From bc393d8fd195f2d4400b6aeb42fa40b92d6b4b68 Mon Sep 17 00:00:00 2001
From: Egor Yusov <egor.yusov@gmail.com>
Date: Thu, 21 Jun 2018 21:33:43 -0700
Subject: Improved memory allocation for shader variables and resource cache in
 Vk backend

---
 Common/interface/FixedBlockMemoryAllocator.h | 18 +++++++++---------
 Common/src/FixedBlockMemoryAllocator.cpp     | 23 ++++++++---------------
 2 files changed, 17 insertions(+), 24 deletions(-)

(limited to 'Common')

diff --git a/Common/interface/FixedBlockMemoryAllocator.h b/Common/interface/FixedBlockMemoryAllocator.h
index c092c203..2b9a5f3e 100644
--- a/Common/interface/FixedBlockMemoryAllocator.h
+++ b/Common/interface/FixedBlockMemoryAllocator.h
@@ -52,7 +52,7 @@ namespace Diligent
 class FixedBlockMemoryAllocator : public IMemoryAllocator
 {
 public:
-    FixedBlockMemoryAllocator(IMemoryAllocator &RawMemoryAllocator, size_t BlockSize, Uint32 NumBlocksInPage);
+    FixedBlockMemoryAllocator(IMemoryAllocator& RawMemoryAllocator, size_t BlockSize, Uint32 NumBlocksInPage);
     ~FixedBlockMemoryAllocator();
 
     /// Allocates block of memory
@@ -62,10 +62,10 @@ public:
     virtual void Free(void *Ptr)override final;
     
 private:
-    FixedBlockMemoryAllocator(const FixedBlockMemoryAllocator&) = delete;
-    FixedBlockMemoryAllocator(FixedBlockMemoryAllocator&&) = delete;
+    FixedBlockMemoryAllocator             (const FixedBlockMemoryAllocator&) = delete;
+    FixedBlockMemoryAllocator             (FixedBlockMemoryAllocator&&)      = delete;
     FixedBlockMemoryAllocator& operator = (const FixedBlockMemoryAllocator&) = delete;
-    FixedBlockMemoryAllocator& operator = (FixedBlockMemoryAllocator&&) = delete;
+    FixedBlockMemoryAllocator& operator = (FixedBlockMemoryAllocator&&)      = delete;
 
     void CreateNewPage();
 
@@ -74,15 +74,15 @@ private:
     class MemoryPage
     { 
     public:
-        static constexpr Uint8 NewPageMemPattern = 0xAA;
-        static constexpr Uint8 AllocatedBlockMemPattern = 0xAB;
+        static constexpr Uint8 NewPageMemPattern          = 0xAA;
+        static constexpr Uint8 AllocatedBlockMemPattern   = 0xAB;
         static constexpr Uint8 DeallocatedBlockMemPattern = 0xDE;
         static constexpr Uint8 InitializedBlockMemPattern = 0xCF;
 
-        MemoryPage(FixedBlockMemoryAllocator &OwnerAllocator):
-            m_NumFreeBlocks(OwnerAllocator.m_NumBlocksInPage),
+        MemoryPage(FixedBlockMemoryAllocator& OwnerAllocator):
+            m_NumFreeBlocks       (OwnerAllocator.m_NumBlocksInPage),
             m_NumInitializedBlocks(0),
-            m_pOwnerAllocator(&OwnerAllocator)
+            m_pOwnerAllocator     (&OwnerAllocator)
         {
             auto PageSize = OwnerAllocator.m_BlockSize * OwnerAllocator.m_NumBlocksInPage;
             m_pPageStart = reinterpret_cast<Uint8*>(
diff --git a/Common/src/FixedBlockMemoryAllocator.cpp b/Common/src/FixedBlockMemoryAllocator.cpp
index 261336ea..37a21e36 100644
--- a/Common/src/FixedBlockMemoryAllocator.cpp
+++ b/Common/src/FixedBlockMemoryAllocator.cpp
@@ -26,25 +26,22 @@
 
 namespace Diligent
 {
-    FixedBlockMemoryAllocator::FixedBlockMemoryAllocator(IMemoryAllocator &RawMemoryAllocator, size_t BlockSize, Uint32 NumBlocksInPage) :
-        m_PagePool(STD_ALLOCATOR_RAW_MEM(MemoryPage, RawMemoryAllocator, "Allocator for vector<MemoryPage>")),
-        m_AvailablePages(STD_ALLOCATOR_RAW_MEM(size_t, RawMemoryAllocator, "Allocator for unordered_set<size_t>")),
-        m_AddrToPageId(STD_ALLOCATOR_RAW_MEM(AddrToPageIdMapElem, RawMemoryAllocator, "Allocator for unordered_map<void*, size_t>")),
+    FixedBlockMemoryAllocator::FixedBlockMemoryAllocator(IMemoryAllocator& RawMemoryAllocator,
+                                                         size_t            BlockSize,
+                                                         Uint32            NumBlocksInPage) :
+        m_PagePool          (STD_ALLOCATOR_RAW_MEM(MemoryPage, RawMemoryAllocator, "Allocator for vector<MemoryPage>")),
+        m_AvailablePages    (STD_ALLOCATOR_RAW_MEM(size_t, RawMemoryAllocator, "Allocator for unordered_set<size_t>")),
+        m_AddrToPageId      (STD_ALLOCATOR_RAW_MEM(AddrToPageIdMapElem, RawMemoryAllocator, "Allocator for unordered_map<void*, size_t>")),
         m_RawMemoryAllocator(RawMemoryAllocator),
-        m_BlockSize(BlockSize),
-        m_NumBlocksInPage(NumBlocksInPage)
+        m_BlockSize         (BlockSize),
+        m_NumBlocksInPage   (NumBlocksInPage)
     {
-        //tmpLargeBuffer = new Uint8[100 << 20];
-        //tmpCurrPtr = tmpLargeBuffer;
-        
         // Allocate one page
         CreateNewPage();
     }
 
     FixedBlockMemoryAllocator::~FixedBlockMemoryAllocator()
     {
-        //delete[] tmpLargeBuffer;
-
 #ifdef _DEBUG
         for (size_t p = 0; p < m_PagePool.size(); ++p)
         {
@@ -63,10 +60,6 @@ namespace Diligent
 
     void* FixedBlockMemoryAllocator::Allocate( size_t Size, const Char* dbgDescription, const char* dbgFileName, const  Int32 dbgLineNumber)
     {
-        //auto *ptr = tmpCurrPtr;
-        //tmpCurrPtr += Size;
-        //return ptr;
-
         VERIFY(m_BlockSize == Size, "Requested size (", Size, ") does not match the block size (", m_BlockSize, ")");
         
         std::lock_guard<std::mutex> LockGuard(m_Mutex);
-- 
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