C API to get Total SWAP installed on a HPUX machine

From: Manish Baronia (manishbaronia_at_hotmail.com)
Date: 08/25/03 

Date: Mon, 25 Aug 2003 18:47:30 +0530

Hi All,
    I want to find out total swap installed on a HP Unix machine (In
C/C++). For this I got following code somewhere:
struct pst_swapinfo swapinfo;
unsigned long total_swap, free_swap =0;
int MAX_SWAP_AREAS = 1024;
for (int i = 0 ; i < MAX_SWAP_AREAS ; i++)
  {
      pstat_getswap(&swapinfo, sizeof(swapinfo), (size_t)1, i);
      if (swapinfo.pss_idx == (unsigned)i)
      {
          swapinfo.pss_nfpgs *= 4; // nfpgs is in 512 Byte Blocks....
          if (swapinfo.pss_nblksenabled == 0) // == 0 ??
              swapinfo.pss_nblksenabled = swapinfo.pss_nfpgs;
          total_swap += (((unsigned long)swapinfo.pss_nblksenabled) *
1024);
          free_swap += (((unsigned long)swapinfo.pss_nfpgs ) *
1024);
      }
  }
Can someone tell me if this is the correct way to find swap on HP UX
machines. I have tried it on 3 HP machines. It runs fine on one and
fails on other two.
TIA,
Manish

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