/* Debugging routines for the remote server for GDB.
- Copyright (C) 2014 Free Software Foundation, Inc.
+ Copyright (C) 2014-2020 Free Software Foundation, Inc.
This file is part of GDB.
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "server.h"
-#include <sys/time.h>
+#include <chrono>
-/* Enable miscellaneous debugging output. The name is historical - it
- was originally used to debug LinuxThreads support. */
+#if !defined (IN_PROCESS_AGENT)
+int remote_debug = 0;
+#endif
+
+/* Output file for debugging. Default to standard error. */
+FILE *debug_file = stderr;
+
+/* See debug.h. */
int 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
+
/* Print a debugging message.
- If the text begins a new line it is preceded by a timestamp, if the
- system has gettimeofday.
+ 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_printf (const char *msg, ...)
+debug_vprintf (const char *format, va_list ap)
{
- va_list args;
-#if defined (HAVE_GETTIMEOFDAY) && !defined (IN_PROCESS_AGENT)
+#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)
{
- struct timeval tm;
+ using namespace std::chrono;
- gettimeofday (&tm, NULL);
+ 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;
- /* If gettimeofday doesn't exist, and as a portability solution it has
- been replaced with, e.g., time, then it doesn't make sense to print
- the microseconds field. Is there a way to check for that? */
- fprintf (stderr, "%ld:%06ld ", (long) tm.tv_sec, (long) tm.tv_usec);
+ fprintf (debug_file, "%ld.%06ld ", (long) s.count (), (long) us.count ());
}
#endif
- va_start (args, msg);
- vfprintf (stderr, msg, args);
- va_end (args);
+ vfprintf (debug_file, format, ap);
-#if defined (HAVE_GETTIMEOFDAY) && !defined (IN_PROCESS_AGENT)
- if (*msg)
- new_line = msg[strlen (msg) - 1] == '\n';
+#if !defined (IN_PROCESS_AGENT)
+ if (*format)
+ new_line = format[strlen (format) - 1] == '\n';
#endif
}
void
debug_flush (void)
{
- fflush (stderr);
+ fflush (debug_file);
}
/* Notify the user that the code is entering FUNCTION_NAME.
if (function_name != NULL)
debug_printf ("<<<< exiting %s\n", function_name);
}
+
+/* See debug.h. */
+
+ssize_t
+debug_write (const void *buf, size_t nbyte)
+{
+ int fd = fileno (debug_file);
+ return write (fd, buf, nbyte);
+}