CHECK_C_SOURCE_RUNS(
"
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include <linux/futex.h>
#include <unistd.h>
#include <sys/syscall.h>
int futex_wait(int* futex, int v) {
return(syscall(SYS_futex, futex, FUTEX_WAIT_PRIVATE, v, NULL, NULL, 0));
}
int futex_signal(int* futex) {
return(syscall(SYS_futex, futex, FUTEX_WAKE, 1, NULL, NULL, 0));
}
int main() {
int ret;
int m = 1;
/* It is setup to fail and return EWOULDBLOCK. */
ret = futex_wait(&m, 0);
assert(ret == -1 && errno == EWOULDBLOCK);
/* Shouldn't wake up any threads. */
assert(futex_signal(&m) == 0);
return(0);
}"
HAVE_IB_LINUX_FUTEX)
percona/percona-server
storage/innobase/innodb.cmake
:194