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 util_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#include "util/u_debug.h"
38#include "util/simple_mtx.h"
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44struct util_debug_message {
45   unsigned *id;
46   enum util_debug_type type;
47   char *msg;
48};
49
50struct util_async_debug_callback {
51   struct util_debug_callback base;
52
53   simple_mtx_t lock;
54   unsigned count;
55   unsigned max;
56   struct util_debug_message *messages;
57};
58
59void
60u_async_debug_init(struct util_async_debug_callback *adbg);
61void
62u_async_debug_cleanup(struct util_async_debug_callback *adbg);
63
64void
65_u_async_debug_drain(struct util_async_debug_callback *adbg,
66                     struct util_debug_callback *dst);
67
68static inline void
69u_async_debug_drain(struct util_async_debug_callback *adbg,
70                    struct util_debug_callback *dst)
71{
72   /* Read the count without taking the lock to avoid atomics in the fast path.
73    * We'll re-read the count after taking the lock. */
74   if (adbg->count)
75      _u_async_debug_drain(adbg, dst);
76}
77
78#ifdef __cplusplus
79}
80#endif
81
82#endif /* UTIL_ASYNC_DEBUG_H */
83