Manual Pages  — PMC_INIT

pmc_init – initialize library

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES ERRORS SEE ALSO

Performance Counters Library (libpmc, -lpmc)

#include <pmc.h>

int
pmc_init(void);

Function pmc_init() initializes the PMC library. This function must be called before any of the other functions in the library.

The pmc_init function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

A call to pmc_init() may fail with the following errors:

[ENOENT]
	The hwpmc(4) module was not found in the kernel.
[EPROGMISMATCH]
	The library's version number did not match that expected by hwpmc(4).
[ENXIO]
	PMC hardware on this system is unsupported.