Current File : //proc/self/root/usr/src/node-v0.10.4/src/node_counters.cc
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "node_counters.h"
#include "uv.h"
#include <string.h>
namespace node {
using namespace v8;
static uint64_t counter_gc_start_time;
static uint64_t counter_gc_end_time;
#define SLURP_OBJECT(obj, member, valp) \
if (!(obj)->IsObject()) { \
return (ThrowException(Exception::Error(String::New("expected " \
"object for " #obj " to contain object member " #member)))); \
} \
*valp = Local<Object>::Cast(obj->Get(String::New(#member)));
Handle<Value> COUNTER_NET_SERVER_CONNECTION(const Arguments& args) {
NODE_COUNT_SERVER_CONN_OPEN();
return Undefined();
}
Handle<Value> COUNTER_NET_SERVER_CONNECTION_CLOSE(const Arguments& args) {
NODE_COUNT_SERVER_CONN_CLOSE();
return Undefined();
}
Handle<Value> COUNTER_HTTP_SERVER_REQUEST(const Arguments& args) {
NODE_COUNT_HTTP_SERVER_REQUEST();
return Undefined();
}
Handle<Value> COUNTER_HTTP_SERVER_RESPONSE(const Arguments& args) {
NODE_COUNT_HTTP_SERVER_RESPONSE();
return Undefined();
}
Handle<Value> COUNTER_HTTP_CLIENT_REQUEST(const Arguments& args) {
NODE_COUNT_HTTP_CLIENT_REQUEST();
return Undefined();
}
Handle<Value> COUNTER_HTTP_CLIENT_RESPONSE(const Arguments& args) {
NODE_COUNT_HTTP_CLIENT_RESPONSE();
return Undefined();
}
static void counter_gc_start(GCType type, GCCallbackFlags flags) {
counter_gc_start_time = NODE_COUNT_GET_GC_RAWTIME();
return;
}
static void counter_gc_done(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;
}
}
return;
}
#define NODE_PROBE(name) #name, name
void InitPerfCounters(Handle<Object> target) {
HandleScope scope;
static struct {
const char* name;
Handle<Value> (*func)(const Arguments&);
Persistent<FunctionTemplate> templ;
} tab[] = {
{ 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) }
};
for (int i = 0; i < ARRAY_SIZE(tab); i++) {
tab[i].templ = Persistent<FunctionTemplate>::New(
FunctionTemplate::New(tab[i].func));
target->Set(String::NewSymbol(tab[i].name), tab[i].templ->GetFunction());
}
// 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;
v8::V8::AddGCPrologueCallback(counter_gc_start);
v8::V8::AddGCEpilogueCallback(counter_gc_done);
}
void TermPerfCounters(Handle<Object> target) {
// Only Windows performance counters supported
// To enable other OS, use conditional compilation here
TermPerfCountersWin32();
}
}
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