Squashed 'external/gainput/' content from commit 2be0a50

git-subtree-dir: external/gainput
git-subtree-split: 2be0a50089eafcc6fccb66142180082e48f27f4c

lib/source/gainput/GainputAllocator.cpp

@@ -0,0 +1,58 @@
+
+#include <gainput/gainput.h>
+
+#include <gainput/GainputLog.h>
+
+namespace gainput
+{
+
+DefaultAllocator&
+GetDefaultAllocator()
+{
+	static DefaultAllocator da;
+	return da;
+}
+
+
+TrackingAllocator::TrackingAllocator(Allocator& backingAllocator, Allocator& internalAllocator)
+	: backingAllocator_(backingAllocator),
+	internalAllocator_(internalAllocator),
+	allocations_(internalAllocator.New<HashMap<void*, size_t> >(internalAllocator)),
+	allocateCount_(0),
+	deallocateCount_(0),
+	allocatedMemory_(0)
+{
+}
+
+TrackingAllocator::~TrackingAllocator()
+{
+	internalAllocator_.Delete(allocations_);
+}
+
+void* TrackingAllocator::Allocate(size_t size, size_t align)
+{
+	void* ptr = backingAllocator_.Allocate(size, align);
+	(*allocations_)[ptr] = size;
+	++allocateCount_;
+	allocatedMemory_ += size;
+	return ptr;
+}
+
+void TrackingAllocator::Deallocate(void* ptr)
+{
+	HashMap<void*, size_t>::iterator it = allocations_->find(ptr);
+	if (it == allocations_->end())
+	{
+		GAINPUT_LOG("Warning: Trying to deallocate unknown memory block: %p\n", ptr);
+	}
+	else
+	{
+		allocatedMemory_ -= it->second;
+		allocations_->erase(it);
+	}
+	++deallocateCount_;
+	backingAllocator_.Deallocate(ptr);
+}
+
+}
+