d3d12_fence.cpp revision 7ec681f3 
1/*
2 * Copyright © Microsoft Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#include "d3d12_fence.h"
25
26#include "d3d12_context.h"
27#include "d3d12_screen.h"
28
29#include "util/u_memory.h"
30
31#ifdef _WIN32
32static void
33close_event(HANDLE event, int fd)
34{
35   if (event)
36      CloseHandle(event);
37}
38
39static HANDLE
40create_event(int *fd)
41{
42   *fd = -1;
43   return CreateEvent(NULL, FALSE, FALSE, NULL);
44}
45
46static bool
47wait_event(HANDLE event, int event_fd, uint64_t timeout_ns)
48{
49   DWORD timeout_ms = (timeout_ns == PIPE_TIMEOUT_INFINITE) ? INFINITE : timeout_ns / 1000000;
50   return WaitForSingleObject(event, timeout_ms) == WAIT_OBJECT_0;
51}
52#else
53#include <sys/eventfd.h>
54#include <poll.h>
55#include <util/libsync.h>
56
57static void
58close_event(HANDLE event, int fd)
59{
60   if (fd != -1)
61      close(fd);
62}
63
64static HANDLE
65create_event(int *fd)
66{
67   *fd = eventfd(0, 0);
68   return (HANDLE)(size_t)*fd;
69}
70
71static bool
72wait_event(HANDLE event, int event_fd, uint64_t timeout_ns)
73{
74   int timeout_ms = (timeout_ns == PIPE_TIMEOUT_INFINITE) ? -1 : timeout_ns / 1000000;
75   return sync_wait(event_fd, timeout_ms) == 0;
76}
77#endif
78
79static void
80destroy_fence(struct d3d12_fence *fence)
81{
82   close_event(fence->event, fence->event_fd);
83   FREE(fence);
84}
85
86struct d3d12_fence *
87d3d12_create_fence(struct d3d12_screen *screen, struct d3d12_context *ctx)
88{
89   struct d3d12_fence *ret = CALLOC_STRUCT(d3d12_fence);
90   if (!ret) {
91      debug_printf("CALLOC_STRUCT failed\n");
92      return NULL;
93   }
94
95   ret->cmdqueue_fence = ctx->cmdqueue_fence;
96   ret->value = ++ctx->fence_value;
97   ret->event = create_event(&ret->event_fd);
98   if (FAILED(ctx->cmdqueue_fence->SetEventOnCompletion(ret->value, ret->event)))
99      goto fail;
100   if (FAILED(screen->cmdqueue->Signal(ctx->cmdqueue_fence, ret->value)))
101      goto fail;
102
103   pipe_reference_init(&ret->reference, 1);
104   return ret;
105
106fail:
107   destroy_fence(ret);
108   return NULL;
109}
110
111void
112d3d12_fence_reference(struct d3d12_fence **ptr, struct d3d12_fence *fence)
113{
114   if (pipe_reference(&(*ptr)->reference, &fence->reference))
115      destroy_fence((struct d3d12_fence *)*ptr);
116
117   *ptr = fence;
118}
119
120static void
121fence_reference(struct pipe_screen *pscreen,
122                struct pipe_fence_handle **pptr,
123                struct pipe_fence_handle *pfence)
124{
125   d3d12_fence_reference((struct d3d12_fence **)pptr, d3d12_fence(pfence));
126}
127
128bool
129d3d12_fence_finish(struct d3d12_fence *fence, uint64_t timeout_ns)
130{
131   if (fence->signaled)
132      return true;
133
134   bool complete = fence->cmdqueue_fence->GetCompletedValue() >= fence->value;
135   if (!complete && timeout_ns)
136      complete = wait_event(fence->event, fence->event_fd, timeout_ns);
137
138   fence->signaled = complete;
139   return complete;
140}
141
142static bool
143fence_finish(struct pipe_screen *pscreen, struct pipe_context *pctx,
144             struct pipe_fence_handle *pfence, uint64_t timeout_ns)
145{
146   bool ret = d3d12_fence_finish(d3d12_fence(pfence), timeout_ns);
147   if (ret && pctx) {
148      struct d3d12_context *ctx = d3d12_context(pctx);
149      d3d12_foreach_submitted_batch(ctx, batch)
150         d3d12_reset_batch(ctx, batch, 0);
151   }
152   return ret;
153}
154
155void
156d3d12_screen_fence_init(struct pipe_screen *pscreen)
157{
158   pscreen->fence_reference = fence_reference;
159   pscreen->fence_finish = fence_finish;
160}
161