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/******************************************************************************
*
* Copyright (C) 2014 Google, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#pragma once
#include "base.h"
#include <errno.h>
#include <semaphore.h>
#include <unistd.h>
#define WAIT(callback) \
do { \
sem_t *semaphore = callbacks_get_semaphore(#callback); \
TEMP_FAILURE_RETRY(sem_wait(semaphore)); \
} while (0)
#define CALL_AND_WAIT(expression, callback) \
do { \
sem_t *semaphore = callbacks_get_semaphore(#callback); \
while (!sem_trywait(semaphore)); \
expression; \
TEMP_FAILURE_RETRY(sem_wait(semaphore)); \
} while(0)
// To be called from every exit point of the callback. This macro
// takes 0 or 1 arguments, the return value of the callback.
#define CALLBACK_RET(...) do { \
sem_t *semaphore = callbacks_get_semaphore(__func__); \
sem_post(semaphore); \
return __VA_ARGS__; \
} while (0)
void callbacks_init();
void callbacks_cleanup();
bt_callbacks_t *callbacks_get_adapter_struct();
btpan_callbacks_t *callbacks_get_pan_struct();
btgatt_callbacks_t *callbacks_get_gatt_struct();
sem_t *callbacks_get_semaphore(const char *name);
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