src/gallium/drivers/trace/tr_buffer.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "util/u_inlines.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_simple_list.h"
  32
  33 #include "tr_buffer.h"
  34
  35 struct pipe_buffer *
  36 trace_buffer_create(struct trace_screen *tr_scr,
  37                     struct pipe_buffer *buffer)
  38 {
  39    struct trace_buffer *tr_buf;
  40
  41    if(!buffer)
  42       goto error;
  43
  44    assert(buffer->screen == tr_scr->screen);
  45
  46    tr_buf = CALLOC_STRUCT(trace_buffer);
  47    if(!tr_buf)
  48       goto error;
  49
  50    memcpy(&tr_buf->base, buffer, sizeof(struct pipe_buffer));
  51
  52    pipe_reference_init(&tr_buf->base.reference, 1);
  53    tr_buf->base.screen = &tr_scr->base;
  54    tr_buf->buffer = buffer;
  55
  56    trace_screen_add_to_list(tr_scr, buffers, tr_buf);
  57
  58    return &tr_buf->base;
  59
  60 error:
  61    pipe_buffer_reference(&buffer, NULL);
  62    return NULL;
  63 }
  64
  65
  66 void
  67 trace_buffer_destroy(struct trace_screen *tr_scr,
  68                      struct pipe_buffer *buffer)
  69 {
  70    struct trace_buffer *tr_buf = trace_buffer(buffer);
  71
  72    trace_screen_remove_from_list(tr_scr, buffers, tr_buf);
  73
  74    pipe_buffer_reference(&tr_buf->buffer, NULL);
  75    FREE(tr_buf);
  76 }