lldb/test/API/functionalities/scripted_process/baz.cpp

#include "baz.h"

#include <math.h>

int baz(int &j, std::mutex &mutex, std::condition_variable &cv) {
  std::unique_lock<std::mutex> lock(mutex);
  cv.wait(lock, [&j] { return j == 42 * 42; });
  int k = sqrt(j);
  return k; // break here
}
[lldb/test] Fix data racing issue in TestStackCoreScriptedProcess This patch should fix an nondeterministic error in TestStackCoreScriptedProcess. In order to test both the multithreading capability and shared library loading in Scripted Processes, the test would create multiple threads that would take the same variable as a reference. The first thread would alter the value and the second thread would monitor the value until it gets altered. This assumed a certain ordering regarding the `std::thread` spawning, however the ordering was not always guaranteed at runtime. To fix that, the test now makes use of a `std::condition_variable` shared between the each thread. On the former, it will notify the other thread when the variable gets initialized or updated and on the latter, it will wait until the variable it receives a new notification. This should fix the data racing issue while preserving the testing coverage. rdar://98678134 Differential Revision: https://reviews.llvm.org/D139484 Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com> 2023-01-10 16:28:25 -08:00			`#include "baz.h"`

			`#include <math.h>`

			`int baz(int &j, std::mutex &mutex, std::condition_variable &cv) {`
			`std::unique_lock<std::mutex> lock(mutex);`
			`cv.wait(lock, [&j] { return j == 42 * 42; });`
			`int k = sqrt(j);`
			`return k; // break here`
			`}`