diff options
Diffstat (limited to 'src/gallium/auxiliary/pipebuffer/pb_validate.c')
| -rw-r--r-- | src/gallium/auxiliary/pipebuffer/pb_validate.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/pipebuffer/pb_validate.c b/src/gallium/auxiliary/pipebuffer/pb_validate.c new file mode 100644 index 0000000000..150fd50618 --- /dev/null +++ b/src/gallium/auxiliary/pipebuffer/pb_validate.c @@ -0,0 +1,193 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/** + * @file + * Buffer validation. + * + * @author Jose Fonseca <jrfonseca@tungstengraphics.com> + */ + + +#include "pipe/p_compiler.h" +#include "pipe/p_error.h" +#include "util/u_memory.h" +#include "util/u_debug.h" + +#include "pb_buffer.h" +#include "pb_buffer_fenced.h" +#include "pb_validate.h" + + +#define PB_VALIDATE_INITIAL_SIZE 1 /* 512 */ + + +struct pb_validate_entry +{ + struct pb_buffer *buf; + unsigned flags; +}; + + +struct pb_validate +{ + struct pb_validate_entry *entries; + unsigned used; + unsigned size; +}; + + +enum pipe_error +pb_validate_add_buffer(struct pb_validate *vl, + struct pb_buffer *buf, + unsigned flags) +{ + assert(buf); + if(!buf) + return PIPE_ERROR; + + assert(flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE); + assert(!(flags & ~PIPE_BUFFER_USAGE_GPU_READ_WRITE)); + flags &= PIPE_BUFFER_USAGE_GPU_READ_WRITE; + + /* We only need to store one reference for each buffer, so avoid storing + * consecutive references for the same buffer. It might not be the most + * common pattern, but it is easy to implement. + */ + if(vl->used && vl->entries[vl->used - 1].buf == buf) { + vl->entries[vl->used - 1].flags |= flags; + return PIPE_OK; + } + + /* Grow the table */ + if(vl->used == vl->size) { + unsigned new_size; + struct pb_validate_entry *new_entries; + + new_size = vl->size * 2; + if(!new_size) + return PIPE_ERROR_OUT_OF_MEMORY; + + new_entries = (struct pb_validate_entry *)REALLOC(vl->entries, + vl->size*sizeof(struct pb_validate_entry), + new_size*sizeof(struct pb_validate_entry)); + if(!new_entries) + return PIPE_ERROR_OUT_OF_MEMORY; + + memset(new_entries + vl->size, 0, (new_size - vl->size)*sizeof(struct pb_validate_entry)); + + vl->size = new_size; + vl->entries = new_entries; + } + + assert(!vl->entries[vl->used].buf); + pb_reference(&vl->entries[vl->used].buf, buf); + vl->entries[vl->used].flags = flags; + ++vl->used; + + return PIPE_OK; +} + + +enum pipe_error +pb_validate_foreach(struct pb_validate *vl, + enum pipe_error (*callback)(struct pb_buffer *buf, void *data), + void *data) +{ + unsigned i; + for(i = 0; i < vl->used; ++i) { + enum pipe_error ret; + ret = callback(vl->entries[i].buf, data); + if(ret != PIPE_OK) + return ret; + } + return PIPE_OK; +} + + +enum pipe_error +pb_validate_validate(struct pb_validate *vl) +{ + unsigned i; + + for(i = 0; i < vl->used; ++i) { + enum pipe_error ret; + ret = pb_validate(vl->entries[i].buf, vl, vl->entries[i].flags); + if(ret != PIPE_OK) { + while(i--) + pb_validate(vl->entries[i].buf, NULL, 0); + return ret; + } + } + + return PIPE_OK; +} + + +void +pb_validate_fence(struct pb_validate *vl, + struct pipe_fence_handle *fence) +{ + unsigned i; + for(i = 0; i < vl->used; ++i) { + pb_fence(vl->entries[i].buf, fence); + pb_reference(&vl->entries[i].buf, NULL); + } + vl->used = 0; +} + + +void +pb_validate_destroy(struct pb_validate *vl) +{ + unsigned i; + for(i = 0; i < vl->used; ++i) + pb_reference(&vl->entries[i].buf, NULL); + FREE(vl->entries); + FREE(vl); +} + + +struct pb_validate * +pb_validate_create() +{ + struct pb_validate *vl; + + vl = CALLOC_STRUCT(pb_validate); + if(!vl) + return NULL; + + vl->size = PB_VALIDATE_INITIAL_SIZE; + vl->entries = (struct pb_validate_entry *)CALLOC(vl->size, sizeof(struct pb_validate_entry)); + if(!vl->entries) { + FREE(vl); + return NULL; + } + + return vl; +} + |