Here’s an efficient implementation of a handle manager (released under the usual MIT license, so go to town with it). The handle manager is implemented as an array of pointers.

HandleManager
.............\Handle.h
__MACOSX
........\HandleManager
........\.............\._Handle.h
HandleManager\HandleManager.cpp
__MACOSX\HandleManager\._HandleManager.cpp
HandleManager\HandleManager.h
__MACOSX\HandleManager\._HandleManager.h
HandleManager\HandleManager.sln
__MACOSX\HandleManager\._HandleManager.sln
HandleManager\HandleManager.vcproj
__MACOSX\HandleManager\._HandleManager.vcproj
HandleManager\Main.cpp
__MACOSX\HandleManager\._Main.cpp
HandleManager\Pow2Assert.cpp
__MACOSX\HandleManager\._Pow2Assert.cpp
HandleManager\Pow2Assert.h
__MACOSX\HandleManager\._Pow2Assert.h
HandleManager\TestHandleManager.cpp
__MACOSX\HandleManager\._TestHandleManager.cpp
HandleManager\UnitTest++
.............\..........\COPYING
__MACOSX\HandleManager\UnitTest++
........\.............\..........\._COPYING
HandleManager\UnitTest++\docs
.............\..........\....\UnitTest++.html
__MACOSX\HandleManager\UnitTest++\docs
........\.............\..........\....\._UnitTest++.html
........\.............\..........\._docs
HandleManager\UnitTest++\Makefile
__MACOSX\HandleManager\UnitTest++\._Makefile
HandleManager\UnitTest++\README
__MACOSX\HandleManager\UnitTest++\._README
HandleManager\UnitTest++\src
.............\..........\...\AssertException.cpp
__MACOSX\HandleManager\UnitTest++\src
........\.............\..........\...\._AssertException.cpp
HandleManager\UnitTest++\src\AssertException.h
__MACOSX\HandleManager\UnitTest++\src\._AssertException.h
HandleManager\UnitTest++\src\CheckMacros.h
__MACOSX\HandleManager\UnitTest++\src\._CheckMacros.h
HandleManager\UnitTest++\src\Checks.cpp
__MACOSX\HandleManager\UnitTest++\src\._Checks.cpp
HandleManager\UnitTest++\src\Checks.h
__MACOSX\HandleManager\UnitTest++\src\._Checks.h
HandleManager\UnitTest++\src\Config.h
__MACOSX\HandleManager\UnitTest++\src\._Config.h
HandleManager\UnitTest++\src\DeferredTestReporter.cpp
__MACOSX\HandleManager\UnitTest++\src\._DeferredTestReporter.cpp
HandleManager\UnitTest++\src\DeferredTestReporter.h
__MACOSX\HandleManager\UnitTest++\src\._DeferredTestReporter.h
HandleManager\UnitTest++\src\DeferredTestResult.cpp
__MACOSX\HandleManager\UnitTest++\src\._DeferredTestResult.cpp
HandleManager\UnitTest++\src\DeferredTestResult.h
__MACOSX\HandleManager\UnitTest++\src\._DeferredTestResult.h
HandleManager\UnitTest++\src\ExecuteTest.h
__MACOSX\HandleManager\UnitTest++\src\._ExecuteTest.h
HandleManager\UnitTest++\src\MemoryOutStream.cpp
__MACOSX\HandleManager\UnitTest++\src\._MemoryOutStream.cpp
HandleManager\UnitTest++\src\MemoryOutStream.h
__MACOSX\HandleManager\UnitTest++\src\._MemoryOutStream.h
HandleManager\UnitTest++\src\Posix
.............\..........\...\.....\SignalTranslator.cpp
__MACOSX\HandleManager\UnitTest++\src\Posix
........\.............\..........\...\.....\._SignalTranslator.cpp
HandleManager\UnitTest++\src\Posix\SignalTranslator.h
__MACOSX\HandleManager\UnitTest++\src\Posix\._SignalTranslator.h
HandleManager\UnitTest++\src\Posix\TimeHelpers.cpp
__MACOSX\HandleManager\UnitTest++\src\Posix\._TimeHelpers.cpp
HandleManager\UnitTest++\src\Posix\TimeHelpers.h
__MACOSX\HandleManager\UnitTest++\src\Posix\._TimeHelpers.h
........\.............\..........\...\._Posix
HandleManager\UnitTest++\src\ReportAssert.cpp
__MACOSX\HandleManager\UnitTest++\src\._ReportAssert.cpp
HandleManager\UnitTest++\src\ReportAssert.h
__MACOSX\HandleManager\UnitTest++\src\._ReportAssert.h
HandleManager\UnitTest++\src\Test.cpp
__MACOSX\HandleManager\UnitTest++\src\._Test.cpp
HandleManager\UnitTest++\src\Test.h
__MACOSX\HandleManager\UnitTest++\src\._Test.h
HandleManager\UnitTest++\src\TestDetails.cpp
__MACOSX\HandleManager\UnitTest++\src\._TestDetails.cpp
HandleManager\UnitTest++\src\TestDetails.h
__MACOSX\HandleManager\UnitTest++\src\._TestDetails.h
HandleManager\UnitTest++\src\TestList.cpp
__MACOSX\HandleManager\UnitTest++\src\._TestList.cpp
HandleManager\UnitTest++\src\TestList.h
__MACOSX\HandleManager\UnitTest++\src\._TestList.h
HandleManager\UnitTest++\src\TestMacros.h
__MACOSX\HandleManager\UnitTest++\src\._TestMacros.h
HandleManager\UnitTest++\src\TestReporter.cpp
__MACOSX\H

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