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1 /* -*- mesa-c++  -*-
2  *
3  * Copyright (c) 2018-2019 Collabora LTD
4  *
5  * Author: Gert Wollny <gert.wollny@collabora.com>
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a
8  * copy of this software and associated documentation files (the "Software"),
9  * to deal in the Software without restriction, including without limitation
10  * on the rights to use, copy, modify, merge, publish, distribute, sub
11  * license, and/or sell copies of the Software, and to permit persons to whom
12  * the Software is furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the next
15  * paragraph) shall be included in all copies or substantial portions of the
16  * Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
25  */
26 
27 #ifndef SFN_STDERR_STREAMLOG_H
28 #define SFN_STDERR_STREAMLOG_H
29 
30 
31 #include <streambuf>
32 #include <ostream>
33 #include <fstream>
34 #include "compiler/nir/nir.h"
35 
36 namespace r600 {
37 /* Implement some logging for shader-from-nir
38 
39 */
40 
41 class stderr_streambuf : public std::streambuf
42 {
43 public:
44    stderr_streambuf();
45 protected:
46    int sync();
47    int overflow(int c);
48    std::streamsize xsputn ( const char *s, std::streamsize n );
49 };
50 
51 class SfnLog {
52 public:
53    enum LogFlag {
54       instr = 1 << 0,
55       r600ir = 1 << 1,
56       cc     = 1 << 2,
57       err    = 1 << 3,
58       shader_info = 1 << 4,
59       test_shader = 1 << 5,
60       reg = 1 << 6,
61       io = 1 << 7,
62       assembly = 1 << 8,
63       flow = 1 << 9,
64       merge = 1 << 10,
65       tex = 1 << 11,
66       trans = 1 << 12,
67       schedule = 1 << 13,
68       opt = 1 << 14,
69       all = (1 << 15) - 1,
70       nomerge = 1 << 16,
71       steps = 1 << 17,
72       noopt = 1 << 18
73    };
74 
75    SfnLog();
76 
77    /** a special handling to set the output level "inline"
78        \param l the level of the following messages
79      */
80    SfnLog& operator << (LogFlag const l);
81 
82    /* general output routine; output is only given, if the log flags and the
83     * currently active log mask overlap
84       \returns a reference to this object
85    */
86    template <class T>
87    SfnLog& operator << (const T&  text)
88    {
89       if (m_active_log_flags & m_log_mask)
90          m_output << text;
91 
92       return *this;
93    }
94 
95    /* A funny construct to enable std::endl to work on this stream
96       idea of Dave Brondsema:
97       http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8567
98     */
99    SfnLog& operator << (std::ostream & (*f)(std::ostream&));
100 
101    SfnLog& operator << (nir_shader &sh);
102 
103    SfnLog& operator << (nir_instr& instr);
104 
has_debug_flag(uint64_t flag)105    int has_debug_flag(uint64_t flag) {
106       return (m_log_mask & flag) == flag;
107    }
108 
109 private:
110    uint64_t m_active_log_flags;
111    uint64_t m_log_mask;
112    stderr_streambuf m_buf;
113    std::ostream m_output;
114 };
115 
116 class SfnTrace {
117 public:
118    SfnTrace(SfnLog::LogFlag flag, const char *msg);
119    ~SfnTrace();
120 private:
121    SfnLog::LogFlag m_flag;
122    const char *m_msg;
123    static int m_indention;
124 };
125 
126 
127 #ifndef NDEBUG
128 #define SFN_TRACE_FUNC(LEVEL, MSG) SfnTrace __trace(LEVEL, MSG)
129 #else
130 #define SFN_TRACE_FUNC(LEVEL, MSG)
131 #endif
132 
133 extern SfnLog sfn_log;
134 
135 }
136 #endif // SFN_STDERR_STREAMBUF_H
137