binutils-gdb/gdb/maint.h
Tom Tromey 3847a7bfbf Add timestamps to "maint time" output
Currently "maint time" will print the amount of time a command took.
Sometimes, though, it's useful to have a timestamp as well -- for
example if one is correlating a gdb log with some other log.

This patch adds a timestamp to the start and end of each command when
this setting is in effect.

This also removes a "//" comment and changes scoped_command_stats to
use DISABLE_COPY_AND_ASSIGN; two minor things I noticed while working
on the patch.

Tested on x86-64 Fedora 29.

gdb/ChangeLog
2019-06-06  Tom Tromey  <tromey@adacore.com>

	* maint.h (class scoped_command_stats): Use
	DISABLE_COPY_AND_ASSIGN.
	<print_time>: New method.
	* maint.c (scoped_command_stats, ~scoped_command_stats): Call
	print_time.
	(scoped_command_stats::print_time): New method.

gdb/testsuite/ChangeLog
2019-06-06  Tom Tromey  <tromey@adacore.com>

	* gdb.base/maint.exp: Expect command started/finished output.
2019-06-06 08:53:56 -06:00

67 lines
2.0 KiB
C++

/* Support for GDB maintenance commands.
Copyright (C) 2013-2019 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/>. */
#ifndef MAINT_H
#define MAINT_H
#include "common/run-time-clock.h"
#include <chrono>
extern void set_per_command_time (int);
extern void set_per_command_space (int);
/* Records a run time and space usage to be used as a base for
reporting elapsed time or change in space. */
class scoped_command_stats
{
public:
explicit scoped_command_stats (bool msg_type);
~scoped_command_stats ();
private:
DISABLE_COPY_AND_ASSIGN (scoped_command_stats);
/* Print the time, along with a string. */
void print_time (const char *msg);
/* Zero if the saved time is from the beginning of GDB execution.
One if from the beginning of an individual command execution. */
bool m_msg_type;
/* Track whether the stat was enabled at the start of the command
so that we can avoid printing anything if it gets turned on by
the current command. */
int m_time_enabled : 1;
int m_space_enabled : 1;
int m_symtab_enabled : 1;
run_time_clock::time_point m_start_cpu_time;
std::chrono::steady_clock::time_point m_start_wall_time;
long m_start_space;
/* Total number of symtabs (over all objfiles). */
int m_start_nr_symtabs;
/* A count of the compunits. */
int m_start_nr_compunit_symtabs;
/* Total number of blocks. */
int m_start_nr_blocks;
};
#endif /* MAINT_H */