cxsminit.c

来自「上传一个带源代码的嵌入式实时多任务操作系统CMX」· C语言 代码 · 共 46 行

/*********************************************************

Copyright (c) CMX Company. 1999. All rights reserved

*********************************************************/
/* version 5.30 */

#define CMXMODULE 1

#include <cxfuncs.h>	/* get cmx include header file */
#include <cxextern.h>	/* get cmx include header file */

#if (defined(CMXTRACKER) || defined(WINTRACKER))
#include <cmxtrack.h>	/* get cmx include header file */
#endif

byte K_Semaphore_Create(byte sem_num, word16 n)	
{
	SEM *sem_ptr;

	if (sem_num >= MAX_SEMAPHORES)
		{
#if (defined(WINTRACKER))
		if (CMXTRACKER_ON)
			{
			cmxtracker_in4(CXSMINIT_K_ERROR,sem_num,n);
			}
#endif
		return(K_ERROR);	/* return error status to caller */
		}
	K_I_Disable_Sched();
	sem_ptr = &sem_array[sem_num];	/* CMX semaphore handler. */
	sem_ptr->fwlink = (tcbpointer)sem_ptr;
	sem_ptr->bwlink = (tcbpointer)sem_ptr;
	sem_ptr->sem_n = sem_ptr->sem_count = n;
#if (defined(WINTRACKER))
	if (CMXTRACKER_ON)
		{
		cmxtracker_in4(CXSMINIT_K_OK,sem_num,sem_ptr->sem_count);
		}
#endif
	K_I_Func_Return();	/* release task block */
	return(K_OK);	/* return good status to caller */
}