- signal_emit#<>: New templates replacing signal#<>::caller. The purpose

2003-03-07  Martin Schulze  <MHL.Schulze@t-online.de>

	* sigc++/signal.{cc,h.m4}:
	- signal_emit#<>: New templates replacing signal#<>::caller.
	  The purpose of these templates is implementing the emit
	  function and optimizing signal emission for the case that
	  no accumulator is used via template specializations.
	- default_accumulator<>: Removed. The default for T_accumulator
	  in signal#<> now is nil. An example how to use accumulators
	  is available in tests/test_accumulator.cc.
	- signal_{base,impl}: Move the implementation of signal_base's
	  interface to signal_impl. An object of this class is
	  dynamically allocated when first connecting a closure to
	  the signal. This drastically reduces the size of empty signals
	  and allows for future addition of a reference counter to make
	  it safe to delete a signal during emission.
	- Directly work on closure_rep during signal emission. This
	  seems to be quicker than using the closure templates.
	- Document the classes. Restructure the header file a bit.

	* sigc++/functors/closure.h.m4: Make closure_base::rep_ data
	member public, so that signal emission can directly work on it.

	* tests/test_size.cc: Add an entry for signal_impl.

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/test_size.cc b/tests/test_size.cc
index 02371f8..ad08b82 100644
--- a/tests/test_size.cc
+++ b/tests/test_size.cc
@@ -36,4 +36,5 @@ int main()
    cout << "  closure_rep:            " << sizeof(internal::closure_rep) << endl;
    cout << "  typed_closure_rep<mem_functor0<void,A> >: "
         << sizeof(internal::typed_closure_rep<mem_functor0<void,A> >) << endl;
+   cout << "  signal_impl:            " << sizeof(sigc::internal::signal_impl) << endl;
 }