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* fhandler_proc.cc (format_proc_meminfo): Rewrite to use sysinfo().

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Support RAM and swap space larger than 4GB.
Remove output elements not found with modern Linux kernels.
(format_proc_swaps): Support paging files larger than 4GB.
This commit is contained in:
Yaakov Selkowitz 2011-05-12 11:13:02 +00:00
parent 2fade21617
commit 205b82080b
2 changed files with 31 additions and 64 deletions
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7
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,10 @@
2011-05-12 Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
* fhandler_proc.cc (format_proc_meminfo): Rewrite to use sysinfo().
Support RAM and swap space larger than 4GB.
Remove output elements not found with modern Linux kernels.
(format_proc_swaps): Support paging files larger than 4GB.
2011-05-11 Corinna Vinschen <corinna@vinschen.de>
* autoload.cc: Remove useless comment.

88
winsup/cygwin/fhandler_proc.cc
View File

@ -24,6 +24,7 @@ details. */
#include "tls_pbuf.h"
#include <sys/utsname.h>
#include <sys/param.h>
#include <sys/sysinfo.h>
#include "ntdll.h"
#include <winioctl.h>
#include <wchar.h>
@ -402,68 +403,27 @@ format_proc_loadavg (void *, char *&destbuf)
static _off64_t
format_proc_meminfo (void *, char *&destbuf)
{
unsigned long mem_total = 0UL, mem_free = 0UL, swap_total = 0UL,
swap_free = 0UL;
MEMORYSTATUS memory_status;
GlobalMemoryStatus (&memory_status);
mem_total = memory_status.dwTotalPhys;
mem_free = memory_status.dwAvailPhys;
PSYSTEM_PAGEFILE_INFORMATION spi = NULL;
ULONG size = 512;
NTSTATUS ret = STATUS_SUCCESS;
unsigned long long mem_total, mem_free, swap_total, swap_free;
struct sysinfo info;
sysinfo (&info);
mem_total = (unsigned long long) info.totalram * info.mem_unit;
mem_free = (unsigned long long) info.freeram * info.mem_unit;
swap_total = (unsigned long long) info.totalswap * info.mem_unit;
swap_free = (unsigned long long) info.freeswap * info.mem_unit;
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 * getsystempagesize ();
swap_free += (spp->CurrentSize - spp->TotalUsed)
* getsystempagesize ();
}
while (spp->NextEntryOffset
&& (spp = (PSYSTEM_PAGEFILE_INFORMATION)
((char *) spp + spp->NextEntryOffset)));
}
if (spi)
free (spi);
destbuf = (char *) crealloc_abort (destbuf, 512);
return __small_sprintf (destbuf, " total: used: free:\n"
"Mem: %10lu %10lu %10lu\n"
"Swap: %10lu %10lu %10lu\n"
"MemTotal: %10lu kB\n"
"MemFree: %10lu kB\n"
"MemShared: 0 kB\n"
"HighTotal: 0 kB\n"
"HighFree: 0 kB\n"
"LowTotal: %10lu kB\n"
"LowFree: %10lu kB\n"
"SwapTotal: %10lu kB\n"
"SwapFree: %10lu kB\n",
mem_total, mem_total - mem_free, mem_free,
swap_total, swap_total - swap_free, swap_free,
mem_total >> 10, mem_free >> 10,
mem_total >> 10, mem_free >> 10,
swap_total >> 10, swap_free >> 10);
return sprintf (destbuf, "MemTotal: %10llu kB\n"
"MemFree: %10llu kB\n"
"HighTotal: 0 kB\n"
"HighFree: 0 kB\n"
"LowTotal: %10llu kB\n"
"LowFree: %10llu kB\n"
"SwapTotal: %10llu kB\n"
"SwapFree: %10llu kB\n",
mem_total >> 10, mem_free >> 10,
mem_total >> 10, mem_free >> 10,
swap_total >> 10, swap_free >> 10);
}
static _off64_t
@ -1292,7 +1252,7 @@ format_proc_filesystems (void *, char *&destbuf)
static _off64_t
format_proc_swaps (void *, char *&destbuf)
{
unsigned long total = 0UL, used = 0UL;
unsigned long long total = 0ULL, used = 0ULL;
char *filename = NULL;
ssize_t filename_len;
PSYSTEM_PAGEFILE_INFORMATION spi = NULL;
@ -1326,14 +1286,14 @@ format_proc_swaps (void *, char *&destbuf)
PSYSTEM_PAGEFILE_INFORMATION spp = spi;
do
{
total = spp->CurrentSize * getsystempagesize ();
used = spp->TotalUsed * getsystempagesize ();
total = (unsigned long long) spp->CurrentSize * getsystempagesize ();
used = (unsigned long long) spp->TotalUsed * getsystempagesize ();
filename_len = cygwin_conv_path (CCP_WIN_W_TO_POSIX, spp->FileName.Buffer, filename, 0);
filename = (char *) malloc (filename_len);
cygwin_conv_path (CCP_WIN_W_TO_POSIX, spp->FileName.Buffer, filename, filename_len);
bufptr += sprintf (bufptr, "%-40s%-16s%-8ld%-8ld%-8d\n",
bufptr += sprintf (bufptr, "%-40s%-16s%-8llu%-8llu%-8d\n",
filename, "file", total >> 10, used >> 10, 0);
}
while (spp->NextEntryOffset