C SYNOPSIS#include <pcp/pmapi.h>
FILE *__pmOpenLog(const char *progname, const char *logname, FILE *oldstream, int *status);
cc ... -lpcp
DESCRIPTION__pmOpenLog reassigns the standard I/O stream oldstream to be associated with the file logname. If it already exists, logname will be removed and recreated if possible (to ensure correct ownership and permissions from the caller to __pmOpenLog).
On return, the function value is the new standard I/O stream. In the event of an error, this will be oldstream unchanged and status will be 0.
is 1, a standard preamble is written to
Log for progname on hostname started date and time
and an atexit(3) handler is installed to write the postscript message to logname
Log finished date and time
when the processes exits.
progname is only used to annotate messages.