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123 lines
2.1 KiB
123 lines
2.1 KiB
19 years ago
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/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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xrdp: A Remote Desktop Protocol server.
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Copyright (C) Jay Sorg 2005-2006
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*/
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#ifndef LOCK_H
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#define LOCK_H
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#include "sesman.h"
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#define SESMAN_LOCK_FORK_BLOCKER 1
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#define SESMAN_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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lock_init();
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/**
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*
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* @brief acquires the lock for the session chain
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*
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*/
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void DEFAULT_CC
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lock_chain_acquire();
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/**
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*
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* @brief releases the sessiona chain lock
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*
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*/
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void DEFAULT_CC
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lock_chain_release();
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/**
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*
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* @brief acquires config lock
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*
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*/
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void DEFAULT_CC
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lock_cfg_acquire();
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/**
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*
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* @brief releases config lock
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*
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*/
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void DEFAULT_CC
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lock_cfg_release();
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/**
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*
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* @brief request the socket lock
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*
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*/
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void DEFAULT_CC
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lock_socket_acquire();
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/**
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*
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* @brief releases the socket lock
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*
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*/
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void DEFAULT_CC
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lock_socket_release();
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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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lock_fork_request();
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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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lock_fork_release();
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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 noone 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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lock_fork_critical_section_start();
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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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lock_fork_critical_section_end(int blocking);
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#endif
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