74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2012
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LIBSCP_LOCK_H
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#define LIBSCP_LOCK_H
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#include "libscp_types.h"
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#define LIBSCP_LOCK_FORK_BLOCKER 1
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#define LIBSCP_LOCK_FORK_WAITING 0
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/**
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*
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* @brief initializes all the locks
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*
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*/
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void DEFAULT_CC
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scp_lock_init(void);
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/**
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*
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* @brief requires to fork a new child process
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*
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*/
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void DEFAULT_CC
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scp_lock_fork_request(void);
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/**
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*
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* @brief releases a fork() request
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*
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*/
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void DEFAULT_CC
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scp_lock_fork_release(void);
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/**
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*
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* @brief starts a section that is critical for forking
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*
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* starts a section that is critical for forking, that is no one can fork()
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* while I'm in a critical section. But if someone wanted to fork we have
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* to wait until he finishes with lock_fork_release()
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*
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* @return
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*
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*/
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int DEFAULT_CC
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scp_lock_fork_critical_section_start(void);
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/**
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*
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* @brief closes the critical section
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*
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*/
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void DEFAULT_CC
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scp_lock_fork_critical_section_end(int blocking);
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#endif
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