C++ slock_lock函数代码示例

static void data_runloop_thread_deinit(data_runloop_t *runloop)
{
   if (!runloop->thread_inited)
   {
      slock_lock(runloop->cond_lock);
      runloop->alive = false;
      scond_signal(runloop->cond);
      slock_unlock(runloop->cond_lock);
      sthread_join(runloop->thread);

      slock_free(runloop->lock);
      slock_free(runloop->cond_lock);
      slock_free(runloop->overlay_lock);
      scond_free(runloop->cond);
   }
}

void Task::Impl::execute(const TWork &work, void *param)
{
	slock_lock(this->mutex);

	if (work == NULL || !this->_isThreadRunning)
   {
		slock_unlock(this->mutex);
		return;
	}

	this->workFunc = work;
	this->workFuncParam = param;
	scond_signal(this->condWork);

	slock_unlock(this->mutex);
}

static void android_app_set_activity_state (void *data, int8_t cmd)
{
   struct android_app *android_app = (struct android_app*)data;

   if (!android_app)
      return;

   slock_lock(android_app->mutex);
   android_app_write_cmd(android_app, cmd);
   while (android_app->activityState != cmd && android_app->activityState != APP_CMD_DEAD)
      scond_wait(android_app->cond, android_app->mutex);
   slock_unlock(android_app->mutex);

   if (android_app->activityState == APP_CMD_DEAD)
      RARCH_LOG("RetroArch native thread is dead.\n");
}

const char *rarch_main_msg_queue_pull(void)
{
   const char *ret = NULL;

#ifdef HAVE_THREADS
   slock_lock(mq_lock);
#endif

   ret = msg_queue_pull(g_msg_queue);

#ifdef HAVE_THREADS
   slock_unlock(mq_lock);
#endif

   return ret;
}

static void data_runloop_thread_deinit(void)
{
   if (!g_data_runloop.thread_inited)
   {
      slock_lock(g_data_runloop.cond_lock);
      g_data_runloop.alive = false;
      scond_signal(g_data_runloop.cond);
      slock_unlock(g_data_runloop.cond_lock);
      sthread_join(g_data_runloop.thread);

      slock_free(g_data_runloop.lock);
      slock_free(g_data_runloop.cond_lock);
      rarch_main_data_overlay_thread_uninit();
      scond_free(g_data_runloop.cond);
   }
}

static bool thread_alive(void *data)
{
   thread_video_t *thr = (thread_video_t*)data;
   if (g_extern.is_paused)
   {
      thread_send_cmd(thr, CMD_ALIVE);
      thread_wait_reply(thr, CMD_ALIVE);
      return thr->cmd_data.b;
   }
   else
   {
      slock_lock(thr->lock);
      bool ret = thr->alive;
      slock_unlock(thr->lock);
      return ret;
   }
}

static void retro_task_threaded_cancel(void *task)
{
   retro_task_t *t;

   slock_lock(running_lock);

   for (t = tasks_running.front; t; t = t->next)
   {
      if (t == task)
      {
        t->cancelled = true;
        break;
      }
   }

   slock_unlock(running_lock);
}

static void adapter_thread(void *data)
{
   uint8_t __attribute__((aligned(32))) send_command_buf[4096];
   struct wiiusb_adapter *adapter = (struct wiiusb_adapter*)data;
   wiiusb_hid_t *hid = adapter ? adapter->hid : NULL;

   if (!adapter)
      return;

   while (!adapter->quitting)
   {
      size_t send_command_size;
      int tmp;
      int report_number;
      int size = 0;

      (void)tmp;
      (void)report_number;

      slock_lock(adapter->send_control_lock);

      if (fifo_read_avail(adapter->send_control_buffer) >= sizeof(send_command_size))
      {
         fifo_read(adapter->send_control_buffer, &send_command_size, sizeof(send_command_size));
         if (fifo_read_avail(adapter->send_control_buffer) >= sizeof(send_command_size))
         {
            fifo_read(adapter->send_control_buffer, send_command_buf, send_command_size);
            USB_WriteIntrMsg(adapter->handle, adapter->endpoint_out, send_command_size, send_command_buf);
         }
      }
      slock_unlock(adapter->send_control_lock);

      size = USB_ReadIntrMsg(adapter->handle, adapter->endpoint_in, adapter->endpoint_in_max_size, &adapter->data[0]);
      /* RARCH_LOG("%p USB_ReadIntrMsg(%i, %i, %i, %p): %i\n", &adapter->data[0],
         adapter->handle, adapter->endpoint_in, adapter->endpoint_in_max_size, &adapter->data[0],
         size); */

      //RARCH_LOG("%03i %03i %03i %03i\n", adapter->data[0], adapter->data[1], adapter->data[2], adapter->data[3], adapter->data[4]);
      //memmove(&adapter->data[1], &adapter->data[0], 2048);

      if (adapter && hid && hid->slots && size)
         pad_connection_packet(&hid->slots[adapter->slot], adapter->slot,
               adapter->data - 1, size+1);
   }
}

static ssize_t rs_write(void *data, const void *buf, size_t size)
{
   rsd_t *rsd = (rsd_t*)data;

   if (rsd->has_error)
      return -1;

   if (rsd->nonblock)
   {
      rsd_callback_lock(rsd->rd);
      size_t avail = fifo_write_avail(rsd->buffer);
      size_t write_amt = avail > size ? size : avail;
      fifo_write(rsd->buffer, buf, write_amt);
      rsd_callback_unlock(rsd->rd);
      return write_amt;
   }
   else
   {
      size_t written = 0;
      while (written < size && !rsd->has_error)
      {
         rsd_callback_lock(rsd->rd);
         size_t avail = fifo_write_avail(rsd->buffer);

         if (avail == 0)
         {
            rsd_callback_unlock(rsd->rd);
            if (!rsd->has_error)
            {
               slock_lock(rsd->cond_lock);
               scond_wait(rsd->cond, rsd->cond_lock);
               slock_unlock(rsd->cond_lock);
            }
         }
         else
         {
            size_t write_amt = size - written > avail ? avail : size - written;
            fifo_write(rsd->buffer, (const char*)buf + written, write_amt);
            rsd_callback_unlock(rsd->rd);
            written += write_amt;
         }
      }
      return written;
   }
}

void rarch_main_msg_queue_free(void)
{
   if (!g_msg_queue)
      return;

#ifdef HAVE_THREADS
   slock_lock(mq_lock);
#endif

   msg_queue_free(g_msg_queue);

#ifdef HAVE_THREADS
   slock_unlock(mq_lock);
   slock_free(mq_lock);
#endif

   g_msg_queue = NULL;
}

static bool thread_alive(void *data)
{
   bool ret;
   thread_video_t *thr = (thread_video_t*)data;

   if (rarch_main_is_paused())
   {
      thread_packet_t pkt = { CMD_ALIVE };
      thread_send_and_wait(thr, &pkt);
      return pkt.data.b;
   }

   slock_lock(thr->lock);
   ret = thr->alive;
   slock_unlock(thr->lock);

   return ret;
}

/**
 * autosave_free:
 * @handle          : pointer to autosave object
 *
 * Frees autosave object.
 **/
void autosave_free(autosave_t *handle)
{
   if (!handle)
      return;

   slock_lock(handle->cond_lock);
   handle->quit = true;
   slock_unlock(handle->cond_lock);
   scond_signal(handle->cond);
   sthread_join(handle->thread);

   slock_free(handle->lock);
   slock_free(handle->cond_lock);
   scond_free(handle->cond);

   free(handle->buffer);
   free(handle);
}

static void retro_task_threaded_deinit(void)
{
   slock_lock(running_lock);
   worker_continue = false;
   scond_signal(worker_cond);
   slock_unlock(running_lock);

   sthread_join(worker_thread);

   scond_free(worker_cond);
   slock_free(running_lock);
   slock_free(finished_lock);

   worker_thread = NULL;
   worker_cond   = NULL;
   running_lock  = NULL;
   finished_lock = NULL;
}

bool CDIF_MT::ReadRawSector(uint8 *buf, uint32 lba)
{
   bool found = FALSE;
   bool error_condition = false;

   if(UnrecoverableError)
   {
      memset(buf, 0, 2352 + 96);
      return(false);
   }

   // This shouldn't happen, the emulated-system-specific CDROM emulation code should make sure the emulated program doesn't try
   // to read past the last "real" sector of the disc.
   if(lba >= disc_toc.tracks[100].lba)
   {
      printf("Attempt to read LBA %d, >= LBA %d\n", lba, disc_toc.tracks[100].lba);
      return(FALSE);
   }

   ReadThreadQueue.Write(CDIF_Message(CDIF_MSG_READ_SECTOR, lba));

   slock_lock((slock_t*)SBMutex);

   do
   {
      int i;
      for(i = 0; i < SBSize; i++)
      {
         if(SectorBuffers[i].valid && SectorBuffers[i].lba == lba)
         {
            error_condition = SectorBuffers[i].error;
            memcpy(buf, SectorBuffers[i].data, 2352 + 96);
            found = TRUE;
         }
      }

      if(!found)
         scond_wait((scond_t*)SBCond, (slock_t*)SBMutex);
   } while(!found);

   slock_unlock((slock_t*)SBMutex);

   return(!error_condition);
}

static void autosave_thread(void *data)
{
   autosave_t *save = (autosave_t*)data;

   bool first_log = true;

   while (!save->quit)
   {
      autosave_lock(save);
      bool differ = memcmp(save->buffer, save->retro_buffer, save->bufsize) != 0;
      if (differ)
         memcpy(save->buffer, save->retro_buffer, save->bufsize);
      autosave_unlock(save);

      if (differ)
      {
         // Should probably deal with this more elegantly.
         FILE *file = fopen(save->path, "wb");
         if (file)
         {
            // Avoid spamming down stderr ... :)
            if (first_log)
            {
               RARCH_LOG("Autosaving SRAM to \"%s\", will continue to check every %u seconds ...\n", save->path, save->interval);
               first_log = false;
            }
            else
               RARCH_LOG("SRAM changed ... autosaving ...\n");

            bool failed = false;
            failed |= fwrite(save->buffer, 1, save->bufsize, file) != save->bufsize;
            failed |= fflush(file) != 0;
            failed |= fclose(file) != 0;
            if (failed)
               RARCH_WARN("Failed to autosave SRAM. Disk might be full.\n");
         }
      }

      slock_lock(save->cond_lock);
      if (!save->quit)
         scond_wait_timeout(save->cond, save->cond_lock, save->interval * 1000);
      slock_unlock(save->cond_lock);
   }
}