Function processTest

POSIX/demo/demo.cpp:283–306

}

void processTest() {
    constexpr auto processCount = 2;
    pid_t processHandles[processCount] = {0};
    for (int &processHandle : processHandles) {
        auto pid = fork();
        // this is child
        if (pid <= 0) {
            execl("process", "process", nullptr);
            perror("execl"); // execl doesn't return unless there is a problem
            exit(1);
        } else {
            processHandle = pid;
        }
    }

    for (int &processHandle : processHandles) {
        printf("Waiting for child %d ...\n", processHandle);
        auto pid = waitpid(processHandle, nullptr, 0);
        printf("Child quit pid: %d\n", pid);
    }

    auto mmkv = MMKV::mmkvWithID("process_test", MMKV_MULTI_PROCESS);
    cout << "total count of process_test: " << mmkv->count() << endl;
}

void testInterProcessLock() {
    //auto mmkv = MMKV::mmkvWithID("TestInterProcessLock", MMKV_MULTI_PROCESS);