From 7686d6ee57038e848f75130563fc78c1adebc1a2 Mon Sep 17 00:00:00 2001
From: click <none@none>
Date: Fri, 27 Aug 2010 01:52:05 +0200
Subject: Core/Dependency: Upgrade G3d-library to v8.0-release (patched
 version!) Note: Due to issues with G3D (normally requiring X11 and the
 ZIP-library), the sourcetree version contains a modified version. The applied
 patch is commited to the repository for future reference.

--HG--
branch : trunk
---
 dep/g3dlite/source/AreaMemoryManager.cpp | 87 ++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 dep/g3dlite/source/AreaMemoryManager.cpp

(limited to 'dep/g3dlite/source/AreaMemoryManager.cpp')

diff --git a/dep/g3dlite/source/AreaMemoryManager.cpp b/dep/g3dlite/source/AreaMemoryManager.cpp
new file mode 100644
index 00000000000..00cb33dc91f
--- /dev/null
+++ b/dep/g3dlite/source/AreaMemoryManager.cpp
@@ -0,0 +1,87 @@
+/**
+ @file AreaMemoryManager.cpp
+  
+ @maintainer Morgan McGuire, http://graphics.cs.williams.edu
+
+ @created 2009-01-20
+ @edited  2009-01-20
+
+ Copyright 2000-2009, Morgan McGuire.
+ All rights reserved.
+ */
+
+#include "G3D/AreaMemoryManager.h"
+#include "G3D/System.h"
+
+namespace G3D {
+
+AreaMemoryManager::Buffer::Buffer(size_t size) : m_size(size), m_used(0) {
+    // Allocate space for a lot of buffers.
+    m_first = (uint8*)::malloc(m_size);
+}
+
+
+AreaMemoryManager::Buffer::~Buffer() {
+    ::free(m_first);
+}
+
+
+void* AreaMemoryManager::Buffer::alloc(size_t s) {
+    if (s + m_used > m_size) {
+        return NULL;
+    } else {
+        void* old = m_first + m_used;
+        m_used += s;
+        return old;
+    }
+}
+
+
+bool AreaMemoryManager::isThreadsafe() const {
+    return false;
+}
+
+
+AreaMemoryManager::Ref AreaMemoryManager::create(size_t sizeHint) {
+    return new AreaMemoryManager(sizeHint);
+}
+
+
+AreaMemoryManager::AreaMemoryManager(size_t sizeHint) : m_sizeHint(sizeHint) {
+    debugAssert(sizeHint > 0);
+}
+
+
+AreaMemoryManager::~AreaMemoryManager() {
+    deallocateAll();
+}
+
+
+size_t AreaMemoryManager::bytesAllocated() const {
+    return m_sizeHint * m_bufferArray.size();
+}
+
+
+void* AreaMemoryManager::alloc(size_t s) {
+    void* n = (m_bufferArray.size() > 0) ? m_bufferArray.last()->alloc(s) : NULL;
+    if (n == NULL) {
+        // This buffer is full
+        m_bufferArray.append(new Buffer(max(s, m_sizeHint)));
+        return m_bufferArray.last()->alloc(s);
+    } else {
+        return n;
+    }
+}
+
+
+void AreaMemoryManager::free(void* x) {
+    // Intentionally empty; we block deallocate
+}
+
+
+void AreaMemoryManager::deallocateAll() {
+    m_bufferArray.deleteAll();
+    m_bufferArray.clear();
+}
+
+}
-- 
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