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Make some vgdb interface to callgrind_control internal

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The vgdb "status" monitor command is still available, but
used for pretty printing of status information now (acutally,
just some place holder for real information up to now: just
number of running threads). The internal interface used by
callgrind_control to provide stack traces and event counts
is using "status internal", and is not documented, as the
format is not for human consumption.

This also adds some documentation.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12014
This commit is contained in:
Josef Weidendorfer 2011-09-06 19:08:35 +00:00
parent 7617408d27
commit 5c36030d9f
3 changed files with 38 additions and 6 deletions
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11
callgrind/callgrind_control.in
View File

@ -192,6 +192,7 @@ $requestDump = 0;
$switchInstr = 0;
$headerPrinted = 0;
$dumpHint = "";
$verbose = 0;
%spids = ();
foreach $arg (@ARGV) {
@ -205,6 +206,10 @@ foreach $arg (@ARGV) {
elsif ($arg =~ /^--version$/) {
printVersion;
}
elsif ($arg =~ /^-v$/) {
$verbose++;
next;
}
elsif ($arg =~ /^(-s|--stat)$/) {
$printStatus = 1;
next;
@ -324,7 +329,7 @@ if ($requestZero) { $vgdbCommand = "zero"; }
if ($requestKill) { $vgdbCommand = "v.kill"; }
if ($switchInstr) { $vgdbCommand = "instrumentation ".$switchInstrMode; }
if ($printStatus || $printBacktrace || $requestEvents) {
$vgdbCommand = "status";
$vgdbCommand = "status internal";
$waitForAnswer = 1;
}
@ -336,7 +341,11 @@ foreach $pid (@pids) {
print "\n";
next;
}
if ($verbose>0) {
print " [requesting '$vgdbCommand']\n";
} else {
print "\n";
}
open RESULT, "vgdb --pid=$pid $vgdbCommand|";
@tids = ();

9
callgrind/docs/cl-manual.xml
View File

@ -1093,11 +1093,16 @@ gdbserver (see <xref linkend="manual-core-adv.gdbserver-commandhandling"/>).
</listitem>
<listitem>
<para>It would be nice to have some more callgrind monitor
commands such as e.g. toggle collect and start instrumentation.
<para><varname>instrumentation [on|off]</varname> requests to set
(if parameter on/off is given) or get the current instrumentation state.
</para>
</listitem>
<listitem>
<para><varname>status</varname> requests to print out some status
information.</para>
</listitem>
</itemizedlist>
</sect1>

20
callgrind/main.c
View File

@ -1450,7 +1450,7 @@ static void print_monitor_help ( void )
VG_(gdb_printf) (" zero\n");
VG_(gdb_printf) (" zero counters\n");
VG_(gdb_printf) (" status\n");
VG_(gdb_printf) (" print status (statistics and shadow stacks)\n");
VG_(gdb_printf) (" print status\n");
VG_(gdb_printf) (" instrumentation [on|off]\n");
VG_(gdb_printf) (" get/set (if on/off given) instrumentation state\n");
VG_(gdb_printf) ("\n");
@ -1483,10 +1483,28 @@ static Bool handle_gdb_monitor_command (ThreadId tid, Char *req)
CLG_(zero_all_cost)(False);
return True;
}
case 3: { /* status */
Char* arg = VG_(strtok_r) (0, " ", &ssaveptr);
if (arg && (VG_(strcmp)(arg, "internal") == 0)) {
/* internal interface to callgrind_control */
dump_state_togdb();
return True;
}
if (!CLG_(instrument_state)) {
VG_(gdb_printf)("No status available as instrumentation is switched off\n");
} else {
// Status information to be improved ...
thread_info** th = CLG_(get_threads)();
Int t, tcount = 0;
for(t=1;t<VG_N_THREADS;t++)
if (th[t]) tcount++;
VG_(gdb_printf)("%d thread(s) running.\n", tcount);
}
return True;
}
case 4: { /* instrumentation */
Char* arg = VG_(strtok_r) (0, " ", &ssaveptr);
if (!arg) {