Re: [boost] Re: shifted_ptr<> w/ lock mechanism

From: Peter Dimov (pdimov_at_[hidden])
Date: 2003-01-30 12:17:08

From: "David Abrahams" <dave_at_[hidden]>
> "Peter Dimov" <pdimov_at_[hidden]> writes:
>
> > There is a test in libs/smart_ptr/test called shared_ptr_alloc_test.cpp
that
> > you can use.
>
> Your test doesn't seem to terminate for me in a reasonable amount of
> time (minutes) in any configuration.

You might need to use a lower n. Here's what I get (randomly choosing
g++/mingw):

GNU C++ version 2.95.3-6 (mingw special)
Win32
SGI standard library
BOOST_HAS_THREADS: (not defined)
BOOST_SP_USE_STD_ALLOCATOR: (not defined)
BOOST_SP_USE_QUICK_ALLOCATOR: (not defined)
1048576 shared_ptr<int> allocations + deallocations:
   1.582 seconds.
   1.713 seconds.
   1.702 seconds.
1048576 shared_ptr<X> allocations + deallocations:
   1.151 seconds.
   1.593 seconds.
   1.603 seconds.
1048576 shared_ptr<Y> allocations + deallocations:
   1.652 seconds.
   1.071 seconds.
   1.072 seconds.
1048576 shared_ptr<Z> allocations + deallocations:
   1.713 seconds.
   1.732 seconds.
   1.722 seconds.

GNU C++ version 2.95.3-6 (mingw special)
Win32
SGI standard library
BOOST_HAS_THREADS: (not defined)
BOOST_SP_USE_STD_ALLOCATOR: (not defined)
BOOST_SP_USE_QUICK_ALLOCATOR: (defined)
1048576 shared_ptr<int> allocations + deallocations:
   1.151 seconds.
   0.961 seconds.
   0.931 seconds.
1048576 shared_ptr<X> allocations + deallocations:
   0.571 seconds.
   0.551 seconds.
   0.571 seconds.
1048576 shared_ptr<Y> allocations + deallocations:
   0.761 seconds.
   0.55 seconds.
   0.54 seconds.
1048576 shared_ptr<Z> allocations + deallocations:
   0.941 seconds.
   0.921 seconds.
   0.951 seconds.