.TH LIBPFM 3  "November, 2003" "" "Linux Programmer's Manual"
.SH NAME
pfm_initialize \- initialize performance monitoring library
.SH SYNOPSIS
.nf
.B #include <perfmon/pfmlib.h>
.sp
.BI "int pfm_initialize(void);"
.sp
.SH DESCRIPTION
This is the first function that a program using the library
\fBmust\fR call otherwise the library will not function at all. 
This function probes the host PMU and initialize the internal
state of the library.  In the case of a multi-threaded application,
this function needs to be called only once, most likely by the initial
thread.

.SH RETURN
The function returns whether or not it was successful, i.e., the
host PMU has been correctly identified and is supported. A return
value of \fBPFMLIB_SUCCESS\fR indicates success, otherwise the value is 
an error code.
.SH ERRORS
.TP
.B PFMLIB_ERR_NOTSUPP
the host 
PMU is not supported.
.SH AUTHOR
Stephane Eranian <eranian@hpl.hp.com>
.PP