| 1 | // This test will present lldb with two threads one of which the test will |
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| 2 | // overlay with an OSPlugin thread. Then we'll do a step out on the thread_1, |
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| 3 | // but arrange to hit a breakpoint in main before the step out completes. At |
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| 4 | // that point we will not report an OS plugin thread for thread_1. Then we'll |
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| 5 | // run again and hit the step out breakpoint. Make sure we haven't deleted |
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| 6 | // that, and recognize it. |
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| 7 | |
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| 8 | #include <condition_variable> |
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| 9 | #include <mutex> |
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| 10 | #include <stdio.h> |
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| 11 | #include <thread> |
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| 12 | |
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| 13 | static int g_value = 0; // I don't have access to the real threads in the |
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| 14 | // OS Plugin, and I don't want to have to count |
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| 15 | // StopID's. So I'm using this value to tell me which |
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| 16 | // stop point the program has reached. |
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| 17 | std::mutex g_mutex; |
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| 18 | std::condition_variable g_cv; |
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| 19 | static int g_condition = 0; // Using this as the variable backing g_cv |
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| 20 | // to prevent spurious wakeups. |
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| 21 | |
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| 22 | void step_out_of_here() { |
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| 23 | std::unique_lock<std::mutex> func_lock(g_mutex); |
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| 24 | // Set a breakpoint:first stop in thread - do a step out. |
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| 25 | g_condition = 1; |
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| 26 | g_cv.notify_one(); |
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| 27 | g_cv.wait(lock&: func_lock, p: [&] { return g_condition == 2; }); |
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| 28 | } |
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| 29 | |
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| 30 | void *thread_func() { |
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| 31 | // Do something |
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| 32 | step_out_of_here(); |
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| 33 | |
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| 34 | // Return |
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| 35 | return NULL; |
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| 36 | } |
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| 37 | |
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| 38 | int main() { |
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| 39 | // Lock the mutex so we can block the thread: |
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| 40 | std::unique_lock<std::mutex> main_lock(g_mutex); |
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| 41 | // Create the thread |
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| 42 | std::thread thread_1(thread_func); |
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| 43 | g_cv.wait(lock&: main_lock, p: [&] { return g_condition == 1; }); |
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| 44 | g_value = 1; |
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| 45 | g_condition = 2; |
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| 46 | // Stop here and do not make a memory thread for thread_1. |
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| 47 | g_cv.notify_one(); |
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| 48 | g_value = 2; |
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| 49 | main_lock.unlock(); |
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| 50 | |
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| 51 | // Wait for the threads to finish |
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| 52 | thread_1.join(); |
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| 53 | |
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| 54 | return 0; |
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| 55 | } |
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| 56 | |
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