Sorry to post this in multiple forums. I posted it earlier in a Sun forum before noticing an admonision to post to this forum.
That said ...
When running the following code I seem to lose the setting to self->t,
self->t2, self->v, and self->v2. Looking at the output, they all seem to get
set properly at BEGIN, but the first time we fire a probe they are all reset to
zero.
If I use global variables instead of thread locals, everything seems fine (see
dummy2.d and output2, below).
I know I'm probably doing something dumb, but I'll be damned if I can see what.
dummy.cpp
==========
#include "myprobes.h"
#include <sys/sdt.h>
#include <iostream>
using namespace std;
void func1(int level)
{
//cout << "func 1 called with " << level << endl;
DUMMY_DO_FUNC1(level);
if(level--)
func1(level);
return;
}
int main(void)
{
DUMMY_CALL_FUNC1_1(10);
//cout << "calling func 1 [1st] with " << 10 << endl;
func1(10);
DUMMY_CALL_FUNC1_2(10);
//cout << "calling func 1 [2nd] with " << 10 << endl;
func1(10);
char c;
cin >> c;
return 0;
}
==========
myprobes.d
==========
provider dummy
{
probe do_func1(int);
probe call_func1_1(int);
probe call_func1_2(int);
};
#pragma D attributes Evolving/Evolving/Common provider dummy provider
#pragma D attributes Evolving/Evolving/Common provider dummy module
#pragma D attributes Evolving/Evolving/Common provider dummy function
#pragma D attributes Evolving/Evolving/Common provider dummy name
#pragma D attributes Evolving/Evolving/Common provider dummy args
==========
build process
==========
[20090526-09:36][jsi...@njdev-x86-app1:~/tmp]$ rm *.o *.h
[20090526-09:36][jsi...@njdev-x86-app1:~/tmp]$ make
dtrace -h -s myprobes.d
CC -V -O0 -c dummy.cpp
CC: Sun Ceres C++ 5.10 SunOS_i386 2009/03/06
ccfe: Sun Ceres C++ 5.10 SunOS_i386 2009/03/06
ir2hf: Sun Ceres Compiler Common 12.1 SunOS_i386 2009/03/06
ube: Sun Ceres Compiler Common 12.1 SunOS_i386 2009/03/06
as: Sun Ceres Compiler Common 12.1 SunOS_i386 2009/03/06
dtrace -G -32 -s myprobes.d dummy.o
CC -V -O0 -o dummy dummy.o myprobes.o
CC: Sun Ceres C++ 5.10 SunOS_i386 2009/03/06
/opt/SSX0903/prod/bin/c++filt: Sun Ceres C++ 5.10 SunOS_i386 2009/03/06
ld: Software Generation Utilities - Solaris Link Editors: 5.10-1.486
[20090526-09:36][jsi...@njdev-x86-app1:~/tmp]$
==========
dummy.d
==========
BEGIN
{
self->vt=vtimestamp;
self->vt2=vtimestamp;
self->t=timestamp;
self->t2=timestamp;
printf("%d, %d, %d, %d, %d, %d\n", timestamp, self->vt, self->vt2,
self->t, self->t2, tid);
}
dummy$target::main:
{
this->vt=vtimestamp-self->vt;
this->vt2=vtimestamp-self->vt2;
this->t=timestamp-self->t;
this->t2=timestamp-self->t2;
printf("%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d\n",
timestamp,
vtimestamp,
self->t,
self->t2,
self->vt,
self->vt2,
this->t,
this->t2,
this->vt,
this->vt2,
tid);
printf( "%4d.%09d (%4d.%09d), %4d.%09d (%4d.%09d), %s %d\n",
this->vt/1000000000,
this->vt%1000000000,
this->vt2/1000000000,
this->vt2%1000000000,
this->t/1000000000,
this->t%1000000000,
this->t2/1000000000,
this->t2%1000000000,
probefunc,
arg0);
self->vt2=vtimestamp;
self->t2=timestamp;
}
==========
output
==========
[20090526-09:36][jsi...@njdev-x86-app1:~/tmp]$ dtrace -s dummy.d -q -c ./dummy
2748299975446053, 1, 1, 2748299975446053, 2748299975446053, 1
2748299977369523, 1108655, 0, 0, 0, 0, 2748299977369523, 2748299977369523,
1108655, 1108655, 1
0.001108655 ( 0.001108655), 2748299.977369523 (2748299.977369523), main 10
2748299977395941, 1110294, 0, 2748299977369523, 0, 1108655, 2748299977395941,
26418, 1110294, 1639, 1
0.001110294 ( 0.000001639), 2748299.977395941 ( 0.000026418), main 10
dummy2.d
==========
BEGIN
{
vt=vtimestamp;
vt2=vtimestamp;
t=timestamp;
t2=timestamp;
printf("%d, %d, %d, %d, %d, %d\n", timestamp, vt, vt2, t, t2, tid);
}
dummy$target::main:
{
this->vt=vtimestamp-vt;
this->vt2=vtimestamp-vt2;
this->t=timestamp-t;
this->t2=timestamp-t2;
printf("%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d\n",
timestamp,
vtimestamp,
t,
t2,
vt,
vt2,
this->t,
this->t2,
this->vt,
this->vt2,
tid);
printf( "%4d.%09d (%4d.%09d), %4d.%09d (%4d.%09d), %s %d\n",
this->vt/1000000000,
this->vt%1000000000,
this->vt2/1000000000,
this->vt2%1000000000,
this->t/1000000000,
this->t%1000000000,
this->t2/1000000000,
this->t2%1000000000,
probefunc,
arg0);
vt2=vtimestamp;
t2=timestamp;
}
==========
output2
==========
2748450558395934, 1, 1, 2748450558395934, 2748450558395934, 1
2748450560332692, 1162784, 2748450558395934, 2748450558395934, 1, 1, 1936758,
1936758, 1162783, 1162783, 1
0.001162783 ( 0.001162783), 0.001936758 ( 0.001936758), main 10
2748450560355846, 1164842, 2748450558395934, 2748450560332692, 1, 1162784,
1959912, 23154, 1164841, 2058, 1
0.001164841 ( 0.000002058), 0.001959912 ( 0.000023154), main 10
==========
I am sooooo confused.
Jim Siler
--
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dummy.cpp
Description: Binary data
dummy.d
Description: Binary data
myprobes.d
Description: Binary data
Makefile
Description: Binary data
output
Description: Binary data
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