diff --git a/README.md b/README.md
index b403ae8..2213016 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,8 @@ Additional features:
 - Thread-safety: Library is designed to be used in multithreaded code.
 - Configuration: Fill optional members of `ALLOCATOR_DESC` structure to provide custom CPU memory allocator and other parameters.
 - Customization: Predefine appropriate macros to provide your own implementation of external facilities used by the library, like assert, mutex, and atomic.
+- Statistics: Obtain detailed statistics about the amount of memory used, unused, number of allocated blocks, number of allocations etc. - globally and per memory heap type.
+- Debug annotations: Associate string name with every allocation.
 
 # Prerequisites
 
diff --git a/src/D3D12MemAlloc.cpp b/src/D3D12MemAlloc.cpp
index 874ee39..d4f4e1a 100644
--- a/src/D3D12MemAlloc.cpp
+++ b/src/D3D12MemAlloc.cpp
@@ -466,8 +466,6 @@ struct PointerLess
     }
 };
 
-static const UINT HEAP_TYPE_COUNT = 3;
-
 static UINT HeapTypeToIndex(D3D12_HEAP_TYPE type)
 {
     switch(type)
@@ -479,6 +477,29 @@ static UINT HeapTypeToIndex(D3D12_HEAP_TYPE type)
     }
 }
 
+// Stat helper functions
+
+static void AddStatInfo(StatInfo& dst, const StatInfo& src)
+{
+    dst.BlockCount += src.BlockCount;
+    dst.AllocationCount += src.AllocationCount;
+    dst.UnusedRangeCount += src.UnusedRangeCount;
+    dst.UsedBytes += src.UsedBytes;
+    dst.UnusedBytes += src.UnusedBytes;
+    dst.AllocationSizeMin = D3D12MA_MIN(dst.AllocationSizeMin, src.AllocationSizeMin);
+    dst.AllocationSizeMax = D3D12MA_MAX(dst.AllocationSizeMax, src.AllocationSizeMax);
+    dst.UnusedRangeSizeMin = D3D12MA_MIN(dst.UnusedRangeSizeMin, src.UnusedRangeSizeMin);
+    dst.UnusedRangeSizeMax = D3D12MA_MAX(dst.UnusedRangeSizeMax, src.UnusedRangeSizeMax);
+}
+
+static void PostProcessStatInfo(StatInfo& statInfo)
+{
+    statInfo.AllocationSizeAvg = statInfo.AllocationCount ?
+        statInfo.UsedBytes / statInfo.AllocationCount : 0;
+    statInfo.UnusedRangeSizeAvg = statInfo.UnusedRangeCount ?
+        statInfo.UnusedBytes / statInfo.UnusedRangeCount : 0;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Private class Vector
 
@@ -1406,11 +1427,15 @@ public:
     virtual void Free(const Allocation* allocation) = 0;
     virtual void FreeAtOffset(UINT64 offset) = 0;
 
+    virtual void CalcAllocationStatInfo(StatInfo& outInfo) const = 0;
+
 protected:
     const ALLOCATION_CALLBACKS* GetAllocs() const { return m_pAllocationCallbacks; }
 
 private:
     UINT64 m_Size;
+
+private:
     const ALLOCATION_CALLBACKS* m_pAllocationCallbacks;
 
     D3D12MA_CLASS_NO_COPY(BlockMetadata);
@@ -1442,6 +1467,8 @@ public:
     virtual void Free(const Allocation* allocation);
     virtual void FreeAtOffset(UINT64 offset);
 
+    virtual void CalcAllocationStatInfo(StatInfo& outInfo) const;
+
 private:
     UINT m_FreeCount;
     UINT64 m_SumFreeSize;
@@ -1482,7 +1509,7 @@ private:
 
 /*
 Represents a single block of device memory (heap) with all the data about its
-regions (aka suballocations, #Allocation), assigned and free.
+regions (aka suballocations, Allocation), assigned and free.
 
 Thread-safety: This class must be externally synchronized.
 */
@@ -1566,6 +1593,8 @@ public:
     void Free(
         Allocation* hAllocation);
 
+    void AddStats(Stats& outpStats);
+
 private:
     static UINT64 HeapFlagsToAlignment(D3D12_HEAP_FLAGS flags);
 
@@ -1646,6 +1675,8 @@ public:
     // Allocation object must be deleted externally afterwards.
     void FreePlacedMemory(Allocation* allocation);
 
+    void CalculateStats(Stats& outStats);
+
 private:
     friend class Allocator;
 
@@ -2183,6 +2214,40 @@ void BlockMetadata_Generic::UnregisterFreeSuballocation(SuballocationList::itera
     //D3D12MA_HEAVY_ASSERT(ValidateFreeSuballocationList());
 }
 
+void BlockMetadata_Generic::CalcAllocationStatInfo(StatInfo& outInfo) const
+{
+    outInfo.BlockCount = 1;
+
+    const UINT rangeCount = (UINT)m_Suballocations.size();
+    outInfo.AllocationCount = rangeCount - m_FreeCount;
+    outInfo.UnusedRangeCount = m_FreeCount;
+
+    outInfo.UsedBytes = GetSize() - m_SumFreeSize;
+    outInfo.UnusedBytes = m_SumFreeSize;
+
+    outInfo.AllocationSizeMin = UINT64_MAX;
+    outInfo.AllocationSizeMax = 0;
+    outInfo.UnusedRangeSizeMin = UINT64_MAX;
+    outInfo.UnusedRangeSizeMax = 0;
+
+    for(SuballocationList::const_iterator suballocItem = m_Suballocations.cbegin();
+        suballocItem != m_Suballocations.cend();
+        ++suballocItem)
+    {
+        const Suballocation& suballoc = *suballocItem;
+        if(suballoc.type == SUBALLOCATION_TYPE_FREE)
+        {
+            outInfo.UnusedRangeSizeMin = D3D12MA_MIN(suballoc.size, outInfo.UnusedRangeSizeMin);
+            outInfo.UnusedRangeSizeMax = D3D12MA_MAX(suballoc.size, outInfo.UnusedRangeSizeMax);
+        }
+        else
+        {
+            outInfo.AllocationSizeMin = D3D12MA_MIN(suballoc.size, outInfo.AllocationSizeMin);
+            outInfo.AllocationSizeMax = D3D12MA_MAX(suballoc.size, outInfo.AllocationSizeMax);
+        }
+    }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Private class DeviceMemoryBlock implementation
 
@@ -2624,6 +2689,25 @@ HRESULT BlockVector::CreateD3d12Heap(ID3D12Heap*& outHeap, UINT64 size) const
     return m_hAllocator->GetDevice()->CreateHeap(&heapDesc, IID_PPV_ARGS(&outHeap));
 }
 
+void BlockVector::AddStats(Stats& outStats)
+{
+    const UINT heapTypeIndex = HeapTypeToIndex(m_HeapType);
+    StatInfo* const pStatInfo = &outStats.HeapType[heapTypeIndex];
+
+    MutexLockRead lock(m_Mutex, m_hAllocator->UseMutex());
+
+    for(size_t i = 0; i < m_Blocks.size(); ++i)
+    {
+        const DeviceMemoryBlock* const pBlock = m_Blocks[i];
+        D3D12MA_ASSERT(pBlock);
+        D3D12MA_HEAVY_ASSERT(pBlock->Validate());
+        StatInfo blockStatInfo;
+        pBlock->m_pMetadata->CalcAllocationStatInfo(blockStatInfo);
+        AddStatInfo(outStats.Total, blockStatInfo);
+        AddStatInfo(*pStatInfo, blockStatInfo);
+    }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Private class AllocatorPimpl implementation
 
@@ -2935,6 +3019,57 @@ void AllocatorPimpl::FreePlacedMemory(Allocation* allocation)
     blockVector->Free(allocation);
 }
 
+void AllocatorPimpl::CalculateStats(Stats& outStats)
+{
+    // Init stats
+    memset(&outStats, 0, sizeof(outStats));
+    outStats.Total.AllocationSizeMin = UINT64_MAX;
+    outStats.Total.UnusedRangeSizeMin = UINT64_MAX;
+    for(size_t i = 0; i < HEAP_TYPE_COUNT; i++)
+    {
+        outStats.HeapType[i].AllocationSizeMin = UINT64_MAX;
+        outStats.HeapType[i].UnusedRangeSizeMin = UINT64_MAX;
+    }
+
+    // Process deafult pools.
+    for(size_t i = 0; i < HEAP_TYPE_COUNT; ++i)
+    {
+        BlockVector* const pBlockVector = m_BlockVectors[i];
+        D3D12MA_ASSERT(pBlockVector);
+        pBlockVector->AddStats(outStats);
+    }
+
+    // Process committed allocations.
+    for(size_t i = 0; i < HEAP_TYPE_COUNT; ++i)
+    {
+        StatInfo& heapStatInfo = outStats.HeapType[i];
+        MutexLockRead lock(m_CommittedAllocationsMutex[i], m_UseMutex);
+        const AllocationVectorType* const allocationVector = m_pCommittedAllocations[i];
+        D3D12MA_ASSERT(allocationVector);
+        for(size_t j = 0, count = allocationVector->size(); j < count; ++j)
+        {
+            UINT64 size = (*allocationVector)[j]->GetSize();
+            StatInfo statInfo = {};
+            statInfo.BlockCount = 1;
+            statInfo.AllocationCount = 1;
+            statInfo.UnusedRangeCount = 0;
+            statInfo.UsedBytes = size;
+            statInfo.UnusedBytes = 0;
+            statInfo.AllocationSizeMin = size;
+            statInfo.AllocationSizeMax = size;
+            statInfo.UnusedRangeSizeMin = 0;
+            statInfo.UnusedRangeSizeMax = 0;
+            AddStatInfo(outStats.Total, statInfo);
+            AddStatInfo(heapStatInfo, statInfo);
+        }
+    }
+
+    // Post process
+    PostProcessStatInfo(outStats.Total);
+    for(size_t i = 0; i < HEAP_TYPE_COUNT; ++i)
+        PostProcessStatInfo(outStats.HeapType[i]);
+}
+
 
 ////////////////////////////////////////////////////////////////////////////////
 // Public class Allocation implementation
@@ -3095,6 +3230,13 @@ HRESULT Allocator::CreateResource(
     return m_Pimpl->CreateResource(pAllocDesc, pResourceDesc, InitialResourceState, pOptimizedClearValue, ppAllocation, riidResource, ppvResource);
 }
 
+void Allocator::CalculateStats(Stats* pStats)
+{
+    D3D12MA_ASSERT(pStats);
+    D3D12MA_DEBUG_GLOBAL_MUTEX_LOCK
+    m_Pimpl->CalculateStats(*pStats);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Public global functions
 
diff --git a/src/D3D12MemAlloc.h b/src/D3D12MemAlloc.h
index 8fdcdf6..610fcea 100644
--- a/src/D3D12MemAlloc.h
+++ b/src/D3D12MemAlloc.h
@@ -24,7 +24,7 @@
 
 /** \mainpage D3D12 Memory Allocator
 
-<b>Version 1.0.0</b> (2019-09-02)
+<b>Version 1.0.0-development</b> (2019-09-30)
 
 Copyright (c) 2019 Advanced Micro Devices, Inc. All rights reserved. \n
 License: MIT
@@ -295,8 +295,7 @@ Near future: feature parity with [Vulkan Memory Allocator](https://github.com/GP
 
 - Custom memory pools
 - Alternative allocation algorithms: linear allocator, buddy allocator
-- Statistics about memory usage, number of allocations, allocated blocks etc.,
-  along with JSON dump that can be visualized on a picture
+- JSON dump that can be visualized on a picture
 - Support for priorities using `ID3D12Device1::SetResidencyPriority`
 - Support for "lost" allocations
 
@@ -536,6 +535,48 @@ struct ALLOCATOR_DESC
     const ALLOCATION_CALLBACKS* pAllocationCallbacks;
 };
 
+/**
+\brief Number of D3D12 memory heap types supported.
+*/
+const UINT HEAP_TYPE_COUNT = 3;
+
+/**
+\brief Calculated statistics of memory usage in entire allocator.
+*/
+struct StatInfo
+{
+    /// Number of memory blocks (heaps) allocated.
+    UINT BlockCount;
+    /// Number of D3D12MA::Allocation objects allocated.
+    UINT AllocationCount;
+    /// Number of free ranges of memory between allocations.
+    UINT UnusedRangeCount;
+    /// Total number of bytes occupied by all allocations.
+    UINT64 UsedBytes;
+    /// Total number of bytes occupied by unused ranges.
+    UINT64 UnusedBytes;
+    UINT64 AllocationSizeMin;
+    UINT64 AllocationSizeAvg;
+    UINT64 AllocationSizeMax;
+    UINT64 UnusedRangeSizeMin;
+    UINT64 UnusedRangeSizeAvg;
+    UINT64 UnusedRangeSizeMax;
+};
+
+/**
+\brief General statistics from the current state of the allocator.
+*/
+struct Stats
+{
+    /// Total statistics from all heap types.
+    StatInfo Total;
+    /**
+    One StatInfo for each type of heap located at the following indices:
+    0 - DEFAULT, 1 - UPLOAD, 2 - READBACK.
+    */
+    StatInfo HeapType[HEAP_TYPE_COUNT];
+};
+
 /**
 \brief Represents main object of this library initialized for particular `ID3D12Device`.
 
@@ -577,6 +618,10 @@ public:
         REFIID riidResource,
         void** ppvResource);
 
+    /** \brief Retrieves statistics from the current state of the allocator.
+    */
+    void CalculateStats(Stats* pStats);
+
 private:
     friend HRESULT CreateAllocator(const ALLOCATOR_DESC*, Allocator**);
     template<typename T> friend void D3D12MA_DELETE(const ALLOCATION_CALLBACKS&, T*);
diff --git a/src/Doxyfile b/src/Doxyfile
index 0b2b439..1bd8fae 100644
--- a/src/Doxyfile
+++ b/src/Doxyfile
@@ -1,4 +1,4 @@
-# Doxyfile 1.8.13
+# Doxyfile 1.8.16
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project.
@@ -17,11 +17,11 @@
 # Project related configuration options
 #---------------------------------------------------------------------------
 
-# This tag specifies the encoding used for all characters in the config file
-# that follow. The default is UTF-8 which is also the encoding used for all text
-# before the first occurrence of this tag. Doxygen uses libiconv (or the iconv
-# built into libc) for the transcoding. See http://www.gnu.org/software/libiconv
-# for the list of possible encodings.
+# This tag specifies the encoding used for all characters in the configuration
+# file that follow. The default is UTF-8 which is also the encoding used for all
+# text before the first occurrence of this tag. Doxygen uses libiconv (or the
+# iconv built into libc) for the transcoding. See
+# https://www.gnu.org/software/libiconv/ for the list of possible encodings.
 # The default value is: UTF-8.
 
 DOXYFILE_ENCODING      = UTF-8
@@ -93,6 +93,14 @@ ALLOW_UNICODE_NAMES    = NO
 
 OUTPUT_LANGUAGE        = English
 
+# The OUTPUT_TEXT_DIRECTION tag is used to specify the direction in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all generated output in the proper direction.
+# Possible values are: None, LTR, RTL and Context.
+# The default value is: None.
+
+OUTPUT_TEXT_DIRECTION  = None
+
 # If the BRIEF_MEMBER_DESC tag is set to YES, doxygen will include brief member
 # descriptions after the members that are listed in the file and class
 # documentation (similar to Javadoc). Set to NO to disable this.
@@ -189,6 +197,16 @@ SHORT_NAMES            = NO
 
 JAVADOC_AUTOBRIEF      = NO
 
+# If the JAVADOC_BANNER tag is set to YES then doxygen will interpret a line
+# such as
+# /***************
+# as being the beginning of a Javadoc-style comment "banner". If set to NO, the
+# Javadoc-style will behave just like regular comments and it will not be
+# interpreted by doxygen.
+# The default value is: NO.
+
+JAVADOC_BANNER         = NO
+
 # If the QT_AUTOBRIEF tag is set to YES then doxygen will interpret the first
 # line (until the first dot) of a Qt-style comment as the brief description. If
 # set to NO, the Qt-style will behave just like regular Qt-style comments (thus
@@ -236,7 +254,12 @@ TAB_SIZE               = 4
 # will allow you to put the command \sideeffect (or @sideeffect) in the
 # documentation, which will result in a user-defined paragraph with heading
 # "Side Effects:". You can put \n's in the value part of an alias to insert
-# newlines.
+# newlines (in the resulting output). You can put ^^ in the value part of an
+# alias to insert a newline as if a physical newline was in the original file.
+# When you need a literal { or } or , in the value part of an alias you have to
+# escape them by means of a backslash (\), this can lead to conflicts with the
+# commands \{ and \} for these it is advised to use the version @{ and @} or use
+# a double escape (\\{ and \\})
 
 ALIASES                =
 
@@ -274,17 +297,26 @@ OPTIMIZE_FOR_FORTRAN   = NO
 
 OPTIMIZE_OUTPUT_VHDL   = NO
 
+# Set the OPTIMIZE_OUTPUT_SLICE tag to YES if your project consists of Slice
+# sources only. Doxygen will then generate output that is more tailored for that
+# language. For instance, namespaces will be presented as modules, types will be
+# separated into more groups, etc.
+# The default value is: NO.
+
+OPTIMIZE_OUTPUT_SLICE  = NO
+
 # Doxygen selects the parser to use depending on the extension of the files it
 # parses. With this tag you can assign which parser to use for a given
 # extension. Doxygen has a built-in mapping, but you can override or extend it
 # using this tag. The format is ext=language, where ext is a file extension, and
 # language is one of the parsers supported by doxygen: IDL, Java, Javascript,
-# C#, C, C++, D, PHP, Objective-C, Python, Fortran (fixed format Fortran:
-# FortranFixed, free formatted Fortran: FortranFree, unknown formatted Fortran:
-# Fortran. In the later case the parser tries to guess whether the code is fixed
-# or free formatted code, this is the default for Fortran type files), VHDL. For
-# instance to make doxygen treat .inc files as Fortran files (default is PHP),
-# and .f files as C (default is Fortran), use: inc=Fortran f=C.
+# Csharp (C#), C, C++, D, PHP, md (Markdown), Objective-C, Python, Slice,
+# Fortran (fixed format Fortran: FortranFixed, free formatted Fortran:
+# FortranFree, unknown formatted Fortran: Fortran. In the later case the parser
+# tries to guess whether the code is fixed or free formatted code, this is the
+# default for Fortran type files), VHDL, tcl. For instance to make doxygen treat
+# .inc files as Fortran files (default is PHP), and .f files as C (default is
+# Fortran), use: inc=Fortran f=C.
 #
 # Note: For files without extension you can use no_extension as a placeholder.
 #
@@ -295,7 +327,7 @@ EXTENSION_MAPPING      =
 
 # If the MARKDOWN_SUPPORT tag is enabled then doxygen pre-processes all comments
 # according to the Markdown format, which allows for more readable
-# documentation. See http://daringfireball.net/projects/markdown/ for details.
+# documentation. See https://daringfireball.net/projects/markdown/ for details.
 # The output of markdown processing is further processed by doxygen, so you can
 # mix doxygen, HTML, and XML commands with Markdown formatting. Disable only in
 # case of backward compatibilities issues.
@@ -307,7 +339,7 @@ MARKDOWN_SUPPORT       = YES
 # to that level are automatically included in the table of contents, even if
 # they do not have an id attribute.
 # Note: This feature currently applies only to Markdown headings.
-# Minimum value: 0, maximum value: 99, default value: 0.
+# Minimum value: 0, maximum value: 99, default value: 5.
 # This tag requires that the tag MARKDOWN_SUPPORT is set to YES.
 
 TOC_INCLUDE_HEADINGS   = 0
@@ -337,7 +369,7 @@ BUILTIN_STL_SUPPORT    = NO
 CPP_CLI_SUPPORT        = NO
 
 # Set the SIP_SUPPORT tag to YES if your project consists of sip (see:
-# http://www.riverbankcomputing.co.uk/software/sip/intro) sources only. Doxygen
+# https://www.riverbankcomputing.com/software/sip/intro) sources only. Doxygen
 # will parse them like normal C++ but will assume all classes use public instead
 # of private inheritance when no explicit protection keyword is present.
 # The default value is: NO.
@@ -443,6 +475,12 @@ EXTRACT_ALL            = YES
 
 EXTRACT_PRIVATE        = NO
 
+# If the EXTRACT_PRIV_VIRTUAL tag is set to YES, documented private virtual
+# methods of a class will be included in the documentation.
+# The default value is: NO.
+
+EXTRACT_PRIV_VIRTUAL   = NO
+
 # If the EXTRACT_PACKAGE tag is set to YES, all members with package or internal
 # scope will be included in the documentation.
 # The default value is: NO.
@@ -521,7 +559,7 @@ INTERNAL_DOCS          = NO
 # names in lower-case letters. If set to YES, upper-case letters are also
 # allowed. This is useful if you have classes or files whose names only differ
 # in case and if your file system supports case sensitive file names. Windows
-# and Mac users are advised to set this option to NO.
+# (including Cygwin) ands Mac users are advised to set this option to NO.
 # The default value is: system dependent.
 
 CASE_SENSE_NAMES       = NO
@@ -708,7 +746,7 @@ LAYOUT_FILE            =
 # The CITE_BIB_FILES tag can be used to specify one or more bib files containing
 # the reference definitions. This must be a list of .bib files. The .bib
 # extension is automatically appended if omitted. This requires the bibtex tool
-# to be installed. See also http://en.wikipedia.org/wiki/BibTeX for more info.
+# to be installed. See also https://en.wikipedia.org/wiki/BibTeX for more info.
 # For LaTeX the style of the bibliography can be controlled using
 # LATEX_BIB_STYLE. To use this feature you need bibtex and perl available in the
 # search path. See also \cite for info how to create references.
@@ -753,7 +791,8 @@ WARN_IF_DOC_ERROR      = YES
 # This WARN_NO_PARAMDOC option can be enabled to get warnings for functions that
 # are documented, but have no documentation for their parameters or return
 # value. If set to NO, doxygen will only warn about wrong or incomplete
-# parameter documentation, but not about the absence of documentation.
+# parameter documentation, but not about the absence of documentation. If
+# EXTRACT_ALL is set to YES then this flag will automatically be disabled.
 # The default value is: NO.
 
 WARN_NO_PARAMDOC       = NO
@@ -795,7 +834,7 @@ INPUT                  = D3D12MemAlloc.h
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
 # libiconv (or the iconv built into libc) for the transcoding. See the libiconv
-# documentation (see: http://www.gnu.org/software/libiconv) for the list of
+# documentation (see: https://www.gnu.org/software/libiconv/) for the list of
 # possible encodings.
 # The default value is: UTF-8.
 
@@ -813,7 +852,7 @@ INPUT_ENCODING         = UTF-8
 # *.c++, *.java, *.ii, *.ixx, *.ipp, *.i++, *.inl, *.idl, *.ddl, *.odl, *.h,
 # *.hh, *.hxx, *.hpp, *.h++, *.cs, *.d, *.php, *.php4, *.php5, *.phtml, *.inc,
 # *.m, *.markdown, *.md, *.mm, *.dox, *.py, *.pyw, *.f90, *.f95, *.f03, *.f08,
-# *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf and *.qsf.
+# *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf, *.qsf and *.ice.
 
 FILE_PATTERNS          = *.c \
                          *.cc \
@@ -1011,7 +1050,7 @@ INLINE_SOURCES         = NO
 STRIP_CODE_COMMENTS    = YES
 
 # If the REFERENCED_BY_RELATION tag is set to YES then for each documented
-# function all documented functions referencing it will be listed.
+# entity all documented functions referencing it will be listed.
 # The default value is: NO.
 
 REFERENCED_BY_RELATION = NO
@@ -1043,12 +1082,12 @@ SOURCE_TOOLTIPS        = YES
 # If the USE_HTAGS tag is set to YES then the references to source code will
 # point to the HTML generated by the htags(1) tool instead of doxygen built-in
 # source browser. The htags tool is part of GNU's global source tagging system
-# (see http://www.gnu.org/software/global/global.html). You will need version
+# (see https://www.gnu.org/software/global/global.html). You will need version
 # 4.8.6 or higher.
 #
 # To use it do the following:
 # - Install the latest version of global
-# - Enable SOURCE_BROWSER and USE_HTAGS in the config file
+# - Enable SOURCE_BROWSER and USE_HTAGS in the configuration file
 # - Make sure the INPUT points to the root of the source tree
 # - Run doxygen as normal
 #
@@ -1076,7 +1115,7 @@ VERBATIM_HEADERS       = YES
 # rich C++ code for which doxygen's built-in parser lacks the necessary type
 # information.
 # Note: The availability of this option depends on whether or not doxygen was
-# generated with the -Duse-libclang=ON option for CMake.
+# generated with the -Duse_libclang=ON option for CMake.
 # The default value is: NO.
 
 CLANG_ASSISTED_PARSING = NO
@@ -1089,6 +1128,16 @@ CLANG_ASSISTED_PARSING = NO
 
 CLANG_OPTIONS          =
 
+# If clang assisted parsing is enabled you can provide the clang parser with the
+# path to the compilation database (see:
+# http://clang.llvm.org/docs/HowToSetupToolingForLLVM.html) used when the files
+# were built. This is equivalent to specifying the "-p" option to a clang tool,
+# such as clang-check. These options will then be passed to the parser.
+# Note: The availability of this option depends on whether or not doxygen was
+# generated with the -Duse_libclang=ON option for CMake.
+
+CLANG_DATABASE_PATH    =
+
 #---------------------------------------------------------------------------
 # Configuration options related to the alphabetical class index
 #---------------------------------------------------------------------------
@@ -1207,7 +1256,7 @@ HTML_EXTRA_FILES       =
 # The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
 # will adjust the colors in the style sheet and background images according to
 # this color. Hue is specified as an angle on a colorwheel, see
-# http://en.wikipedia.org/wiki/Hue for more information. For instance the value
+# https://en.wikipedia.org/wiki/Hue for more information. For instance the value
 # 0 represents red, 60 is yellow, 120 is green, 180 is cyan, 240 is blue, 300
 # purple, and 360 is red again.
 # Minimum value: 0, maximum value: 359, default value: 220.
@@ -1243,6 +1292,17 @@ HTML_COLORSTYLE_GAMMA  = 80
 
 HTML_TIMESTAMP         = NO
 
+# If the HTML_DYNAMIC_MENUS tag is set to YES then the generated HTML
+# documentation will contain a main index with vertical navigation menus that
+# are dynamically created via Javascript. If disabled, the navigation index will
+# consists of multiple levels of tabs that are statically embedded in every HTML
+# page. Disable this option to support browsers that do not have Javascript,
+# like the Qt help browser.
+# The default value is: YES.
+# This tag requires that the tag GENERATE_HTML is set to YES.
+
+HTML_DYNAMIC_MENUS     = YES
+
 # If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
 # documentation will contain sections that can be hidden and shown after the
 # page has loaded.
@@ -1266,13 +1326,13 @@ HTML_INDEX_NUM_ENTRIES = 100
 
 # If the GENERATE_DOCSET tag is set to YES, additional index files will be
 # generated that can be used as input for Apple's Xcode 3 integrated development
-# environment (see: http://developer.apple.com/tools/xcode/), introduced with
-# OSX 10.5 (Leopard). To create a documentation set, doxygen will generate a
+# environment (see: https://developer.apple.com/xcode/), introduced with OSX
+# 10.5 (Leopard). To create a documentation set, doxygen will generate a
 # Makefile in the HTML output directory. Running make will produce the docset in
 # that directory and running make install will install the docset in
 # ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find it at
-# startup. See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html
-# for more information.
+# startup. See https://developer.apple.com/library/archive/featuredarticles/Doxy
+# genXcode/_index.html for more information.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
@@ -1311,7 +1371,7 @@ DOCSET_PUBLISHER_NAME  = Publisher
 # If the GENERATE_HTMLHELP tag is set to YES then doxygen generates three
 # additional HTML index files: index.hhp, index.hhc, and index.hhk. The
 # index.hhp is a project file that can be read by Microsoft's HTML Help Workshop
-# (see: http://www.microsoft.com/en-us/download/details.aspx?id=21138) on
+# (see: https://www.microsoft.com/en-us/download/details.aspx?id=21138) on
 # Windows.
 #
 # The HTML Help Workshop contains a compiler that can convert all HTML output
@@ -1387,7 +1447,7 @@ QCH_FILE               =
 
 # The QHP_NAMESPACE tag specifies the namespace to use when generating Qt Help
 # Project output. For more information please see Qt Help Project / Namespace
-# (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#namespace).
+# (see: https://doc.qt.io/archives/qt-4.8/qthelpproject.html#namespace).
 # The default value is: org.doxygen.Project.
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
@@ -1395,7 +1455,7 @@ QHP_NAMESPACE          = org.doxygen.Project
 
 # The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating Qt
 # Help Project output. For more information please see Qt Help Project / Virtual
-# Folders (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#virtual-
+# Folders (see: https://doc.qt.io/archives/qt-4.8/qthelpproject.html#virtual-
 # folders).
 # The default value is: doc.
 # This tag requires that the tag GENERATE_QHP is set to YES.
@@ -1404,7 +1464,7 @@ QHP_VIRTUAL_FOLDER     = doc
 
 # If the QHP_CUST_FILTER_NAME tag is set, it specifies the name of a custom
 # filter to add. For more information please see Qt Help Project / Custom
-# Filters (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#custom-
+# Filters (see: https://doc.qt.io/archives/qt-4.8/qthelpproject.html#custom-
 # filters).
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
@@ -1412,7 +1472,7 @@ QHP_CUST_FILTER_NAME   =
 
 # The QHP_CUST_FILTER_ATTRS tag specifies the list of the attributes of the
 # custom filter to add. For more information please see Qt Help Project / Custom
-# Filters (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#custom-
+# Filters (see: https://doc.qt.io/archives/qt-4.8/qthelpproject.html#custom-
 # filters).
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
@@ -1420,7 +1480,7 @@ QHP_CUST_FILTER_ATTRS  =
 
 # The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
 # project's filter section matches. Qt Help Project / Filter Attributes (see:
-# http://qt-project.org/doc/qt-4.8/qthelpproject.html#filter-attributes).
+# https://doc.qt.io/archives/qt-4.8/qthelpproject.html#filter-attributes).
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
 QHP_SECT_FILTER_ATTRS  =
@@ -1513,7 +1573,7 @@ EXT_LINKS_IN_WINDOW    = NO
 
 FORMULA_FONTSIZE       = 10
 
-# Use the FORMULA_TRANPARENT tag to determine whether or not the images
+# Use the FORMULA_TRANSPARENT tag to determine whether or not the images
 # generated for formulas are transparent PNGs. Transparent PNGs are not
 # supported properly for IE 6.0, but are supported on all modern browsers.
 #
@@ -1525,7 +1585,7 @@ FORMULA_FONTSIZE       = 10
 FORMULA_TRANSPARENT    = YES
 
 # Enable the USE_MATHJAX option to render LaTeX formulas using MathJax (see
-# http://www.mathjax.org) which uses client side Javascript for the rendering
+# https://www.mathjax.org) which uses client side Javascript for the rendering
 # instead of using pre-rendered bitmaps. Use this if you do not have LaTeX
 # installed or if you want to formulas look prettier in the HTML output. When
 # enabled you may also need to install MathJax separately and configure the path
@@ -1552,8 +1612,8 @@ MATHJAX_FORMAT         = HTML-CSS
 # MATHJAX_RELPATH should be ../mathjax. The default value points to the MathJax
 # Content Delivery Network so you can quickly see the result without installing
 # MathJax. However, it is strongly recommended to install a local copy of
-# MathJax from http://www.mathjax.org before deployment.
-# The default value is: http://cdn.mathjax.org/mathjax/latest.
+# MathJax from https://www.mathjax.org before deployment.
+# The default value is: https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/.
 # This tag requires that the tag USE_MATHJAX is set to YES.
 
 MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest
@@ -1614,7 +1674,7 @@ SERVER_BASED_SEARCH    = NO
 #
 # Doxygen ships with an example indexer (doxyindexer) and search engine
 # (doxysearch.cgi) which are based on the open source search engine library
-# Xapian (see: http://xapian.org/).
+# Xapian (see: https://xapian.org/).
 #
 # See the section "External Indexing and Searching" for details.
 # The default value is: NO.
@@ -1627,7 +1687,7 @@ EXTERNAL_SEARCH        = NO
 #
 # Doxygen ships with an example indexer (doxyindexer) and search engine
 # (doxysearch.cgi) which are based on the open source search engine library
-# Xapian (see: http://xapian.org/). See the section "External Indexing and
+# Xapian (see: https://xapian.org/). See the section "External Indexing and
 # Searching" for details.
 # This tag requires that the tag SEARCHENGINE is set to YES.
 
@@ -1679,21 +1739,35 @@ LATEX_OUTPUT           = latex
 # The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
 # invoked.
 #
-# Note that when enabling USE_PDFLATEX this option is only used for generating
-# bitmaps for formulas in the HTML output, but not in the Makefile that is
-# written to the output directory.
-# The default file is: latex.
+# Note that when not enabling USE_PDFLATEX the default is latex when enabling
+# USE_PDFLATEX the default is pdflatex and when in the later case latex is
+# chosen this is overwritten by pdflatex. For specific output languages the
+# default can have been set differently, this depends on the implementation of
+# the output language.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_CMD_NAME         = latex
 
 # The MAKEINDEX_CMD_NAME tag can be used to specify the command name to generate
 # index for LaTeX.
+# Note: This tag is used in the Makefile / make.bat.
+# See also: LATEX_MAKEINDEX_CMD for the part in the generated output file
+# (.tex).
 # The default file is: makeindex.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 MAKEINDEX_CMD_NAME     = makeindex
 
+# The LATEX_MAKEINDEX_CMD tag can be used to specify the command name to
+# generate index for LaTeX. In case there is no backslash (\) as first character
+# it will be automatically added in the LaTeX code.
+# Note: This tag is used in the generated output file (.tex).
+# See also: MAKEINDEX_CMD_NAME for the part in the Makefile / make.bat.
+# The default value is: makeindex.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_MAKEINDEX_CMD    = makeindex
+
 # If the COMPACT_LATEX tag is set to YES, doxygen generates more compact LaTeX
 # documents. This may be useful for small projects and may help to save some
 # trees in general.
@@ -1814,7 +1888,7 @@ LATEX_SOURCE_CODE      = NO
 
 # The LATEX_BIB_STYLE tag can be used to specify the style to use for the
 # bibliography, e.g. plainnat, or ieeetr. See
-# http://en.wikipedia.org/wiki/BibTeX and \cite for more info.
+# https://en.wikipedia.org/wiki/BibTeX and \cite for more info.
 # The default value is: plain.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
@@ -1828,6 +1902,14 @@ LATEX_BIB_STYLE        = plain
 
 LATEX_TIMESTAMP        = NO
 
+# The LATEX_EMOJI_DIRECTORY tag is used to specify the (relative or absolute)
+# path from which the emoji images will be read. If a relative path is entered,
+# it will be relative to the LATEX_OUTPUT directory. If left blank the
+# LATEX_OUTPUT directory will be used.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_EMOJI_DIRECTORY  =
+
 #---------------------------------------------------------------------------
 # Configuration options related to the RTF output
 #---------------------------------------------------------------------------
@@ -1867,9 +1949,9 @@ COMPACT_RTF            = NO
 
 RTF_HYPERLINKS         = NO
 
-# Load stylesheet definitions from file. Syntax is similar to doxygen's config
-# file, i.e. a series of assignments. You only have to provide replacements,
-# missing definitions are set to their default value.
+# Load stylesheet definitions from file. Syntax is similar to doxygen's
+# configuration file, i.e. a series of assignments. You only have to provide
+# replacements, missing definitions are set to their default value.
 #
 # See also section "Doxygen usage" for information on how to generate the
 # default style sheet that doxygen normally uses.
@@ -1878,8 +1960,8 @@ RTF_HYPERLINKS         = NO
 RTF_STYLESHEET_FILE    =
 
 # Set optional variables used in the generation of an RTF document. Syntax is
-# similar to doxygen's config file. A template extensions file can be generated
-# using doxygen -e rtf extensionFile.
+# similar to doxygen's configuration file. A template extensions file can be
+# generated using doxygen -e rtf extensionFile.
 # This tag requires that the tag GENERATE_RTF is set to YES.
 
 RTF_EXTENSIONS_FILE    =
@@ -1965,6 +2047,13 @@ XML_OUTPUT             = xml
 
 XML_PROGRAMLISTING     = YES
 
+# If the XML_NS_MEMB_FILE_SCOPE tag is set to YES, doxygen will include
+# namespace members in file scope as well, matching the HTML output.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_XML is set to YES.
+
+XML_NS_MEMB_FILE_SCOPE = NO
+
 #---------------------------------------------------------------------------
 # Configuration options related to the DOCBOOK output
 #---------------------------------------------------------------------------
@@ -1997,9 +2086,9 @@ DOCBOOK_PROGRAMLISTING = NO
 #---------------------------------------------------------------------------
 
 # If the GENERATE_AUTOGEN_DEF tag is set to YES, doxygen will generate an
-# AutoGen Definitions (see http://autogen.sf.net) file that captures the
-# structure of the code including all documentation. Note that this feature is
-# still experimental and incomplete at the moment.
+# AutoGen Definitions (see http://autogen.sourceforge.net/) file that captures
+# the structure of the code including all documentation. Note that this feature
+# is still experimental and incomplete at the moment.
 # The default value is: NO.
 
 GENERATE_AUTOGEN_DEF   = NO
@@ -2166,12 +2255,6 @@ EXTERNAL_GROUPS        = YES
 
 EXTERNAL_PAGES         = YES
 
-# The PERL_PATH should be the absolute path and name of the perl script
-# interpreter (i.e. the result of 'which perl').
-# The default file (with absolute path) is: /usr/bin/perl.
-
-PERL_PATH              = /usr/bin/perl
-
 #---------------------------------------------------------------------------
 # Configuration options related to the dot tool
 #---------------------------------------------------------------------------
@@ -2185,15 +2268,6 @@ PERL_PATH              = /usr/bin/perl
 
 CLASS_DIAGRAMS         = YES
 
-# You can define message sequence charts within doxygen comments using the \msc
-# command. Doxygen will then run the mscgen tool (see:
-# http://www.mcternan.me.uk/mscgen/)) to produce the chart and insert it in the
-# documentation. The MSCGEN_PATH tag allows you to specify the directory where
-# the mscgen tool resides. If left empty the tool is assumed to be found in the
-# default search path.
-
-MSCGEN_PATH            =
-
 # You can include diagrams made with dia in doxygen documentation. Doxygen will
 # then run dia to produce the diagram and insert it in the documentation. The
 # DIA_PATH tag allows you to specify the directory where the dia binary resides.
diff --git a/src/Tests.cpp b/src/Tests.cpp
index 0f22d35..45c32c8 100644
--- a/src/Tests.cpp
+++ b/src/Tests.cpp
@@ -281,6 +281,95 @@ static void TestMapping(const TestContext& ctx)
     }
 }
 
+static inline bool StatInfoEqual(const D3D12MA::StatInfo& lhs, const D3D12MA::StatInfo& rhs)
+{
+    return lhs.BlockCount == rhs.BlockCount &&
+        lhs.AllocationCount == rhs.AllocationCount &&
+        lhs.UnusedRangeCount == rhs.UnusedRangeCount &&
+        lhs.UsedBytes == rhs.UsedBytes &&
+        lhs.UnusedBytes == rhs.UnusedBytes &&
+        lhs.AllocationSizeMin == rhs.AllocationSizeMin &&
+        lhs.AllocationSizeMax == rhs.AllocationSizeMax &&
+        lhs.AllocationSizeAvg == rhs.AllocationSizeAvg &&
+        lhs.UnusedRangeSizeMin == rhs.UnusedRangeSizeMin &&
+        lhs.UnusedRangeSizeMax == rhs.UnusedRangeSizeMax &&
+        lhs.UnusedRangeSizeAvg == rhs.UnusedRangeSizeAvg;
+}
+
+static void CheckStatInfo(const D3D12MA::StatInfo& statInfo)
+{
+    if(statInfo.AllocationCount > 0)
+    {
+        CHECK_BOOL(statInfo.AllocationSizeAvg >= statInfo.AllocationSizeMin &&
+            statInfo.AllocationSizeAvg <= statInfo.AllocationSizeMax);
+    }
+    if(statInfo.UsedBytes > 0)
+    {
+        CHECK_BOOL(statInfo.AllocationCount > 0);
+    }
+    if(statInfo.UnusedRangeCount > 0)
+    {
+        CHECK_BOOL(statInfo.UnusedRangeSizeAvg >= statInfo.UnusedRangeSizeMin &&
+            statInfo.UnusedRangeSizeAvg <= statInfo.UnusedRangeSizeMax);
+        CHECK_BOOL(statInfo.UnusedRangeSizeMin > 0);
+        CHECK_BOOL(statInfo.UnusedRangeSizeMax > 0);
+    }
+}
+
+static void TestStats(const TestContext& ctx)
+{
+    wprintf(L"Test stats\n");
+
+    D3D12MA::Stats begStats = {};
+    ctx.allocator->CalculateStats(&begStats);
+
+    const UINT count = 10;
+    const UINT64 bufSize = 64ull * 1024;
+    ResourceWithAllocation resources[count];
+
+    D3D12MA::ALLOCATION_DESC allocDesc = {};
+    allocDesc.HeapType = D3D12_HEAP_TYPE_UPLOAD;
+
+    D3D12_RESOURCE_DESC resourceDesc;
+    FillResourceDescForBuffer(resourceDesc, bufSize);
+
+    for(UINT i = 0; i < count; ++i)
+    {
+        D3D12MA::Allocation* alloc = nullptr;
+        CHECK_HR( ctx.allocator->CreateResource(
+            &allocDesc,
+            &resourceDesc,
+            D3D12_RESOURCE_STATE_GENERIC_READ,
+            NULL,
+            &alloc,
+            IID_PPV_ARGS(&resources[i].resource)) );
+        resources[i].allocation.reset(alloc);
+    }
+
+    D3D12MA::Stats endStats = {};
+    ctx.allocator->CalculateStats(&endStats);
+
+    CHECK_BOOL(endStats.Total.BlockCount >= begStats.Total.BlockCount);
+    CHECK_BOOL(endStats.Total.AllocationCount == begStats.Total.AllocationCount + count);
+    CHECK_BOOL(endStats.Total.UsedBytes == begStats.Total.UsedBytes + count * bufSize);
+    CHECK_BOOL(endStats.Total.AllocationSizeMin <= bufSize);
+    CHECK_BOOL(endStats.Total.AllocationSizeMax >= bufSize);
+
+    CHECK_BOOL(endStats.HeapType[1].BlockCount >= begStats.HeapType[1].BlockCount);
+    CHECK_BOOL(endStats.HeapType[1].AllocationCount >= begStats.HeapType[1].AllocationCount + count);
+    CHECK_BOOL(endStats.HeapType[1].UsedBytes >= begStats.HeapType[1].UsedBytes + count * bufSize);
+    CHECK_BOOL(endStats.HeapType[1].AllocationSizeMin <= bufSize);
+    CHECK_BOOL(endStats.HeapType[1].AllocationSizeMax >= bufSize);
+
+    CHECK_BOOL(StatInfoEqual(begStats.HeapType[0], endStats.HeapType[0]));
+    CHECK_BOOL(StatInfoEqual(begStats.HeapType[2], endStats.HeapType[2]));
+
+    CheckStatInfo(endStats.Total);
+    CheckStatInfo(endStats.HeapType[0]);
+    CheckStatInfo(endStats.HeapType[1]);
+    CheckStatInfo(endStats.HeapType[2]);
+}
+
 static void TestTransfer(const TestContext& ctx)
 {
     wprintf(L"Test mapping\n");
@@ -527,6 +616,7 @@ static void TestGroupBasics(const TestContext& ctx)
     TestCommittedResources(ctx);
     TestPlacedResources(ctx);
     TestMapping(ctx);
+    TestStats(ctx);
     TestTransfer(ctx);
     TestMultithreading(ctx);
 }