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Full Discussion: How to Find who is calling me?
Top Forums Programming How to Find who is calling me? Post 62057 by Neo on Thursday 10th of February 2005 11:16:17 PM
Old 02-11-2005
Can you use strace ?

Code:
STRACE(1)                                               STRACE(1)

NAME
       strace - trace system calls and signals

SYNOPSIS
       strace [ -dffhiqrtttTvxx ] [ -acolumn ] [ -eexpr ] ...  [ -ofile ] [ -ppid
       ] ...  [ -sstrsize ] [ -uusername ] [ command [ arg ...  ] ]

       strace -c [ -eexpr ] ...  [ -Ooverhead ] [ -Ssortby ] [ command [ arg  ...
       ] ]

DESCRIPTION
       In the simplest case strace runs the specified command until it exits.  It
       intercepts and records the system calls which are called by a process  and
       the  signals  which  are  received  by a process.  The name of each system
       call, its arguments and its return value are printed on standard error  or
       to the file specified with the -o option.

       strace  is a useful diagnostic, instructional, and debugging tool.  System
       adminstrators, diagnosticians and trouble-shooters will find it invaluable
       for  solving  problems  with  programs for which the source is not readily
       available since they do not need to be recompiled in order to trace  them.
       Students,  hackers  and the overly-curious will find that a great deal can
       be learned about a system and its system calls by  tracing  even  ordinary
       programs.   And  programmers will find that since system calls and signals
       are events that happen at the user/kernel interface, a  close  examination
       of  this  boundary  is  very useful for bug isolation, sanity checking and
       attempting to capture race conditions.

... more available on man page

Or, did I misunderstand your question?
 

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LEARN ABOUT CENTOS

papi_set_multiplex

PAPI_set_multiplex(3)						       PAPI						     PAPI_set_multiplex(3)

NAME

       PAPI_set_multiplex -

       Convert a standard event set to a multiplexed event set.

SYNOPSIS

Detailed Description
       C Interface:
	   #include <papi.h>
	    int PAPI_set_multiplex( int  EventSet );

       Parameters:
	   EventSet an integer handle for a PAPI event set as created by PAPI_create_eventset

       Return values:
	   PAPI_OK
	   PAPI_EINVAL -- One or more of the arguments is invalid, or the EventSet is already multiplexed.
	   PAPI_ENOCMP -- The EventSet specified is not yet bound to a component.
	   PAPI_ENOEVST -- The EventSet specified does not exist.
	   PAPI_EISRUN -- The EventSet is currently counting events.
	   PAPI_ENOMEM -- Insufficient memory to complete the operation.

       PAPI_set_multiplex converts a standard PAPI event set created by a call to PAPI_create_eventset into an event set capable of handling
       multiplexed events. This must be done after calling PAPI_multiplex_init, and either PAPI_add_event or PAPI_assign_eventset_component, but
       prior to calling PAPI_start().

       Events can be added to an event set either before or after converting it into a multiplexed set, but the conversion must be done prior to
       using it as a multiplexed set.

       Note:
	   Multiplexing can't be enabled until PAPI knows which component is targeted. Due to the late binding nature of PAPI event sets, this
	   only happens after adding an event to an event set or explicitly binding the component with a call to PAPI_assign_eventset_component.

       Example:

	   *   int EventSet = PAPI_NULL;
	   *   int ret;
	   *
	   *   // Create an empty EventSet
	   *   ret = PAPI_create_eventset(&EventSet);
	   *   if (ret != PAPI_OK) handle_error(ret);
	   *
	   *   // Bind it to the CPU component
	   *   ret = PAPI_assign_eventset_component(EventSet, 0);
	   *   if (ret != PAPI_OK) handle_error(ret);
	   *
	   *   // Check  current multiplex status
	   *   ret = PAPI_get_multiplex(EventSet);
	   *   if (ret == TRUE) printf("This event set is ready for multiplexing.")
	   *   if (ret == FALSE) printf("This event set is not enabled for multiplexing.")
	   *   if (ret < 0) handle_error(ret);
	   *
	   *   // Turn on multiplexing
	   *   ret = PAPI_set_multiplex(EventSet);
	   *   if ((ret == PAPI_EINVAL) && (PAPI_get_multiplex(EventSet) == TRUE))
	   *	 printf("This event set already has multiplexing enabled0);
	   *   else if (ret != PAPI_OK) handle_error(ret);
	   *

       See Also:
	   PAPI_multiplex_init

	   PAPI_get_multiplex

	   PAPI_set_opt

	   PAPI_create_eventset

Author
       Generated automatically by Doxygen for PAPI from the source code.

Version 5.2.0.0 						  Tue Jun 17 2014					     PAPI_set_multiplex(3)
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