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Merge "Display errors instead of running infinitely."

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Christopher Ferris 2015-02-07 02:18:39 +00:00 committed by Gerrit Code Review
commit d687905f11
1 changed files with 27 additions and 17 deletions
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44
tests/stack_unwinding_test.cpp
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@ -73,37 +73,47 @@ TEST(stack_unwinding, easy) {
ASSERT_EQ(count + 1, deeper_count);
}
static volatile bool signal_handler_run = false;
static int killer_count = 0;
static int handler_count = 0;
static int handler_one_deeper_count = 0;
struct UnwindData {
volatile bool signal_handler_complete = false;
int expected_frame_count = 0;
int handler_frame_count = 0;
int handler_one_deeper_frame_count = 0;
};
static UnwindData g_unwind_data;
static void noinline UnwindSignalHandler(int) {
_Unwind_Backtrace(FrameCounter, &handler_count);
ASSERT_GT(handler_count, killer_count);
_Unwind_Backtrace(FrameCounter, &g_unwind_data.handler_frame_count);
handler_one_deeper_count = unwind_one_frame_deeper();
ASSERT_EQ(handler_count + 1, handler_one_deeper_count);
signal_handler_run = true;
g_unwind_data.handler_one_deeper_frame_count = unwind_one_frame_deeper();
g_unwind_data.signal_handler_complete = true;
}
static void verify_unwind_data(const UnwindData& unwind_data) {
EXPECT_GT(unwind_data.handler_frame_count, unwind_data.expected_frame_count);
EXPECT_EQ(unwind_data.handler_frame_count + 1, unwind_data.handler_one_deeper_frame_count);
}
TEST(stack_unwinding, unwind_through_signal_frame) {
killer_count = handler_count = handler_one_deeper_count = 0;
g_unwind_data = {};
ScopedSignalHandler ssh(SIGUSR1, UnwindSignalHandler);
_Unwind_Backtrace(FrameCounter, &killer_count);
signal_handler_run = false;
_Unwind_Backtrace(FrameCounter, &g_unwind_data.expected_frame_count);
ASSERT_EQ(0, kill(getpid(), SIGUSR1));
while (!signal_handler_run) {}
while (!g_unwind_data.signal_handler_complete) {}
verify_unwind_data(g_unwind_data);
}
// On LP32, the SA_SIGINFO flag gets you __restore_rt instead of __restore.
TEST(stack_unwinding, unwind_through_signal_frame_SA_SIGINFO) {
killer_count = handler_count = handler_one_deeper_count = 0;
g_unwind_data = {};
ScopedSignalHandler ssh(SIGUSR1, UnwindSignalHandler, SA_SIGINFO);
_Unwind_Backtrace(FrameCounter, &killer_count);
signal_handler_run = false;
_Unwind_Backtrace(FrameCounter, &g_unwind_data.expected_frame_count);
ASSERT_EQ(0, kill(getpid(), SIGUSR1));
while (!signal_handler_run) {}
while (!g_unwind_data.signal_handler_complete) {}
verify_unwind_data(g_unwind_data);
}