1/*
2 * Copyright 2017 Advanced Micro Devices, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE.
23 *
24 */
25
26/**
27 * \file u_async_debug.h
28 * Provides a helper implementation of pipe_debug_callback which allows debug
29 * messages from non-application threads to be passed back to the application
30 * thread.
31 */
32
33#ifndef UTIL_ASYNC_DEBUG_H
34#define UTIL_ASYNC_DEBUG_H
35
36#include "pipe/p_state.h"
37
38#include "util/simple_mtx.h"
39
40struct util_debug_message {
41   unsigned *id;
42   enum pipe_debug_type type;
43   char *msg;
44};
45
46struct util_async_debug_callback {
47   struct pipe_debug_callback base;
48
49   simple_mtx_t lock;
50   unsigned count;
51   unsigned max;
52   struct util_debug_message *messages;
53};
54
55void
56u_async_debug_init(struct util_async_debug_callback *adbg);
57void
58u_async_debug_cleanup(struct util_async_debug_callback *adbg);
59
60void
61_u_async_debug_drain(struct util_async_debug_callback *adbg,
62                     struct pipe_debug_callback *dst);
63
64static inline void
65u_async_debug_drain(struct util_async_debug_callback *adbg,
66                    struct pipe_debug_callback *dst)
67{
68   /* Read the count without taking the lock to avoid atomics in the fast path.
69    * We'll re-read the count after taking the lock. */
70   if (adbg->count)
71      _u_async_debug_drain(adbg, dst);
72}
73
74#endif /* UTIL_ASYNC_DEBUG_H */
75