Archipelago » qemu

   We don't require a full sync, only that no cpus are executing guest code.

   The alternative is to map target atomic ops onto host equivalents,

   which requires quite a lot of per host/target work.  */

static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;

static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;

static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;

        thread_env->next_cpu = NULL;

        pending_cpus = 0;

        pthread_mutex_init(&exclusive_lock, NULL);

        pthread_cond_init(&exclusive_cond, NULL);

        pthread_cond_init(&exclusive_resume, NULL);

        pthread_mutex_init(&tb_lock, NULL);

    exclusive_idle();

    pthread_mutex_unlock(&exclusive_lock);

}

#else /* if !USE_NPTL */

/* These are no-ops because we are not threadsafe.  */

static inline void cpu_exec_start(CPUState *env)

        gdbserver_fork(thread_env);

    }

}

#endif