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| author | Roland McGrath <roland@gnu.org> | 2005-04-27 08:01:41 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2005-04-27 08:01:41 +0000 |
| commit | 2f4f3bd4a9ad805383b278e5b975971ca15c7a77 (patch) | |
| tree | 86e86b058694d53779f2c2038b42b334bfce401d /sysdeps/unix/sysv/linux/kernel-posix-cpu-timers.h | |
| parent | 0f888d8ec6e038895be5d0a562d90be5e930a88a (diff) | |
| download | glibc-2f4f3bd4a9ad805383b278e5b975971ca15c7a77.tar.gz | |
2005-04-27 Roland McGrath <roland@redhat.com>
* sysdeps/unix/sysv/linux/kernel-posix-cpu-timers.h: New file.
* sysdeps/unix/sysv/linux/clock_getcpuclockid.c: New file.
* sysdeps/unix/sysv/linux/ia64/clock_getcpuclockid.c
(HAS_CPUCLOCK): New macro.
(clock_getcpuclockid): Function removed.
#include the new linux file to define it instead.
* sysdeps/unix/clock_gettime.c [HP_TIMING_AVAIL] (hp_timing_gettime):
New function, broken out of ...
(clock_gettime) [HP_TIMING_AVAIL]: ... here. Call it.
(realtime_gettime): New function, broken out of ...
(clock_gettime) [! HANDLED_REALTIME]: ... here. Call it.
(clock_gettime) [SYSDEP_GETTIME_CPU]: Use new macro in default case.
* sysdeps/unix/sysv/linux/clock_gettime.c (SYSCALL_GETTIME): New macro.
(SYSDEP_GETTIME_CPUTIME): New macro.
(SYSDEP_GETTIME): Use both.
[! __ASSUME_POSIX_TIMERS] (maybe_syscall_gettime): New function, broken
out of ...
(SYSDEP_GETTIME): ... here. Use it.
[__NR_clock_gettime] (HANDLED_CPUTIME): Define it.
(SYSDEP_GETTIME_CPUTIME): New macro. Handle CPU timers by trying
kernel support and falling back to hp-timing code.
* sysdeps/posix/clock_getres.c
[HP_TIMING_AVAIL] (hp_timing_getres): New function, broken out of ...
(clock_getres) [HP_TIMING_AVAIL]: ... here. Call it.
(realtime_getres): New function, broken out of ...
(clock_getres) [! HANDLED_REALTIME]: ... here. Call it.
(clock_getres) [SYSDEP_GETRES_CPU]: Use new macro in default case.
* sysdeps/unix/sysv/linux/clock_getres.c (SYSCALL_GETRES): New macro.
(SYSDEP_GETRES_CPUTIME): New macro.
(SYSDEP_GETRES): Use both.
[! __ASSUME_POSIX_TIMERS] (maybe_syscall_getres): New function, broken
out of ...
(SYSDEP_GETRES): ... here. Use it.
[__NR_clock_getres] (HANDLED_CPUTIME): Define it.
(SYSDEP_GETRES_CPUTIME): New macro. Handle CPU timers by trying
kernel support and falling back to hp-timing code.
* sysdeps/unix/sysv/linux/clock_nanosleep.c: Handle
CLOCK_PROCESS_CPUTIME_ID and CLOCK_PROCESS_THREAD_ID specially,
translating to the kernel clockid_t for our own process/thread clock.
Diffstat (limited to 'sysdeps/unix/sysv/linux/kernel-posix-cpu-timers.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/kernel-posix-cpu-timers.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/kernel-posix-cpu-timers.h b/sysdeps/unix/sysv/linux/kernel-posix-cpu-timers.h new file mode 100644 index 0000000000..164a90ddeb --- /dev/null +++ b/sysdeps/unix/sysv/linux/kernel-posix-cpu-timers.h @@ -0,0 +1,18 @@ +/* Parameters for the Linux kernel ABI for CPU clocks. */ + +#define CPUCLOCK_PID(clock) ((pid_t) ~((clock) >> 3)) +#define CPUCLOCK_PERTHREAD(clock) \ + (((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0) +#define CPUCLOCK_PID_MASK 7 +#define CPUCLOCK_PERTHREAD_MASK 4 +#define CPUCLOCK_WHICH(clock) ((clock) & (clockid_t) CPUCLOCK_CLOCK_MASK) +#define CPUCLOCK_CLOCK_MASK 3 +#define CPUCLOCK_PROF 0 +#define CPUCLOCK_VIRT 1 +#define CPUCLOCK_SCHED 2 +#define CPUCLOCK_MAX 3 + +#define MAKE_PROCESS_CPUCLOCK(pid, clock) \ + ((~(clockid_t) (pid) << 3) | (clockid_t) (clock)) +#define MAKE_THREAD_CPUCLOCK(tid, clock) \ + MAKE_PROCESS_CPUCLOCK((tid), (clock) | CPUCLOCK_PERTHREAD_MASK) |