src/gallium/auxiliary/pipebuffer/pb_validate.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 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 VMWARE 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  * @file
  30  * Buffer validation.
  31  *
  32  * @author Jose Fonseca <jfonseca@vmware.com>
  33  */
  34
  35
  36 #include "pipe/p_compiler.h"
  37 #include "pipe/p_defines.h"
  38 #include "util/u_memory.h"
  39 #include "util/u_debug.h"
  40 #include "util/u_hash_table.h"
  41
  42 #include "pb_buffer.h"
  43 #include "pb_validate.h"
  44
  45
  46 #define PB_VALIDATE_INITIAL_SIZE 1 /* 512 */
  47
  48
  49 struct pb_validate_entry
  50 {
  51    struct pb_buffer *buf;
  52    unsigned flags;
  53 };
  54
  55
  56 struct pb_validate
  57 {
  58    struct pb_validate_entry *entries;
  59    unsigned used;
  60    unsigned size;
  61 };
  62
  63
  64 enum pipe_error
  65 pb_validate_add_buffer(struct pb_validate *vl,
  66                        struct pb_buffer *buf,
  67                        enum pb_usage_flags flags,
  68                        struct hash_table *ht,
  69                        boolean *already_present)
  70 {
  71    assert(buf);
  72    *already_present = FALSE;
  73    if (!buf)
  74       return PIPE_ERROR;
  75
  76    assert(flags & PB_USAGE_GPU_READ_WRITE);
  77    assert(!(flags & ~PB_USAGE_GPU_READ_WRITE));
  78    flags &= PB_USAGE_GPU_READ_WRITE;
  79
  80    if (ht) {
  81       unsigned long entry_idx = (unsigned long) util_hash_table_get(ht, buf);
  82
  83       if (entry_idx) {
  84          struct pb_validate_entry *entry = &vl->entries[entry_idx - 1];
  85
  86          assert(entry->buf == buf);
  87          entry->flags |= flags;
  88          *already_present = TRUE;
  89
  90          return PIPE_OK;
  91       }
  92    }
  93
  94    /* Grow the table */
  95    if(vl->used == vl->size) {
  96       unsigned new_size;
  97       struct pb_validate_entry *new_entries;
  98
  99       new_size = vl->size * 2;
 100       if(!new_size)
 101          return PIPE_ERROR_OUT_OF_MEMORY;
 102
 103       new_entries = (struct pb_validate_entry *)REALLOC(vl->entries,
 104                                                         vl->size*sizeof(struct pb_validate_entry),
 105                                                         new_size*sizeof(struct pb_validate_entry));
 106       if (!new_entries)
 107          return PIPE_ERROR_OUT_OF_MEMORY;
 108
 109       memset(new_entries + vl->size, 0, (new_size - vl->size)*sizeof(struct pb_validate_entry));
 110
 111       vl->size = new_size;
 112       vl->entries = new_entries;
 113    }
 114
 115    assert(!vl->entries[vl->used].buf);
 116    pb_reference(&vl->entries[vl->used].buf, buf);
 117    vl->entries[vl->used].flags = flags;
 118    ++vl->used;
 119
 120    if (ht)
 121       util_hash_table_set(ht, buf, (void *) (unsigned long) vl->used);
 122
 123    return PIPE_OK;
 124 }
 125
 126
 127 enum pipe_error
 128 pb_validate_foreach(struct pb_validate *vl,
 129                     enum pipe_error (*callback)(struct pb_buffer *buf, void *data),
 130                     void *data)
 131 {
 132    unsigned i;
 133    for(i = 0; i < vl->used; ++i) {
 134       enum pipe_error ret;
 135       ret = callback(vl->entries[i].buf, data);
 136       if(ret != PIPE_OK)
 137          return ret;
 138    }
 139    return PIPE_OK;
 140 }
 141
 142
 143 enum pipe_error
 144 pb_validate_validate(struct pb_validate *vl)
 145 {
 146    unsigned i;
 147
 148    for(i = 0; i < vl->used; ++i) {
 149       enum pipe_error ret;
 150       ret = pb_validate(vl->entries[i].buf, vl, vl->entries[i].flags);
 151       if(ret != PIPE_OK) {
 152          while(i--)
 153             pb_validate(vl->entries[i].buf, NULL, 0);
 154          return ret;
 155       }
 156    }
 157
 158    return PIPE_OK;
 159 }
 160
 161
 162 void
 163 pb_validate_fence(struct pb_validate *vl,
 164                   struct pipe_fence_handle *fence)
 165 {
 166    unsigned i;
 167    for(i = 0; i < vl->used; ++i) {
 168       pb_fence(vl->entries[i].buf, fence);
 169       pb_reference(&vl->entries[i].buf, NULL);
 170    }
 171    vl->used = 0;
 172 }
 173
 174
 175 void
 176 pb_validate_destroy(struct pb_validate *vl)
 177 {
 178    unsigned i;
 179    for(i = 0; i < vl->used; ++i)
 180       pb_reference(&vl->entries[i].buf, NULL);
 181    FREE(vl->entries);
 182    FREE(vl);
 183 }
 184
 185
 186 struct pb_validate *
 187 pb_validate_create()
 188 {
 189    struct pb_validate *vl;
 190
 191    vl = CALLOC_STRUCT(pb_validate);
 192    if (!vl)
 193       return NULL;
 194
 195    vl->size = PB_VALIDATE_INITIAL_SIZE;
 196    vl->entries = (struct pb_validate_entry *)CALLOC(vl->size, sizeof(struct pb_validate_entry));
 197    if(!vl->entries) {
 198       FREE(vl);
 199       return NULL;
 200    }
 201
 202    return vl;
 203 }
 204