
  decosf1 | irix | mach | os2 | dce | vxworks)
     as_fn_error "thread package $THREADS not yet supported" "$LINENO" 5
     ;;
@@ -20809,7 +20821,9 @@
     # contexts ourselves.
     THREADSTARTFILESPEC='crtmt%O%s'
     ;;
-
+ rtems)
+    THREADH=rtems-threads.h
+    ;;
  none)
     THREADH=no-threads.h
     ;;
@@ -20839,6 +20853,14 @@
   USING_WIN32_THREADS_FALSE=
 fi
 
+ if test "$THREADS" = rtems; then
+  USING_RTEMS_THREADS_TRUE=
+  USING_RTEMS_THREADS_FALSE='#'
+else
+  USING_RTEMS_THREADS_TRUE='#'
+  USING_RTEMS_THREADS_FALSE=
+fi
+
  if test "$THREADS" = none; then
   USING_NO_THREADS_TRUE=
   USING_NO_THREADS_FALSE='#'
@@ -25144,6 +25166,10 @@
   as_fn_error "conditional \"USING_WIN32_THREADS\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${USING_RTEMS_THREADS_TRUE}" && test -z "${USING_RTEMS_THREADS_FALSE}"; then
+  as_fn_error "conditional \"USING_RTEMS_THREADS\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${USING_NO_THREADS_TRUE}" && test -z "${USING_NO_THREADS_FALSE}"; then
   as_fn_error "conditional \"USING_NO_THREADS\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
Index: java/lang/natClass.cc
===================================================================
--- java/lang/natClass.cc	(revision 172224)
+++ java/lang/natClass.cc	(working copy)
@@ -1679,6 +1679,10 @@
   return NULL;
 }
 
+#if defined(__rtems__)
+# undef HAVE_TLS
+#endif
+
 #ifdef HAVE_TLS
 
 // NOTE: MCACHE_SIZE should be a power of 2 minus one.
Index: java/net/natVMInetAddressPosix.cc
===================================================================
--- java/net/natVMInetAddressPosix.cc	(revision 172224)
+++ java/net/natVMInetAddressPosix.cc	(working copy)
@@ -39,8 +39,10 @@
 #endif
 
 #ifndef HAVE_GETHOSTNAME_DECL
+#if !defined(__rtems__)
 extern "C" int gethostname (char *name, int namelen);
 #endif
+#endif
 
 jstring
 java::net::VMInetAddress::getLocalHostname ()
Index: Makefile.am
===================================================================
--- Makefile.am	(revision 172224)
+++ Makefile.am	(working copy)
@@ -478,6 +478,10 @@
 libgcj_la_SOURCES += win32-threads.cc
 endif
 
+if USING_RTEMS_THREADS
+libgcj_la_SOURCES += rtems-threads.cc
+endif
+
 if USING_NO_THREADS
 libgcj_la_SOURCES += no-threads.cc
 endif

Re: libjava patches for RTEMS

[Andrew Haley]

On 05/07/11 01:14, Jie Liu wrote:
> Hi,
> 
> GCJ is available on RTEMS/pc386. Here is the libjava testsuite result
> on RTEMS/pc386:
> 
> 		=== libjava Summary ===
> # of expected passes		2249
> # of unexpected failures	94
> # of untested testcases	66
> 
> As the testsuite result is good enough, I think it's time to  get the
> patch reviewed and merged into gcc. The patch is attached. :)

Ah, 94 failures?

Andrew.

Re: libjava patches for RTEMS

[Bryce McKinlay]

On Tue, Jul 5, 2011 at 3:14 PM, Andrew Haley <aph@redhat.com> wrote:

>> As the testsuite result is good enough, I think it's time to  get the
>> patch reviewed and merged into gcc. The patch is attached. :)
>
> Ah, 94 failures?

There isn't a minimum criteria on testsuite passes for new ports.
Presumably that's an improvement on before the patch.

However, I do have some concerns about the patch itself:

1. rtems-threads.cc seems to be just a copy of posix-threads.cc (if
there are differences, it wasn't obvious to me from reading the
patch). The rtems port should just use posix-threads like everything
else - if minor changes are needed, use configure #ifdefs.

2. It's bad form to make code conditional based on the OS name, ie:
"#if !defined(__rtems__)". Instead, it should be conditional on the
feature/function name using autoconf, like "#ifndef HAVE_GETHOSTNAME".
If the existing configure tests aren't sufficient or aren't working,
then you'd need to figure out why.

3. configure has been modified, but there's no corresponding patch to
configure.ac?

Bryce

Re: libjava patches for RTEMS

[Andrew Haley]

On 05/07/11 17:35, Bryce McKinlay wrote:
> On Tue, Jul 5, 2011 at 3:14 PM, Andrew Haley <aph@redhat.com> wrote:
> 
>>> As the testsuite result is good enough, I think it's time to  get the
>>> patch reviewed and merged into gcc. The patch is attached. :)
>>
>> Ah, 94 failures?

Perhaps, but it would be interesting to know why there are so many
failures, and what they are.  If this is the first stage of a work
in progress, that's fine, but I hope that some of these will be fixed.

Andrew.

Re: libjava patches for RTEMS

[Jie Liu]

Hi,
The libjava.sum[1] and libjava.log[2] generated when running libjava
testsuite can be seen on:
[1] http://rtemsgcj.googlecode.com/svn/trunk/gcjtest/testsuite_out/libjava.sum
[2] http://rtemsgcj.googlecode.com/svn/trunk/gcjtest/testsuite_out/libjava.log

Because of the testsuite is running on qemu, 2 failures are caused by
RTEMS hanging when starting on qemu. These two (PR12915.java and
Thread_Join.java) is PASS when I test it manually.
FAIL												After
FAIL: PR12915 execution - source compiled test				PASS
FAIL: Thread_Join -O3 execution - source compiled test		PASS

Almost every case has [compilation|execution|output] x [
|-findirect-dispatch|-O3|-O3 -findirect-dispatch] = 12 results. 6
failures are just one  FAIL of twelve results. The six are:
FAIL																	After
FAIL: PR12656 -findirect-dispatch execution - source compiled test					PASS
FAIL: PR141 -findirect-dispatch execution - source compiled test						PASS
FAIL: PR35020 execution - source compiled test									PASS
FAIL: PR5057 -O3 -findirect-dispatch execution - source compiled test					PASS
FAIL: PR56 -O3 execution - source compiled test									PASS
FAIL: err14 execution - source compiled test									PASS
These six is PASS when I compile them and run them again. In the
manual test, qemu is hanging once without any output(If it is hanging
when RTEMS is starting, there is some output). So, that may be the
same for why it’s FAIL when test automatically.

Many cases are failed in output or execution with all [
|-findirect-dispatch|-O3|-O3 -findirect-dispatch]. There are 20 cases
of this kind of situation and result in 80 failures. I tested it
manually to find why it is FAIL(The manual test in this section with
neither -O3 nor -findirect-dispatch).
FAIL																				After
FAIL: EvaluationOrder output - source compiled test (x4)										PASS
FAIL: LargeFile execution - source compiled test (x4)											PASS
after Modify
FAIL: PR18699 execution - source compiled test (x4)											FALL
FAIL: PR27908 execution - source compiled test (x4)											PASS after Modify
FAIL: Process_1 execution - source compiled test (x4)											UnSupport
FAIL: Process_2 execution - source compiled test (x4)											UnSupport
FAIL: Process_3 execution - source compiled test (x4)											UnSupport
FAIL: Process_4 execution - source compiled test (x4)											UnSupport
FAIL: Process_5 execution - source compiled test (x4)											UnSupport
FAIL: Process_6 execution - source compiled test (x4)											UnSupport
FAIL: Process_7 output - source compiled test (x4)											UnSupport
FAIL: TLtest execution - source compiled test (x4)											FAIL
FAIL: Thread_Alive execution - source compiled test (x4)										PASS
FAIL: Thread_Interrupt output - source compiled test (x4)										FAIL
FAIL: Thread_Sleep output - source compiled test (x4)											PASS
FAIL: Thread_Sleep_2 output - source compiled test (x4)										FAIL
FAIL: Thread_Wait execution - source compiled test (x4)										PASS
FAIL: Thread_Wait_2 execution - source compiled test (x4)										PASS
FAIL: Throw_2 output - source compiled test (x4)												FAIL
FAIL: pr133 output - source compiled test (x4)												PASS
1 EvaluationOrder output failures is caused by I add one more element
for argv[] in the RTEMS system wrap file. The failures are PASS when I
remove the element.
2 LargeFile.java attempts to write “OK” at a new file’s 2G position
and read it out, RTEMS is using memory file system, so the failures
are in forecast. It is PASS when I use a small position number, e.g.
32.
3 PR18699.java is hanging in PR18699.notifyObservers(…), And I have
not find the reason.
4 Process_1 to Process_7, RTEMS does not support dynamically loading
program and run it, such as “sed -e s/Hello/Goodbye/ Hello World”, so
the Process class is not supported on RTEMS.
5 PR27908.java is related to scheduling policy of RTEMS, now it can be
PASS with modifying source code, I will pay more attention to this
case and try to make it pass without any modifying.
6TList.java is hanging when call ThreadLocal.set() or ThreadLocal.get().
7 Thread_Alive.java, Thread_Sleep.java, Thread_Wait, Thread_Wait_2 can
get through when I reconfigured libjava with HAVE_GETTIMEOFDAY and
RTEMS with CONFIGURE_MICROSECONDS_PER_TICK(1000).
8 Thread_Interrupt.java failure result is “Busy wait was not
interrupted”. This may be the problem in RTEMS.
9 Thread_Sleep_2.java: System.nanoTime() is a little less than required.
10 Throw_2.java: Double.parseDouble(null) does not throw NullPointerException.
11 pr133.java is failure before is caused by I send a second argv to
Java, It is PASS when I removed the argv in system wrap file.

FAIL 										After
libjava.jar/TestClosureGC output					PASS
libjava.jar/simple output						PASS
libjava.loader/TestMultiple						UnSupport
libjava.loader/TestParent						UnSupport
libjava.lang/bclink (x2)							FAIL
1TestClosure.java and simple.java is PASS when I test them manually.
2TestMultiple.java and TestParent.java: RTEMS is not support
dynamically loading while they are called “loadClass ("dummy")”.
3 bclink.java : When compiled this with -findirect-dispatch, it will
throw NoClassDefFoundError Exception.

So the actual failures are 27 caused by 6 source file. I will pay more
attentions to this 6 file and make the patch for libjava.
How to mark those unsupported cases as expected failures on *-*-rtems* ?

Best Regards,
Jie


2011/7/6 Andrew Haley <aph@redhat.com>:
> On 05/07/11 17:35, Bryce McKinlay wrote:
>> On Tue, Jul 5, 2011 at 3:14 PM, Andrew Haley <aph@redhat.com> wrote:
>>
>>>> As the testsuite result is good enough, I think it's time to  get the
>>>> patch reviewed and merged into gcc. The patch is attached. :)
>>>
>>> Ah, 94 failures?
>
> Perhaps, but it would be interesting to know why there are so many
> failures, and what they are.  If this is the first stage of a work
> in progress, that's fine, but I hope that some of these will be fixed.
>
> Andrew.
>
>