diff options
| author | Dmitry Chestnykh <dm.chestnykh@gmail.com> | 2024-04-15 15:31:58 +0300 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2024-04-18 14:52:06 +0200 |
| commit | 3a36a3100af2ee1cca69345af83228757e8c55fe (patch) | |
| tree | 6ec6990dba241b65a925eb581ef59bcb3a74e843 /libc/sysdeps/linux/common/clock_gettime.c | |
| parent | 0694e42c9c9789bd87fba7e6639b21d2f28e09d4 (diff) | |
Fix vDSO support for all supported architectures.
- Cleanup dl-vdso.c code.
- Pass `void *` as first arg to `load_vdso()`, using 32-bit type
is completely wrong on 64bit architectures.
- Split libc code and vDSO-related code.
Move arch-specific implementations into separate files.
The performance improvement is for example 50-60 times on ARMv7
and about 4 times on x86_64.
Signed-off-by: Dmitry Chestnykh <dm.chestnykh@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux/common/clock_gettime.c')
| -rw-r--r-- | libc/sysdeps/linux/common/clock_gettime.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/libc/sysdeps/linux/common/clock_gettime.c b/libc/sysdeps/linux/common/clock_gettime.c index 4d787b9b7..b924d860b 100644 --- a/libc/sysdeps/linux/common/clock_gettime.c +++ b/libc/sysdeps/linux/common/clock_gettime.c @@ -11,10 +11,14 @@ #include <sys/syscall.h> #include <time.h> +#ifdef __VDSO_SUPPORT__ +#include "ldso.h" +#endif + #if defined(__UCLIBC_USE_TIME64__) && defined(__NR_clock_gettime64) #include "internal/time64_helpers.h" -int clock_gettime(clockid_t clock_id, struct timespec *tp) +int __libc_clock_gettime(clockid_t clock_id, struct timespec *tp) { struct __ts64_struct __ts64; int __ret = INLINE_SYSCALL(clock_gettime64, 2, clock_id, &__ts64); @@ -26,11 +30,14 @@ int clock_gettime(clockid_t clock_id, struct timespec *tp) return __ret; } #elif defined(__NR_clock_gettime) -_syscall2(int, clock_gettime, clockid_t, clock_id, struct timespec*, tp) +int __libc_clock_gettime(clockid_t clock_id, struct timespec *tp) +{ + return INLINE_SYSCALL(clock_gettime, 2, clock_id, tp); +} #else # include <sys/time.h> -int clock_gettime(clockid_t clock_id, struct timespec* tp) +int __libc_clock_gettime(clockid_t clock_id, struct timespec* tp) { struct timeval tv; int retval = -1; @@ -53,3 +60,12 @@ int clock_gettime(clockid_t clock_id, struct timespec* tp) return retval; } #endif + +int clock_gettime(clockid_t clock_id, struct timespec *tp) +{ +#if defined(__VDSO_SUPPORT__) && defined(ARCH_VDSO_CLOCK_GETTIME) + return ARCH_VDSO_CLOCK_GETTIME(clock_id, tp); +#else + return __libc_clock_gettime(clock_id, tp); +#endif +} |