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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2012
*
* 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.
*/
#ifndef LIBSCP_LOCK_H
#define LIBSCP_LOCK_H
#include "libscp_types.h"
#define LIBSCP_LOCK_FORK_BLOCKER 1
#define LIBSCP_LOCK_FORK_WAITING 0
/**
*
* @brief initializes all the locks
*
*/
void DEFAULT_CC
scp_lock_init(void);
/**
*
* @brief requires to fork a new child process
*
*/
void DEFAULT_CC
scp_lock_fork_request(void);
/**
*
* @brief releases a fork() request
*
*/
void DEFAULT_CC
scp_lock_fork_release(void);
/**
*
* @brief starts a section that is critical for forking
*
* starts a section that is critical for forking, that is noone can fork()
* while i'm in a critical section. But if someone wanted to fork we have
* to wait until he finishes with lock_fork_release()
*
* @return
*
*/
int DEFAULT_CC
scp_lock_fork_critical_section_start(void);
/**
*
* @brief closes the critical section
*
*/
void DEFAULT_CC
scp_lock_fork_critical_section_end(int blocking);
#endif
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