C++17 implementation of an object pool pattern
This code is a fork & extension from the following code:
http://media.wiley.com/product_ancillary/50/11188580/DOWNLOAD/c25_code.zip
From the original source file:
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Provides an object pool that can be used with any class that provides a default constructor.
The object pool constructor creates a pool of objects, which it hands out to clients when requested via the acquireObject() method. acquireObject() returns an Object which is a std::shared_ptr with a custom deleter that automatically puts the object back into the object pool when the shared_ptr is destroyed and its reference reaches 0.
The constructor and destructor on each object in the pool will be called only once each for the lifetime of the program, not once per acquisition and release.
The primary use of an object pool is to avoid creating and deleting objects repeatedly. The object pool is most suited to applications that use large numbers of objects with expensive constructors for short periods of time, if a profiler tells you that allocating and deallocating these objects is a bottleneck.
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It is also possible to create an object pool providing a non-default ctor for the objects that are registered and used at any new allocation when the pool is empty
Objects returned to the pool are reset by default.
See: https://en.wikipedia.org/wiki/Object_pool_pattern
See the unit tests for examples of use.
cmake is used to compile the sources.
The default compiler used is clang++-9.0.0.
The cmake files compile with -std=c++17.
The unit tests are implemented in googletest: be sure you have installed googletest to compile.
$ git clone https://github.com/massimo-marino/object-pool.git
$ cd object-pool
$ mkdir build
$ cd build
$ cmake ..
$ makeUnit tests are implemented with googletest.
Install googletest to compile and run them.
$ cd src/unitTests
$ ./unitTestsRemove -DDO_LOGS from CMAKE_CXX_FLAGS in the cmake file to see no logs printed at run-time.
$ cd ../example
$ ./object-pool-example