xref: /aosp_15_r20/external/musl/src/unistd/alarm.c (revision c9945492fdd68bbe62686c5b452b4dc1be3f8453)
1*c9945492SAndroid Build Coastguard Worker #include <unistd.h>
2*c9945492SAndroid Build Coastguard Worker #include <sys/time.h>
3*c9945492SAndroid Build Coastguard Worker #include "syscall.h"
4*c9945492SAndroid Build Coastguard Worker 
alarm(unsigned seconds)5*c9945492SAndroid Build Coastguard Worker unsigned alarm(unsigned seconds)
6*c9945492SAndroid Build Coastguard Worker {
7*c9945492SAndroid Build Coastguard Worker 	struct itimerval it = { .it_value.tv_sec = seconds }, old = { 0 };
8*c9945492SAndroid Build Coastguard Worker 	setitimer(ITIMER_REAL, &it, &old);
9*c9945492SAndroid Build Coastguard Worker 	return old.it_value.tv_sec + !!old.it_value.tv_usec;
10*c9945492SAndroid Build Coastguard Worker }
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