pm_stop_pgroup and pm_tstop_pgroup Subroutine

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Purpose

Stops Performance Monitor counting for the group to which a target pthread belongs.

Library

Performance Monitor APIs Library (libpmapi.a)

Syntax

#include <pmapi.h>

int pm_stop_pgroup ( pid,  tid,  ptid)
pid_t pid;
tid_t tid;
ptid_t ptid;

int pm_tstop_pgroup ( pid,  tid,  ptid, *time)
pid_t pid;
tid_t tid;
ptid_t ptid;
timebasestruct_t *time;

Description

The pm_stop_pgroup subroutine stops Performance Monitor counting for a target pthread, the counting group to which it belongs, and all the other pthread members of the same group. Counting stops immediately for all the pthreads in the counting group. The target pthread must be stopped and must be part of a debuggee process, under control of the calling process.

The pm_tstop_pgroup subroutine stops Performance Monitor counting for a target pthread, the counting group to which it belongs, and all the other pthread members of the same group, and returns a timestamp indicating when the counting was stopped.

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.
*time Pointer to a structure containing the timebase value when the counting was stopped. This can be converted to time using the time_base_to_time subroutine.

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.