diff options
Diffstat (limited to 'linuxthreads/ptclock_settime.c')
| -rw-r--r-- | linuxthreads/ptclock_settime.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/linuxthreads/ptclock_settime.c b/linuxthreads/ptclock_settime.c index e160475932..a4f218c771 100644 --- a/linuxthreads/ptclock_settime.c +++ b/linuxthreads/ptclock_settime.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2001 Free Software Foundation, Inc. +/* Copyright (C) 2001, 2004 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 @@ -16,18 +16,40 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <errno.h> #include <time.h> #include <libc-internal.h> #include "internals.h" +#include "spinlock.h" #if HP_TIMING_AVAIL -void -__pthread_clock_settime (hp_timing_t offset) +int +__pthread_clock_settime (clockid_t clock_id, hp_timing_t offset) { pthread_descr self = thread_self (); + pthread_t thread = ((unsigned int) clock_id) >> CLOCK_IDFIELD_SIZE; + const unsigned int mask = ~0U >> CLOCK_IDFIELD_SIZE; - /* Compute the offset since the start time of the process. */ - THREAD_SETMEM (self, p_cpuclock_offset, offset); + if (thread == 0 || (THREAD_GETMEM (self, p_tid) & mask) == thread) + /* Our own clock. */ + THREAD_SETMEM (self, p_cpuclock_offset, offset); + else + { + pthread_descr th; + pthread_handle handle = thread_handle (thread); + __pthread_lock (&handle->h_lock, NULL); + th = handle->h_descr; + if (th == NULL || (th->p_tid & mask) != thread || th->p_terminated) + { + __pthread_unlock (&handle->h_lock); + __set_errno (EINVAL); + return -1; + } + th->p_cpuclock_offset = offset; + __pthread_unlock (&handle->h_lock); + } + + return 0; } #endif |