From: José Fonseca Date: Sun, 13 Apr 2008 06:10:01 +0000 (+0900) Subject: gallium: Buffer cache. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fb2b5f7a4ac411a5bb5cde12ba15265b30c032e8;p=mesa.git gallium: Buffer cache. --- diff --git a/src/gallium/auxiliary/pipebuffer/Makefile b/src/gallium/auxiliary/pipebuffer/Makefile index 0770cad45a1..d654dbcc919 100644 --- a/src/gallium/auxiliary/pipebuffer/Makefile +++ b/src/gallium/auxiliary/pipebuffer/Makefile @@ -6,6 +6,7 @@ LIBNAME = pipebuffer C_SOURCES = \ pb_buffer_fenced.c \ pb_buffer_malloc.c \ + pb_bufmgr_cache.c \ pb_bufmgr_fenced.c \ pb_bufmgr_mm.c \ pb_bufmgr_pool.c \ diff --git a/src/gallium/auxiliary/pipebuffer/SConscript b/src/gallium/auxiliary/pipebuffer/SConscript index 14c3c77e37d..604a217982e 100644 --- a/src/gallium/auxiliary/pipebuffer/SConscript +++ b/src/gallium/auxiliary/pipebuffer/SConscript @@ -5,6 +5,7 @@ pipebuffer = env.ConvenienceLibrary( source = [ 'pb_buffer_fenced.c', 'pb_buffer_malloc.c', + 'pb_bufmgr_cache.c', 'pb_bufmgr_fenced.c', 'pb_bufmgr_mm.c', 'pb_bufmgr_pool.c', diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h b/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h index a2377f70e2f..b2d2520b67e 100644 --- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h +++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h @@ -80,7 +80,7 @@ struct pb_manager /** - * Static buffer pool manager. + * Static buffer pool sub-allocator. * * Manages the allocation of equally sized buffers. It does so by allocating * a single big buffer and divide it equally sized buffers. @@ -94,7 +94,7 @@ pool_bufmgr_create(struct pb_manager *provider, /** - * Wraper around the old memory manager. + * Static sub-allocator based the old memory manager. * * It managers buffers of different sizes. It does so by allocating a buffer * with the size of the heap, and then using the old mm memory manager to manage @@ -114,6 +114,9 @@ mm_bufmgr_create_from_buffer(struct pb_buffer *buffer, size_t size, size_t align2); +/** + * Slab sub-allocator. + */ struct pb_manager * pb_slab_manager_create(struct pb_manager *provider, const struct pb_desc *desc, @@ -122,7 +125,18 @@ pb_slab_manager_create(struct pb_manager *provider, size_t desiredNumBuffers, size_t maxSlabSize, size_t pageAlignment); - + + +/** + * Time-based buffer cache. + * + * This manager keeps a cache of destroyed buffers during a time interval. + */ +struct pb_manager * +pb_cache_manager_create(struct pb_manager *provider, + unsigned usecs); + + /** * Fenced buffer manager. * diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c new file mode 100644 index 00000000000..06de0bb6c37 --- /dev/null +++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c @@ -0,0 +1,299 @@ +/************************************************************************** + * + * Copyright 2007-2008 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 cache. + * + * \author José Fonseca + * \author Thomas Hellström + */ + + +#include "pipe/p_compiler.h" +#include "pipe/p_debug.h" +#include "pipe/p_winsys.h" +#include "pipe/p_thread.h" +#include "pipe/p_util.h" +#include "util/u_double_list.h" +#include "util/u_time.h" + +#include "pb_buffer.h" +#include "pb_bufmgr.h" + + +/** + * Convenience macro (type safe). + */ +#define SUPER(__derived) (&(__derived)->base) + + +struct pb_cache_manager; + + +/** + * Wrapper around a pipe buffer which adds delayed destruction. + */ +struct pb_cache_buffer +{ + struct pb_buffer base; + + struct pb_buffer *buffer; + struct pb_cache_manager *mgr; + + /** Caching time interval */ + struct util_time start, end; + + struct list_head head; +}; + + +struct pb_cache_manager +{ + struct pb_manager base; + + struct pb_manager *provider; + unsigned usecs; + + _glthread_Mutex mutex; + + struct list_head delayed; + size_t numDelayed; +}; + + +static INLINE struct pb_cache_buffer * +pb_cache_buffer(struct pb_buffer *buf) +{ + assert(buf); + return (struct pb_cache_buffer *)buf; +} + + +static INLINE struct pb_cache_manager * +pb_cache_manager(struct pb_manager *mgr) +{ + assert(mgr); + return (struct pb_cache_manager *)mgr; +} + + +/** + * Actually destroy the buffer. + */ +static INLINE void +_pb_cache_buffer_destroy(struct pb_cache_buffer *buf) +{ + struct pb_cache_manager *mgr = buf->mgr; + + LIST_DEL(&buf->head); + assert(mgr->numDelayed); + --mgr->numDelayed; + assert(!buf->base.base.refcount); + pb_reference(&buf->buffer, NULL); + FREE(buf); +} + + +/** + * Free as many cache buffers from the list head as possible. + */ +static void +_pb_cache_buffer_list_check_free(struct pb_cache_manager *mgr) +{ + struct list_head *curr, *next; + struct pb_cache_buffer *buf; + struct util_time now; + + util_time_get(&now); + + curr = mgr->delayed.next; + next = curr->next; + while(curr != &mgr->delayed) { + buf = LIST_ENTRY(struct pb_cache_buffer, curr, head); + + if(util_time_timeout(&buf->start, &buf->end, &now) != 0) + break; + + _pb_cache_buffer_destroy(buf); + + curr = next; + next = curr->next; + } +} + + +static void +pb_cache_buffer_destroy(struct pb_buffer *_buf) +{ + struct pb_cache_buffer *buf = pb_cache_buffer(_buf); + struct pb_cache_manager *mgr = buf->mgr; + + _glthread_LOCK_MUTEX(mgr->mutex); + assert(buf->base.base.refcount == 0); + + _pb_cache_buffer_list_check_free(mgr); + + util_time_get(&buf->start); + util_time_add(&buf->start, mgr->usecs, &buf->end); + LIST_ADDTAIL(&buf->head, &mgr->delayed); + ++mgr->numDelayed; + _glthread_UNLOCK_MUTEX(mgr->mutex); +} + + +static void * +pb_cache_buffer_map(struct pb_buffer *_buf, + unsigned flags) +{ + struct pb_cache_buffer *buf = pb_cache_buffer(_buf); + return pb_map(buf->buffer, flags); +} + + +static void +pb_cache_buffer_unmap(struct pb_buffer *_buf) +{ + struct pb_cache_buffer *buf = pb_cache_buffer(_buf); + pb_unmap(buf->buffer); +} + + +static void +pb_cache_buffer_get_base_buffer(struct pb_buffer *_buf, + struct pb_buffer **base_buf, + unsigned *offset) +{ + struct pb_cache_buffer *buf = pb_cache_buffer(_buf); + pb_get_base_buffer(buf->buffer, base_buf, offset); +} + + +const struct pb_vtbl +pb_cache_buffer_vtbl = { + pb_cache_buffer_destroy, + pb_cache_buffer_map, + pb_cache_buffer_unmap, + pb_cache_buffer_get_base_buffer +}; + + +static struct pb_buffer * +pb_cache_manager_create_buffer(struct pb_manager *_mgr, + size_t size, + const struct pb_desc *desc) +{ + struct pb_cache_manager *mgr = pb_cache_manager(_mgr); + struct pb_cache_buffer *buf; + struct list_head *curr, *next; + struct util_time now; + + util_time_get(&now); + curr = mgr->delayed.next; + next = curr->next; + while(curr != &mgr->delayed) { + buf = LIST_ENTRY(struct pb_cache_buffer, curr, head); + + if(buf->base.base.size == size && + buf->base.base.alignment >= desc->alignment && + (buf->base.base.alignment % desc->alignment) == 0 && + /* buf->base.base.usage == usage */ 1) { + ++buf->base.base.refcount; + return &buf->base; + } + + if(util_time_timeout(&buf->start, &buf->end, &now) != 0) + _pb_cache_buffer_destroy(buf); + + curr = next; + next = curr->next; + } + + buf = CALLOC_STRUCT(pb_cache_buffer); + if(!buf) + return NULL; + + buf->buffer = mgr->provider->create_buffer(mgr->provider, size, desc); + if(!buf->buffer) { + FREE(buf); + return NULL; + } + + buf->base.base.refcount = 1; + buf->base.base.alignment = buf->buffer->base.alignment; + buf->base.base.usage = buf->buffer->base.usage; + buf->base.base.size = buf->buffer->base.size; + + buf->base.vtbl = &pb_cache_buffer_vtbl; + buf->mgr = mgr; + + return &buf->base; +} + + +static void +pb_cache_manager_destroy(struct pb_manager *_mgr) +{ + struct pb_cache_manager *mgr = pb_cache_manager(_mgr); + struct list_head *curr, *next; + struct pb_cache_buffer *buf; + + _glthread_LOCK_MUTEX(mgr->mutex); + curr = mgr->delayed.next; + next = curr->next; + while(curr != &mgr->delayed) { + buf = LIST_ENTRY(struct pb_cache_buffer, curr, head); + _pb_cache_buffer_destroy(buf); + curr = next; + next = curr->next; + } + _glthread_UNLOCK_MUTEX(mgr->mutex); + + FREE(mgr); +} + + +struct pb_manager * +pb_cache_manager_create(struct pb_manager *provider, + unsigned usecs) +{ + struct pb_cache_manager *mgr; + + mgr = (struct pb_cache_manager *)CALLOC(1, sizeof(*mgr)); + if (!mgr) + return NULL; + + mgr->base.destroy = pb_cache_manager_destroy; + mgr->base.create_buffer = pb_cache_manager_create_buffer; + mgr->provider = provider; + mgr->usecs = usecs; + LIST_INITHEAD(&mgr->delayed); + mgr->numDelayed = 0; + _glthread_INIT_MUTEX(mgr->mutex); + + return &mgr->base; +}