__PMOPENLOG(3) - man page online | library functions
Create a log file for diagnostics and debug output.
PMOPENLOG(3) Library Functions Manual PMOPENLOG(3)
NAME__pmOpenLog - create a log file for diagnostics and debug output
C SYNOPSIS#include <pcp/pmapi.h> #include <pcp/impl.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 en‐ sure 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. For success, status is 1, a standard preamble is written to logname 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.
Performance Co-Pilot PCP PMOPENLOG(3)
SEE ALSOatexit(3) and freopen(3).
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|refer to||atexit(3) | fopen(3)|