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#include <sys/gmon.h> int moncontrol (int mode);
This function allows to control collection of profiling information
during the program run. Profiling begins when a program linked with the
`-pg' option starts, or when
monstartup is called
(see section monstartup). To stop the collection of histogram ticks and
function call counts, call
moncontrol with a zero argument
mode; this stops the timer used to sample the program counter
EIP) values and disables the code which counts how many times
each function compiled with `-pg' was called. To resume collection
of profile data, call
moncontrol with a non-zero argument.
Note that the profiling output is always written to the file `gmon.out' at program exit time, regardless of whether profiling is on or off.
moncontrol returns the previous state of profiling: zero if it
was turned off, non-zero if it was on.
extern void my_func(); extern void my_func_end(); /* Profile only one function. */ monstartup((unsigned long)my_func, (unsigned long)my_func_end); ... /* Stop profiling. */ moncontrol(0); ... /* Resume profiling. */ moncontrol(1);
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