Remove __ASSUME_POSIX_TIMERS.

1 files changed, 139 insertions, 201 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/timer_create.c b/nptl/sysdeps/unix/sysv/linux/timer_create.c
index 8d365eb9a4..c2865fb4f3 100644
--- a/nptl/sysdeps/unix/sysv/linux/timer_create.c
+++ b/nptl/sysdeps/unix/sysv/linux/timer_create.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003,2004, 2007, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
 
@@ -30,21 +30,9 @@
 #include "kernel-posix-cpu-timers.h"
 
 
-#ifdef __NR_timer_create
-# ifndef __ASSUME_POSIX_TIMERS
-static int compat_timer_create (clockid_t clock_id, struct sigevent *evp,
-				timer_t *timerid);
-#  define timer_create static compat_timer_create
-#  include <nptl/sysdeps/pthread/timer_create.c>
-#  undef timer_create
-
-/* Nonzero if the system calls are not available.  */
-int __no_posix_timers attribute_hidden;
-# endif
-
-# ifdef timer_create_alias
-#  define timer_create timer_create_alias
-# endif
+#ifdef timer_create_alias
+# define timer_create timer_create_alias
+#endif
 
 
 int
@@ -53,190 +41,140 @@ timer_create (clock_id, evp, timerid)
      struct sigevent *evp;
      timer_t *timerid;
 {
-# undef timer_create
-# ifndef __ASSUME_POSIX_TIMERS
-  if  (__no_posix_timers >= 0)
-# endif
-    {
-      clockid_t syscall_clockid = (clock_id == CLOCK_PROCESS_CPUTIME_ID
-				   ? MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED)
-				   : clock_id == CLOCK_THREAD_CPUTIME_ID
-				   ? MAKE_THREAD_CPUCLOCK (0, CPUCLOCK_SCHED)
-				   : clock_id);
-
-      /* If the user wants notification via a thread we need to handle
-	 this special.  */
-      if (evp == NULL
-	  || __builtin_expect (evp->sigev_notify != SIGEV_THREAD, 1))
-	{
-	  struct sigevent local_evp;
-
-	  /* We avoid allocating too much memory by basically
-	     using struct timer as a derived class with the
-	     first two elements being in the superclass.  We only
-	     need these two elements here.  */
-	  struct timer *newp = (struct timer *) malloc (offsetof (struct timer,
-								  thrfunc));
-	  if (newp == NULL)
-	    /* No more memory.  */
+#undef timer_create
+  {
+    clockid_t syscall_clockid = (clock_id == CLOCK_PROCESS_CPUTIME_ID
+				 ? MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED)
+				 : clock_id == CLOCK_THREAD_CPUTIME_ID
+				 ? MAKE_THREAD_CPUCLOCK (0, CPUCLOCK_SCHED)
+				 : clock_id);
+
+    /* If the user wants notification via a thread we need to handle
+       this special.  */
+    if (evp == NULL
+	|| __builtin_expect (evp->sigev_notify != SIGEV_THREAD, 1))
+      {
+	struct sigevent local_evp;
+
+	/* We avoid allocating too much memory by basically
+	   using struct timer as a derived class with the
+	   first two elements being in the superclass.  We only
+	   need these two elements here.  */
+	struct timer *newp = (struct timer *) malloc (offsetof (struct timer,
+								thrfunc));
+	if (newp == NULL)
+	  /* No more memory.  */
+	  return -1;
+
+	if (evp == NULL)
+	  {
+	    /* The kernel has to pass up the timer ID which is a
+	       userlevel object.  Therefore we cannot leave it up to
+	       the kernel to determine it.  */
+	    local_evp.sigev_notify = SIGEV_SIGNAL;
+	    local_evp.sigev_signo = SIGALRM;
+	    local_evp.sigev_value.sival_ptr = newp;
+
+	    evp = &local_evp;
+	  }
+
+	kernel_timer_t ktimerid;
+	int retval = INLINE_SYSCALL (timer_create, 3, syscall_clockid, evp,
+				     &ktimerid);
+
+	if (retval != -1)
+	  {
+	    newp->sigev_notify = (evp != NULL
+				  ? evp->sigev_notify : SIGEV_SIGNAL);
+	    newp->ktimerid = ktimerid;
+
+	    *timerid = (timer_t) newp;
+	  }
+	else
+	  {
+	    /* Cannot allocate the timer, fail.  */
+	    free (newp);
+	    retval = -1;
+	  }
+
+	return retval;
+      }
+    else
+      {
+	/* Create the helper thread.  */
+	pthread_once (&__helper_once, __start_helper_thread);
+	if (__helper_tid == 0)
+	  {
+	    /* No resources to start the helper thread.  */
+	    __set_errno (EAGAIN);
 	    return -1;
-
-	  if (evp == NULL)
-	    {
-	      /* The kernel has to pass up the timer ID which is a
-		 userlevel object.  Therefore we cannot leave it up to
-		 the kernel to determine it.  */
-	      local_evp.sigev_notify = SIGEV_SIGNAL;
-	      local_evp.sigev_signo = SIGALRM;
-	      local_evp.sigev_value.sival_ptr = newp;
-
-	      evp = &local_evp;
-	    }
-
-	  kernel_timer_t ktimerid;
-	  int retval = INLINE_SYSCALL (timer_create, 3, syscall_clockid, evp,
-				       &ktimerid);
-
-# ifndef __ASSUME_POSIX_TIMERS
-	  if (retval != -1 || errno != ENOSYS)
-# endif
-	    {
-# ifndef __ASSUME_POSIX_TIMERS
-	      __no_posix_timers = 1;
-# endif
-
-	      if (retval != -1)
-		{
-		  newp->sigev_notify = (evp != NULL
-					? evp->sigev_notify : SIGEV_SIGNAL);
-		  newp->ktimerid = ktimerid;
-
-		  *timerid = (timer_t) newp;
-		}
-	      else
-		{
-		  /* Cannot allocate the timer, fail.  */
-		  free (newp);
-		  retval = -1;
-		}
-
-	      return retval;
-	    }
-
-	  free (newp);
-
-# ifndef __ASSUME_POSIX_TIMERS
-	  /* When we come here the syscall does not exist.  Make sure we
-	     do not try to use it again.  */
-	  __no_posix_timers = -1;
-# endif
-	}
-      else
-	{
-# ifndef __ASSUME_POSIX_TIMERS
-	  /* Make sure we have the necessary kernel support.  */
-	  if (__no_posix_timers == 0)
-	    {
-	      INTERNAL_SYSCALL_DECL (err);
-	      struct timespec ts;
-	      int res;
-	      res = INTERNAL_SYSCALL (clock_getres, err, 2,
-				      CLOCK_REALTIME, &ts);
-	      __no_posix_timers = (INTERNAL_SYSCALL_ERROR_P (res, err)
-				   ? -1 : 1);
-	    }
-
-	  if (__no_posix_timers > 0)
-# endif
-	    {
-	      /* Create the helper thread.  */
-	      pthread_once (&__helper_once, __start_helper_thread);
-	      if (__helper_tid == 0)
-		{
-		  /* No resources to start the helper thread.  */
-		  __set_errno (EAGAIN);
-		  return -1;
-		}
-
-	      struct timer *newp;
-	      newp = (struct timer *) malloc (sizeof (struct timer));
-	      if (newp == NULL)
-		return -1;
-
-	      /* Copy the thread parameters the user provided.  */
-	      newp->sival = evp->sigev_value;
-	      newp->thrfunc = evp->sigev_notify_function;
-	      newp->sigev_notify = SIGEV_THREAD;
-
-	      /* We cannot simply copy the thread attributes since the
-		 implementation might keep internal information for
-		 each instance.  */
-	      (void) pthread_attr_init (&newp->attr);
-	      if (evp->sigev_notify_attributes != NULL)
-		{
-		  struct pthread_attr *nattr;
-		  struct pthread_attr *oattr;
-
-		  nattr = (struct pthread_attr *) &newp->attr;
-		  oattr = (struct pthread_attr *) evp->sigev_notify_attributes;
-
-		  nattr->schedparam = oattr->schedparam;
-		  nattr->schedpolicy = oattr->schedpolicy;
-		  nattr->flags = oattr->flags;
-		  nattr->guardsize = oattr->guardsize;
-		  nattr->stackaddr = oattr->stackaddr;
-		  nattr->stacksize = oattr->stacksize;
-		}
-
-	      /* In any case set the detach flag.  */
-	      (void) pthread_attr_setdetachstate (&newp->attr,
-						  PTHREAD_CREATE_DETACHED);
-
-	      /* Create the event structure for the kernel timer.  */
-	      struct sigevent sev =
-		{ .sigev_value.sival_ptr = newp,
-		  .sigev_signo = SIGTIMER,
-		  .sigev_notify = SIGEV_SIGNAL | SIGEV_THREAD_ID,
-		  ._sigev_un = { ._pad = { [0] = __helper_tid } } };
-
-	      /* Create the timer.  */
-	      INTERNAL_SYSCALL_DECL (err);
-	      int res;
-	      res = INTERNAL_SYSCALL (timer_create, err, 3,
-				      syscall_clockid, &sev, &newp->ktimerid);
-	      if (! INTERNAL_SYSCALL_ERROR_P (res, err))
-		{
-		  /* Add to the queue of active timers with thread
-		     delivery.  */
-		  pthread_mutex_lock (&__active_timer_sigev_thread_lock);
-		  newp->next = __active_timer_sigev_thread;
-		  __active_timer_sigev_thread = newp;
-		  pthread_mutex_unlock (&__active_timer_sigev_thread_lock);
-
-		  *timerid = (timer_t) newp;
-		  return 0;
-		}
-
-	      /* Free the resources.  */
-	      free (newp);
-
-	      __set_errno (INTERNAL_SYSCALL_ERRNO (res, err));
-
-	      return -1;
-	    }
-	}
-    }
-
-# ifndef __ASSUME_POSIX_TIMERS
-  /* Compatibility code.  */
-  return compat_timer_create (clock_id, evp, timerid);
-# endif
+	  }
+
+	struct timer *newp;
+	newp = (struct timer *) malloc (sizeof (struct timer));
+	if (newp == NULL)
+	  return -1;
+
+	/* Copy the thread parameters the user provided.  */
+	newp->sival = evp->sigev_value;
+	newp->thrfunc = evp->sigev_notify_function;
+	newp->sigev_notify = SIGEV_THREAD;
+
+	/* We cannot simply copy the thread attributes since the
+	   implementation might keep internal information for
+	   each instance.  */
+	(void) pthread_attr_init (&newp->attr);
+	if (evp->sigev_notify_attributes != NULL)
+	  {
+	    struct pthread_attr *nattr;
+	    struct pthread_attr *oattr;
+
+	    nattr = (struct pthread_attr *) &newp->attr;
+	    oattr = (struct pthread_attr *) evp->sigev_notify_attributes;
+
+	    nattr->schedparam = oattr->schedparam;
+	    nattr->schedpolicy = oattr->schedpolicy;
+	    nattr->flags = oattr->flags;
+	    nattr->guardsize = oattr->guardsize;
+	    nattr->stackaddr = oattr->stackaddr;
+	    nattr->stacksize = oattr->stacksize;
+	  }
+
+	/* In any case set the detach flag.  */
+	(void) pthread_attr_setdetachstate (&newp->attr,
+					    PTHREAD_CREATE_DETACHED);
+
+	/* Create the event structure for the kernel timer.  */
+	struct sigevent sev =
+	  { .sigev_value.sival_ptr = newp,
+	    .sigev_signo = SIGTIMER,
+	    .sigev_notify = SIGEV_SIGNAL | SIGEV_THREAD_ID,
+	    ._sigev_un = { ._pad = { [0] = __helper_tid } } };
+
+	/* Create the timer.  */
+	INTERNAL_SYSCALL_DECL (err);
+	int res;
+	res = INTERNAL_SYSCALL (timer_create, err, 3,
+				syscall_clockid, &sev, &newp->ktimerid);
+	if (! INTERNAL_SYSCALL_ERROR_P (res, err))
+	  {
+	    /* Add to the queue of active timers with thread
+	       delivery.  */
+	    pthread_mutex_lock (&__active_timer_sigev_thread_lock);
+	    newp->next = __active_timer_sigev_thread;
+	    __active_timer_sigev_thread = newp;
+	    pthread_mutex_unlock (&__active_timer_sigev_thread_lock);
+
+	    *timerid = (timer_t) newp;
+	    return 0;
+	  }
+
+	/* Free the resources.  */
+	free (newp);
+
+	__set_errno (INTERNAL_SYSCALL_ERRNO (res, err));
+
+	return -1;
+      }
+  }
 }
-#else
-# ifdef timer_create_alias
-#  define timer_create timer_create_alias
-# endif
-/* The new system calls are not available.  Use the userlevel
-   implementation.  */
-# include <nptl/sysdeps/pthread/timer_create.c>
-#endif