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* fhandler_proc.cc (format_proc_meminfo): On NT, try to figure out

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real swap file usage by requesting SystemPagefileInformation.  Use
	GlobalMemoryStatus as fallback.
	* ntdll.h (_SYSTEM_INFORMATION_CLASS): Add SystemPagefileInformation.
	(struct _SYSTEM_PAGEFILE_INFORMATION): Define.
This commit is contained in:
Corinna Vinschen
2004-03-18 12:28:47 +00:00
parent f600e87caf
commit 891d1990ab
3 changed files with 54 additions and 2 deletions
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38
winsup/cygwin/fhandler_proc.cc
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@@ -390,8 +390,42 @@ format_proc_meminfo (char *destbuf, size_t maxsize)
GlobalMemoryStatus (&memory_status);
mem_total = memory_status.dwTotalPhys;
mem_free = memory_status.dwAvailPhys;
swap_total = memory_status.dwTotalPageFile - mem_total;
swap_free = memory_status.dwAvailPageFile - mem_total;
PSYSTEM_PAGEFILE_INFORMATION spi = NULL;
ULONG size = 512;
NTSTATUS ret;
spi = (PSYSTEM_PAGEFILE_INFORMATION) malloc (size);
if (spi)
{
ret = NtQuerySystemInformation (SystemPagefileInformation, (PVOID) spi,
size, &size);
if (ret == STATUS_INFO_LENGTH_MISMATCH)
{
free (spi);
spi = (PSYSTEM_PAGEFILE_INFORMATION) malloc (size);
if (spi)
ret = NtQuerySystemInformation (SystemPagefileInformation,
(PVOID) spi, size, &size);
}
}
if (!spi || ret || (!ret && GetLastError () == ERROR_PROC_NOT_FOUND))
{
swap_total = memory_status.dwTotalPageFile - mem_total;
swap_free = memory_status.dwAvailPageFile - mem_total;
}
else
{
PSYSTEM_PAGEFILE_INFORMATION spp = spi;
do
{
swap_total += spp->CurrentSize * getpagesize ();
swap_free += (spp->CurrentSize - spp->TotalUsed) * getpagesize ();
}
while (spp->NextEntryOffset
&& (spp = (PSYSTEM_PAGEFILE_INFORMATION)
((char *) spp + spp->NextEntryOffset)));
}
if (spi)
free (spi);
return __small_sprintf (destbuf, " total: used: free:\n"
"Mem: %10lu %10lu %10lu\n"
"Swap: %10lu %10lu %10lu\n"