Logging library calls

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#3490

From: isvara2005
Date: Wed, 02 Nov 2005 12:17

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In my program I would like to log (amongst other things) the time of
entry to and exit from pthread_mutex_lock. I currently do this by
modifiying the source code of the program, but I'd prefer to do it more
transparently. I could do this by LD_PRELOADing a shared object which
defines pthread_mutex_create and calls the real one by getting its
address using dlsym with RTLD_NEXT. No problems here.

However, this bit I'm not sure of. I also want the source file and line
number associated with either that call to pthread_mutex_lock, or the
definition of the pthread_mutex_t passed as an argument. Is it possible
to get that information from stabs or DWARF2 debugging symbols once
inside my wrapper function, or must I actually trace the execution of
the program?

Thanks for any info,
Dan.

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From: isvara2005@gmail.com
Newsgroups: comp.unix.programmer,gnu.gcc.help
Subject: Logging library calls
Date: 2 Nov 2005 04:17:33 -0800
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