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| author | Ulrich Drepper <drepper@redhat.com> | 2006-04-27 18:17:50 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2006-04-27 18:17:50 +0000 |
| commit | a6375d1104c907dc4a26e780af4207b89f48a0a2 (patch) | |
| tree | a42e7d261c4299cfe231f5b4a09615efc1b6b215 | |
| parent | b8c8817c81068fe260688cfdfdcc0940d7e13e76 (diff) | |
| download | glibc-a6375d1104c907dc4a26e780af4207b89f48a0a2.tar.gz glibc-a6375d1104c907dc4a26e780af4207b89f48a0a2.tar.xz glibc-a6375d1104c907dc4a26e780af4207b89f48a0a2.zip | |
* sysdeps/unix/sysv/linux/timer_routines.c (timer_helper_thread):
Allocate new object which is passed to timer_sigev_thread so that the timer can be deleted before the new thread is scheduled.
| -rw-r--r-- | nptl/ChangeLog | 6 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/timer_routines.c | 36 |
2 files changed, 35 insertions, 7 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index c725b8d243..132b2d07ef 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,9 @@ +2006-04-27 Ulrich Drepper <drepper@redhat.com> + + * sysdeps/unix/sysv/linux/timer_routines.c (timer_helper_thread): + Allocate new object which is passed to timer_sigev_thread so that + the timer can be deleted before the new thread is scheduled. + 2006-04-26 Roland McGrath <roland@redhat.com> * sysdeps/x86_64/tls.h: Include <asm/prctl.h> inside [! __ASSEMBLER__]. diff --git a/nptl/sysdeps/unix/sysv/linux/timer_routines.c b/nptl/sysdeps/unix/sysv/linux/timer_routines.c index c180b27c96..a5eb442251 100644 --- a/nptl/sysdeps/unix/sysv/linux/timer_routines.c +++ b/nptl/sysdeps/unix/sysv/linux/timer_routines.c @@ -1,4 +1,4 @@ -/* 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 Ulrich Drepper <drepper@redhat.com>, 2003. @@ -27,6 +27,13 @@ #include "kernel-posix-timers.h" +struct thread_start_data +{ + void (*thrfunc) (sigval_t); + sigval_t sival; +}; + + #ifdef __NR_timer_create /* Helper thread to call the user-provided function. */ static void * @@ -40,10 +47,16 @@ timer_sigev_thread (void *arg) INTERNAL_SYSCALL_DECL (err); INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, NULL, _NSIG / 8); - struct timer *tk = (struct timer *) arg; + struct thread_start_data *td = (struct thread_start_data *) arg; + + void (*thrfunc) (sigval_t) = td->thrfunc; + sigval_t sival = td->sival; + + /* The TD object was allocated in timer_helper_thread. */ + free (td); /* Call the user-provided function. */ - tk->thrfunc (tk->sival); + thrfunc (sival); return NULL; } @@ -82,10 +95,19 @@ timer_helper_thread (void *arg) if (si.si_code == SI_TIMER) { struct timer *tk = (struct timer *) si.si_ptr; - - /* That the signal we are waiting for. */ - pthread_t th; - (void) pthread_create (&th, &tk->attr, timer_sigev_thread, tk); + struct thread_start_data *td = malloc (sizeof (*td)); + + /* There is not much we can do if the allocation fails. */ + if (td != NULL) + { + /* That is the signal we are waiting for. */ + td->thrfunc = tk->thrfunc; + td->sival = tk->sival; + + pthread_t th; + (void) pthread_create (&th, &tk->attr, timer_sigev_thread, + td); + } } else if (si.si_code == SI_TKILL) /* The thread is canceled. */ |