sol-reentrant.h

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/*
 * This file is part of the Soletta (TM) Project
 *
 * Copyright (C) 2015 Intel Corporation. All rights reserved.
 *
 * 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

#ifdef __cplusplus
extern "C" {
#endif

typedef struct sol_reentrant {
    bool in_use;
    bool delete_me;
} sol_reentrant;

#define SOL_REENTRANT_CALL(handle) \
    for (bool reentrant_run = true; reentrant_run; reentrant_run = false) \
        for (bool reentrant_was_used = (handle).in_use; reentrant_run; \
            (handle).in_use = reentrant_was_used, reentrant_run = false) \
            for ((handle).in_use = true; reentrant_run; reentrant_run = false)

#define SOL_REENTRANT_FREE(reentrant) \
    if (({ (reentrant).delete_me = true; !(reentrant).in_use; }))

#ifdef __cplusplus
}
#endif