See unit test file test.cc for examples.

Used for executing child processes. Also supports async execution where the invoking process can continue executing while the executed rocess runs. Note when using this mode a shared_ptr to Process is required to ensure the child death handler can correctly handle cases where the original reference no longer exists. In the async case (particularly when using multiple threads) it is also recommended that the child handler is set before creating processes (the handler will automatically be set in async_execute if it has not yet been set). For example

posix_util::Process::set_child_death_handler();
std::shared_ptr<posix_util::Process> ptester_process =
               std::make_shared<posix_util::Process>("./cmake-build-debug/tester");
...
...
ptester_process->async_execute(args, ptester_process, true, false);               

Abstracts a named Posix semaphore.

Abstracts temporary file creation