Tibor Nagy
23 lines
541 B
C
23 lines
541 B
C
#include <fcntl.h>
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#include <stdio.h>
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#include <sys/select.h>
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#include <unistd.h>
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int main(void) {
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int fd = open("select.c", 0, 0);
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fd_set read;
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FD_ZERO(&read);
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FD_SET(fd, &read);
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printf("Is set before? %d\n", FD_ISSET(fd, &read));
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// This should actually test TCP streams and stuff, but for now I'm simply
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// testing whether it ever returns or not.
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printf("Amount of things ready: %d\n", select(fd + 1, &read, NULL, NULL, NULL));
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printf("Is set after? %d\n", FD_ISSET(fd, &read));
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close(fd);
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}
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