etnaviv: replace all dup() with os_dupfd_cloexec()
[mesa.git] / src / gallium / drivers / etnaviv / etnaviv_fence.c
1 /*
2 * Copyright (c) 2012-2015 Etnaviv Project
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, sub license,
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
12 * next paragraph) shall be included in all copies or substantial portions
13 * of the 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 NON-INFRINGEMENT. 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
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Wladimir J. van der Laan <laanwj@gmail.com>
25 * Rob Clark <robclark@freedesktop.org>
26 */
27
28 #include <libsync.h>
29
30 #include "etnaviv_fence.h"
31 #include "etnaviv_context.h"
32 #include "etnaviv_screen.h"
33
34 #include "util/os_file.h"
35 #include "util/u_inlines.h"
36 #include "util/u_memory.h"
37
38 struct pipe_fence_handle {
39 struct pipe_reference reference;
40 struct etna_screen *screen;
41 int fence_fd;
42 uint32_t timestamp;
43 };
44
45 static void
46 etna_fence_destroy(struct pipe_fence_handle *fence)
47 {
48 if (fence->fence_fd != -1)
49 close(fence->fence_fd);
50 FREE(fence);
51 }
52
53 static void
54 etna_screen_fence_reference(struct pipe_screen *pscreen,
55 struct pipe_fence_handle **ptr,
56 struct pipe_fence_handle *fence)
57 {
58 if (pipe_reference(&(*ptr)->reference, &fence->reference))
59 etna_fence_destroy(*ptr);
60
61 *ptr = fence;
62 }
63
64 static bool
65 etna_screen_fence_finish(struct pipe_screen *pscreen, struct pipe_context *ctx,
66 struct pipe_fence_handle *fence, uint64_t timeout)
67 {
68 if (fence->fence_fd != -1)
69 return !sync_wait(fence->fence_fd, timeout / 1000000);
70
71 if (etna_pipe_wait_ns(fence->screen->pipe, fence->timestamp, timeout))
72 return false;
73
74 return true;
75 }
76
77 void
78 etna_create_fence_fd(struct pipe_context *pctx,
79 struct pipe_fence_handle **pfence, int fd,
80 enum pipe_fd_type type)
81 {
82 assert(type == PIPE_FD_TYPE_NATIVE_SYNC);
83 *pfence = etna_fence_create(pctx, os_dupfd_cloexec(fd));
84 }
85
86 void
87 etna_fence_server_sync(struct pipe_context *pctx,
88 struct pipe_fence_handle *pfence)
89 {
90 struct etna_context *ctx = etna_context(pctx);
91
92 if (pfence->fence_fd != -1)
93 sync_accumulate("etnaviv", &ctx->in_fence_fd, pfence->fence_fd);
94 }
95
96 static int
97 etna_screen_fence_get_fd(struct pipe_screen *pscreen,
98 struct pipe_fence_handle *pfence)
99 {
100 return os_dupfd_cloexec(pfence->fence_fd);
101 }
102
103 struct pipe_fence_handle *
104 etna_fence_create(struct pipe_context *pctx, int fence_fd)
105 {
106 struct pipe_fence_handle *fence;
107 struct etna_context *ctx = etna_context(pctx);
108
109 fence = CALLOC_STRUCT(pipe_fence_handle);
110 if (!fence)
111 return NULL;
112
113 pipe_reference_init(&fence->reference, 1);
114
115 fence->screen = ctx->screen;
116 fence->timestamp = etna_cmd_stream_timestamp(ctx->stream);
117 fence->fence_fd = fence_fd;
118
119 return fence;
120 }
121
122 void
123 etna_fence_screen_init(struct pipe_screen *pscreen)
124 {
125 pscreen->fence_reference = etna_screen_fence_reference;
126 pscreen->fence_finish = etna_screen_fence_finish;
127 pscreen->fence_get_fd = etna_screen_fence_get_fd;
128 }