1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/* Internals of libgccjit: logging
Copyright (C) 2014-2018 Free Software Foundation, Inc.
Contributed by David Malcolm <dmalcolm@redhat.com>.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "toplev.h" /* for print_version */
#include "jit-logging.h"
namespace gcc {
namespace jit {
/* Implementation of class gcc::jit::logger. */
/* The constructor for gcc::jit::logger, used by
gcc_jit_context_set_logfile. */
logger::logger (FILE *f_out,
int, /* flags */
int /* verbosity */) :
m_refcount (0),
m_f_out (f_out),
m_indent_level (0),
m_log_refcount_changes (false)
{
/* Begin the log by writing the GCC version. */
print_version (f_out, "JIT:", false);
}
/* The destructor for gcc::jit::logger, invoked via
the decref method when the refcount hits zero.
Note that we do not close the underlying FILE * (m_f_out). */
logger::~logger ()
{
/* This should be the last message emitted. */
log ("%s", __PRETTY_FUNCTION__);
gcc_assert (m_refcount == 0);
}
/* Increment the reference count of the gcc::jit::logger. */
void
logger::incref (const char *reason)
{
m_refcount++;
if (m_log_refcount_changes)
log ("%s: reason: %s refcount now %i ",
__PRETTY_FUNCTION__, reason, m_refcount);
}
/* Decrement the reference count of the gcc::jit::logger,
deleting it if nothing is referring to it. */
void
logger::decref (const char *reason)
{
gcc_assert (m_refcount > 0);
--m_refcount;
if (m_log_refcount_changes)
log ("%s: reason: %s refcount now %i",
__PRETTY_FUNCTION__, reason, m_refcount);
if (m_refcount == 0)
delete this;
}
/* Write a formatted message to the log, by calling the log_va method. */
void
logger::log (const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
log_va (fmt, ap);
va_end (ap);
}
/* Write an indented line to the log file.
We explicitly flush after each line: if something crashes the process,
we want the logfile/stream to contain the most up-to-date hint about the
last thing that was happening, without it being hidden in an in-process
buffer. */
void
logger::log_va (const char *fmt, va_list ap)
{
fprintf (m_f_out, "JIT: ");
for (int i = 0; i < m_indent_level; i++)
fputc (' ', m_f_out);
vfprintf (m_f_out, fmt, ap);
fprintf (m_f_out, "\n");
fflush (m_f_out);
}
/* Record the entry within a particular scope, indenting subsequent
log lines accordingly. */
void
logger::enter_scope (const char *scope_name)
{
log ("entering: %s", scope_name);
m_indent_level += 1;
}
/* Record the exit from a particular scope, restoring the indent level to
before the scope was entered. */
void
logger::exit_scope (const char *scope_name)
{
if (m_indent_level)
m_indent_level -= 1;
else
log ("(mismatching indentation)");
log ("exiting: %s", scope_name);
}
/* Implementation of class gcc::jit::log_user. */
/* The constructor for gcc::jit::log_user. */
log_user::log_user (logger *logger) : m_logger (logger)
{
if (m_logger)
m_logger->incref("log_user ctor");
}
/* The destructor for gcc::jit::log_user. */
log_user::~log_user ()
{
if (m_logger)
m_logger->decref("log_user dtor");
}
/* Set the logger for a gcc::jit::log_user, managing the reference counts
of the old and new logger (either of which might be NULL). */
void
log_user::set_logger (logger *logger)
{
if (logger)
logger->incref ("log_user::set_logger");
if (m_logger)
m_logger->decref ("log_user::set_logger");
m_logger = logger;
}
} // namespace gcc::jit
} // namespace gcc
|
