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With Tomer. 

Optimizing the performance counter queries on win32.

splitted performance counters cache to caches per counter_key.
This commit is contained in:
BoazHarel 2015-07-20 11:44:50 +03:00
parent 341e288e98
commit 48ba690dd4
2 changed files with 77 additions and 20 deletions
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2
src/os/win32/sigar_os.h
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@ -583,7 +583,7 @@ struct sigar_t {
int using_wide;
long pagesize;
HKEY handle;
buffer_t* performanceBuffer;
buffer_t** performanceBuffers;
buffer_t* processesBuffer;
sigar_wtsapi_t wtsapi;
sigar_iphlpapi_t iphlpapi;

93
src/os/win32/win32_sigar.c
View File

@ -39,6 +39,15 @@
#define PERF_TITLE_CPU_KEY "238"
#define PERF_TITLE_DISK_KEY "236"
typedef enum
{
PERF_COUNTER_SYS
, PERF_COUNTER_MEM
, PERF_COUNTER_PROC
, PERF_COUNTER_CPU
, PERF_COUNTER_DISK
} perf_counter_keys_t;
#define PERF_TITLE_CPU_USER 142
#define PERF_TITLE_CPU_IDLE 1746
#define PERF_TITLE_CPU_SYS 144
@ -111,11 +120,11 @@ typedef enum {
(USING_WIDE() ? \
RegQueryValueExW(sigar->handle, \
wcounter_key, NULL, &type, \
sigar->performanceBuffer->buffer, \
performanceBuffer->buffer, \
&bytes) : \
RegQueryValueExA(sigar->handle, \
counter_key, NULL, &type, \
sigar->performanceBuffer->buffer, \
performanceBuffer->buffer, \
&bytes))
#define PERF_VAL(ix) \
@ -185,6 +194,33 @@ static char *get_counter_name(char *key)
}
}
static int get_performance_buffer_by_counter_key(sigar_t* sigar, char* counterKey, buffer_t** performanceBuffer)
{
int i;
if (strEQ(counterKey, PERF_TITLE_SYS_KEY)) {
i = PERF_COUNTER_SYS;
}
else if (strEQ(counterKey, PERF_TITLE_MEM_KEY)) {
i = PERF_COUNTER_MEM;
}
else if (strEQ(counterKey, PERF_TITLE_PROC_KEY)) {
i = PERF_COUNTER_PROC;
}
else if (strEQ(counterKey, PERF_TITLE_CPU_KEY)) {
i = PERF_COUNTER_CPU;
}
else if (strEQ(counterKey, PERF_TITLE_DISK_KEY)) {
i = PERF_COUNTER_DISK;
} else {
return -1;
}
*performanceBuffer = sigar->performanceBuffers[i];
return SIGAR_OK;
}
static PERF_OBJECT_TYPE *get_perf_object_inst(sigar_t *sigar,
char *counter_key,
DWORD inst, DWORD *err)
@ -193,18 +229,28 @@ static PERF_OBJECT_TYPE *get_perf_object_inst(sigar_t *sigar,
WCHAR wcounter_key[MAX_PATH+1];
PERF_DATA_BLOCK *block;
PERF_OBJECT_TYPE *object;
time_t timenow = time(NULL);
buffer_t* performanceBuffer;
*err = get_performance_buffer_by_counter_key(sigar, counter_key, &performanceBuffer);
*err = SIGAR_OK;
if (*err != SIGAR_OK) {
return NULL;
}
if (USING_WIDE()) {
if ((timenow - performanceBuffer->create_time) < SIGAR_BUFFER_EXPIRE) {
return PdhFirstObject(((PERF_DATA_BLOCK *)performanceBuffer->buffer));
}
if (USING_WIDE()) {
SIGAR_A2W(counter_key, wcounter_key, sizeof(wcounter_key));
}
bytes = buffer_init(sigar->performanceBuffer);
bytes = buffer_init(performanceBuffer);
while ((retval = MyRegQueryValue()) != ERROR_SUCCESS) {
if (retval == ERROR_MORE_DATA) {
bytes = buffer_grow(sigar->performanceBuffer);
bytes = buffer_grow(performanceBuffer);
}
else {
*err = retval;
@ -212,7 +258,8 @@ static PERF_OBJECT_TYPE *get_perf_object_inst(sigar_t *sigar,
}
}
block = (PERF_DATA_BLOCK *)sigar->performanceBuffer->buffer;
block = (PERF_DATA_BLOCK *)performanceBuffer->buffer;
if (block->NumObjectTypes == 0) {
counter_key = get_counter_name(counter_key);
sigar_strerror_printf(sigar, "No %s counters defined (disabled?)",
@ -221,7 +268,9 @@ static PERF_OBJECT_TYPE *get_perf_object_inst(sigar_t *sigar,
return NULL;
}
sigar->performanceBuffer->create_time = time(NULL);
performanceBuffer->buffer = block;
performanceBuffer->create_time = time(NULL);
object = PdhFirstObject(block);
/*
@ -545,13 +594,18 @@ int sigar_os_open(sigar_t **sigar_ptr)
sigar->machine = ""; /* local machine */
sigar->using_wide = 0; /*XXX*/
sigar->performanceBuffer = (buffer_t*) malloc(sizeof(buffer_t));
sigar->processesBuffer = (buffer_t*) malloc(sizeof(buffer_t));
sigar->performanceBuffer->buffer = NULL;
sigar->processesBuffer->buffer = NULL;
buffer_init(sigar->performanceBuffer);
buffer_init(sigar->processesBuffer);
sigar->performanceBuffers = (buffer_t**)malloc(sizeof(buffer_t *) * 5);
for (i = 0; i < 5; i++)
{
sigar->performanceBuffers[i] = (buffer_t*)malloc(sizeof(buffer_t));
sigar->performanceBuffers[i]->buffer = NULL;
buffer_init(sigar->performanceBuffers[i]);
}
version.dwOSVersionInfoSize = sizeof(version);
GetVersionEx(&version);
@ -624,7 +678,7 @@ void buffer_free(buffer_t* buffer)
int sigar_os_close(sigar_t *sigar)
{
int retval;
int retval, i;
DLLMOD_FREE(wtsapi);
DLLMOD_FREE(iphlpapi);
@ -636,7 +690,14 @@ int sigar_os_close(sigar_t *sigar)
DLLMOD_FREE(mpr);
buffer_free(sigar->processesBuffer);
buffer_free(sigar->performanceBuffer);
if (sigar->performanceBuffers) {
for (i = 0; i < 5; i++) {
buffer_free(sigar->performanceBuffers[i]);
}
free(sigar->performanceBuffers);
}
retval = RegCloseKey(sigar->handle);
@ -1420,11 +1481,7 @@ static int get_proc_info(sigar_t *sigar, sigar_pid_t pid)
memset(&perf_offsets, 0, sizeof(perf_offsets));
if ((timenow - sigar->performanceBuffer->create_time) < SIGAR_BUFFER_EXPIRE) {
object = PdhFirstObject(((PERF_DATA_BLOCK *)sigar->performanceBuffer->buffer));
} else {
object = get_process_object(sigar, &err);
}
object = get_process_object(sigar, &err);
if (object == NULL) {
return err;