FreeBSD manual
download PDF document: pmc_init.3.pdf
PMC_INIT(3) FreeBSD Library Functions Manual PMC_INIT(3)
NAME
pmc_init - initialize library
LIBRARY
Performance Counters Library (libpmc, -lpmc)
SYNOPSIS
#include <pmc.h>
int
pmc_init(void);
DESCRIPTION
Function pmc_init() initializes the PMC library. This function must be
called before any of the other functions in the library.
RETURN VALUES
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.
ERRORS
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.
SEE ALSO
pmc(3), hwpmc(4)
FreeBSD 14.0-RELEASE-p6 November 24, 2007 FreeBSD 14.0-RELEASE-p6