From 655b3b5806bafdd784f6a9c242e26341bd6aeccc Mon Sep 17 00:00:00 2001
From: Andrew Stitcher <astitcher@apache.org>
Date: Fri, 31 Aug 2007 18:20:29 +0000
Subject: * Changes to make C++ client code use the asynchronous network IO *
 Fixed up the test for buffer changes * Removed unused buffer operations

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@571529 13f79535-47bb-0310-9956-ffa450edef68
---
 cpp/src/qpid/framing/Buffer.cpp     | 48 ++++++++++++++++++-------------------
 cpp/src/qpid/framing/Buffer.h       | 12 +++++-----
 cpp/src/qpid/framing/StructHelper.h | 26 ++++++++++++--------
 3 files changed, 46 insertions(+), 40 deletions(-)

(limited to 'cpp/src/qpid/framing')

diff --git a/cpp/src/qpid/framing/Buffer.cpp b/cpp/src/qpid/framing/Buffer.cpp
index 6c6b2661bd..215102807e 100644
--- a/cpp/src/qpid/framing/Buffer.cpp
+++ b/cpp/src/qpid/framing/Buffer.cpp
@@ -22,9 +22,9 @@
 #include "FramingContent.h" 
 #include "FieldTable.h" 
 
-qpid::framing::Buffer::Buffer(uint32_t _size) : size(_size), owner(true), position(0), limit(_size){
-    data = new char[size];
-}
+//qpid::framing::Buffer::Buffer(uint32_t _size) : size(_size), owner(true), position(0), limit(_size){
+//    data = new char[size];
+//}
 
 qpid::framing::Buffer::Buffer(char* _data, uint32_t _size) : size(_size), owner(false), data(_data), position(0), limit(_size){
 }
@@ -33,23 +33,23 @@ qpid::framing::Buffer::~Buffer(){
     if(owner) delete[] data;
 }
 
-void qpid::framing::Buffer::flip(){
-    limit = position;
-    position = 0;
-}
+//void qpid::framing::Buffer::flip(){
+//    limit = position;
+//    position = 0;
+//}
 
-void qpid::framing::Buffer::clear(){
-    limit = size;
-    position = 0;
-}
+//void qpid::framing::Buffer::clear(){
+//    limit = size;
+//    position = 0;
+//}
 
-void qpid::framing::Buffer::compact(){
-    uint32_t p = limit - position;
-    //copy p chars from position to 0
-    memmove(data, data + position, p);
-    limit = size;
-    position = p;
-}
+//void qpid::framing::Buffer::compact(){
+//    uint32_t p = limit - position;
+//    //copy p chars from position to 0
+//    memmove(data, data + position, p);
+//    limit = size;
+//    position = p;
+//}
 
 void qpid::framing::Buffer::record(){
     r_position = position;
@@ -65,13 +65,13 @@ uint32_t qpid::framing::Buffer::available(){
     return limit - position;
 }
 
-char* qpid::framing::Buffer::start(){
-    return data + position;
-}
+//char* qpid::framing::Buffer::start(){
+//    return data + position;
+//}
 
-void qpid::framing::Buffer::move(uint32_t bytes){
-    position += bytes;
-}
+//void qpid::framing::Buffer::move(uint32_t bytes){
+//    position += bytes;
+//}
     
 void qpid::framing::Buffer::putOctet(uint8_t i){
     data[position++] = i;
diff --git a/cpp/src/qpid/framing/Buffer.h b/cpp/src/qpid/framing/Buffer.h
index 04acb65e91..d1eb58f14e 100644
--- a/cpp/src/qpid/framing/Buffer.h
+++ b/cpp/src/qpid/framing/Buffer.h
@@ -41,18 +41,18 @@ class Buffer
 
 public:
 
-    Buffer(uint32_t size);
+    //Buffer(uint32_t size);
     Buffer(char* data, uint32_t size);
     ~Buffer();
 
-    void flip();
-    void clear();
-    void compact();
+    //void flip();
+    //void clear();
+    //void compact();
     void record();
     void restore();
     uint32_t available();
-    char* start();
-    void move(uint32_t bytes);
+    //char* start();
+    //void move(uint32_t bytes);
     
     void putOctet(uint8_t i);
     void putShort(uint16_t i);
diff --git a/cpp/src/qpid/framing/StructHelper.h b/cpp/src/qpid/framing/StructHelper.h
index dc23a30d58..753a593523 100644
--- a/cpp/src/qpid/framing/StructHelper.h
+++ b/cpp/src/qpid/framing/StructHelper.h
@@ -24,6 +24,8 @@
 #include "qpid/Exception.h"
 #include "Buffer.h"
 
+#include <stdlib.h> // For alloca
+
 namespace qpid {
 namespace framing {
 
@@ -33,20 +35,24 @@ public:
 
     template <class T> void encode(const T t, std::string& data) {
         uint32_t size = t.size() + 2/*type*/;
-        Buffer buffer(size);
-        buffer.putShort(T::TYPE);
-        t.encode(buffer);
-        buffer.flip();
-        buffer.getRawData(data, size);        
+        char* bytes = static_cast<char*>(::alloca(size));
+        Buffer wbuffer(bytes, size);
+        wbuffer.putShort(T::TYPE);
+        t.encode(wbuffer);
+        
+        Buffer rbuffer(bytes, size);
+        rbuffer.getRawData(data, size);        
     }
 
     template <class T> void decode(T t, std::string& data) {
-        Buffer buffer(data.length());
-        buffer.putRawData(data);        
-        buffer.flip();
-        uint16_t type = buffer.getShort();
+        char* bytes = static_cast<char*>(::alloca(data.length()));
+        Buffer wbuffer(bytes, data.length());
+        wbuffer.putRawData(data);        
+
+        Buffer rbuffer(bytes, data.length());
+        uint16_t type = rbuffer.getShort();
         if (type == T::TYPE) {
-            t.decode(buffer);
+            t.decode(rbuffer);
         } else {
             throw Exception("Type code does not match");
         }
-- 
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