DosQuerySysState

Prototype

APIRET APIENTRY DosQuerySysState ( ULONG func, ULONG arg1, ULONG pid, ULONG _res_, 
                                   PVOID buf, ULONG bufsz ) ;

Linkage Definition

IMPORTS Dos32QuerySysState = DOSCALLS.368 

Parameters

ULONG func

Bit flag indicating which data is being requested.

ULONG arg1

Reserved. Set to zero always.

ULONG pid

Process ID. See notes.

ULONG _res_

Reserved.

ULONG buf

Address of buffer for results. See DOSQSS.H for the layout.

ULONG bufsz:Size of result buffer.

Comments

This function performs almost exactly the same function as the older DosQProcStat, except that the 64K limit on buffer size has been removed, all addresses are in 0:32 format, and some more information has been added.

The func parameter is a bit array, with the following meanings:

00000001 Process Data
00000002 Process Semaphores (16-bit only?)
00000004 Module Data
00000008 File Data (see notes)
00000010 Named Shared Memory

Notes:

1. The pid parameter allows you to request information for a single process (if non-zero), or for all processes on the system. NOTE: Selection of a single process caused system hangs prior to Warp 3.0 Fixpack 18.
2. The arg1 parameter must be set to zero, or it may cause a system crash. IBM has reported this problem fixed in APAR PJ21195.
3. File data is only supported from Warp 3.0 Fixpack 18 onwards.

Examples

• DOSQ - Query Processes
• LSOF - List Open Files