diff options
Diffstat (limited to 'sysdeps/unix/clock_settime.c')
| -rw-r--r-- | sysdeps/unix/clock_settime.c | 92 |
1 files changed, 48 insertions, 44 deletions
diff --git a/sysdeps/unix/clock_settime.c b/sysdeps/unix/clock_settime.c index 0194999b36..a93be6349b 100644 --- a/sysdeps/unix/clock_settime.c +++ b/sysdeps/unix/clock_settime.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. +/* Copyright (C) 1999-2004, 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 @@ -36,6 +36,43 @@ extern void __pthread_clock_settime (clockid_t clock_id, hp_timing_t offset) #endif +#if HP_TIMING_AVAIL +static int +hp_timing_settime (clockid_t clock_id, const struct timespec *tp) +{ + hp_timing_t tsc; + hp_timing_t usertime; + + /* First thing is to get the current time. */ + HP_TIMING_NOW (tsc); + + if (__builtin_expect (freq == 0, 0)) + { + /* This can only happen if we haven't initialized the `freq' + variable yet. Do this now. We don't have to protect this + code against multiple execution since all of them should lead + to the same result. */ + freq = __get_clockfreq (); + if (__builtin_expect (freq == 0, 0)) + /* Something went wrong. */ + return -1; + } + + /* Convert the user-provided time into CPU ticks. */ + usertime = tp->tv_sec * freq + (tp->tv_nsec * freq) / 1000000000ull; + + /* Determine the offset and use it as the new base value. */ + if (clock_id == CLOCK_PROCESS_CPUTIME_ID + || __pthread_clock_settime == NULL) + GL(dl_cpuclock_offset) = tsc - usertime; + else + __pthread_clock_settime (clock_id, tsc - usertime); + + return 0; +} +#endif + + /* Set CLOCK to value TP. */ int clock_settime (clockid_t clock_id, const struct timespec *tp) @@ -70,55 +107,22 @@ clock_settime (clockid_t clock_id, const struct timespec *tp) #endif default: -#if HP_TIMING_AVAIL - if ((clock_id & ((1 << CLOCK_IDFIELD_SIZE) - 1)) - != CLOCK_THREAD_CPUTIME_ID) +#ifdef SYSDEP_SETTIME_CPU + SYSDEP_SETTIME_CPU; #endif +#ifndef HANDLED_CPUTIME +# if HP_TIMING_AVAIL + if (CPUCLOCK_WHICH (clock_id) == CLOCK_PROCESS_CPUTIME_ID + || CPUCLOCK_WHICH (clock_id) == CLOCK_THREAD_CPUTIME_ID) + retval = hp_timing_settime (clock_id, tp); + else +# endif { __set_errno (EINVAL); retval = -1; - break; } - -#if HP_TIMING_AVAIL - /* FALLTHROUGH. */ - case CLOCK_PROCESS_CPUTIME_ID: - { - hp_timing_t tsc; - hp_timing_t usertime; - - /* First thing is to get the current time. */ - HP_TIMING_NOW (tsc); - - if (__builtin_expect (freq == 0, 0)) - { - /* This can only happen if we haven't initialized the `freq' - variable yet. Do this now. We don't have to protect this - code against multiple execution since all of them should - lead to the same result. */ - freq = __get_clockfreq (); - if (__builtin_expect (freq == 0, 0)) - { - /* Something went wrong. */ - retval = -1; - break; - } - } - - /* Convert the user-provided time into CPU ticks. */ - usertime = tp->tv_sec * freq + (tp->tv_nsec * freq) / 1000000000ull; - - /* Determine the offset and use it as the new base value. */ - if (clock_id == CLOCK_PROCESS_CPUTIME_ID - || __pthread_clock_settime == NULL) - GL(dl_cpuclock_offset) = tsc - usertime; - else - __pthread_clock_settime (clock_id, tsc - usertime); - - retval = 0; - } - break; #endif + break; } return retval; |