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- /* Debugging routines for the remote server for GDB.
- Copyright (C) 2014-2022 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 "server.h"
- #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);
- }
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