TEST(libbacktrace, ptrace_ignore_frames) {
pid_t pid;
if ((pid = fork()) == 0) {
ASSERT_NE(test_level_one(1, 2, 3, 4, NULL, NULL), 0);
exit(1);
}
VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, ReadyLevelBacktrace, VerifyProcessIgnoreFrames);
kill(pid, SIGKILL);
int status;
ASSERT_EQ(waitpid(pid, &status, 0), pid);
}
TEST(libbacktrace, ptrace_trace) {
pid_t pid;
if ((pid = fork()) == 0) {
ASSERT_NE(test_level_one(1, 2, 3, 4, NULL, NULL), 0);
exit(1);
}
VerifyProcTest(pid, -1, ReadyLevelBacktrace, VerifyLevelDump);
kill(pid, SIGKILL);
int status;
ASSERT_EQ(waitpid(pid, &status, 0), pid);
}
TEST(libbacktrace, ptrace_max_trace) {
pid_t pid;
if ((pid = fork()) == 0) {
ASSERT_NE(test_recursive_call(MAX_BACKTRACE_FRAMES+10, NULL, NULL), 0);
exit(1);
}
VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, ReadyMaxBacktrace, VerifyMaxDump);
kill(pid, SIGKILL);
int status;
ASSERT_EQ(waitpid(pid, &status, 0), pid);
}
TEST(libbacktrace, ptrace_trace_shared_map) {
pid_t pid;
if ((pid = fork()) == 0) {
ASSERT_NE(test_level_one(1, 2, 3, 4, NULL, NULL), 0);
exit(1);
}
VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, true, ReadyLevelBacktrace, VerifyLevelDump);
kill(pid, SIGKILL);
int status;
ASSERT_EQ(waitpid(pid, &status, 0), pid);
}
TEST(libbacktrace, ptrace_threads) {
pid_t pid;
if ((pid = fork()) == 0) {
for (size_t i = 0; i < NUM_PTRACE_THREADS; i++) {
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_t thread;
ASSERT_TRUE(pthread_create(&thread, &attr, PtraceThreadLevelRun, NULL) == 0);
}
ASSERT_NE(test_level_one(1, 2, 3, 4, NULL, NULL), 0);
exit(1);
}
// Check to see that all of the threads are running before unwinding.
std::vector<pid_t> threads;
uint64_t start = NanoTime();
do {
usleep(US_PER_MSEC);
threads.clear();
GetThreads(pid, &threads);
} while ((threads.size() != NUM_PTRACE_THREADS + 1) &&
((NanoTime() - start) <= 5 * NS_PER_SEC));
ASSERT_EQ(threads.size(), static_cast<size_t>(NUM_PTRACE_THREADS + 1));
ASSERT_TRUE(ptrace(PTRACE_ATTACH, pid, 0, 0) == 0);
WaitForStop(pid);
for (std::vector<int>::const_iterator it = threads.begin(); it != threads.end(); ++it) {
// Skip the current forked process, we only care about the threads.
if (pid == *it) {
continue;
}
VerifyProcTest(pid, *it, ReadyLevelBacktrace, VerifyLevelDump);
}
ASSERT_TRUE(ptrace(PTRACE_DETACH, pid, 0, 0) == 0);
kill(pid, SIGKILL);
int status;
ASSERT_EQ(waitpid(pid, &status, 0), pid);
}