TEST(libbacktrace, thread_level_trace) {
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
thread_t thread_data = { 0, 0, 0 };
pthread_t thread;
ASSERT_TRUE(pthread_create(&thread, &attr, ThreadLevelRun, &thread_data) == 0);
// Wait up to 2 seconds for the tid to be set.
ASSERT_TRUE(WaitForNonZero(&thread_data.state, 2));
// Save the current signal action and make sure it is restored afterwards.
struct sigaction cur_action;
ASSERT_TRUE(sigaction(SIGURG, NULL, &cur_action) == 0);
UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), thread_data.tid));
ASSERT_TRUE(backtrace.get() != NULL);
ASSERT_TRUE(backtrace->Unwind(0));
VerifyLevelDump(backtrace.get());
// Tell the thread to exit its infinite loop.
android_atomic_acquire_store(0, &thread_data.state);
// Verify that the old action was restored.
struct sigaction new_action;
ASSERT_TRUE(sigaction(SIGURG, NULL, &new_action) == 0);
EXPECT_EQ(cur_action.sa_sigaction, new_action.sa_sigaction);
EXPECT_EQ(cur_action.sa_flags, new_action.sa_flags);
}
void VerifyLevelThread(void*) {
UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), gettid()));
ASSERT_TRUE(backtrace.get() != NULL);
ASSERT_TRUE(backtrace->Unwind(0));
VerifyLevelDump(backtrace.get());
}
void VerifyLevelBacktrace(void*) {
UniquePtr<Backtrace> backtrace(
Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
ASSERT_TRUE(backtrace.get() != NULL);
ASSERT_TRUE(backtrace->Unwind(0));
VerifyLevelDump(backtrace.get());
}
void VerifyLevelThread(void*) {
backtrace_context_t context;
ASSERT_TRUE(backtrace_create_context(&context, getpid(), gettid(), 0));
VerifyLevelDump(context.backtrace);
backtrace_destroy_context(&context);
}
void VerifyLevelBacktrace(void*) {
backtrace_context_t context;
ASSERT_TRUE(backtrace_create_context(&context, -1, -1, 0));
VerifyLevelDump(context.backtrace);
backtrace_destroy_context(&context);
}
