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pfm_self_start
Langue: en
Version: 182236 (CentOS - 06/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
pfm_self_start, pfm_self_stop - start and stop monitoring for a self-monitoring processSYNOPSIS
#include <perfmon/pfmlib.h> int pfm_self_start(int fd); int pfm_self_stop(int fd);
DESCRIPTION
These two functions can only be used by self-monitoring processes. They have no effect on system wide sessions.The pfm_self_start function activates monitoring. This function is equivalent to calling perfmonctl() with the PFM_START command and may end up calling it. On Linux/ia64 it is implemented as a lightweight call to set the psr.up bit.
The pfm_self_stop function deactivates monitoring This function is equivalent to calling perfmonctl() with the PFM_STOP command and may end up calling it.On Linux/ia64 it is implemented as a lightweight call to clear the psr.up bit.
RETURN
The function returns 0 if successful, otherwise -1 and the error code is set in errno.ERRORS
0 is always returned on Linux/ia64.AUTHOR
Stephane Eranian <eranian@hpl.hp.com>Contenus ©2006-2024 Benjamin Poulain
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