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;
29 /* Enable miscellaneous debugging output. The name is historical - it
30 was originally used to debug LinuxThreads support. */
33 /* Include timestamps in debugging output. */
36 #if !defined (IN_PROCESS_AGENT)
41 debug_set_output (const char *new_debug_file)
43 /* Close any existing file and reset to standard error. */
44 if (debug_file != stderr)
50 /* Catch empty filenames. */
51 if (new_debug_file == nullptr || strlen (new_debug_file) == 0)
54 FILE *fptr = fopen (new_debug_file, "w");
58 debug_printf ("Cannot open %s for writing. %s. Switching to stderr.\n",
59 new_debug_file, strerror (errno));
68 /* Print a debugging message.
69 If the text begins a new line it is preceded by a timestamp.
70 We don't get fancy with newline checking, we just check whether the
71 previous call ended with "\n". */
74 debug_vprintf (const char *format, va_list ap)
76 #if !defined (IN_PROCESS_AGENT)
77 /* N.B. Not thread safe, and can't be used, as is, with IPA. */
78 static int new_line = 1;
80 if (debug_timestamp && new_line)
82 using namespace std::chrono;
84 steady_clock::time_point now = steady_clock::now ();
85 seconds s = duration_cast<seconds> (now.time_since_epoch ());
86 microseconds us = duration_cast<microseconds> (now.time_since_epoch ()) - s;
88 fprintf (debug_file, "%ld.%06ld ", (long) s.count (), (long) us.count ());
92 vfprintf (debug_file, format, ap);
94 #if !defined (IN_PROCESS_AGENT)
96 new_line = format[strlen (format) - 1] == '\n';
100 /* Flush debugging output.
101 This is called, for example, when starting an inferior to ensure all debug
102 output thus far appears before any inferior output. */
110 /* Notify the user that the code is entering FUNCTION_NAME.
111 FUNCTION_NAME is the name of the calling function, or NULL if unknown.
113 This is intended to be called via the debug_enter macro. */
116 do_debug_enter (const char *function_name)
118 if (function_name != NULL)
119 debug_printf (">>>> entering %s\n", function_name);
122 /* Notify the user that the code is exiting FUNCTION_NAME.
123 FUNCTION_NAME is the name of the calling function, or NULL if unknown.
125 This is intended to be called via the debug_exit macro. */
128 do_debug_exit (const char *function_name)
130 if (function_name != NULL)
131 debug_printf ("<<<< exiting %s\n", function_name);