cxdelink.c

上传一个带源代码的嵌入式实时多任务操作系统CMX

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

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

/******************************************************
 This function will remove a task from the linked list of TCB's.
******************************************************/
void K_I_Unlink(tcbpointer tcbptr)
{
	tcbpointer prevtcb;

	/* remove the task from linked list */
	prevtcb = cmx_tcb;

	/* scan TCB's looking for TCB that points to this TCB */
	while (prevtcb->nxttcb != tcbptr)
		{
		prevtcb = prevtcb->nxttcb;
		}
	prevtcb->nxttcb = tcbptr->nxttcb;
	/* the previous tcb nxttcb points to the delink tcb nxttcb */
	tcbptr->nxttcb = 0;
	/* identify that this task no longers exist */
}