summaryrefslogtreecommitdiffstats
path: root/tools/testing/selftests/powerpc/harness.c
blob: 66d31de60b9ae93ee53175b33983e3d86d67795f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
/*
 * Copyright 2013, Michael Ellerman, IBM Corp.
 * Licensed under GPLv2.
 */

#include <errno.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <elf.h>
#include <fcntl.h>
#include <link.h>
#include <sys/stat.h>

#include "subunit.h"
#include "utils.h"

#define KILL_TIMEOUT	5

static uint64_t timeout = 120;

int run_test(int (test_function)(void), char *name)
{
	bool terminated;
	int rc, status;
	pid_t pid;

	/* Make sure output is flushed before forking */
	fflush(stdout);

	pid = fork();
	if (pid == 0) {
		setpgid(0, 0);
		exit(test_function());
	} else if (pid == -1) {
		perror("fork");
		return 1;
	}

	setpgid(pid, pid);

	/* Wake us up in timeout seconds */
	alarm(timeout);
	terminated = false;

wait:
	rc = waitpid(pid, &status, 0);
	if (rc == -1) {
		if (errno != EINTR) {
			printf("unknown error from waitpid\n");
			return 1;
		}

		if (terminated) {
			printf("!! force killing %s\n", name);
			kill(-pid, SIGKILL);
			return 1;
		} else {
			printf("!! killing %s\n", name);
			kill(-pid, SIGTERM);
			terminated = true;
			alarm(KILL_TIMEOUT);
			goto wait;
		}
	}

	/* Kill anything else in the process group that is still running */
	kill(-pid, SIGTERM);

	if (WIFEXITED(status))
		status = WEXITSTATUS(status);
	else {
		if (WIFSIGNALED(status))
			printf("!! child died by signal %d\n", WTERMSIG(status));
		else
			printf("!! child died by unknown cause\n");

		status = 1; /* Signal or other */
	}

	return status;
}

static void alarm_handler(int signum)
{
	/* Jut wake us up from waitpid */
}

static struct sigaction alarm_action = {
	.sa_handler = alarm_handler,
};

void test_harness_set_timeout(uint64_t time)
{
	timeout = time;
}

int test_harness(int (test_function)(void), char *name)
{
	int rc;

	test_start(name);
	test_set_git_version(GIT_VERSION);

	if (sigaction(SIGALRM, &alarm_action, NULL)) {
		perror("sigaction");
		test_error(name);
		return 1;
	}

	rc = run_test(test_function, name);

	if (rc == MAGIC_SKIP_RETURN_VALUE) {
		test_skip(name);
		/* so that skipped test is not marked as failed */
		rc = 0;
	} else
		test_finish(name, rc);

	return rc;
}