cosmopolitan/examples/pause.c
2023-10-13 04:38:45 -07:00

37 lines
1.3 KiB
C

#if 0
/*─────────────────────────────────────────────────────────────────╗
│ To the extent possible under law, Justine Tunney has waived │
│ all copyright and related or neighboring rights to this file, │
│ as it is written in the following disclaimers: │
│ • http://unlicense.org/ │
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "libc/calls/calls.h"
#include "libc/calls/struct/sigaction.h"
#include "libc/fmt/itoa.h"
#include "libc/str/str.h"
volatile int g_sig;
void OnSig(int sig) {
g_sig = sig;
}
int main(int argc, char *argv[]) {
// listen for all signals
for (int sig = 1; sig <= NSIG; ++sig) {
signal(sig, OnSig);
}
// wait for a signal
char ibuf[12];
FormatInt32(ibuf, getpid());
tinyprint(2, "waiting for signal to be sent to ", ibuf, "\n", NULL);
pause();
// report the signal
tinyprint(1, "got ", strsignal(g_sig), "\n", NULL);
}