similar to: Using DTrace in 32-bit to handle 64-bit parameters [72631230]

I''ve been trying to get access to a userland string that''s behind a second level pointer using DTrace, but I can''t seem to get it to work. I started with the example on the Team DTrace Tips and Tricks slides: trace(copyinstr(*(uintptr_t *)copyin(arg0, curpsinfo->pr_dmodel == PR_MODEL_ILP32 ? 4 : 8))); And when I couldn''t get it to work, I started

I would like to know how to get access to errno when using pid provider to probe calls to libc functions like fopen(). The built-in errno appears to be only for system calls. What I''d like to be able to do is investigate where in an application I''m encountering EMFILE and what the stack looks like at the time. This message posted from opensolaris.org

I''m interested in monitoring the amount of stack used by a multi-threaded program. I assume ''stackdepth'' built-in would be useful...but not sure. Been through demo''s, ToolKit, and internals..but it''s just not clicking for me yet. Not sure how to measure start/end of stack size dynamically...Anyone know how to break this down? This message posted from

everyone, Just out of curiosity, I did a dtrace -n ''syscall:::entry { @num[execname, probefunc] = count(); }'' and looked at the entries produced by ''rm''. I see everything that rm did, *except* the unlinkat - which is unfortunate because I want to trace which processes have deleted which files. So - does dtrace contain unlinkat as a probe for a system call?

How would I determine the address of the ulwp_t structure for the current thread of a process from a 32-bit i386 executable looking at a 32-bit executable? (This is in support of a fix for 6593259: "libdtrace should prefer pid probes to breakpoints".) For example, if I compile the following code 64-bit snippet, I can get that address from 32-bit or 64-bit executables:

Hi I have a Dtrace script ( attached ) which examines memory usage, using fbt:genunix:anon_resvmem:entry & return On my T2000 it totals the 65k pages being reserved by my application, printing out the total in bytes. Seems to work well, tested with a small app that malloced < 65 K, malloced 200M and mmapeed a 16M file and it appeared to get things correct. Could I just get a second pair

Hi all, I am trying to write a D script which would print ustack() for every program in the system receiving SIGSEGV. All the stacks printed in trap()/sigtoproc() context do not have meaningful symbols. The following solves the problem to some degree but I''d much rather have a self-contained D script. dtrace -w -n ''fbt:genunix:sigtoproc:entry/arg2 == 11/ {

[1] Predicates in one-liners I would like to list the probe modules in my executable and then dynamically create a dscript to trace execution of those modules alone (by excluding the 3rd party and system libraries). I tried the below script without success. The conditional given in the predicate is not taking effect. Why is this so ? $ dtrace -ln ''pid$target:::

Hello DTracers, The CPU caps project (http://www.opensolaris.org/os/project/rm/rctls/cpu-caps/) introduces kernel "wait queues" where threads may be placed to enforce caps. I would like to make this visible through DTrace and to add two new probes to the sched provider with the following semantics: cpucaps-sleep Probe that fires immediately before the current thread is placed on a

hi fnds, i want to print the filenames on which the stat system call is acting when a stat system call is invoked. can anyone can help me this regard. Thanks jeevan

I want to go a lot deeper with my tracing of MySQL and to do so I want to look into MySQL Thread Descriptors (class THD). Inside is a great bulk of information utilized by a great many of the core functions within MySQL... I really want to get in there. So far I''ve had no luck though. It''s a C++ class, and I''m afraid that I''m approaching it like a C struct,

Hi Dean, I haven't looked very closely at XRay so far, but I'm wondering if making CTF (common trace format, e.g. see http://diamon.org/ctf/) the default format for XRay traces would be useful? It seems it'd be nice to be able to reuse some of the tools that already exist for CTF, such as a graphical viewer (http://tracecompass.org/) or a converter library

I have a script where I can freely reference struct nameidata*, struct vnode*, etc. on Snow Leopard. How does DTrace know about these data types? I understand things like #pragma D depends_on library darwin.d where darwin.d has typedefs. I can''t find definitions of nameidata and vnode in any D scripts, though. How does it work? Thanks, Joel --- firefox for android!

Hello everybody! How do people generate the Compact Type Format (CTF) section? Do you have a special parser or employ gcc debug information? Is there any open utility to do this job? Best regards, Yaroslav

Hi llvm-dev, Recently, we've committed the beginnings of the llvm-xray [0] tool which allows for conveniently working with both XRay-instrumented libraries as well as XRay trace/log files. In the course of the review for the conversion tool [1] which turns a binary/raw XRay log file into YAML for human consumption purposes, a question arose as to how we intend to allow users to develop tools

This is a belated heads up to let you know that I have merged DTrace to the releng7 branch in the nick of time before the feature freeze for 7.1. Those astute mailing list readers will note that the commit message appears to have gone missing. Well, either the dog ate it or subversion decided that it was for certain eyes only (and not yours, or mine). I have added a note to src/UPDATING

Hi I have this problem: <script> var param1 = ''field3''; </script> <script> var param2 = ''field3''; </script> <script> var param3 = ''field3''; </script> <%= submit_tag ''Next'', {:onsubmit => ''return validate_options(param1,param2,param3);''} %> function

Hi there, I would like to know if it is possible to modify a text file with a R function. In fact I would like to know if a function "Search & Replace" exists. My problem is to create config files from a Base file in which I have to modify values of parameters. My Base File: #... #... Param1= V1_1 #... Param2 = V2_1 Param3 = V3_1 #... What I would like for each created file

Hello, I'm using the "sem" package to do a confirmatory factor analysis on data collected with a questionnaire. In the model, there is a unique factor G and 23 items. I would like to calculate the standardized residual variance of the observed variables. "Sem" only gives the residual variance with the "summary" function, or the standardized loadings with the

Whilst trying out some D to get an insight into what is the most common reason for a given function to return, I have bumped into an error I don''t understand. The first take on what I was trying to do was: # dtrace -n ''fbt:ip:ip_input:return{@home[arg0] = count();}'' and all was well. The next step was: # dtrace -n