121 lines
3 KiB
C++
121 lines
3 KiB
C++
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/* Debugging routines for the remote server for GDB.
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Copyright (C) 2014-2022 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "server.h"
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#include <chrono>
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#if !defined (IN_PROCESS_AGENT)
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bool remote_debug = false;
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#endif
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/* Output file for debugging. Default to standard error. */
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static FILE *debug_file = stderr;
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/* See debug.h. */
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bool debug_threads;
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/* Include timestamps in debugging output. */
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int debug_timestamp;
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#if !defined (IN_PROCESS_AGENT)
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/* See debug.h. */
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void
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debug_set_output (const char *new_debug_file)
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{
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/* Close any existing file and reset to standard error. */
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if (debug_file != stderr)
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{
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fclose (debug_file);
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}
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debug_file = stderr;
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/* Catch empty filenames. */
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if (new_debug_file == nullptr || strlen (new_debug_file) == 0)
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return;
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FILE *fptr = fopen (new_debug_file, "w");
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if (fptr == nullptr)
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{
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debug_printf ("Cannot open %s for writing. %s. Switching to stderr.\n",
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new_debug_file, safe_strerror (errno));
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return;
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}
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debug_file = fptr;
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}
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#endif
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/* See gdbsupport/common-debug.h. */
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int debug_print_depth = 0;
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/* Print a debugging message.
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If the text begins a new line it is preceded by a timestamp.
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We don't get fancy with newline checking, we just check whether the
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previous call ended with "\n". */
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void
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debug_vprintf (const char *format, va_list ap)
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{
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#if !defined (IN_PROCESS_AGENT)
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/* N.B. Not thread safe, and can't be used, as is, with IPA. */
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static int new_line = 1;
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if (debug_timestamp && new_line)
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{
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using namespace std::chrono;
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steady_clock::time_point now = steady_clock::now ();
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seconds s = duration_cast<seconds> (now.time_since_epoch ());
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microseconds us = duration_cast<microseconds> (now.time_since_epoch ()) - s;
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fprintf (debug_file, "%ld.%06ld ", (long) s.count (), (long) us.count ());
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}
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#endif
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vfprintf (debug_file, format, ap);
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#if !defined (IN_PROCESS_AGENT)
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if (*format)
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new_line = format[strlen (format) - 1] == '\n';
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#endif
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}
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/* Flush debugging output.
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This is called, for example, when starting an inferior to ensure all debug
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output thus far appears before any inferior output. */
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void
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debug_flush (void)
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{
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fflush (debug_file);
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}
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/* See debug.h. */
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ssize_t
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debug_write (const void *buf, size_t nbyte)
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{
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int fd = fileno (debug_file);
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return write (fd, buf, nbyte);
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}
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