diff options
author | José Fonseca <jrfonseca@tungstengraphics.com> | 2008-02-15 17:35:24 +0900 |
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committer | José Fonseca <jrfonseca@tungstengraphics.com> | 2008-02-15 17:45:40 +0900 |
commit | b642730be93149baa7556e5791393168ab396175 (patch) | |
tree | 67d174be5d4814261b93bc8b20c027a26d1c3d06 /src/gallium/aux/pipebuffer/pb_buffer_fenced.c | |
parent | 4593be34b2a6e494f0e476c8aa8e1d2633fffd47 (diff) |
Code reorganization: move files into their places.
This is in a separate commit to ensure renames are properly preserved.
Diffstat (limited to 'src/gallium/aux/pipebuffer/pb_buffer_fenced.c')
-rw-r--r-- | src/gallium/aux/pipebuffer/pb_buffer_fenced.c | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/src/gallium/aux/pipebuffer/pb_buffer_fenced.c b/src/gallium/aux/pipebuffer/pb_buffer_fenced.c new file mode 100644 index 0000000000..f4fc3f6d71 --- /dev/null +++ b/src/gallium/aux/pipebuffer/pb_buffer_fenced.c @@ -0,0 +1,299 @@ +/************************************************************************** + * + * Copyright 2007 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 + * Implementation of fenced buffers. + * + * \author José Fonseca <jrfonseca-at-tungstengraphics-dot-com> + * \author Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + + +#include "linked_list.h" + +#include "p_compiler.h" +#include "p_debug.h" +#include "p_winsys.h" +#include "p_thread.h" +#include "p_util.h" + +#include "pb_buffer.h" +#include "pb_buffer_fenced.h" + +#ifndef __MSC__ +#include <unistd.h> +#endif + + +/** + * Convenience macro (type safe). + */ +#define SUPER(__derived) (&(__derived)->base) + + +struct fenced_buffer_list +{ + _glthread_Mutex mutex; + + struct pipe_winsys *winsys; + + size_t numDelayed; + size_t checkDelayed; + + struct list_head delayed; +}; + + +/** + * Wrapper around a pipe buffer which adds fencing and reference counting. + */ +struct fenced_buffer +{ + struct pb_buffer base; + + struct pb_buffer *buffer; + + struct pipe_fence_handle *fence; + + struct list_head head; + struct fenced_buffer_list *list; +}; + + +static INLINE struct fenced_buffer * +fenced_buffer(struct pb_buffer *buf) +{ + assert(buf); + assert(buf->vtbl == &fenced_buffer_vtbl); + return (struct fenced_buffer *)buf; +} + + + + +static void +_fenced_buffer_list_check_free(struct fenced_buffer_list *fenced_list, + int wait) +{ + struct pipe_winsys *winsys = fenced_list->winsys; + struct fenced_buffer *fenced_buf; + struct list_head *list, *prev; + int signaled = -1; + + list = fenced_list->delayed.next; + + if (fenced_list->numDelayed > 3) { + unsigned i; + + for (i = 0; i < fenced_list->numDelayed; i += 3) { + list = list->next; + } + } + + prev = list->prev; + for (; list != &fenced_list->delayed; list = prev, prev = list->prev) { + + fenced_buf = LIST_ENTRY(struct fenced_buffer, list, head); + + if (signaled != 0) { + if (wait) { + signaled = winsys->fence_finish(winsys, fenced_buf->fence, 0); + } + else { + signaled = winsys->fence_signalled(winsys, fenced_buf->fence, 0); + } + } + + if (signaled != 0) + /* XXX: we are assuming that buffers are freed in the same order they + * are fenced which may not always be true... + */ + break; + + winsys->fence_reference(winsys, &fenced_buf->fence, NULL); + + LIST_DEL(list); + fenced_list->numDelayed--; + + /* Do the delayed destroy: + */ + pb_reference(&fenced_buf->buffer, NULL); + FREE(fenced_buf); + } +} + + +static void +fenced_buffer_destroy(struct pb_buffer *buf) +{ + struct fenced_buffer *fenced_buf = fenced_buffer(buf); + struct fenced_buffer_list *fenced_list = fenced_buf->list; + + if (fenced_buf->fence) { + LIST_ADDTAIL(&fenced_buf->head, &fenced_list->delayed); + fenced_list->numDelayed++; + } + else { + pb_reference(&fenced_buf->buffer, NULL); + FREE(fenced_buf); + } + + if ((fenced_list->numDelayed % fenced_list->checkDelayed) == 0) + _fenced_buffer_list_check_free(fenced_list, 0); +} + + +static void * +fenced_buffer_map(struct pb_buffer *buf, + unsigned flags) +{ + struct fenced_buffer *fenced_buf = fenced_buffer(buf); + return pb_map(fenced_buf->buffer, flags); +} + + +static void +fenced_buffer_unmap(struct pb_buffer *buf) +{ + struct fenced_buffer *fenced_buf = fenced_buffer(buf); + pb_unmap(fenced_buf->buffer); +} + + +static void +fenced_buffer_get_base_buffer(struct pb_buffer *buf, + struct pb_buffer **base_buf, + unsigned *offset) +{ + struct fenced_buffer *fenced_buf = fenced_buffer(buf); + pb_get_base_buffer(fenced_buf->buffer, base_buf, offset); +} + + +const struct pb_vtbl +fenced_buffer_vtbl = { + fenced_buffer_destroy, + fenced_buffer_map, + fenced_buffer_unmap, + fenced_buffer_get_base_buffer +}; + + +struct pb_buffer * +fenced_buffer_create(struct fenced_buffer_list *fenced_list, + struct pb_buffer *buffer) +{ + struct fenced_buffer *buf; + + if(!buffer) + return NULL; + + buf = CALLOC_STRUCT(fenced_buffer); + if(!buf) + return NULL; + + buf->base.base.refcount = 1; + buf->base.base.alignment = buffer->base.alignment; + buf->base.base.usage = buffer->base.usage; + buf->base.base.size = buffer->base.size; + + buf->base.vtbl = &fenced_buffer_vtbl; + buf->buffer = buffer; + buf->list = fenced_list; + + return &buf->base; +} + + +void +buffer_fence(struct pb_buffer *buf, + struct pipe_fence_handle *fence) +{ + struct fenced_buffer *fenced_buf = fenced_buffer(buf); + struct fenced_buffer_list *fenced_list = fenced_buf->list; + struct pipe_winsys *winsys = fenced_list->winsys; + + _glthread_LOCK_MUTEX(fenced_list->mutex); + winsys->fence_reference(winsys, &fenced_buf->fence, fence); + _glthread_UNLOCK_MUTEX(fenced_list->mutex); +} + + +struct fenced_buffer_list * +fenced_buffer_list_create(struct pipe_winsys *winsys) +{ + struct fenced_buffer_list *fenced_list; + + fenced_list = (struct fenced_buffer_list *)CALLOC(1, sizeof(*fenced_list)); + if (!fenced_list) + return NULL; + + fenced_list->winsys = winsys; + + LIST_INITHEAD(&fenced_list->delayed); + + fenced_list->numDelayed = 0; + + /* TODO: don't hard code this */ + fenced_list->checkDelayed = 5; + + _glthread_INIT_MUTEX(fenced_list->mutex); + + return fenced_list; +} + + +void +fenced_buffer_list_check_free(struct fenced_buffer_list *fenced_list, + int wait) +{ + _glthread_LOCK_MUTEX(fenced_list->mutex); + _fenced_buffer_list_check_free(fenced_list, wait); + _glthread_UNLOCK_MUTEX(fenced_list->mutex); +} + + +void +fenced_buffer_list_destroy(struct fenced_buffer_list *fenced_list) +{ + _glthread_LOCK_MUTEX(fenced_list->mutex); + + /* Wait on outstanding fences */ + while (fenced_list->numDelayed) { + _glthread_UNLOCK_MUTEX(fenced_list->mutex); + sched_yield(); + _fenced_buffer_list_check_free(fenced_list, 1); + _glthread_LOCK_MUTEX(fenced_list->mutex); + } + + _glthread_UNLOCK_MUTEX(fenced_list->mutex); + + FREE(fenced_list); +} + + |