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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* By Michael Martin, 2002-09-21
*/
/* The task libraries are a set of facilities for controlling synchronous
* processes. They are built on top of threads, but add the ability to
* modify a "state" variable to pass messages back and forth. */
#ifndef LIBS_TASKLIB_H_
#define LIBS_TASKLIB_H_
#include "libs/threadlib.h"
#if defined(__cplusplus)
extern "C" {
#endif
/* Bitmasks for setting task state. */
#define TASK_INUSE 1
#define TASK_EXIT 2
struct taskstruct {
Mutex state_mutex;
volatile DWORD state; // Protected by state_mutex
const char *name;
volatile Thread thread;
};
typedef struct taskstruct *Task;
extern void InitTaskSystem (void);
extern void CleanupTaskSystem (void);
extern Task AssignTask (ThreadFunction task_func, SDWORD Stacksize, const char *name);
extern DWORD Task_SetState (Task task, DWORD state_mask);
extern DWORD Task_ClearState (Task task, DWORD state_mask);
extern DWORD Task_ToggleState (Task task, DWORD state_mask);
extern DWORD Task_ReadState (Task task, DWORD state_mask);
extern void FinishTask (Task task);
extern void ConcludeTask (Task task);
#if defined(__cplusplus)
}
#endif
#endif
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