7108   struct MovableState {  struct in perfetto::base::Subprocess
7109     base::Pipe stdin_pipe;
7110     base::Pipe stdouterr_pipe;
7111     PlatformProcessId pid;
7112     Status status = kNotStarted;
7113     int returncode = -1;
7114     std::string output;  // Stdin+stderr. Only when kBuffer.
7115     std::unique_ptr<ResourceUsage> rusage{new ResourceUsage()};
7116     bool timed_out = false;
7118     std::thread stdouterr_thread;
7119     std::thread stdin_thread;
7120     ScopedPlatformHandle win_proc_handle;
7121     ScopedPlatformHandle win_thread_handle;
7123     base::EventFd stdouterr_done_event;
7124     std::mutex mutex;  // Protects locked_outerr_buf and the two pipes.
7125     std::string locked_outerr_buf;
7127     base::Pipe exit_status_pipe;
7128     size_t input_written = 0;
7129     std::thread waitpid_thread;