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authorRoland McGrath <roland@gnu.org>2006-02-27 00:58:29 +0000
committerRoland McGrath <roland@gnu.org>2006-02-27 00:58:29 +0000
commit0ccdd33975fb4bd91a7d920b86168c8a5216d256 (patch)
tree6e8e44671d9e6e28eacdb6d50c734b8c8b13344c /nptl/sysdeps
parent33e9f5904dd86ed8da768091493a493e76f0bb9b (diff)
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2006-02-26 Roland McGrath <roland@redhat.com>
	* sysdeps/generic/pt-raise.c: Moved to ...
	* pt-raise.c: ... here.
	* sysdeps/generic/lowlevellock.h: Moved to ...
	* lowlevellock.h: ... here.
Diffstat (limited to 'nptl/sysdeps')
-rw-r--r--nptl/sysdeps/generic/lowlevellock.h89
-rw-r--r--nptl/sysdeps/generic/pt-raise.c30
2 files changed, 0 insertions, 119 deletions
diff --git a/nptl/sysdeps/generic/lowlevellock.h b/nptl/sysdeps/generic/lowlevellock.h
deleted file mode 100644
index 7f95daadad..0000000000
--- a/nptl/sysdeps/generic/lowlevellock.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/* Copyright (C) 2002 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <atomic.h>
-
-
-/* Implement generic mutex.  Basic futex syscall support is required:
-
-     lll_futex_wait(futex, value) - call sys_futex with FUTEX_WAIT
-				    and third parameter VALUE
-
-     lll_futex_wake(futex, value) - call sys_futex with FUTEX_WAKE
-				    and third parameter VALUE
-*/
-
-
-/* Mutex lock counter:
-   bit 31 clear means unlocked;
-   bit 31 set means locked.
-
-   All code that looks at bit 31 first increases the 'number of
-   interested threads' usage counter, which is in bits 0-30.
-
-   All negative mutex values indicate that the mutex is still locked.  */
-
-
-static inline void
-__generic_mutex_lock (int *mutex)
-{
-  unsigned int v;
-
-  /* Bit 31 was clear, we got the mutex.  (this is the fastpath).  */
-  if (atomic_bit_test_set (mutex, 31) == 0)
-    return;
-
-  atomic_increment (mutex);
-
-  while (1)
-    {
-      if (atomic_bit_test_set (mutex, 31) == 0)
-	{
-	  atomic_decrement (mutex);
-	  return;
-	}
-
-      /* We have to wait now. First make sure the futex value we are
-	 monitoring is truly negative (i.e. locked). */
-      v = *mutex;
-      if (v >= 0)
-	continue;
-
-      lll_futex_wait (mutex, v);
-    }
-}
-
-
-static inline void
-__generic_mutex_unlock (int *mutex)
-{
-  /* Adding 0x80000000 to the counter results in 0 if and only if
-     there are not other interested threads - we can return (this is
-     the fastpath).  */
-  if (atomic_add_zero (mutex, 0x80000000))
-    return;
-
-  /* There are other threads waiting for this mutex, wake one of them
-     up.  */
-  lll_futex_wake (mutex, 1);
-}
-
-
-#define lll_mutex_lock(futex) __generic_mutex_lock (&(futex))
-#define lll_mutex_unlock(futex) __generic_mutex_unlock (&(futex))
diff --git a/nptl/sysdeps/generic/pt-raise.c b/nptl/sysdeps/generic/pt-raise.c
deleted file mode 100644
index 59d9590e6e..0000000000
--- a/nptl/sysdeps/generic/pt-raise.c
+++ /dev/null
@@ -1,30 +0,0 @@
-/* Copyright (C) 2002 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <pthread.h>
-#include <signal.h>
-
-
-int
-raise (sig)
-     int sig;
-{
-  /* This is what POSIX says must happen.  */
-  return pthread_kill (pthread_self (), sig);
-}