63 lines
1.1 KiB
C
63 lines
1.1 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <assert.h>
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#include "spawn.h"
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int pidc = 0;
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pid_t *pidv = NULL;
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void spawn_init(void) {
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assert(pidc == 0);
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assert(pidv == NULL);
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}
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void spawn_destroy(void) {
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pid_t pid;
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int i;
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int rv;
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/* Kill children */
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for (i = 0; i < pidc; i++) {
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int status;
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pid = waitpid(pidv[i], &status, WNOHANG);
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if (pid) {
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continue;
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}
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rv = kill(pidv[i], SIGKILL);
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if (rv == -1) {
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fprintf(stderr, "kill: %s\n", strerror(errno));
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exit(1);
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}
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pid = waitpid(pidv[i], &status, 0);
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assert(pid == pidv[i]);
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}
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free(pidv);
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pidc = 0;
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pidv = NULL;
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}
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void spawn(spawn_function *fn, void *ptr) {
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pid_t pid;
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pid = fork();
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if (pid) {
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pidv = realloc(pidv, sizeof(pid_t) * (pidc + 1));
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pidv[pidc++] = pid;
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} else {
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fn(ptr);
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exit(0);
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}
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/* Give the fork some time to boot... */
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usleep(1000);
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}
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