DosGetProcessorStatus

DosGetProcessorStatus returns the ONLINE or OFFLINE status of each processor of an SMP system. The processor status may be set using DosSetProcessorStatus. ONLINE status imples the processor is available for running work. OFFLINE status implies the processor is not available for running work.

Syntax

APIRET DosGetProcessorStatus (ULONG procid, PULONG status)

Parameters

procid (ULONG) input

Processor ID numbered 1 through n, where there are n processors in total

status (PULONG) output

Status is defined as follows

PROC_OFFLINE 0x00000000 Processor is offline

PROC_ONLINE 0x00000001 Processor is online

Return Code

ulrc (APIRET) returns

DosGetProcessorStatus returns one of the following values

• 0 NO_ERROR
• 87 ERROR_INVALID_PARAMETER

Example Code

int main(int argc, char *argv[], char *envp[]){
   APIRET rc=0;
   ULONG procid;
   ULONG status;
   int i;

   if (argc == 1) {
      for (procid=1; rc==0 ;++procid) {
         rc = DosGetProcessorStatus(procid,  status);
         if (rc==0) {
            if (status == PROC_OFFLINE) printf("Processor %u offline\n", procid);
            else printf("Processor %u online\n", procid);
         } /* endif */
      } /* endfor */

   } else for (i=1; i argc ; ++i) {
      procid = atol(argv[i]);
      rc = DosGetProcessorStatus(procid,  status);
      if (rc) printf("DosGetProcesorStatus returned %u\n",rc);
      else {
         if (status == PROC_OFFLINE) printf("Processor %u offline\n", procid);
         else printf("Processor %u online\n", procid);
      } /* endif */
   } /* endfor */

   return rc;
}

Related Functions

• DosGetProcessorCount
• DosGetProcessorIdleTime
• DosSetProcessorStatus