mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-20 00:30:49 +00:00
25 lines
1009 B
C
25 lines
1009 B
C
#include <errno.h>
|
|
#include <pthread.h>
|
|
#include <time.h>
|
|
#include "syscall.h"
|
|
|
|
int clock_nanosleep(clockid_t clk, int flags, const struct timespec * req, struct timespec * rem)
|
|
{
|
|
if (clk == CLOCK_THREAD_CPUTIME_ID)
|
|
return EINVAL;
|
|
int old_cancel_type;
|
|
int status;
|
|
/// We cannot port __syscall_cp because musl has very limited cancellation point implementation.
|
|
/// For example, c++ destructors won't get called and exception unwinding isn't implemented.
|
|
/// Instead, we use normal __syscall here and turn on the asynchrous cancel mode to allow
|
|
/// cancel. This works because nanosleep doesn't contain any resource allocations or
|
|
/// deallocations.
|
|
pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &old_cancel_type);
|
|
if (clk == CLOCK_REALTIME && !flags)
|
|
status = -__syscall(SYS_nanosleep, req, rem);
|
|
else
|
|
status = -__syscall(SYS_clock_nanosleep, clk, flags, req, rem);
|
|
pthread_setcanceltype(old_cancel_type, NULL);
|
|
return status;
|
|
}
|