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authorUlrich Drepper <drepper@redhat.com>2003-06-06 17:34:54 +0000
committerUlrich Drepper <drepper@redhat.com>2003-06-06 17:34:54 +0000
commitc3f90e26a5160c3fe287c4283e7a2bc1ff54b1a9 (patch)
tree1164126ce1a33b340459c03a100011566853ed9b
parent3a370de88f9ca928a90d1fa88afaf5d17d939fb6 (diff)
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Update.
* sysdeps/unix/sysv/linux/sleep.c (__sleep): Use nanosleep syscall directly to avoid cancellation in the regular nanosleep implementation.
-rw-r--r--ChangeLog4
-rw-r--r--linuxthreads/ChangeLog6
-rw-r--r--linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h14
-rw-r--r--sysdeps/unix/sysv/linux/sleep.c16
4 files changed, 28 insertions, 12 deletions
diff --git a/ChangeLog b/ChangeLog
index 342a2a1..2295357 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
2003-06-06 Ulrich Drepper <drepper@redhat.com>
+ * sysdeps/unix/sysv/linux/sleep.c (__sleep): Use nanosleep syscall
+ directly to avoid cancellation in the regular nanosleep
+ implementation.
+
* sysdeps/unix/sysv/linux/i386/sysdep.h (ASMFMT_2): Only allow
%edx for first parameter. This means no pushl and therefore the
unwind info isn't screwed up.
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index 9dee60f..a7d422e 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,3 +1,9 @@
+2003-06-06 Ulrich Drepper <drepper@redhat.com>
+
+ * sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: New sequences for
+ 5+ arg syscalls only needed for PIC.
+ Patch by Ralph Siemsen <ralphs@netwinder.org>.
+
2003-06-05 Richard Henderson <rth@redhat.com>
* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h (PSEUDO): Use
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h b/linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
index d2043aa..92d8460 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
+++ b/linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
@@ -26,12 +26,14 @@
/* We push lr onto the stack, so we have to use ldmib instead of ldmia
to find the saved arguments. */
-#undef DOARGS_5
-#undef DOARGS_6
-#undef DOARGS_7
-#define DOARGS_5 str r4, [sp, $-4]!; ldr r4, [sp, $8];
-#define DOARGS_6 mov ip, sp; stmfd sp!, {r4, r5}; ldmib ip, {r4, r5};
-#define DOARGS_7 mov ip, sp; stmfd sp!, {r4, r5, r6}; ldmib ip, {r4, r5, r6};
+# ifdef PIC
+# undef DOARGS_5
+# undef DOARGS_6
+# undef DOARGS_7
+# define DOARGS_5 str r4, [sp, $-4]!; ldr r4, [sp, $8];
+# define DOARGS_6 mov ip, sp; stmfd sp!, {r4, r5}; ldmib ip, {r4, r5};
+# define DOARGS_7 mov ip, sp; stmfd sp!, {r4, r5, r6}; ldmib ip, {r4, r5, r6};
+# endif
# undef PSEUDO_RET
# define PSEUDO_RET \
diff --git a/sysdeps/unix/sysv/linux/sleep.c b/sysdeps/unix/sysv/linux/sleep.c
index 0cf6be2..38c1973 100644
--- a/sysdeps/unix/sysv/linux/sleep.c
+++ b/sysdeps/unix/sysv/linux/sleep.c
@@ -1,5 +1,5 @@
/* Implementation of the POSIX sleep function using nanosleep.
- Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
@@ -24,8 +24,12 @@
#include <unistd.h>
/* We are going to use the `nanosleep' syscall of the kernel. But the
- kernel does not implement the sstupid SysV SIGCHLD vs. SIG_IGN
- behaviour for this syscall. Therefore we have to emulate it here. */
+ kernel does not implement the stupid SysV SIGCHLD vs. SIG_IGN
+ behaviour for this syscall. Therefore we have to emulate it here.
+
+ Also note that we use the syscall directly instead of using the
+ __nanosleep function. The reason is that nanosleep() is a cancellation
+ point while sleep() isn't. */
unsigned int
__sleep (unsigned int seconds)
{
@@ -67,7 +71,7 @@ __sleep (unsigned int seconds)
if (oact.sa_handler == SIG_IGN)
{
/* We should leave SIGCHLD blocked. */
- result = __nanosleep (&ts, &ts);
+ result = INLINE_SYSCALL (nanosleep, 2, &ts, &ts);
saved_errno = errno;
/* Restore the original signal mask. */
@@ -78,11 +82,11 @@ __sleep (unsigned int seconds)
{
/* We should unblock SIGCHLD. Restore the original signal mask. */
(void) __sigprocmask (SIG_SETMASK, &oset, (sigset_t *) NULL);
- result = __nanosleep (&ts, &ts);
+ result = INLINE_SYSCALL (nanosleep, 2, &ts, &ts);
}
}
else
- result = __nanosleep (&ts, &ts);
+ result = INLINE_SYSCALL (nanosleep, 2, &ts, &ts);
if (result != 0)
/* Round remaining time. */