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swap.page_{in,out} windows impl

This commit is contained in:
Doug MacEachern 2007-08-03 14:54:22 +00:00
parent 2af18adeb3
commit 02ab6d8730
1 changed files with 49 additions and 4 deletions
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53
src/os/win32/win32_sigar.c
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@ -133,8 +133,9 @@ static DWORD perfbuf_grow(sigar_t *sigar)
return sigar->perfbuf_size;
}
static PERF_OBJECT_TYPE *get_perf_object(sigar_t *sigar, char *counter_key,
DWORD *err)
static PERF_OBJECT_TYPE *get_perf_object_inst(sigar_t *sigar,
char *counter_key,
DWORD inst, DWORD *err)
{
DWORD retval, type, bytes;
WCHAR wcounter_key[MAX_PATH+1];
@ -167,7 +168,7 @@ static PERF_OBJECT_TYPE *get_perf_object(sigar_t *sigar, char *counter_key,
* functions are in use by the same process.
* confucius say what the fuck.
*/
if (object->NumInstances == PERF_NO_INSTANCES) {
if (inst && (object->NumInstances == PERF_NO_INSTANCES)) {
int i;
for (i=0; i<block->NumObjectTypes; i++) {
@ -183,6 +184,46 @@ static PERF_OBJECT_TYPE *get_perf_object(sigar_t *sigar, char *counter_key,
}
}
#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)
{
int status;
PERF_OBJECT_TYPE *object =
get_perf_object_inst(sigar, "4" /* Memory */, 0, &status);
PERF_INSTANCE_DEFINITION *inst;
PERF_COUNTER_DEFINITION *counter;
BYTE *data;
DWORD i;
if (!object) {
return status;
}
data = (BYTE *)((BYTE *)object + object->DefinitionLength);
for (i=0, counter = PdhFirstCounter(object);
i<object->NumCounters;
i++, counter = PdhNextCounter(counter))
{
DWORD offset = counter->CounterOffset;
switch (counter->CounterNameTitleIndex) {
case 48: /* "Pages Output/sec" */
swap->page_out = *((DWORD *)(data + offset));
break;
case 822: /* "Pages Input/sec" */
swap->page_in = *((DWORD *)(data + offset));
break;
default:
continue;
}
}
return SIGAR_OK;
}
static void get_sysinfo(sigar_t *sigar)
{
SYSTEM_INFO sysinfo;
@ -522,6 +563,7 @@ SIGAR_DECLARE(int) sigar_mem_get(sigar_t *sigar, sigar_mem_t *mem)
SIGAR_DECLARE(int) sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
{
int status;
DLLMOD_INIT(kernel, TRUE);
if (sigar_GlobalMemoryStatusEx) {
@ -545,7 +587,10 @@ SIGAR_DECLARE(int) sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
swap->used = swap->total - swap->free;
swap->page_in = swap->page_out = -1;
if (get_swap_counters(sigar, swap) != SIGAR_OK) {
swap->page_in = SIGAR_FIELD_NOTIMPL;
swap->page_out = SIGAR_FIELD_NOTIMPL;
}
return SIGAR_OK;
}