libdill: Structured Concurrency for C

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NAME

msleep - waits until deadline expires

SYNOPSIS

#include <libdill.h>

int msleep(
    int64_t deadline);

DESCRIPTION

This function blocks until the deadline expires or an error occurs. In the former case it returns zero.

deadline: A point in time when the operation should time out, in milliseconds. Use the now function to get your current point in time. 0 means immediate timeout, i.e., perform the operation if possible or return without blocking if not. -1 means no deadline, i.e., the call will block forever if the operation cannot be performed.

RETURN VALUE

In case of success the function returns 0. In case of error it returns -1 and sets errno to one of the values below.

ERRORS

ECANCELED: Current coroutine was canceled.

EXAMPLE

int rc = msleep(now() + 1000);
if(rc != 0) {
    perror("Cannot sleep");
    exit(1);
}
printf("Slept succefully for 1 second.\n");