TBB 4.0 Update 4

Changes (w.r.t. TBB 4.0 Update 3):

- The TBB memory allocator transparently supports large pages on Linux.

- A new flow_graph example, logic_sim, was added.

- Support for DirectX* 9 was added to GUI examples.

Community Preview Features:

- Added: aggregator, a new concurrency control mechanism.

Bugs fixed:

- The abort operation on concurrent_bounded_queue now leaves the queue

    in a reusable state. If a bad_alloc or bad_last_alloc exception is

    thrown while the queue is recovering from an abort, that exception

    will be reported instead of user_abort on the thread on which it

    occurred, and the queue will not be reusable.

- Steal limiting heuristic fixed to avoid premature stealing disabling

    when large amount of __thread data is allocated on thread stack.

- Fixed a low-probability leak of arenas in the task scheduler.

- In STL-compatible allocator classes, the method construct() was fixed

    to comply with C++11 requirements.

- Fixed a bug that prevented creation of fixed-size memory pools

    smaller than 2M.

- Significantly reduced the amount of warnings from various compilers.

Open-source contributions integrated:

- Multiple improvements by Raf Schietekat.

- Basic support for Clang on Mac OS X* by Blas Rodriguez Somoza.

- Fixes for warnings and corner-case bugs by Blas Rodriguez Somoza

    and Edward Lam.

------------------------------------------------------------------------

TBB 4.0 Update 3

Changes (w.r.t. TBB 4.0 Update 2):

- Modifications to the low-level API for memory pools:

    added support for aligned allocations;

    pool policies reworked to allow backward-compatible extensions;

    added a policy to not return memory space till destruction;

    pool_reset() does not return memory space anymore.

- Class tbb::flow::graph_iterator added to iterate over all nodes

    registered with a graph instance.

- multioutput_function_node has been renamed multifunction_node.

    multifunction_node and split_node are now fully-supported features.

- For the tagged join node, the policy for try_put of an item with

    already existing tag has been defined: the item will be rejected.

- Matching the behavior on Windows, on other platforms the optional

    shared libraries (libtbbmalloc, libirml) now are also searched

    only in the directory where libtbb is located.

- The platform isolation layer based on GCC built-ins is extended.

Backward-incompatible API changes:

- a graph reference parameter is now required to be passed to the

    constructors of the following flow graph nodes: overwrite_node, 

    write_once_node, broadcast_node, and the CPF or_node.

- the following tbb::flow node methods and typedefs have been renamed:

       Old                             New

    join_node and or_node:

       inputs()                 ->     input_ports()

       input_ports_tuple_type   ->     input_ports_type

    multifunction_node and split_node:

       ports_type               ->     output_ports_type

Bugs fixed:

- Not all logical processors were utilized on systems with more than

    64 cores split by Windows into several processor groups.

------------------------------------------------------------------------

TBB 4.0 Update 2 commercial-aligned release

Changes (w.r.t. TBB 4.0 Update 1 commercial-aligned release):

- concurrent_bounded_queue now has an abort() operation that releases 

    threads involved in pending push or pop operations. The released 

    threads will receive a tbb::user_abort exception.

- Added Community Preview Feature:  concurrent_lru_cache container, 

    a concurrent implementation of LRU (least-recently-used) cache.

Bugs fixed:

- fixed a race condition in the TBB scalable allocator.

- concurrent_queue counter wraparound bug was fixed, which occurred when

    the number of push and pop operations exceeded ~>4 billion on IA32.

- fixed races in the TBB scheduler that could put workers asleep too

    early, especially in presense of affinitized tasks.

------------------------------------------------------------------------

TBB 4.0 Update 1 commercial-aligned release

Changes (w.r.t. TBB 4.0 commercial-aligned release):

- Memory leaks fixed in binpack example.

- Improvements and fixes in the TBB allocator.

------------------------------------------------------------------------

TBB 4.0 commercial-aligned release

Changes (w.r.t. TBB 3.0 Update 8 commercial-aligned release):

- concurrent_priority_queue is now a fully supported feature.

    Capacity control methods were removed.

- Flow graph is now a fully supported feature.

- A new memory backend has been implemented in the TBB allocator.

    It can reuse freed memory for both small and large objects, and

    returns unused memory blocks to the OS more actively.

- Improved partitioning algorithms for parallel_for and parallel_reduce

    to better handle load imbalance.

- The convex_hull example has been refactored for reproducible

    performance results.

- The major interface version has changed from 5 to 6.

    Deprecated interfaces might be removed in future releases.

Community Preview Features:

- Added: serial subset, i.e. sequential implementations of TBB generic

    algorithms (currently, only provided for parallel_for).

- Preview of new flow graph nodes:

    or_node (accepts multiple inputs, forwards each input separately

      to all successors),

    split_node (accepts tuples, and forwards each element of a tuple

      to a corresponding successor), and

    multioutput_function_node (accepts one input, and passes the input

    and a tuple of output ports to the function body to support outputs

    to multiple successors).

- Added: memory pools for more control on memory source, grouping,

    and collective deallocation.

------------------------------------------------------------------------

TBB 3.0 Update 8 commercial-aligned release

Changes (w.r.t. TBB 3.0 Update 7 commercial-aligned release):

- Task priorities become an official feature of TBB,

    not community preview as before.

- Atomics API extended, and implementation refactored.

- Added task::set_parent() method.

- Added concurrent_unordered_set container.

Open-source contributions integrated:

- PowerPC support by Raf Schietekat.

- Fix of potential task pool overrun and other improvements

    in the task scheduler by Raf Schietekat.

- Fix in parallel_for_each to work with std::set in Visual* C++ 2010.

Community Preview Features:

- Graph community preview feature was renamed to flow graph.

    Multiple improvements in the implementation.

    Binpack example was added for the feature.

- A number of improvements to concurrent_priority_queue.

    Shortpath example was added for the feature.

- TBB runtime loaded functionality was added (Windows*-only).

    It allows to specify which versions of TBB should be used,

    as well as to set directories for the library search.

- parallel_deterministic_reduce template function was added.

------------------------------------------------------------------------

TBB 3.0 Update 7 commercial-aligned release

Changes (w.r.t. TBB 3.0 Update 6 commercial-aligned release):

- Added implementation of the platform isolation layer based on 

    GCC atomic built-ins; it is supposed to work on any platform 

    where GCC has these built-ins.

Community Preview Features:

- Graph's dining_philosophers example added.

- A number of improvements to graph and concurrent_priority_queue.

------------------------------------------------------------------------

TBB 3.0 Update 6 commercial-aligned release

Changes (w.r.t. TBB 3.0 Update 5 commercial-aligned release):

- Added Community Preview feature: task and task group priority, and

    Fractal example demonstrating it.

- parallel_pipeline optimized for data items of small and large sizes.

- Graph's join_node is now parametrized with a tuple of up to 10 types.

- Improved performance of concurrent_priority_queue.

Open-source contributions integrated:

- Initial NetBSD support by Aleksej Saushev.

Bugs fixed:

- Failure to enable interoperability with Intel(R) Cilk(tm) Plus runtime

    library, and a crash caused by invoking the interoperability layer

    after one of the libraries was unloaded.

- Data race that could result in concurrent_unordered_map structure

    corruption after call to clear() method.

- Stack corruption caused by PIC version of 64-bit CAS compiled by Intel

    compiler on Linux.

- Inconsistency of exception propagation mode possible when application

    built with Microsoft* Visual Studio* 2008 or earlier uses TBB built

    with Microsoft* Visual Studio* 2010.

- Affinitizing master thread to a subset of available CPUs after TBB

    scheduler was initialized tied all worker threads to the same CPUs.

- Method is_stolen_task() always returned 'false' for affinitized tasks.

- write_once_node and overwrite_node did not immediately send buffered

    items to successors

------------------------------------------------------------------------

TBB 3.0 Update 5 commercial-aligned release

Changes (w.r.t. TBB 3.0 Update 4 commercial-aligned release):

- Added Community Preview feature: graph.

- Added automatic propagation of master thread FPU settings to

    TBB worker threads.

- Added a public function to perform a sequentially consistent full 

    memory fence: tbb::atomic_fence() in tbb/atomic.h.

Bugs fixed:

- Data race that could result in scheduler data structures corruption

    when using fire-and-forget tasks.

- Potential referencing of destroyed concurrent_hash_map element after

    using erase(accessor&A) method with A acquired as const_accessor.

- Fixed a correctness bug in the convex hull example.

Open-source contributions integrated:

- Patch for calls to internal::atomic_do_once() by Andrey Semashev.

------------------------------------------------------------------------

TBB 3.0 Update 4 commercial-aligned release

Changes (w.r.t. TBB 3.0 Update 3 commercial-aligned release):

- Added Community Preview feature: concurrent_priority_queue.

- Fixed library loading to avoid possibility for remote code execution,

    see http://www.microsoft.com/technet/security/advisory/2269637.mspx.

- Added support of more than 64 cores for appropriate Microsoft* 

    Windows* versions. For more details, see 

    http://msdn.microsoft.com/en-us/library/dd405503.aspx.

- Default number of worker threads is adjusted in accordance with 

    process affinity mask.

Bugs fixed:

- Calls of scalable_* functions from inside the allocator library 

    caused issues if the functions were overridden by another module.

- A crash occurred if methods run() and wait() were called concurrently

    for an empty tbb::task_group (1736).

- The tachyon example exhibited build problems associated with 

    bug 554339 on Microsoft* Visual Studio* 2010. Project files were

    modified as a partial workaround to overcome the problem. See 

    http://connect.microsoft.com/VisualStudio/feedback/details/554339.

------------------------------------------------------------------------

TBB 3.0 Update 3 commercial-aligned release

Changes (w.r.t. TBB 3.0 Update 2 commercial-aligned release):

- cache_aligned_allocator class reworked to use scalable_aligned_malloc.

- Improved performance of count() and equal_range() methods

    in concurrent_unordered_map.

- Improved implementation of 64-bit atomic loads and stores on 32-bit

    platforms, including compilation with VC 7.1.

- Added implementation of atomic operations on top of OSAtomic API

    provided by Mac OS* X.

- Removed gratuitous try/catch blocks surrounding thread function calls

  in tbb_thread.

- Xcode* projects were added for sudoku and game_of_life examples.

- Xcode* projects were updated to work without TBB framework.

Bugs fixed:

- Fixed a data race in task scheduler destruction that on rare occasion

    could result in memory corruption.

- Fixed idle spinning in thread bound filters in tbb::pipeline (1670).

Open-source contributions integrated:

- MinGW-64 basic support by brsomoza (partially).

- Patch for atomic.h by Andrey Semashev.

- Support for AIX & GCC on PowerPC by Giannis Papadopoulos.

- Various improvements by Raf Schietekat.

------------------------------------------------------------------------

TBB 3.0 Update 2 commercial-aligned release

Changes (w.r.t. TBB 3.0 Update 1 commercial-aligned release):

- Destructor of tbb::task_group class throws missing_wait exception

    if there are tasks running when it is invoked.

- Interoperability layer with Intel Cilk Plus runtime library added

    to protect TBB TLS in case of nested usage with Intel Cilk Plus.

- Compilation fix for dependent template names in concurrent_queue.

- Memory allocator code refactored to ease development and maintenance.

Bugs fixed:

- Improved interoperability with other Intel software tools on Linux in

    case of dynamic replacement of memory allocator (1700)

- Fixed install issues that prevented installation on

    Mac OS* X 10.6.4 (1711).

------------------------------------------------------------------------

TBB 3.0 Update 1 commercial-aligned release

Changes (w.r.t. TBB 3.0 commercial-aligned release):

- Decreased memory fragmentation by allocations bigger than 8K.

- Lazily allocate worker threads, to avoid creating unnecessary stacks.

Bugs fixed:

- TBB allocator used much more memory than malloc (1703) - see above.

- Deadlocks happened in some specific initialization scenarios

    of the TBB allocator (1701, 1704).

- Regression in enumerable_thread_specific: excessive requirements

    for object constructors.

- A bug in construction of parallel_pipeline filters when body instance

    was a temporary object.

- Incorrect usage of memory fences on PowerPC and XBOX360 platforms.

- A subtle issue in task group context binding that could result

    in cancelation signal being missed by nested task groups.

- Incorrect construction of concurrent_unordered_map if specified

    number of buckets is not power of two.

- Broken count() and equal_range() of concurrent_unordered_map.

- Return type of postfix form of operator++ for hash map's iterators.

------------------------------------------------------------------------

TBB 3.0 commercial-aligned release

Changes (w.r.t. TBB 2.2 Update 3 commercial-aligned release):

- All open-source-release changes down to TBB 2.2 U3 below

    were incorporated into this release.

------------------------------------------------------------------------

20100406 open-source release

Changes (w.r.t. 20100310 open-source release):

- Added support for Microsoft* Visual Studio* 2010, including binaries.

- Added a PDF file with recommended Design Patterns for TBB.

- Added parallel_pipeline function and companion classes and functions

    that provide a strongly typed lambda-friendly pipeline interface.

- Reworked enumerable_thread_specific to use a custom implementation of

    hash map that is more efficient for ETS usage models.

- Added example for class task_group; see examples/task_group/sudoku.

- Removed two examples, as they were long outdated and superceded:

    pipeline/text_filter (use pipeline/square);

    parallel_while/parallel_preorder (use parallel_do/parallel_preorder).

- PDF documentation updated.

- Other fixes and changes in code, tests, and examples.

Bugs fixed:

- Eliminated build errors with MinGW32.

- Fixed post-build step and other issues in VS projects for examples.

- Fixed discrepancy between scalable_realloc and scalable_msize that

    caused crashes with malloc replacement on Windows.

------------------------------------------------------------------------

20100310 open-source release

Changes (w.r.t. TBB 2.2 Update 3 commercial-aligned release):

- Version macros changed in anticipation of a future release.

- Directory structure aligned with Intel(R) C++ Compiler;

    now TBB binaries reside in <arch>/<os_key>/[bin|lib]

    (in TBB 2.x, it was [bin|lib]/<arch>/<os_key>).

- Visual Studio projects changed for examples: instead of separate set

    of files for each VS version, now there is single 'msvs' directory

    that contains workspaces for MS C++ compiler (<example>_cl.sln) and

    Intel C++ compiler (<example>_icl.sln). Works with VS 2005 and above.

- The name versioning scheme for backward compatibility was improved;

    now compatibility-breaking changes are done in a separate namespace.

- Added concurrent_unordered_map implementation based on a prototype

    developed in Microsoft for a future version of PPL.

- Added PPL-compatible writer-preference RW lock (reader_writer_lock).

- Added TBB_IMPLEMENT_CPP0X macro to control injection of C++0x names

    implemented in TBB into namespace std.

- Added almost-C++0x-compatible std::condition_variable, plus a bunch

    of other C++0x classes required by condition_variable.

- With TBB_IMPLEMENT_CPP0X, tbb_thread can be also used as std::thread.

- task.cpp was split into several translation units to structure

    TBB scheduler sources layout. Static data layout and library

    initialization logic were also updated.

- TBB scheduler reworked to prevent master threads from stealing

    work belonging to other masters.

- Class task was extended with enqueue() method, and slightly changed

    semantics of methods spawn() and destroy(). For exact semantics,

    refer to TBB Reference manual.

- task_group_context now allows for destruction by non-owner threads.

- Added TBB_USE_EXCEPTIONS macro to control use of exceptions in TBB

    headers. It turns off (i.e. sets to 0) automatically if specified

    compiler options disable exception handling.

- TBB is enabled to run on top of Microsoft's Concurrency Runtime

    on Windows* 7 (via our worker dispatcher known as RML).

- Removed old unused busy-waiting code in concurrent_queue.

- Described the advanced build & test options in src/index.html.

- Warning level for GCC raised with -Wextra and a few other options.

- Multiple fixes and improvements in code, tests, examples, and docs.

Open-source contributions integrated:

- Xbox support by Roman Lut (Deep Shadows), though further changes are

    required to make it working; e.g. post-2.1 entry points are missing.

- "Eventcount" by Dmitry Vyukov evolved into concurrent_monitor,

    an internal class used in the implementation of concurrent_queue.

------------------------------------------------------------------------

TBB 2.2 Update 3 commercial-aligned release

Changes (w.r.t. TBB 2.2 Update 2 commercial-aligned release):

- PDF documentation updated.

Bugs fixed:

- concurrent_hash_map compatibility issue exposed on Linux in case

    two versions of the container were used by different modules.

- enforce 16 byte stack alignment for consistence with GCC; required

    to work correctly with 128-bit variables processed by SSE.

- construct() methods of allocator classes now use global operator new.

------------------------------------------------------------------------

TBB 2.2 Update 2 commercial-aligned release

Changes (w.r.t. TBB 2.2 Update 1 commercial-aligned release):

- parallel_invoke and parallel_for_each now take function objects

    by const reference, not by value.

- Building TBB with /MT is supported, to avoid dependency on particular

    versions of Visual C++* runtime DLLs. TBB DLLs built with /MT

    are located in vc_mt directory.

- Class critical_section introduced.

- Improvements in exception support: new exception classes introduced,

    all exceptions are thrown via an out-of-line internal method.

- Improvements and fixes in the TBB allocator and malloc replacement,

    including robust memory identification, and more reliable dynamic

    function substitution on Windows*.

- Method swap() added to class tbb_thread.

- Methods rehash() and bucket_count() added to concurrent_hash_map.

- Added support for Visual Studio* 2010 Beta2. No special binaries

    provided, but CRT-independent DLLs (vc_mt) should work.

- Other fixes and improvements in code, tests, examples, and docs.

Open-source contributions integrated:

- The fix to build 32-bit TBB on Mac OS* X 10.6.

- GCC-based port for SPARC Solaris by Michailo Matijkiw, with use of

    earlier work by Raf Schietekat.

Bugs fixed:

- 159 - TBB build for PowerPC* running Mac OS* X.

- 160 - IBM* Java segfault if used with TBB allocator.

- crash in concurrent_queue<char> (1616).

------------------------------------------------------------------------

TBB 2.2 Update 1 commercial-aligned release

Changes (w.r.t. TBB 2.2 commercial-aligned release):

- Incorporates all changes from open-source releases below.

- Documentation was updated.

- TBB scheduler auto-initialization now covers all possible use cases.

- concurrent_queue: made argument types of sizeof used in paddings

  consistent with those actually used.

- Memory allocator was improved: supported corner case of user's malloc

    calling scalable_malloc (non-Windows), corrected processing of

    memory allocation requests during tbb memory allocator startup

    (Linux).

- Windows malloc replacement has got better support for static objects.

- In pipeline setups that do not allow actual parallelism, execution

    by a single thread is guaranteed, idle spinning eliminated, and

    performance improved.

- RML refactoring and clean-up.

- New constructor for concurrent_hash_map allows reserving space for

    a number of items.

- Operator delete() added to the TBB exception classes.

- Lambda support was improved in parallel_reduce.

- gcc 4.3 warnings were fixed for concurrent_queue.

- Fixed possible initialization deadlock in modules using TBB entities

    during construction of global static objects.

- Copy constructor in concurrent_hash_map was fixed.

- Fixed a couple of rare crashes in the scheduler possible before

    in very specific use cases.

- Fixed a rare crash in the TBB allocator running out of memory.

- New tests were implemented, including test_lambda.cpp that checks

    support for lambda expressions.

- A few other small changes in code, tests, and documentation.

------------------------------------------------------------------------

20090809 open-source release

Changes (w.r.t. TBB 2.2 commercial-aligned release):

- Fixed known exception safety issues in concurrent_vector.

- Better concurrency of simultaneous grow requests in concurrent_vector.

- TBB allocator further improves performance of large object allocation.

- Problem with source of text relocations was fixed on Linux

- Fixed bugs related to malloc replacement under Windows

- A few other small changes in code and documentation.

------------------------------------------------------------------------

TBB 2.2 commercial-aligned release

Changes (w.r.t. TBB 2.1 U4 commercial-aligned release):

- Incorporates all changes from open-source releases below.

- Architecture folders renamed from em64t to intel64 and from itanium

    to ia64.

- Major Interface version changed from 3 to 4. Deprecated interfaces

    might be removed in future releases.

- Parallel algorithms that use partitioners have switched to use

    the auto_partitioner by default.

- Improved memory allocator performance for allocations bigger than 8K.

- Added new thread-bound filters functionality for pipeline.

- New implementation of concurrent_hash_map that improves performance

    significantly.

- A few other small changes in code and documentation.

------------------------------------------------------------------------

20090511 open-source release

Changes (w.r.t. previous open-source release):

- Basic support for MinGW32 development kit.

- Added tbb::zero_allocator class that initializes memory with zeros.

    It can be used as an adaptor to any STL-compatible allocator class.

- Added tbb::parallel_for_each template function as alias to parallel_do.

- Added more overloads for tbb::parallel_for.

- Added support for exact exception propagation (can only be used with

    compilers that support C++0x std::exception_ptr).

- tbb::atomic template class can be used with enumerations.

- mutex, recursive_mutex, spin_mutex, spin_rw_mutex classes extended

    with explicit lock/unlock methods.

- Fixed size() and grow_to_at_least() methods of tbb::concurrent_vector

    to provide space allocation guarantees. More methods added for

    compatibility with std::vector, including some from C++0x.

- Preview of a lambda-friendly interface for low-level use of tasks.

- scalable_msize function added to the scalable allocator (Windows only).

- Rationalized internal auxiliary functions for spin-waiting and backoff.

- Several tests undergo decent refactoring.

Changes affecting backward compatibility:

- Improvements in concurrent_queue, including limited API changes.

    The previous version is deprecated; its functionality is accessible

    via methods of the new tbb::concurrent_bounded_queue class.

- grow* and push_back methods of concurrent_vector changed to return

    iterators; old semantics is deprecated.

------------------------------------------------------------------------

TBB 2.1 Update 4 commercial-aligned release

Changes (w.r.t. TBB 2.1 U3 commercial-aligned release):

- Added tests for aligned memory allocations and malloc replacement.

- Several improvements for better bundling with Intel(R) C++ Compiler.

- A few other small changes in code and documentaion.

Bugs fixed:

- 150 - request to build TBB examples with debug info in release mode.

- backward compatibility issue with concurrent_queue on Windows.

- dependency on VS 2005 SP1 runtime libraries removed.

- compilation of GUI examples under Xcode* 3.1 (1577).

- On Windows, TBB allocator classes can be instantiated with const types

    for compatibility with MS implementation of STL containers (1566).

------------------------------------------------------------------------

20090313 open-source release

Changes (w.r.t. 20081109 open-source release):

- Includes all changes introduced in TBB 2.1 Update 2 & Update 3

    commercial-aligned releases (see below for details).

- Added tbb::parallel_invoke template function. It runs up to 10

    user-defined functions in parallel and waits for them to complete.

- Added a special library providing ability to replace the standard

    memory allocation routines in Microsoft* C/C++ RTL (malloc/free,

    global new/delete, etc.) with the TBB memory allocator.

    Usage details are described in include/tbb/tbbmalloc_proxy.h file.

- Task scheduler switched to use new implementation of its core

    functionality (deque based task pool, new structure of arena slots).

- Preview of Microsoft* Visual Studio* 2005 project files for

    building the library is available in build/vsproject folder.

- Added tests for aligned memory allocations and malloc replacement.

- Added parallel_for/game_of_life.net example (for Windows only)

    showing TBB usage in a .NET application.

- A number of other fixes and improvements to code, tests, makefiles,

    examples and documents.

Bugs fixed:

- The same list as in TBB 2.1 Update 4 right above.

------------------------------------------------------------------------

TBB 2.1 Update 3 commercial-aligned release

Changes (w.r.t. TBB 2.1 U2 commercial-aligned release):

- Added support for aligned allocations to the TBB memory allocator.

- Added a special library to use with LD_PRELOAD on Linux* in order to

    replace the standard memory allocation routines in C/C++ with the

    TBB memory allocator.

- Added null_mutex and null_rw_mutex: no-op classes interface-compliant

    to other TBB mutexes.

- Improved performance of parallel_sort, to close most of the serial gap

    with std::sort, and beat it on 2 and more cores.

- A few other small changes.

Bugs fixed:

- the problem where parallel_for hanged after exception throw

    if affinity_partitioner was used (1556).

- get rid of VS warnings about mbstowcs deprecation (1560),

    as well as some other warnings.

- operator== for concurrent_vector::iterator fixed to work correctly

    with different vector instances.

------------------------------------------------------------------------

TBB 2.1 Update 2 commercial-aligned release

Changes (w.r.t. TBB 2.1 U1 commercial-aligned release):

- Incorporates all open-source-release changes down to TBB 2.1 U1,

    except for:

    - 20081019 addition of enumerable_thread_specific;

- Warning level for Microsoft* Visual C++* compiler raised to /W4 /Wp64;

    warnings found on this level were cleaned or suppressed.

- Added TBB_runtime_interface_version API function.

- Added new example: pipeline/square.

- Added exception handling and cancellation support

    for parallel_do and pipeline.

- Added copy constructor and [begin,end) constructor to concurrent_queue.

- Added some support for beta version of Intel(R) Parallel Amplifier.

- Added scripts to set environment for cross-compilation of 32-bit

    applications on 64-bit Linux with Intel(R) C++ Compiler.

- Fixed semantics of concurrent_vector::clear() to not deallocate

    internal arrays. Fixed compact() to perform such deallocation later.

- Fixed the issue with atomic<T*> when T is incomplete type.

- Improved support for PowerPC* Macintosh*, including the fix

    for a bug in masked compare-and-swap reported by a customer.

- As usual, a number of other improvements everywhere.

------------------------------------------------------------------------

20081109 open-source release

Changes (w.r.t. previous open-source release):

- Added new serial out of order filter for tbb::pipeline.

- Fixed the issue with atomic<T*>::operator= reported at the forum.

- Fixed the issue with using tbb::task::self() in task destructor

    reported at the forum.

- A number of other improvements to code, tests, makefiles, examples

    and documents.

Open-source contributions integrated:

- Changes in the memory allocator were partially integrated.

------------------------------------------------------------------------

20081019 open-source release

Changes (w.r.t. previous open-source release):

- Introduced enumerable_thread_specific<T>.  This new class provides a

    wrapper around native thread local storage as well as iterators and

    ranges for accessing the thread local copies (1533).

- Improved support for Intel(R) Threading Analysis Tools

    on Intel(R) 64 architecture.

- Dependency from Microsoft* CRT was integrated to the libraries using

    manifests, to avoid issues if called from code that uses different

    version of Visual C++* runtime than the library.

- Introduced new defines TBB_USE_ASSERT, TBB_USE_DEBUG,

    TBB_USE_PERFORMANCE_WARNINGS, TBB_USE_THREADING_TOOLS.

- A number of other improvements to code, tests, makefiles, examples

    and documents.

Open-source contributions integrated:

- linker optimization: /incremental:no .

------------------------------------------------------------------------

20080925 open-source release

Changes (w.r.t. previous open-source release):

- Same fix for a memory leak in the memory allocator as in TBB 2.1 U1.

- Improved support for lambda functions.

- Fixed more concurrent_queue issues reported at the forum.

- A number of other improvements to code, tests, makefiles, examples

    and documents.

------------------------------------------------------------------------

TBB 2.1 Update 1 commercial-aligned release

Changes (w.r.t. TBB 2.1 commercial-aligned release):

- Fixed small memory leak in the memory allocator.

- Incorporates all open-source-release changes since TBB 2.1, except for:

    - 20080825 changes for parallel_do;

------------------------------------------------------------------------

20080825 open-source release

Changes (w.r.t. previous open-source release):

- Added exception handling and cancellation support for parallel_do.

- Added default HashCompare template argument for concurrent_hash_map.

- Fixed concurrent_queue.clear() issues due to incorrect assumption

    about clear() being private method.

- Added the possibility to use TBB in applications that change

    default calling conventions (Windows* only).

- Many improvements to code, tests, examples, makefiles and documents.

Bugs fixed:

- 120, 130 - memset declaration missed in concurrent_hash_map.h

------------------------------------------------------------------------

20080724 open-source release

Changes (w.r.t. previous open-source release):

- Inline assembly for atomic operations improved for gcc 4.3

- A few more improvements to the code.

------------------------------------------------------------------------

20080709 open-source release

Changes (w.r.t. previous open-source release):

- operator=() was added to the tbb_thread class according to

    the current working draft for std::thread.

- Recognizing SPARC* in makefiles for Linux* and Sun Solaris*.

Bugs fixed:

- 127 - concurrent_hash_map::range fixed to split correctly.

Open-source contributions integrated:

- fix_set_midpoint.diff by jyasskin

- SPARC* support in makefiles by Raf Schietekat

------------------------------------------------------------------------

20080622 open-source release

Changes (w.r.t. previous open-source release):

- Fixed a hang that rarely happened on Linux

    during deinitialization of the TBB scheduler.

- Improved support for Intel(R) Thread Checker.

- A few more improvements to the code.

------------------------------------------------------------------------

TBB 2.1 commercial-aligned release

Changes (w.r.t. TBB 2.0 U3 commercial-aligned release):

- All open-source-release changes down to, and including, TBB 2.0 below,

    were incorporated into this release.

------------------------------------------------------------------------

20080605 open-source release

Changes (w.r.t. previous open-source release):

- Explicit control of exported symbols by version scripts added on Linux.

- Interfaces polished for exception handling & algorithm cancellation.

- Cache behavior improvements in the scalable allocator.

- Improvements in text_filter, polygon_overlay, and other examples.

- A lot of other stability improvements in code, tests, and makefiles.

- First release where binary packages include headers/docs/examples, so

    binary packages are now self-sufficient for using TBB.

Open-source contributions integrated:

- atomics patch (partially).

- tick_count warning patch.

Bugs fixed:

- 118 - fix for boost compatibility.

- 123 - fix for tbb_machine.h.

------------------------------------------------------------------------

20080512 open-source release

Changes (w.r.t. previous open-source release):

- Fixed a problem with backward binary compatibility

    of debug Linux builds.

- Sun* Studio* support added.

- soname support added on Linux via linker script. To restore backward

    binary compatibility, *.so -> *.so.2 softlinks should be created.

- concurrent_hash_map improvements - added few new forms of insert()

    method and fixed precondition and guarantees of erase() methods.

    Added runtime warning reporting about bad hash function used for

    the container. Various improvements for performance and concurrency.

- Cancellation mechanism reworked so that it does not hurt scalability.

- Algorithm parallel_do reworked. Requirement for Body::argument_type

    definition removed, and work item argument type can be arbitrarily

    cv-qualified.

- polygon_overlay example added.

- A few more improvements to code, tests, examples and Makefiles.

Open-source contributions integrated:

- Soname support patch for Bugzilla #112.

Bugs fixed:

- 112 - fix for soname support.

------------------------------------------------------------------------

TBB 2.0 U3 commercial-aligned release (package 017, April 20, 2008)

Corresponds to commercial 019 (for Linux*, 020; for Mac OS* X, 018)

packages.

Changes (w.r.t. TBB 2.0 U2 commercial-aligned release):

- Does not contain open-source-release changes below; this release is

    only a minor update of TBB 2.0 U2.

- Removed spin-waiting in pipeline and concurrent_queue.

- A few more small bug fixes from open-source releases below.

------------------------------------------------------------------------

20080408 open-source release

Changes (w.r.t. previous open-source release):

- count_strings example reworked: new word generator implemented, hash

    function replaced, and tbb_allocator is used with std::string class.

- Static methods of spin_rw_mutex were replaced by normal member

    functions, and the class name was versioned.

- tacheon example was renamed to tachyon.

- Improved support for Intel(R) Thread Checker.

- A few more minor improvements.

Open-source contributions integrated:

- Two sets of Sun patches for IA Solaris support.

------------------------------------------------------------------------

20080402 open-source release

Changes (w.r.t. previous open-source release):

- Exception handling and cancellation support for tasks and algorithms

    fully enabled.

- Exception safety guaranties defined and fixed for all concurrent

    containers.

- User-defined memory allocator support added to all concurrent

    containers.

- Performance improvement of concurrent_hash_map, spin_rw_mutex.

- Critical fix for a rare race condition during scheduler

    initialization/de-initialization.

- New methods added for concurrent containers to be closer to STL,

    as well as automatic filters removal from pipeline

    and __TBB_AtomicAND function.

- The volatile keyword dropped from where it is not really needed.

- A few more minor improvements.

------------------------------------------------------------------------

20080319 open-source release