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* utils.c: #include "timeval-utils.h". 

(cmd_stats): Rename start_time to start_cpu_time.
	New member start_wall_time.
	(report_command_stats): Report wall time.
	(make_command_stats_cleanup): Record start wall time.

	doc/
	* gdb.texinfo (Maintenance Commands): Update docs of "maint time".
This commit is contained in:
Doug Evans 2011-11-04 16:45:13 +00:00
parent a1d705ee1b
commit 0a1c4d10f1
4 changed files with 36 additions and 12 deletions
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8
gdb/ChangeLog
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@ -1,3 +1,11 @@
2011-11-04 Doug Evans <dje@google.com>
* utils.c: #include "timeval-utils.h".
(cmd_stats): Rename start_time to start_cpu_time.
New member start_wall_time.
(report_command_stats): Report wall time.
(make_command_stats_cleanup): Record start wall time.
2011-11-04 Tom Tromey <tromey@redhat.com>
* cp-namespace.c (cp_lookup_symbol_imports): Reindent.

4
gdb/doc/ChangeLog
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@ -1,3 +1,7 @@
2011-11-04 Doug Evans <dje@google.com>
* gdb.texinfo (Maintenance Commands): Update docs of "maint time".
2011-11-03 Tom Tromey <tromey@redhat.com>
* gdb.texinfo (Stopping): Add menu entry.

15
gdb/doc/gdb.texinfo
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@ -32991,13 +32991,16 @@ switch (@pxref{Mode Options}).
@kindex maint time
@cindex time of command execution
@item maint time
Control whether to display the execution time for each command. If
set to a nonzero value, @value{GDBN} will display how much time it
Control whether to display the execution time of @value{GDBN} for each command.
If set to a nonzero value, @value{GDBN} will display how much time it
took to execute each command, following the command's own output.
The time is not printed for the commands that run the target, since
there's no mechanism currently to compute how much time was spend
by @value{GDBN} and how much time was spend by the program been debugged.
it's not possibly currently
Both CPU time and wallclock time are printed.
Printing both is useful when trying to determine whether the cost is
CPU or, e.g., disk/network, latency.
Note that the CPU time printed is for @value{GDBN} only, it does not include
the execution time of the inferior because there's no mechanism currently
to compute how much time was spent by @value{GDBN} and how much time was
spent by the program been debugged.
This can also be requested by invoking @value{GDBN} with the
@option{--statistics} command-line switch (@pxref{Mode Options}).

21
gdb/utils.c
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@ -45,6 +45,7 @@
#endif
#include <signal.h>
#include "timeval-utils.h"
#include "gdbcmd.h"
#include "serial.h"
#include "bfd.h"
@ -691,7 +692,8 @@ static int display_space;
struct cmd_stats
{
int msg_type;
long start_time;
long start_cpu_time;
struct timeval start_wall_time;
long start_space;
};
@ -723,12 +725,18 @@ report_command_stats (void *arg)
if (display_time)
{
long cmd_time = get_run_time () - start_stats->start_time;
long cmd_time = get_run_time () - start_stats->start_cpu_time;
struct timeval now_wall_time, delta_wall_time;
gettimeofday (&now_wall_time, NULL);
timeval_sub (&delta_wall_time,
&now_wall_time, &start_stats->start_wall_time);
printf_unfiltered (msg_type == 0
? _("Startup time: %ld.%06ld\n")
: _("Command execution time: %ld.%06ld\n"),
cmd_time / 1000000, cmd_time % 1000000);
? _("Startup time: %ld.%06ld (cpu), %ld.%06ld (wall)\n")
: _("Command execution time: %ld.%06ld (cpu), %ld.%06ld (wall)\n"),
cmd_time / 1000000, cmd_time % 1000000,
delta_wall_time.tv_sec, delta_wall_time.tv_usec);
}
if (display_space)
@ -764,7 +772,8 @@ make_command_stats_cleanup (int msg_type)
#endif
new_stat->msg_type = msg_type;
new_stat->start_time = get_run_time ();
new_stat->start_cpu_time = get_run_time ();
gettimeofday (&new_stat->start_wall_time, NULL);
return make_cleanup_dtor (report_command_stats, new_stat, xfree);
}