Merge "logcat: test: add clear and blocking check" (ca1e3438) · Commits · e / os / android_system_core

logcat/tests/logcat_test.cpp

+95 −9

Original line number	Diff line number	Diff line
		@@ -319,12 +319,16 @@ static void caught_blocking(int signum)

		TEST(logcat, blocking) {
		FILE *fp;
		unsigned long long v = 0xDEADBEEFA55A0000ULL;
		unsigned long long v = 0xDEADBEEFA55F0000ULL;

		pid_t pid = getpid();

		v += pid & 0xFFFF;

		LOG_FAILURE_RETRY(__android_log_btwrite(0, EVENT_TYPE_LONG, &v, sizeof(v)));

		v &= 0xFFFFFFFFFFFAFFFFULL;

		ASSERT_EQ(0, NULL == (fp = popen(
		"( trap exit HUP QUIT INT PIPE KILL ; sleep 6; echo DONE )&"
		" logcat -b events 2>&1",
		@@ -341,12 +345,12 @@ TEST(logcat, blocking) {
		while (fgets(buffer, sizeof(buffer), fp)) {
		alarm(2);

		++count;

		if (!strncmp(buffer, "DONE", 4)) {
		break;
		}

		++count;

		int p;
		unsigned long long l;

		@@ -369,7 +373,7 @@ TEST(logcat, blocking) {

		pclose(fp);

		ASSERT_LT(10, count);
		ASSERT_LE(2, count);

		ASSERT_EQ(1, signals);
		}
		@@ -385,12 +389,16 @@ static void caught_blocking_tail(int signum)

		TEST(logcat, blocking_tail) {
		FILE *fp;
		unsigned long long v = 0xA55ADEADBEEF0000ULL;
		unsigned long long v = 0xA55FDEADBEEF0000ULL;

		pid_t pid = getpid();

		v += pid & 0xFFFF;

		LOG_FAILURE_RETRY(__android_log_btwrite(0, EVENT_TYPE_LONG, &v, sizeof(v)));

		v &= 0xFFFAFFFFFFFFFFFFULL;

		ASSERT_EQ(0, NULL == (fp = popen(
		"( trap exit HUP QUIT INT PIPE KILL ; sleep 6; echo DONE )&"
		" logcat -b events -T 5 2>&1",
		@@ -407,12 +415,12 @@ TEST(logcat, blocking_tail) {
		while (fgets(buffer, sizeof(buffer), fp)) {
		alarm(2);

		++count;

		if (!strncmp(buffer, "DONE", 4)) {
		break;
		}

		++count;

		int p;
		unsigned long long l;

		@@ -431,13 +439,91 @@ TEST(logcat, blocking_tail) {
		alarm(0);
		signal(SIGALRM, SIG_DFL);

		/* Generate SIGPIPE */
		// Generate SIGPIPE
		fclose(fp);
		caught_blocking_tail(0);

		pclose(fp);

		ASSERT_LT(5, count);
		ASSERT_LE(2, count);

		ASSERT_EQ(1, signals);
		}

		static void caught_blocking_clear(int signum)
		{
		unsigned long long v = 0xDEADBEEFA55C0000ULL;

		v += getpid() & 0xFFFF;

		LOG_FAILURE_RETRY(__android_log_btwrite(0, EVENT_TYPE_LONG, &v, sizeof(v)));
		}

		TEST(logcat, blocking_clear) {
		FILE *fp;
		unsigned long long v = 0xDEADBEEFA55C0000ULL;

		pid_t pid = getpid();

		v += pid & 0xFFFF;

		// This test is racey; an event occurs between clear and dump.
		// We accept that we will get a false positive, but never a false negative.
		ASSERT_EQ(0, NULL == (fp = popen(
		"( trap exit HUP QUIT INT PIPE KILL ; sleep 6; echo DONE )&"
		" logcat -b events -c 2>&1 ;"
		" logcat -b events 2>&1",
		"r")));

		char buffer[5120];

		int count = 0;

		int signals = 0;

		signal(SIGALRM, caught_blocking_clear);
		alarm(2);
		while (fgets(buffer, sizeof(buffer), fp)) {
		alarm(2);

		if (!strncmp(buffer, "clearLog: ", 10)) {
		fprintf(stderr, "WARNING: Test lacks permission to run :-(\n");
		count = signals = 1;
		break;
		}

		if (!strncmp(buffer, "DONE", 4)) {
		break;
		}

		++count;

		int p;
		unsigned long long l;

		if ((2 != sscanf(buffer, "I/[0] ( %u): %lld", &p, &l))
		\|\| (p != pid)) {
		continue;
		}

		if (l == v) {
		if (count > 1) {
		fprintf(stderr, "WARNING: Possible false positive\n");
		}
		++signals;
		break;
		}
		}
		alarm(0);
		signal(SIGALRM, SIG_DFL);

		// Generate SIGPIPE
		fclose(fp);
		caught_blocking_clear(0);

		pclose(fp);

		ASSERT_LE(1, count);

		ASSERT_EQ(1, signals);
		}