workbench/libs/mesa/src/gallium/auxiliary/util/u_ringbuffer.h

   1
   2 #ifndef UTIL_RINGBUFFER_H
   3 #define UTIL_RINGBUFFER_H
   4
   5 #include "pipe/p_compiler.h"
   6 #include "pipe/p_defines.h"       /* only for pipe_error! */
   7
   8 /* Generic header
   9  */
  10 struct util_packet {
  11    unsigned dwords:8;
  12    unsigned data24:24;
  13 };
  14
  15 struct util_ringbuffer;
  16
  17 struct util_ringbuffer *util_ringbuffer_create( unsigned dwords );
  18
  19 void util_ringbuffer_destroy( struct util_ringbuffer *ring );
  20
  21 void util_ringbuffer_enqueue( struct util_ringbuffer *ring,
  22                               const struct util_packet *packet );
  23
  24 enum pipe_error util_ringbuffer_dequeue( struct util_ringbuffer *ring,
  25                                          struct util_packet *packet,
  26                                          unsigned max_dwords,
  27                                          boolean wait );
  28
  29 #endif