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moncontrol (3)
  • >> moncontrol (3) ( FreeBSD man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    moncontrol
    
     
    monstartup
    
     - control execution profile
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <sys/types.h>
       #include <sys/gmon.h>
    void moncontrol (int mode);
    void monstartup (u_long lowpc u_long highpc);
     

    DESCRIPTION

    An executable program compiled using the -pg option to cc(1) automatically includes calls to collect statistics for the gprof(1) call-graph execution profiler. In typical operation, profiling begins at program startup and ends when the program calls exit. When the program exits, the profiling data are written to the file progname .gmon where progname is the name of the program, then gprof(1) can be used to examine the results.

    The moncontrol ();
    function selectively controls profiling within a program. When the program starts, profiling begins. To stop the collection of histogram ticks and call counts use moncontrol (0 ;);
    to resume the collection of histogram ticks and call counts use moncontrol (1 .);
    This feature allows the cost of particular operations to be measured. Note that an output file will be produced on program exit regardless of the state of moncontrol (.);

    Programs that are not loaded with -pg may selectively collect profiling statistics by calling monstartup ();
    with the range of addresses to be profiled. The Fa lowpc and Fa highpc arguments specify the address range that is to be sampled; the lowest address sampled is that of Fa lowpc and the highest is just below Fa highpc . Only functions in that range that have been compiled with the -pg option to cc(1) will appear in the call graph part of the output; however, all functions in that address range will have their execution time measured. Profiling begins on return from monstartup (.);
     

    FILES

    progname.gmon
    execution data file

     

    SEE ALSO

    cc(1), gprof(1), profil(2), clocks(7)


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    FILES
    SEE ALSO


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