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#include "node_counters.h"
#include "uv.h"
#include "env-inl.h"
#include <string.h>
namespace node {
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::GCCallbackFlags;
using v8::GCType;
using v8::HandleScope;
using v8::Isolate;
using v8::Local;
using v8::Object;
using v8::String;
using v8::Value;
static uint64_t counter_gc_start_time;
static uint64_t counter_gc_end_time;
void COUNTER_NET_SERVER_CONNECTION(const FunctionCallbackInfo<Value>&) {
NODE_COUNT_SERVER_CONN_OPEN();
}
void COUNTER_NET_SERVER_CONNECTION_CLOSE(const FunctionCallbackInfo<Value>&) {
NODE_COUNT_SERVER_CONN_CLOSE();
}
void COUNTER_HTTP_SERVER_REQUEST(const FunctionCallbackInfo<Value>&) {
NODE_COUNT_HTTP_SERVER_REQUEST();
}
void COUNTER_HTTP_SERVER_RESPONSE(const FunctionCallbackInfo<Value>&) {
NODE_COUNT_HTTP_SERVER_RESPONSE();
}
void COUNTER_HTTP_CLIENT_REQUEST(const FunctionCallbackInfo<Value>&) {
NODE_COUNT_HTTP_CLIENT_REQUEST();
}
void COUNTER_HTTP_CLIENT_RESPONSE(const FunctionCallbackInfo<Value>&) {
NODE_COUNT_HTTP_CLIENT_RESPONSE();
}
static void counter_gc_start(Isolate* isolate,
GCType type,
GCCallbackFlags flags) {
counter_gc_start_time = NODE_COUNT_GET_GC_RAWTIME();
}
static void counter_gc_done(Isolate* isolate,
GCType type,
GCCallbackFlags flags) {
uint64_t endgc = NODE_COUNT_GET_GC_RAWTIME();
if (endgc != 0) {
uint64_t totalperiod = endgc - counter_gc_end_time;
uint64_t gcperiod = endgc - counter_gc_start_time;
if (totalperiod > 0) {
unsigned int percent = static_cast<unsigned int>(
(gcperiod * 100) / totalperiod);
NODE_COUNT_GC_PERCENTTIME(percent);
counter_gc_end_time = endgc;
}
}
}
void InitPerfCounters(Environment* env, Local<Object> target) {
HandleScope scope(env->isolate());
static struct {
const char* name;
void (*func)(const FunctionCallbackInfo<Value>&);
} tab[] = {
#define NODE_PROBE(name) #name, name
{ NODE_PROBE(COUNTER_NET_SERVER_CONNECTION) },
{ NODE_PROBE(COUNTER_NET_SERVER_CONNECTION_CLOSE) },
{ NODE_PROBE(COUNTER_HTTP_SERVER_REQUEST) },
{ NODE_PROBE(COUNTER_HTTP_SERVER_RESPONSE) },
{ NODE_PROBE(COUNTER_HTTP_CLIENT_REQUEST) },
{ NODE_PROBE(COUNTER_HTTP_CLIENT_RESPONSE) }
#undef NODE_PROBE
};
for (size_t i = 0; i < arraysize(tab); i++) {
Local<String> key = OneByteString(env->isolate(), tab[i].name);
Local<Value> val = env->NewFunctionTemplate(tab[i].func)->GetFunction();
target->Set(key, val);
}
// Only Windows performance counters supported
// To enable other OS, use conditional compilation here
InitPerfCountersWin32();
// init times for GC percent calculation and hook callbacks
counter_gc_start_time = NODE_COUNT_GET_GC_RAWTIME();
counter_gc_end_time = counter_gc_start_time;
env->isolate()->AddGCPrologueCallback(counter_gc_start);
env->isolate()->AddGCEpilogueCallback(counter_gc_done);
}
void TermPerfCounters(Local<Object> target) {
// Only Windows performance counters supported
// To enable other OS, use conditional compilation here
TermPerfCountersWin32();
}
} // namespace node
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