* include/features.h (__GLIBC_MINOR__): Likewise.
2007-05-14 Ulrich Drepper <drepper@redhat.com>
+ * version.h (VERSION): Define to 6.
+ * include/features.h (__GLIBC_MINOR__): Likewise.
+
* malloc/malloc.c: Use all small bin slots on 64-bit archs.
* malloc/malloc.c (largebin_index): Really have 32 buckets with 64
-This directory contains the version 2.5 release of the GNU C Library.
+This directory contains the version 2.6 release of the GNU C Library.
The GNU C Library is the standard system C library for all GNU systems,
and is an important part of what makes up a GNU system. It provides the
The code for other CPU configurations supported by volunteers outside of
the core glibc maintenance effort is contained in the separate `ports'
-add-on. You can find glibc-ports-2.5 distributed separately in the
+add-on. You can find glibc-ports-2.6 distributed separately in the
same place where you got the main glibc distribution files.
Currently these configurations are known to work using the `ports' add-on:
-/* Copyright (C) 1991,1992,1993,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006
- Free Software Foundation, Inc.
+/* Copyright (C) 1991,1992,1993,1995-2006,2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Major and minor version number of the GNU C library package. Use
these macros to test for features in specific releases. */
#define __GLIBC__ 2
-#define __GLIBC_MINOR__ 5
+#define __GLIBC_MINOR__ 6
#define __GLIBC_PREREQ(maj, min) \
((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min))
2007-05-14 Ulrich Drepper <drepper@redhat.com>
- * sysdeps/unix/sysv/linux/sem_post.c: Only wake threads if old
- value of semaphore was zero.
- * sysdeps/unix/sysv/linux/i386/i486/sem_post.S: Likewise.
- * sysdeps/unix/sysv/linux/powerpc/sem_post.c: Likewise.
- * sysdeps/unix/sysv/linux/sparc/sparc32/sem_post.c: Likewise.
- * sysdeps/unix/sysv/linux/x86_64/sem_post.S: Likewise.
-
* sysdeps/unix/sysv/linux/x86_64/sem_wait.S: Remove unnecessary
extra cancellation test.
* sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S: Likewise.
- test with threaded process terminating and semadj (?) being applied
only after all threads are gone
+
+
+
+- semaphore changes:
+
+ - sem_post should only wake one thread and only when the state of
+ the semaphore changed from 0 to 1
+
+ this also requires that sem_wait and sem_timedwait don't drop the
+ post if they get canceled.
+
+ - possibly add counter field. This requires reviving the
+ differences between old and new semaphose funtions. The old ones
+ stay as they are now. The new once can use an additional field
+ wich is the counter for the number of waiters
-/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
LOCK
xaddl %edx, (%ebx)
- testl %edx, %edx
- jne 2f
-
movl $SYS_futex, %eax
movl $FUTEX_WAKE, %ecx
- movl $1, %edx
+ addl $1, %edx
ENTER_KERNEL
testl %eax, %eax
/* sem_post -- post to a POSIX semaphore. Powerpc version.
- Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
int *futex = (int *) sem;
__asm __volatile (__lll_rel_instr ::: "memory");
- if (atomic_increment_val (futex) == 1)
+ int nr = atomic_increment_val (futex);
+ int err = lll_futex_wake (futex, nr);
+ if (__builtin_expect (err, 0) < 0)
{
- int err = lll_futex_wake (futex, 1);
- if (__builtin_expect (err, 0) < 0)
- {
- __set_errno (-err);
- return -1;
- }
+ __set_errno (-err);
+ return -1;
}
return 0;
}
/* sem_post -- post to a POSIX semaphore. Generic futex-using version.
- Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
{
int *futex = (int *) sem;
- if (atomic_increment_val (futex) == 1)
+ int nr = atomic_increment_val (futex);
+ int err = lll_futex_wake (futex, nr);
+ if (__builtin_expect (err, 0) < 0)
{
- int err = lll_futex_wake (futex, 1);
- if (__builtin_expect (err, 0) < 0)
- {
- __set_errno (-err);
- return -1;
- }
+ __set_errno (-err);
+ return -1;
}
return 0;
}
/* sem_post -- post to a POSIX semaphore. SPARC version.
- Copyright (C) 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
nr = ++*futex;
__sparc32_atomic_do_unlock24 (futex + 1);
}
- if (nr == 1)
+ int err = lll_futex_wake (futex, nr);
+ if (__builtin_expect (err, 0) < 0)
{
- int err = lll_futex_wake (futex, 1);
- if (__builtin_expect (err, 0) < 0)
- {
- __set_errno (-err);
- return -1;
- }
+ __set_errno (-err);
+ return -1;
}
return 0;
}
-/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
LOCK
xaddl %edx, (%rdi)
- testl %edx, %edx
- jne 2f
-
movl $SYS_futex, %eax
movl $FUTEX_WAKE, %esi
- movl $1, %edx
+ incl %edx
syscall
testq %rax, %rax
js 1f
-2: xorl %eax, %eax
+ xorl %eax, %eax
retq
1:
/* This file just defines the current version number of libc. */
-#define RELEASE "development"
-#define VERSION "2.5.90"
+#define RELEASE "stable"
+#define VERSION "2.6"
projects / thirdparty / glibc.git / commitdiff
