Commit | Line | Data |
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87ce2a04 | 1 | /* Debugging routines for the remote server for GDB. |
42a4f53d | 2 | Copyright (C) 2014-2019 Free Software Foundation, Inc. |
87ce2a04 DE |
3 | |
4 | This file is part of GDB. | |
5 | ||
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. | |
10 | ||
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. | |
15 | ||
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/>. */ | |
18 | ||
19 | #include "server.h" | |
dcb07cfa | 20 | #include <chrono> |
87ce2a04 | 21 | |
c1bc0935 AH |
22 | #if !defined (IN_PROCESS_AGENT) |
23 | int remote_debug = 0; | |
24 | #endif | |
25 | ||
aeb2e706 AH |
26 | /* Output file for debugging. Default to standard error. */ |
27 | FILE *debug_file = stderr; | |
28 | ||
87ce2a04 DE |
29 | /* Enable miscellaneous debugging output. The name is historical - it |
30 | was originally used to debug LinuxThreads support. */ | |
31 | int debug_threads; | |
32 | ||
33 | /* Include timestamps in debugging output. */ | |
34 | int debug_timestamp; | |
35 | ||
aeb2e706 AH |
36 | #if !defined (IN_PROCESS_AGENT) |
37 | ||
38 | /* See debug.h. */ | |
39 | ||
40 | void | |
41 | debug_set_output (const char *new_debug_file) | |
42 | { | |
43 | /* Close any existing file and reset to standard error. */ | |
44 | if (debug_file != stderr) | |
45 | { | |
46 | fclose (debug_file); | |
47 | } | |
48 | debug_file = stderr; | |
49 | ||
50 | /* Catch empty filenames. */ | |
51 | if (new_debug_file == nullptr || strlen (new_debug_file) == 0) | |
52 | return; | |
53 | ||
54 | FILE *fptr = fopen (new_debug_file, "w"); | |
55 | ||
56 | if (fptr == nullptr) | |
57 | { | |
58 | debug_printf ("Cannot open %s for writing. %s. Switching to stderr.\n", | |
59 | new_debug_file, strerror (errno)); | |
60 | return; | |
61 | } | |
62 | ||
63 | debug_file = fptr; | |
64 | } | |
65 | ||
66 | #endif | |
67 | ||
87ce2a04 | 68 | /* Print a debugging message. |
dcb07cfa | 69 | If the text begins a new line it is preceded by a timestamp. |
87ce2a04 DE |
70 | We don't get fancy with newline checking, we just check whether the |
71 | previous call ended with "\n". */ | |
72 | ||
73 | void | |
34abf635 | 74 | debug_vprintf (const char *format, va_list ap) |
87ce2a04 | 75 | { |
0b04e523 | 76 | #if !defined (IN_PROCESS_AGENT) |
87ce2a04 DE |
77 | /* N.B. Not thread safe, and can't be used, as is, with IPA. */ |
78 | static int new_line = 1; | |
79 | ||
80 | if (debug_timestamp && new_line) | |
81 | { | |
dcb07cfa | 82 | using namespace std::chrono; |
87ce2a04 | 83 | |
dcb07cfa PA |
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; | |
87ce2a04 | 87 | |
aeb2e706 | 88 | fprintf (debug_file, "%ld.%06ld ", (long) s.count (), (long) us.count ()); |
87ce2a04 DE |
89 | } |
90 | #endif | |
91 | ||
aeb2e706 | 92 | vfprintf (debug_file, format, ap); |
87ce2a04 | 93 | |
0b04e523 | 94 | #if !defined (IN_PROCESS_AGENT) |
34abf635 GB |
95 | if (*format) |
96 | new_line = format[strlen (format) - 1] == '\n'; | |
87ce2a04 DE |
97 | #endif |
98 | } | |
99 | ||
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. */ | |
103 | ||
104 | void | |
105 | debug_flush (void) | |
106 | { | |
aeb2e706 | 107 | fflush (debug_file); |
87ce2a04 DE |
108 | } |
109 | ||
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. | |
112 | ||
113 | This is intended to be called via the debug_enter macro. */ | |
114 | ||
115 | void | |
116 | do_debug_enter (const char *function_name) | |
117 | { | |
118 | if (function_name != NULL) | |
119 | debug_printf (">>>> entering %s\n", function_name); | |
120 | } | |
121 | ||
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. | |
124 | ||
125 | This is intended to be called via the debug_exit macro. */ | |
126 | ||
127 | void | |
128 | do_debug_exit (const char *function_name) | |
129 | { | |
130 | if (function_name != NULL) | |
131 | debug_printf ("<<<< exiting %s\n", function_name); | |
132 | } | |
a7e559cc AH |
133 | |
134 | /* See debug.h. */ | |
135 | ||
8d6a48df | 136 | ssize_t |
a7e559cc AH |
137 | debug_write (const void *buf, size_t nbyte) |
138 | { | |
139 | int fd = fileno (debug_file); | |
140 | return write (fd, buf, nbyte); | |
141 | } |