| MONCONTROL(3) | Library Functions Manual | MONCONTROL(3) | 
moncontrol, monstartup —
moncontrol(int
  mode);
monstartup(u_long
    *lowpc, u_long
    *highpc);
-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 gmon.out, then
  gprof(1) can be used to examine
  the results.
moncontrol() 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. lowpc and highpc
    specify the address range that is to be sampled; the lowest address sampled
    is that of lowpc and the highest is just below
    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().
PROFDIR| June 4, 1993 | NetBSD 9.3 |