1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/************************************************************************** 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright 2009 VMware, Inc. 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * All Rights Reserved. 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * "Software"), to deal in the Software without restriction, including 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * without limitation the rights to use, copy, modify, merge, publish, 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * distribute, sub license, and/or sell copies of the Software, and to 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * permit persons to whom the Software is furnished to do so, subject to 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the following conditions: 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * next paragraph) shall be included in all copies or substantial portions 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * of the Software. 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org **************************************************************************/ 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "pipe/p_screen.h" 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "util/u_memory.h" 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "lp_debug.h" 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "lp_fence.h" 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Create a new fence object. 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The rank will be the number of bins in the scene. Whenever a rendering 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * thread hits a fence command, it'll increment the fence counter. When 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the counter == the rank, the fence is finished. 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * \param rank the expected finished value of the fence counter. 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct lp_fence * 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orglp_fence_create(unsigned rank) 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org static int fence_id; 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct lp_fence *fence = CALLOC_STRUCT(lp_fence); 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!fence) 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return NULL; 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_reference_init(&fence->reference, 1); 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_mutex_init(fence->mutex); 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_condvar_init(fence->signalled); 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org fence->id = fence_id++; 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org fence->rank = rank; 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (LP_DEBUG & DEBUG_FENCE) 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org debug_printf("%s %d\n", __FUNCTION__, fence->id); 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return fence; 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** Destroy a fence. Called when refcount hits zero. */ 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orglp_fence_destroy(struct lp_fence *fence) 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (LP_DEBUG & DEBUG_FENCE) 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org debug_printf("%s %d\n", __FUNCTION__, fence->id); 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_mutex_destroy(fence->mutex); 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_condvar_destroy(fence->signalled); 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org FREE(fence); 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Called by the rendering threads to increment the fence counter. 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * When the counter == the rank, the fence is finished. 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orglp_fence_signal(struct lp_fence *fence) 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (LP_DEBUG & DEBUG_FENCE) 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org debug_printf("%s %d\n", __FUNCTION__, fence->id); 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_mutex_lock(fence->mutex); 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org fence->count++; 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(fence->count <= fence->rank); 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (LP_DEBUG & DEBUG_FENCE) 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org debug_printf("%s count=%u rank=%u\n", __FUNCTION__, 98f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org fence->count, fence->rank); 99f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 100f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Wakeup all threads waiting on the mutex: 101f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 102f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_condvar_broadcast(fence->signalled); 103f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 104f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_mutex_unlock(fence->mutex); 105f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 106f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 107f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgboolean 108f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orglp_fence_signalled(struct lp_fence *f) 109f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 110f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return f->count == f->rank; 111f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 112f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 113f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 114f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orglp_fence_wait(struct lp_fence *f) 115f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 116f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (LP_DEBUG & DEBUG_FENCE) 117f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org debug_printf("%s %d\n", __FUNCTION__, f->id); 118f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 119f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_mutex_lock(f->mutex); 120f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(f->issued); 121f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org while (f->count < f->rank) { 122f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_condvar_wait(f->signalled, f->mutex); 123f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 124f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pipe_mutex_unlock(f->mutex); 125f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 126f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 127f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 128