| /* Debugging routines for the remote server for GDB. |
| Copyright (C) 2014-2024 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program 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 of the License, or |
| (at your option) any later version. |
| |
| This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include <chrono> |
| |
| #if !defined (IN_PROCESS_AGENT) |
| bool remote_debug = false; |
| #endif |
| |
| /* Output file for debugging. Default to standard error. */ |
| static FILE *debug_file = stderr; |
| |
| /* See debug.h. */ |
| bool debug_threads; |
| |
| /* Include timestamps in debugging output. */ |
| int debug_timestamp; |
| |
| #if !defined (IN_PROCESS_AGENT) |
| |
| /* See debug.h. */ |
| |
| void |
| debug_set_output (const char *new_debug_file) |
| { |
| /* Close any existing file and reset to standard error. */ |
| if (debug_file != stderr) |
| { |
| fclose (debug_file); |
| } |
| debug_file = stderr; |
| |
| /* Catch empty filenames. */ |
| if (new_debug_file == nullptr || strlen (new_debug_file) == 0) |
| return; |
| |
| FILE *fptr = fopen (new_debug_file, "w"); |
| |
| if (fptr == nullptr) |
| { |
| debug_printf ("Cannot open %s for writing. %s. Switching to stderr.\n", |
| new_debug_file, safe_strerror (errno)); |
| return; |
| } |
| |
| debug_file = fptr; |
| } |
| |
| #endif |
| |
| /* See gdbsupport/common-debug.h. */ |
| |
| int debug_print_depth = 0; |
| |
| /* Print a debugging message. |
| If the text begins a new line it is preceded by a timestamp. |
| We don't get fancy with newline checking, we just check whether the |
| previous call ended with "\n". */ |
| |
| void |
| debug_vprintf (const char *format, va_list ap) |
| { |
| #if !defined (IN_PROCESS_AGENT) |
| /* N.B. Not thread safe, and can't be used, as is, with IPA. */ |
| static int new_line = 1; |
| |
| if (debug_timestamp && new_line) |
| { |
| using namespace std::chrono; |
| |
| steady_clock::time_point now = steady_clock::now (); |
| seconds s = duration_cast<seconds> (now.time_since_epoch ()); |
| microseconds us = duration_cast<microseconds> (now.time_since_epoch ()) - s; |
| |
| fprintf (debug_file, "%ld.%06ld ", (long) s.count (), (long) us.count ()); |
| } |
| #endif |
| |
| vfprintf (debug_file, format, ap); |
| |
| #if !defined (IN_PROCESS_AGENT) |
| if (*format) |
| new_line = format[strlen (format) - 1] == '\n'; |
| #endif |
| } |
| |
| /* Flush debugging output. |
| This is called, for example, when starting an inferior to ensure all debug |
| output thus far appears before any inferior output. */ |
| |
| void |
| debug_flush (void) |
| { |
| fflush (debug_file); |
| } |
| |
| /* See debug.h. */ |
| |
| ssize_t |
| debug_write (const void *buf, size_t nbyte) |
| { |
| int fd = fileno (debug_file); |
| return write (fd, buf, nbyte); |
| } |