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(SIGAR-188) implement mem actual free/used on Windows 

This rev uses "System Cache Resident Bytes" aka file cache instead of PERFORMANCE_INFORMATION.SystemCache
This commit is contained in:
Doug MacEachern 2010-04-28 11:09:32 -07:00
parent bb122cc1e4
commit 1c9b45eab1
1 changed files with 13 additions and 4 deletions
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17
src/os/win32/win32_sigar.c
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@ -234,7 +234,7 @@ static PERF_OBJECT_TYPE *get_perf_object_inst(sigar_t *sigar,
#define get_perf_object(sigar, counter_key, err) \
get_perf_object_inst(sigar, counter_key, 1, err)
static int get_swap_counters(sigar_t *sigar, sigar_swap_t *swap)
static int get_mem_counters(sigar_t *sigar, sigar_swap_t *swap, sigar_mem_t *mem)
{
int status;
PERF_OBJECT_TYPE *object =
@ -258,10 +258,17 @@ static int get_swap_counters(sigar_t *sigar, sigar_swap_t *swap)
switch (counter->CounterNameTitleIndex) {
case 48: /* "Pages Output/sec" */
swap->page_out = *((DWORD *)(data + offset));
if (swap) swap->page_out = *((DWORD *)(data + offset));
break;
case 76: /* "System Cache Resident Bytes" aka file cache */
if (mem) {
sigar_uint64_t kern = *((DWORD *)(data + offset));
mem->actual_free = mem->free + kern;
mem->actual_used = mem->used - kern;
return SIGAR_OK;
}
case 822: /* "Pages Input/sec" */
swap->page_in = *((DWORD *)(data + offset));
if (swap) swap->page_in = *((DWORD *)(data + offset));
break;
default:
continue;
@ -657,6 +664,8 @@ SIGAR_DECLARE(int) sigar_mem_get(sigar_t *sigar, sigar_mem_t *mem)
mem->actual_free = mem->free;
mem->actual_used = mem->used;
/* set actual_{free,used} */
get_mem_counters(sigar, NULL, mem);
sigar_mem_calc_ram(sigar, mem);
@ -689,7 +698,7 @@ SIGAR_DECLARE(int) sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
swap->used = swap->total - swap->free;
if (get_swap_counters(sigar, swap) != SIGAR_OK) {
if (get_mem_counters(sigar, swap, NULL) != SIGAR_OK) {
swap->page_in = SIGAR_FIELD_NOTIMPL;
swap->page_out = SIGAR_FIELD_NOTIMPL;
}