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Full Discussion: How to identify maximum stack size?
Top Forums UNIX for Advanced & Expert Users How to identify maximum stack size? Post 302550655 by Corona688 on Friday 26th of August 2011 02:16:13 PM
Old 08-26-2011
Quote:
Originally Posted by rajamohan
So is there is any command or compiler option to find the local variable of nested function calls.
Think about what "nested function call" means. The compiler is not omniscient. Does the compiler know how many times this is going to recurse?
Code:
int recur(int num)
{
      if(num>0) recur(num-1);
      return(0);
}

Feed it 1, it consumes 1 stack frame, feed it 2, it consumes 2 stack frames, and on, and on. There's no static total. There's not even a maximum.

Or how about this code:

Code:
int something(void)
{
        external_library_function();
}

The compiler won't know the run-time stack usage of functions it didn't even compile.

What you're asking about is something you need to consider in your algorithm design, or monitor at runtime with a debugger, not something the compiler can fix for you.
 

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LEARN ABOUT SUSE

extutils::f77

F77(3)							User Contributed Perl Documentation						    F77(3)

NAME

       ExtUtils::F77 - Simple interface to F77 libs

DESCRIPTION

       This module tries to figure out how to link C programs with Fortran subroutines on your system. Basically one must add a list of Fortran
       runtime libraries. The problem is their location and name varies with each OS/compiler combination!

       This module tries to implement a simple 'rule-of-thumb' database for various flavours of UNIX systems.  A simple self-documenting Perl
       database of knowledge/code for figuring out how to link for various combinations of OS and compiler is embedded in the modules Perl code.
       Please help save the world by sending database entries for your system to karl_pgplot@mac.com

       The library list which the module returns can be explicitly overridden by setting the environment variable F77LIBS, e.g.

	 % setenv F77LIBS "-lfoo -lbar"
	 % perl Makefile.PL
	 ...

SYNOPSIS

	 use ExtUtils::F77;		  # Automatic guess
	 use ExtUtils::F77 qw(sunos);	  # Specify system
	 use ExtUtils::F77 qw(linux g77); # Specify system and compiler
	 $fortranlibs = ExtUtils::F77->runtime;

METHODS

       The following methods are provided:

       o   runtime

	   Returns a list of F77 runtime libraries.

	     $fortranlibs = ExtUtils::F77->runtime;

       o   runtimeok

	   Returns TRUE only if runtime libraries have been found successfully.

       o   trail_

	   Returns true if F77 names have trailing underscores.

       o   compiler

	   Returns command to execute the compiler (e.g. 'f77').

       o   cflags

	   Returns compiler flags.

       o   testcompiler

	   Test to see if compiler actually works.

       More methods  will probably be added in the future.

AUTHOR

       Karl Glazebrook (kgb@aaoepp.aao.GOV.AU).

perl v5.12.1							    2007-04-02								    F77(3)
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