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-rw-r--r--nptl/sysdeps/pthread/aio_misc.h73
-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h26
-rw-r--r--nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h10
-rw-r--r--nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h10
-rw-r--r--nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h25
5 files changed, 122 insertions, 22 deletions
diff --git a/nptl/sysdeps/pthread/aio_misc.h b/nptl/sysdeps/pthread/aio_misc.h
new file mode 100644
index 0000000000..5aeb34eb98
--- /dev/null
+++ b/nptl/sysdeps/pthread/aio_misc.h
@@ -0,0 +1,73 @@
+/* Copyright (C) 2006 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
+ 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. */
+
+/* We define a special synchronization primitive for AIO. POSIX
+ conditional variables would be ideal but the pthread_cond_*wait
+ operations do not return on EINTR. This is a requirement for
+ correct aio_suspend and lio_listio implementations. */
+
+#include <assert.h>
+#include <pthreadP.h>
+#include <lowlevellock.h>
+
+#define DONT_NEED_AIO_MISC_COND 1
+
+#define AIO_MISC_NOTIFY(waitlist) \
+ do { \
+ if (--*waitlist->counterp == 0) \
+ lll_futex_wake (waitlist->counterp, 1); \
+ } while (0)
+
+#define AIO_MISC_WAIT(result, futex, timeout, cancel) \
+ do { \
+ int oldval = futex; \
+ \
+ if (oldval != 0) \
+ { \
+ pthread_mutex_unlock (&__aio_requests_mutex); \
+ \
+ int oldtype; \
+ if (cancel) \
+ oldtype = LIBC_CANCEL_ASYNC (); \
+ \
+ int status; \
+ do \
+ { \
+ status = lll_futex_timed_wait (&futex, oldval, timeout); \
+ if (status != -EWOULDBLOCK) \
+ break; \
+ \
+ oldval = futex; \
+ } \
+ while (oldval != 0); \
+ \
+ if (cancel) \
+ LIBC_CANCEL_RESET (oldtype); \
+ \
+ if (status == -EINTR) \
+ result = EINTR; \
+ else if (status == -ETIMEDOUT) \
+ result = EAGAIN; \
+ else \
+ assert (status == 0 || status == -EWOULDBLOCK); \
+ \
+ pthread_mutex_lock (&__aio_requests_mutex); \
+ } \
+ } while (0)
+
+#include_next <aio_misc.h>
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
index b86f11c9b4..fd1ee4569d 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -66,17 +66,33 @@
#define lll_futex_wait(futex, val) \
- do { \
- int __ignore; \
+ ({ \
+ int __status; \
register __typeof (val) _val asm ("edx") = (val); \
__asm __volatile (LLL_EBX_LOAD \
LLL_ENTER_KERNEL \
LLL_EBX_LOAD \
- : "=a" (__ignore) \
+ : "=a" (__status) \
: "0" (SYS_futex), LLL_EBX_REG (futex), "S" (0), \
"c" (FUTEX_WAIT), "d" (_val), \
"i" (offsetof (tcbhead_t, sysinfo))); \
- } while (0)
+ __status; \
+ })
+
+
+#define lll_futex_timed_wait(futex, val, timeout) \
+ ({ \
+ int __status; \
+ register __typeof (val) _val asm ("edx") = (val); \
+ __asm __volatile (LLL_EBX_LOAD \
+ LLL_ENTER_KERNEL \
+ LLL_EBX_LOAD \
+ : "=a" (__status) \
+ : "0" (SYS_futex), LLL_EBX_REG (futex), "S" (timeout), \
+ "c" (FUTEX_WAIT), "d" (_val), \
+ "i" (offsetof (tcbhead_t, sysinfo))); \
+ __status; \
+ })
#define lll_futex_wake(futex, nr) \
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
index 84acf38434..dcbc0d6520 100644
--- a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
@@ -1,5 +1,5 @@
/* Cancellable system call stubs. Linux/PowerPC version.
- Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>, 2003.
@@ -15,8 +15,8 @@
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. */
+ Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
+ 02110-1301 USA. */
#include <sysdep.h>
#include <tls.h>
@@ -30,7 +30,6 @@
# define PSEUDO(name, syscall_name, args) \
.section ".text"; \
ENTRY (name) \
- cfi_startproc; \
SINGLE_THREAD_P; \
bne- .Lpseudo_cancel; \
.type __##syscall_name##_nocancel,@function; \
@@ -62,8 +61,7 @@
CGOTRESTORE; \
mtlr 4; \
mtcr 0; \
- addi 1,1,48; \
- cfi_endproc;
+ addi 1,1,48;
# define DOCARGS_0
# define UNDOCARGS_0
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
index 226aaafdce..83eb444ece 100644
--- a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
@@ -1,5 +1,5 @@
/* Cancellable system call stubs. Linux/PowerPC64 version.
- Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>, 2003.
@@ -15,8 +15,8 @@
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. */
+ Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
+ 02110-1301 USA. */
#include <sysdep.h>
#include <tls.h>
@@ -36,7 +36,6 @@
# define PSEUDO(name, syscall_name, args) \
.section ".text"; \
ENTRY (name) \
- cfi_startproc; \
SINGLE_THREAD_P; \
bne- .Lpseudo_cancel; \
.type DASHDASHPFX(syscall_name##_nocancel),@function; \
@@ -66,8 +65,7 @@
ld 3,64(1); \
mtlr 9; \
mtcr 0; \
- addi 1,1,128; \
- cfi_endproc;
+ addi 1,1,128;
# define DOCARGS_0
# define UNDOCARGS_0
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
index 40c2518af6..ebcfe6eef1 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -47,16 +47,31 @@
#define lll_futex_wait(futex, val) \
- do { \
- int __ignore; \
+ ({ \
+ int __status; \
register __typeof (val) _val asm ("edx") = (val); \
__asm __volatile ("xorq %%r10, %%r10\n\t" \
"syscall" \
- : "=a" (__ignore) \
+ : "=a" (__status) \
: "0" (SYS_futex), "D" (futex), "S" (FUTEX_WAIT), \
"d" (_val) \
: "memory", "cc", "r10", "r11", "cx"); \
- } while (0)
+ __status; \
+ })
+
+
+#define lll_futex_timed_wait(futex, val, timeout) \
+ ({ \
+ register const struct timespec *__to __asm__ ("r10") = timeout; \
+ int __status; \
+ register __typeof (val) _val asm ("edx") = (val); \
+ __asm __volatile ("syscall" \
+ : "=a" (__status) \
+ : "0" (SYS_futex), "D" (futex), "S" (FUTEX_WAIT), \
+ "d" (_val), "r" (__to) \
+ : "memory", "cc", "r11", "cx"); \
+ __status; \
+ })
#define lll_futex_wake(futex, nr) \
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-11 17:41:11 +0000