53 lines
920 B
C
53 lines
920 B
C
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// Test that fork fails gracefully.
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// Tiny executable so that the limit can be filling the proc table.
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#include "types.h"
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#include "stat.h"
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#include "user.h"
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#define N 1000
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void printf(int fd, const char *s, ...) {
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write(fd, s, strlen(s));
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}
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void forktest(void) {
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int n, pid;
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printf(1, "fork test\n");
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for (n = 0; n < N; n++) {
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pid = fork();
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if (pid < 0) {
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break;
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}
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if (pid == 0) {
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exit();
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}
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}
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if (n == N) {
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printf(1, "fork claimed to work N times!\n", N);
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exit();
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}
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for (; n > 0; n--) {
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if (wait() < 0) {
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printf(1, "wait stopped early\n");
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exit();
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}
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}
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if (wait() != -1) {
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printf(1, "wait got too many\n");
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exit();
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}
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printf(1, "fork test OK\n");
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}
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int main(int argc, char* argv[]) {
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forktest();
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exit();
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}
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