1 /* Debugging routines for the remote server for GDB.
2 Copyright (C) 2014-2019 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #if !defined (IN_PROCESS_AGENT)
26 /* Output file for debugging. Default to standard error. */
27 FILE *debug_file
= stderr
;
32 /* Include timestamps in debugging output. */
35 #if !defined (IN_PROCESS_AGENT)
40 debug_set_output (const char *new_debug_file
)
42 /* Close any existing file and reset to standard error. */
43 if (debug_file
!= stderr
)
49 /* Catch empty filenames. */
50 if (new_debug_file
== nullptr || strlen (new_debug_file
) == 0)
53 FILE *fptr
= fopen (new_debug_file
, "w");
57 debug_printf ("Cannot open %s for writing. %s. Switching to stderr.\n",
58 new_debug_file
, strerror (errno
));
67 /* Print a debugging message.
68 If the text begins a new line it is preceded by a timestamp.
69 We don't get fancy with newline checking, we just check whether the
70 previous call ended with "\n". */
73 debug_vprintf (const char *format
, va_list ap
)
75 #if !defined (IN_PROCESS_AGENT)
76 /* N.B. Not thread safe, and can't be used, as is, with IPA. */
77 static int new_line
= 1;
79 if (debug_timestamp
&& new_line
)
81 using namespace std::chrono
;
83 steady_clock::time_point now
= steady_clock::now ();
84 seconds s
= duration_cast
<seconds
> (now
.time_since_epoch ());
85 microseconds us
= duration_cast
<microseconds
> (now
.time_since_epoch ()) - s
;
87 fprintf (debug_file
, "%ld.%06ld ", (long) s
.count (), (long) us
.count ());
91 vfprintf (debug_file
, format
, ap
);
93 #if !defined (IN_PROCESS_AGENT)
95 new_line
= format
[strlen (format
) - 1] == '\n';
99 /* Flush debugging output.
100 This is called, for example, when starting an inferior to ensure all debug
101 output thus far appears before any inferior output. */
109 /* Notify the user that the code is entering FUNCTION_NAME.
110 FUNCTION_NAME is the name of the calling function, or NULL if unknown.
112 This is intended to be called via the debug_enter macro. */
115 do_debug_enter (const char *function_name
)
117 if (function_name
!= NULL
)
118 debug_printf (">>>> entering %s\n", function_name
);
121 /* Notify the user that the code is exiting FUNCTION_NAME.
122 FUNCTION_NAME is the name of the calling function, or NULL if unknown.
124 This is intended to be called via the debug_exit macro. */
127 do_debug_exit (const char *function_name
)
129 if (function_name
!= NULL
)
130 debug_printf ("<<<< exiting %s\n", function_name
);
136 debug_write (const void *buf
, size_t nbyte
)
138 int fd
= fileno (debug_file
);
139 return write (fd
, buf
, nbyte
);
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