};
-function onMessage(handle, nread, buf, rinfo) {
+function onMessage(handle, slab, start, len, rinfo) {
var self = handle.socket;
-
- if (nread == -1) {
- self.emit('error', errnoException(errno, 'recvmsg'));
- }
- else {
- rinfo.size = buf.length; // compatibility
- self.emit('message', buf, rinfo);
- }
+ if (!slab) return self.emit('error', errnoException(errno, 'recvmsg'));
+ rinfo.size = len; // compatibility
+ self.emit('message', slab.slice(start, start + len), rinfo);
}
#include "node.h"
#include "node_buffer.h"
-
+#include "slab_allocator.h"
#include "req_wrap.h"
#include "handle_wrap.h"
#include <stdlib.h>
+#define SLAB_SIZE (1024 * 1024)
+
// Temporary hack: libuv should provide uv_inet_pton and uv_inet_ntop.
// Clean this up in tcp_wrap.cc too.
#if defined(__MINGW32__) || defined(_MSC_VER)
return scope.Close(Integer::New(-1)); \
}
-// TODO share with tcp_wrap.cc
-Persistent<String> address_symbol;
-Persistent<String> port_symbol;
-Persistent<String> buffer_sym;
+typedef ReqWrap<uv_udp_send_t> SendWrap;
void AddressToJS(Handle<Object> info,
const sockaddr* addr,
int addrlen);
-typedef ReqWrap<uv_udp_send_t> SendWrap;
+
+static Persistent<String> address_symbol;
+static Persistent<String> port_symbol;
+static Persistent<String> buffer_sym;
+static SlabAllocator slab_allocator(SLAB_SIZE);
class UDPWrap: public HandleWrap {
uv_buf_t UDPWrap::OnAlloc(uv_handle_t* handle, size_t suggested_size) {
- return uv_buf_init(new char[suggested_size], suggested_size);
+ UDPWrap* wrap = static_cast<UDPWrap*>(handle->data);
+ char* buf = slab_allocator.Allocate(wrap->object_, suggested_size);
+ return uv_buf_init(buf, suggested_size);
}
unsigned flags) {
HandleScope scope;
- if (nread == 0) {
- free(buf.base);
+ UDPWrap* wrap = reinterpret_cast<UDPWrap*>(handle->data);
+ Local<Object> slab = slab_allocator.Shrink(wrap->object_,
+ buf.base,
+ nread < 0 ? 0 : nread);
+ if (nread == 0) return;
+
+ if (nread < 0) {
+ Local<Value> argv[] = { Local<Object>::New(wrap->object_) };
+ SetErrno(uv_last_error(uv_default_loop()));
+ MakeCallback(wrap->object_, "onmessage", ARRAY_SIZE(argv), argv);
return;
}
- UDPWrap* wrap = reinterpret_cast<UDPWrap*>(handle->data);
+ Local<Object> rinfo = Object::New();
+ AddressToJS(rinfo, addr, sizeof(*addr));
- Local<Value> argv[4] = {
+ Local<Value> argv[] = {
Local<Object>::New(wrap->object_),
- Integer::New(nread),
- Local<Value>::New(Null()),
- Local<Value>::New(Null())
+ slab,
+ Integer::NewFromUnsigned(buf.base - Buffer::Data(slab)),
+ Integer::NewFromUnsigned(nread),
+ rinfo
};
-
- if (nread == -1) {
- SetErrno(uv_last_error(uv_default_loop()));
- }
- else {
- Local<Object> rinfo = Object::New();
- AddressToJS(rinfo, addr, sizeof *addr);
- argv[2] = Local<Object>::New(
- Buffer::New(buf.base, nread, NULL, NULL)->handle_);
- argv[3] = rinfo;
- }
- free(buf.base);
-
MakeCallback(wrap->object_, "onmessage", ARRAY_SIZE(argv), argv);
}