diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/clock_getcpuclockid.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/clock_getcpuclockid.c | 56 |
1 files changed, 10 insertions, 46 deletions
diff --git a/sysdeps/unix/sysv/linux/clock_getcpuclockid.c b/sysdeps/unix/sysv/linux/clock_getcpuclockid.c index 1cfdf3489b..8700354a92 100644 --- a/sysdeps/unix/sysv/linux/clock_getcpuclockid.c +++ b/sysdeps/unix/sysv/linux/clock_getcpuclockid.c @@ -29,60 +29,24 @@ int clock_getcpuclockid (pid_t pid, clockid_t *clock_id) { -#ifdef __NR_clock_getres /* The clockid_t value is a simple computation from the PID. But we do a clock_getres call to validate it. */ const clockid_t pidclock = MAKE_PROCESS_CPUCLOCK (pid, CPUCLOCK_SCHED); -# if !(__ASSUME_POSIX_CPU_TIMERS > 0) - extern int __libc_missing_posix_cpu_timers attribute_hidden; - if (!__libc_missing_posix_cpu_timers) -# endif + INTERNAL_SYSCALL_DECL (err); + int r = INTERNAL_SYSCALL (clock_getres, err, 2, pidclock, NULL); + if (!INTERNAL_SYSCALL_ERROR_P (r, err)) { - INTERNAL_SYSCALL_DECL (err); - int r = INTERNAL_SYSCALL (clock_getres, err, 2, pidclock, NULL); - if (!INTERNAL_SYSCALL_ERROR_P (r, err)) - { - *clock_id = pidclock; - return 0; - } - - if (INTERNAL_SYSCALL_ERRNO (r, err) == EINVAL) - { -# if !(__ASSUME_POSIX_CPU_TIMERS > 0) - if (pidclock == MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED) - || INTERNAL_SYSCALL_ERROR_P (INTERNAL_SYSCALL - (clock_getres, err, 2, - MAKE_PROCESS_CPUCLOCK - (0, CPUCLOCK_SCHED), NULL), - err)) - /* The kernel doesn't support these clocks at all. */ - __libc_missing_posix_cpu_timers = 1; - else -# endif - /* The clock_getres system call checked the PID for us. */ - return ESRCH; - } - else - return INTERNAL_SYSCALL_ERRNO (r, err); + *clock_id = pidclock; + return 0; } -#endif - - /* We don't allow any process ID but our own. */ - if (pid != 0 && pid != getpid ()) - return EPERM; -#ifdef CLOCK_PROCESS_CPUTIME_ID - if (HAS_CPUCLOCK) + if (INTERNAL_SYSCALL_ERRNO (r, err) == EINVAL) { - /* Store the number. */ - *clock_id = CLOCK_PROCESS_CPUTIME_ID; - - return 0; + /* The clock_getres system call checked the PID for us. */ + return ESRCH; } -#endif - - /* We don't have a timer for that. */ - return ENOENT; + else + return INTERNAL_SYSCALL_ERRNO (r, err); } |