pm_reset_data_pgroup Subroutine

Purpose

Resets Performance Monitor data for a target pthread and the counting group to which it belongs.

Library

Performance Monitor APIs Library (libpmapi.a)

Syntax

#include <pmapi.h> int pm_reset_data_pgroup ( pid, tid, ptid) pid_t pid; tid_t tid; ptid_t ptid;

Description

The pm_reset_data_pgroup subroutine resets the current Performance Monitor data for a target pthread and the counting group to which it belongs. The pthread must be stopped and must be part of a debugee process, under control of the calling process. The data is a set (one per hardware counter on the machine used) of 64-bit values. All values are reset to 0. Because the data for all the other pthreads in the group is not affected, the group is marked as inconsistent unless it has only one member.

If the pthread is running in 1:1 mode, only the tid parameter must be specified. If the pthread is running in m:n mode, only the ptid parameter must be specified. If both the ptid and tid parameters are specified, they must be referring to a single pthread with the ptid parameter specified and currently running on a kernel thread with specified tid parameter.

Parameters

Item	Description
pid	Process ID of target pthread. Target process must be a debuggee of the caller process.
tid	Thread ID of target pthread. To ignore this parameter, set it to 0.
ptid	Pthread ID of the target pthread. To ignore this parameter, set it to 0.

Return Values

Item	Description
0	Operation completed successfully.
Positive error code	Refer to the pm_error Subroutine to decode the error code.

Error Codes

Refer to the pm_error Subroutine.

Files

Item	Description
/usr/include/pmapi.h	Defines standard macros, data types, and subroutines.