Re: [dtrace-discuss] concatenate structure members into one variable
Mehul Choube wrote: Hi, I want the guid in a variable. I tried stringof(), strjoin(), copyinstr() but none works L As defined, it's a structure containing longs and binary data, not a string. Can you describe what sort of result you'd like to see? Or perhaps what sort of problem you'd like to solve? The output is: Id: 11E109F8702B323E9CAF5000568000D0 Is that output wrong ... ? -- James Carlson 42.703N 71.076W carls...@workingcode.com ___ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
Re: [dtrace-discuss] concatenate structure members into one variable
Hi, I want to collect the performance information for each myFunc call. The program is multi-threaded and uses multiple queues which can be served by any thread. GUID is the unique handle for each request. I can collect the information and store it based on GUID something like: @[guid] = ... I think the ID is correct. Thanks, Mehul -Original Message- From: James Carlson [mailto:carls...@workingcode.com] Sent: 08 November 2011 18:15 To: Mehul Choube Cc: dtrace-discuss@opensolaris.org Subject: Re: [dtrace-discuss] concatenate structure members into one variable Mehul Choube wrote: Hi, I want the guid in a variable. I tried stringof(), strjoin(), copyinstr() but none works L As defined, it's a structure containing longs and binary data, not a string. Can you describe what sort of result you'd like to see? Or perhaps what sort of problem you'd like to solve? The output is: Id: 11E109F8702B323E9CAF5000568000D0 Is that output wrong ... ? -- James Carlson 42.703N 71.076W carls...@workingcode.com ___ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
Re: [dtrace-discuss] concatenate structure members into one variable
Mehul Choube wrote: Hi, I want to collect the performance information for each myFunc call. The program is multi-threaded and uses multiple queues which can be served by any thread. GUID is the unique handle for each request. I can collect the information and store it based on GUID something like: @[guid] = ... I think the ID is correct. Then just use the data as they are. Dtrace doesn't have functions that translate buffers into D strings. (The trace() mechanism actually logs the raw data; the printing occurs well after the fact when the user-space code gets ahold of the sampled data.) -- James Carlson 42.703N 71.076W carls...@workingcode.com ___ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
Re: [dtrace-discuss] concatenate structure members into one variable
Hi,
Yes but that is my last resort.
Also, I have other values also like:
io::wait-done
/self-waits/
{
self-elapsed = ((timestamp - self-waits) / 100);
@[guid, pid, tid, args[2]-fi_pathname] = sum(this-elapsed);
self-waits = 0;
}
But now it will have to be:
@[self-Data1, self-Data2, self-Data3, self-Data4, pid, tid,
args[2]-fi_pathname] = sum(this-elapsed);
Right?
Thanks,
Mehul
-Original Message-
From: Michael Schuster [mailto:michaelspriv...@gmail.com]
Sent: 08 November 2011 18:40
To: Mehul Choube
Subject: Re: [dtrace-discuss] concatenate structure members into one variable
On Tue, Nov 8, 2011 at 14:02, Mehul Choube mehul_cho...@symantec.com wrote:
Hi,
I want to collect the performance information for each myFunc call. The
program is multi-threaded and uses multiple queues which can be served by any
thread. GUID is the unique handle for each request. I can collect the
information and store it based on GUID something like:
@[guid] = ...
I could be mistaken (it's been a while since I've done any significant
work with DTrace), but can't you use more than one value as value to
hash on, eg @[a,b,c] (check the exact syntax)?
HTH
Michael
I think the ID is correct.
Thanks,
Mehul
-Original Message-
From: James Carlson [mailto:carls...@workingcode.com]
Sent: 08 November 2011 18:15
To: Mehul Choube
Cc: dtrace-discuss@opensolaris.org
Subject: Re: [dtrace-discuss] concatenate structure members into one variable
Mehul Choube wrote:
Hi,
I want the guid in a variable. I tried stringof(), strjoin(),
copyinstr() but none works L
As defined, it's a structure containing longs and binary data, not a
string. Can you describe what sort of result you'd like to see? Or
perhaps what sort of problem you'd like to solve?
The output is:
Id: 11E109F8702B323E9CAF5000568000D0
Is that output wrong ... ?
--
James Carlson 42.703N 71.076W carls...@workingcode.com
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--
Michael Schuster
http://recursiveramblings.wordpress.com/
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Re: [dtrace-discuss] concatenate structure members into one variable
Hi, self-d4 = ((GUID_t *)this-sptr)-Data4[0]; works but self-d4 = ((GUID_t *)this-sptr)-Data4; doesn't with following error: dtrace: failed to compile script nums.d: line 20: operator = may not be applied to operand of type unsigned char [8] Thanks, Mehul -Original Message- From: James Carlson [mailto:carls...@workingcode.com] Sent: 08 November 2011 18:50 To: Mehul Choube Cc: dtrace-discuss@opensolaris.org Subject: Re: [dtrace-discuss] concatenate structure members into one variable Mehul Choube wrote: Hi, I want to collect the performance information for each myFunc call. The program is multi-threaded and uses multiple queues which can be served by any thread. GUID is the unique handle for each request. I can collect the information and store it based on GUID something like: @[guid] = ... I think the ID is correct. Then just use the data as they are. Dtrace doesn't have functions that translate buffers into D strings. (The trace() mechanism actually logs the raw data; the printing occurs well after the fact when the user-space code gets ahold of the sampled data.) -- James Carlson 42.703N 71.076W carls...@workingcode.com ___ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
Re: [dtrace-discuss] concatenate structure members into one variable
On 8 Nov 2011, at 13:20, James Carlson wrote: Mehul Choube wrote: Hi, I want to collect the performance information for each myFunc call. The program is multi-threaded and uses multiple queues which can be served by any thread. GUID is the unique handle for each request. I can collect the information and store it based on GUID something like: @[guid] = ... I think the ID is correct. Then just use the data as they are. Dtrace doesn't have functions that translate buffers into D strings. It is a pity there's no sprintf; was the omission of sprintf from D a deliberate design decision? Chris ___ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
Re: [dtrace-discuss] concatenate structure members into one variable
Mehul Choube wrote: Hi, self-d4 = ((GUID_t *)this-sptr)-Data4[0]; works but self-d4 = ((GUID_t *)this-sptr)-Data4; doesn't with following error: dtrace: failed to compile script nums.d: line 20: operator = may not be applied to operand of type unsigned char [8] Since it's an internal array, you should be able to cast it to unsigned char *. Or, if you really want to keep broken out values instead of a structure (why?), you could individually address each byte. It might be helpful to have something like: #define DATA4(d4) (((uint64_t)(d4)[0]56) \ ((uint64_t)(d4)[1]48) \ ((uint64_t)(d4)[2]40) \ ((uint64_t)(d4)[3]32) \ ((uint64_t)(d4)[4]24) \ ((uint64_t)(d4)[5]16) \ ((uint64_t)(d4)[6]8) \ ((uint64_t)(d4)[7])) so you can treat that last one as an integral quantity. -- James Carlson 42.703N 71.076W carls...@workingcode.com ___ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
Re: [dtrace-discuss] concatenate structure members into one variable
On Tue, Nov 08, 2011 at 03:48:17AM -0800, Mehul Choube wrote:
Hi,
I want the guid in a variable. I tried stringof(), strjoin(), copyinstr() but
none works :(
D script:
===
#!/usr/sbin/dtrace -s
#pragma D option quiet
typedef struct GUID {
unsigned long Data1;
unsigned long Data2;
unsigned long Data3;
unsigned char Data4[8];
}GUID_t;
Have you tried:
pid$1::*myFunc*:entry
{
this-ptr = arg1;
this-sptr = (GUID_t *)copyin(this-ptr, sizeof(GUID_t));
@a[*this-sptr] = count();
^
}
Cheers,
- jonathan
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Re: [dtrace-discuss] concatenate structure members into one variable
Hi,
The output is:
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
0: 00 77 83 ef 87 0a e1 11 a4 7b 00 50 56 80 00 d0 .w...{.PV...
10: 00 00 00 00
1
Thanks,
Mehul
-Original Message-
From: Jonathan Adams [mailto:jonathan.ad...@oracle.com]
Sent: 09 November 2011 00:27
To: Mehul Choube
Cc: dtrace-discuss@opensolaris.org
Subject: Re: [dtrace-discuss] concatenate structure members into one variable
On Tue, Nov 08, 2011 at 03:48:17AM -0800, Mehul Choube wrote:
Hi,
I want the guid in a variable. I tried stringof(), strjoin(), copyinstr() but
none works :(
D script:
===
#!/usr/sbin/dtrace -s
#pragma D option quiet
typedef struct GUID {
unsigned long Data1;
unsigned long Data2;
unsigned long Data3;
unsigned char Data4[8];
}GUID_t;
Have you tried:
pid$1::*myFunc*:entry
{
this-ptr = arg1;
this-sptr = (GUID_t *)copyin(this-ptr, sizeof(GUID_t));
@a[*this-sptr] = count();
^
}
Cheers,
- jonathan
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