mbx.h

SEED的VPM642测试程序-板级支持库

/*
 *  Copyright 2003 by Texas Instruments Incorporated.
 *  All rights reserved. Property of Texas Instruments Incorporated.
 *  Restricted rights to use, duplicate or disclose this code are
 *  granted through contract.
 *  
 */
/* "@(#) DSP/BIOS 4.90.270 12-18-03 (barracuda-o04)" */
/*
 *  ======== mbx.h ========
 *
 */

#ifndef MBX_
#define MBX_

#include <que.h>
#include <sem.h>
#include <sys.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef struct MBX_Obj {
    QUE_Obj	dataQue;	/* message queue */
    QUE_Obj	freeQue;	/* free queue */
    SEM_Obj	dataSem;	/* count = number of messages */
    SEM_Obj	freeSem;	/* count = number of free slots */

    Int		segid;		/* elements are allocated here */
    Uns		size;		/* size of mailbox elements */
    Uns		length;		/* number of elements in mailbox */
} MBX_Obj, *MBX_Handle;

typedef struct MBX_Attrs {
    Int		segid;		/* segment for element allocation */
} MBX_Attrs;

extern MBX_Attrs MBX_ATTRS;	/* default attributes */

extern MBX_Handle MBX_create(Uns size, Uns length, MBX_Attrs *attrs);
extern Void MBX_delete(MBX_Handle mbx);
extern Bool MBX_pend(MBX_Handle mbx, Ptr msg, Uns timeout);
extern Bool MBX_post(MBX_Handle mbx, Ptr msg, Uns timeout);

#ifdef __cplusplus
}
#endif /* extern "C" */

#endif /* MBX_ */