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dqueue.h

/* $Id: dqueue.h,v 1.1.2.2 2001/02/08 12:25:43 armin Exp $ */

#ifndef _DIVA_USER_MODE_IDI_DATA_QUEUE_H__
#define _DIVA_USER_MODE_IDI_DATA_QUEUE_H__

#define DIVA_UM_IDI_MAX_MSGS 64

typedef struct _diva_um_idi_data_queue {
      int segments;
      int max_length;
      int read;
      int write;
      int count;
      int segment_pending;
      void *data[DIVA_UM_IDI_MAX_MSGS];
      int length[DIVA_UM_IDI_MAX_MSGS];
} diva_um_idi_data_queue_t;

int diva_data_q_init(diva_um_idi_data_queue_t * q,
                 int max_length, int max_segments);
int diva_data_q_finit(diva_um_idi_data_queue_t * q);
int diva_data_q_get_max_length(const diva_um_idi_data_queue_t * q);
void *diva_data_q_get_segment4write(diva_um_idi_data_queue_t * q);
void diva_data_q_ack_segment4write(diva_um_idi_data_queue_t * q,
                           int length);
const void *diva_data_q_get_segment4read(const diva_um_idi_data_queue_t *
                               q);
int diva_data_q_get_segment_length(const diva_um_idi_data_queue_t * q);
void diva_data_q_ack_segment4read(diva_um_idi_data_queue_t * q);

#endif

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