tools/testing/selftests/powerpc/signal/signal.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/powerpc/signal/signal.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/powerpc/signal/signal.c
Extension
.c
Size
2109 bytes
Lines
108
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

if (pid == -1) {
			perror("fork");
			exit(1);
		}
		if (pid == 0) {
			signal_self(ppid, SIGUSR1);
			exit(1);
		} else {
			alarm(0); /* Disable any pending */
			alarm(2);
			while (!signaled && !fail)
				asm volatile("": : :"memory");
			if (!signaled) {
				fprintf(stderr, "Didn't get signal from child\n");
				FAIL_IF(1); /* For the line number */
			}
			/* Otherwise we'll loop too fast and fork() will eventually fail */
			waitpid(pid, NULL, 0);
		}
	}

	for (i = 0; i < MAX_ATTEMPT; i++) {
		long rc;

		alarm(0); /* Disable any pending */
		signaled = 0;
		alarm(TIMEOUT);
		rc = signal_self(ppid, SIGUSR1);
		if (rc) {
			fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx",
					i, fail, rc);
			FAIL_IF(1); /* For the line number */
		}
		while (!signaled && !fail)
			asm volatile("": : :"memory");
		if (!signaled) {
			fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx",
					i, fail, rc);
			FAIL_IF(1); /* For the line number */
		}
	}

	return 0;
}

int main(void)
{
	test_harness_set_timeout(300);
	return test_harness(test_signal, "signal");
}

Annotation

Implementation Notes