Improve performance.

.gitignore

@@ -1,3 +1,4 @@
 raw
 build
 .lock-wscript
+node_modules

examples/low-level.js

@@ -1,28 +1,31 @@
-var Curl = require('../lib/Curl')
+var Curl = require('..').Curl
 
 var p = console.log;
 var url = process.argv[2];
 
 var curl = new Curl();
 
 if (!url)
-url = 'www.yahoo.com';
+	url = 'www.yahoo.com';
 
 curl.setopt('URL', url);
 curl.setopt('CONNECTTIMEOUT', 2);
 
 // on 'data' must be returns chunk.length, or means interrupt the transfer
 curl.on('data', function(chunk) {
-  return chunk.length;
+	p("receive " + chunk.length)
+	return chunk.length;
 });
 
 curl.on('error', function(e) {
-  curl.close();
+	p("error: " + e.message)
+	curl.close();
 });
 
 
 curl.on('end', function() {
-  curl.close();
+	p('done.')
+	curl.close();
 });
 
 curl.perform();

lib/Curl.toffee

@@ -62,14 +62,24 @@ Curl::perform = ->
   Curl.process()
   @
 
+m = 0
+p = console.log
 Curl.process = ->
   if Curl.in_process
     return
   do once = ->
-    num = Curl.process_()
-    if num > 0
+    n = Curl.process_()
+    if n > 0
       Curl.in_process = true
-      setTimeout once, 80
+      if n > 8192 && m < 10
+        ++m
+        process.nextTick once
+      else
+        m = 0
+        w = (8192 - n) * 80 / 8192
+        if w < 0
+          w = 0
+        setTimeout once, w
     else
       Curl.in_process = false
 

lib/CurlBuilder.toffee

@@ -16,6 +16,7 @@ class CurlBuilder
     curl = ->
       curl.perform.apply curl, arguments
 
+    curl.Curl = Curl
     curl.perform = (args...) ->
       if @running
         throw new Error 'the cURL session is busy, use curl.create to create another cURL Session'

src/node-curl.h

@@ -24,6 +24,7 @@ class NodeCurl
 	static bool    is_ref;
 	static std::map< CURL*, NodeCurl* > curls;
 	static int     count;
+	static int     transfered;
 
 	CURL  * curl;
 	v8::Persistent<v8::Object> handle;
@@ -107,6 +108,7 @@ class NodeCurl
 	// curl write function mapping
 	static size_t write_function(char *ptr, size_t size, size_t nmemb, void *userdata)
 	{
+		transfered += size * nmemb;
 		NodeCurl *nodecurl = (NodeCurl*)userdata;
 		return nodecurl->on_write(ptr, size * nmemb);
 	}
@@ -294,6 +296,7 @@ class NodeCurl
 	// int process()
 	static v8::Handle<v8::Value> process(const v8::Arguments & args)
 	{
+		transfered = 0;
 		if (running_handles > 0)
 		{
 			CURLMcode code;
@@ -333,7 +336,7 @@ class NodeCurl
 				}
 			}
 		}
-		return v8::Integer::New(running_handles);
+		return v8::Integer::New(transfered + (int)(running_handles > 0));
 	}
 
 	// perform()
@@ -452,5 +455,6 @@ int     NodeCurl::running_handles = 0;
 bool    NodeCurl::is_ref = false;
 std::map< CURL*, NodeCurl* > NodeCurl::curls;
 int     NodeCurl::count = 0;
+int     NodeCurl::transfered = 0;
 
 #endif