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[Gnash-commit] gnash/cygnal/IO .cvsignore Buffer.hpp IO_Device...
|
From: |
Eric Hughes |
|
Subject: |
[Gnash-commit] gnash/cygnal/IO .cvsignore Buffer.hpp IO_Device... |
|
Date: |
Thu, 19 Jul 2007 02:23:41 +0000 |
CVSROOT: /sources/gnash
Module name: gnash
Changes by: Eric Hughes <eh9> 07/07/19 02:23:41
Modified files:
cygnal/IO : .cvsignore Buffer.hpp IO_Device.hpp
IO_Generator.cpp IO_Generator.hpp
cygnal/IO/test_support: Null_Device.hpp Null_Filter.hpp
String_Generator.cpp
String_Generator.hpp
cygnal/IO/unit_tests: Test_Service.cpp
Added files:
cygnal/IO : Change_Log.txt IO.doxygen.txt
cygnal/IO/test_support: .cvsignore
cygnal/IO/unit_tests: .cvsignore
Log message:
CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/.cvsignore?cvsroot=gnash&r1=1.1&r2=1.2
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/Buffer.hpp?cvsroot=gnash&r1=1.2&r2=1.3
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/IO_Device.hpp?cvsroot=gnash&r1=1.3&r2=1.4
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/IO_Generator.cpp?cvsroot=gnash&r1=1.3&r2=1.4
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/IO_Generator.hpp?cvsroot=gnash&r1=1.3&r2=1.4
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/Change_Log.txt?cvsroot=gnash&rev=1.1
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/IO.doxygen.txt?cvsroot=gnash&rev=1.1
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/test_support/Null_Device.hpp?cvsroot=gnash&r1=1.3&r2=1.4
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/test_support/Null_Filter.hpp?cvsroot=gnash&r1=1.3&r2=1.4
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/test_support/String_Generator.cpp?cvsroot=gnash&r1=1.3&r2=1.4
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/test_support/String_Generator.hpp?cvsroot=gnash&r1=1.3&r2=1.4
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/test_support/.cvsignore?cvsroot=gnash&rev=1.1
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/unit_tests/Test_Service.cpp?cvsroot=gnash&r1=1.3&r2=1.4
http://cvs.savannah.gnu.org/viewcvs/gnash/cygnal/IO/unit_tests/.cvsignore?cvsroot=gnash&rev=1.1
Patches:
Index: .cvsignore
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/.cvsignore,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -b -r1.1 -r1.2
--- .cvsignore 17 Jul 2007 19:19:01 -0000 1.1
+++ .cvsignore 19 Jul 2007 02:23:40 -0000 1.2
@@ -1,3 +1,4 @@
+.svn
.deps
.libs
Makefile
Index: Buffer.hpp
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/Buffer.hpp,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -b -r1.2 -r1.3
--- Buffer.hpp 1 Jul 2007 10:53:53 -0000 1.2
+++ Buffer.hpp 19 Jul 2007 02:23:40 -0000 1.3
@@ -85,6 +85,7 @@
//-------------------------
/** \class Segment
+ * \brief The unit of memory for a buffer, a single contiguous
range of memory.
*/
template< class Ch >
struct Segment
@@ -248,6 +249,9 @@
//--------------------------------------------------
// Basic_Segment_Iterator_Base
//--------------------------------------------------
+ /** \class Basic_Segment_Iterator_Base
+ * \brief Base class for segment iterators, whose differences are
const-vs.-non-const access.
+ */
template< class Ch >
class Basic_Segment_Iterator_Base
{
@@ -393,7 +397,7 @@
// E_AV_Buffer
//--------------------------------------------------
/** \class E_AV_Buffer_Base
- * \brief
+ * \brief Base class for E_AV_Buffer containing everything not
dependent on template parameters, which is almost everything.
*/
template< class Ch = char >
class E_AV_Buffer_Base
@@ -474,6 +478,9 @@
//--------------------------------------------------
// Basic_Buffer
//--------------------------------------------------
+ /** \class Basic_Buffer
+ * \brief A wrapper around an Abstract_Buffer.
+ */
template< class Ch >
class Basic_Buffer
{
Index: IO_Device.hpp
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/IO_Device.hpp,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -b -r1.3 -r1.4
--- IO_Device.hpp 10 Jul 2007 14:09:10 -0000 1.3
+++ IO_Device.hpp 19 Jul 2007 02:23:40 -0000 1.4
@@ -80,6 +80,8 @@
//-------------------------
/** \class Source
+ * \brief A stream source with an asynchronous interface.
+ * Abstract base class of an asynchronous I/O device.
*/
class Source
: public ACT::autonomous_act
@@ -98,10 +100,10 @@
//-------------------------
/** \class Sink
- * \brief Abstract base class of an asynchronous I/O device that
acts as a sink.
- * A sink is also an action, in this case a write action to the
device it represents.
+ * \brief A stream sink with an asynchronous interface.
+ * Abstract base class of an asynchronous I/O device.
+ *
*
- * The write action
*/
class Sink
: public ACT::autonomous_act
@@ -121,6 +123,9 @@
//-------------------------
// SSource
//-------------------------
+ /** \class SSource
+ * \brief A renaming wrapper around Source to allow two actions
within Device.
+ */
class SSource
: public Source
{
@@ -155,7 +160,12 @@
//-------------------------
// SSink
//-------------------------
- class SSink : public Sink {
+ /** \class SSink
+ * \brief A renaming wrapper around Sink to allow two actions
within Device.
+ */
+ class SSink
+ : public Sink
+ {
protected:
virtual ACT::ACT_State sink_run( ACT::wakeup_listener * ) =0 ;
inline ACT::ACT_State run( ACT::wakeup_listener * w ) { return
sink_run( w ) ; }
@@ -223,6 +233,8 @@
} ;
//-------------------------
+ /** \b Obsolescent. Adapter for old-style sources.
+ */
template< class Oldsource, class Action >
class adapter_for_old_source
: public Source
Index: IO_Generator.cpp
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/IO_Generator.cpp,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -b -r1.3 -r1.4
--- IO_Generator.cpp 10 Jul 2007 14:09:10 -0000 1.3
+++ IO_Generator.cpp 19 Jul 2007 02:23:40 -0000 1.4
@@ -21,33 +21,32 @@
namespace IO {
//-------------------------
- Device_Adapter::
- Device_Adapter( Device_Generator & x, Behavior_Factory & y )
+ IO_Generator::
+ IO_Generator( Old_Device_Generator & x, Behavior_Factory & y )
: the_generator( x ),
- the_behavior_factory( y )
+ the_behavior_factory( y ),
+ complete( false )
{}
//-------------------------
- ACT::ACT_State
- Device_Adapter::
- run( ACT::wakeup_listener * w )
+ shared_ptr< ACT::basic_act >
+ IO_Generator::
+ next_action( ACT::wakeup_listener * w )
{
+ if ( ! complete ) {
the_generator( w ) ;
- if ( the_generator.bad() ) return set_bad() ;
- if ( the_generator.working() ) return set_ready() ;
+ if ( the_generator.completed() ) {
// Assert the_generator has a result ready for us.
-
- the_result = the_behavior_factory( the_generator.result() ) ;
- return set_completed() ;
+ return the_behavior_factory(
the_generator.result() ) ;
}
+ // Assert no result is ready; return must be null
- //-------------------------
- ACT::act
- Device_Adapter::
- result()
- {
- return the_result ;
+ if ( the_generator.bad() ) {
+ // A good generator is required for continued
operation.
+ set_completed() ;
+ }
+ }
+ return shared_ptr< ACT::basic_act >() ;
}
-
} // end namespace IO
Index: IO_Generator.hpp
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/IO_Generator.hpp,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -b -r1.3 -r1.4
--- IO_Generator.hpp 10 Jul 2007 14:09:10 -0000 1.3
+++ IO_Generator.hpp 19 Jul 2007 02:23:40 -0000 1.4
@@ -30,7 +30,8 @@
namespace IO {
//-------------------------
/** \class Behavior
- * \brief
+ * \brief A behavior is a task whose constructor parameter is a
Device.
+ * When the Device is an internet socket, this task acts
as a protocol handler.
*/
class Behavior
: public ACT::autonomous_act
@@ -49,8 +50,25 @@
typedef shared_ptr< ACT::autonomous_act > Behavior_Factory( shared_ptr<
Device > x ) ;
//-------------------------
+ /** \class Old_Device_Generator
+ * \brief Legacy generator. On its way out.
+ *
+ */
+ class Old_Device_Generator
+ : public ACT::autonomous_act
+ {
+ public:
+
+ ///
+ virtual shared_ptr< IO::Device > result() =0 ;
+
+ void reset() {} ;
+ } ;
+
+ //-------------------------
/** \class Device_Generator
- * \brief A generator is an ACT whose result is a Device.
+ * \brief A device generator is an input stream of devices.
+ * Its interface is modeled after ACT::Generator.
*
* The prototypical Generator is a bound listening socket.
* A successful call to accept(), yielding a new connection,
triggers completion of the action.
@@ -60,42 +78,64 @@
* Subsequent devices will be made available after a reset and
then another activation.
*/
class Device_Generator
- : public ACT::autonomous_act
{
public:
- ///
- virtual shared_ptr< IO::Device > result() =0 ;
-
- void reset() {} ;
+ /// Next device in the generator stream.
+ /// \post
+ /// - return is a null shared pointer at the current end of the
stream.
+ virtual shared_ptr< IO::Device > next_device() =0 ;
+
+ /// Query whether generator will ever return non-null again.
+ /// See also ACT::Generator::completed.
+ virtual bool completed() { return false ; }
+
+ /// Order a shutdown.
+ /// See also ACT::Generator::shutdown.
+ virtual void shutdown() =0 ;
} ;
//-------------------------
- /** \class Device_Adapter
+ /** \class IO_Generator
+ * \brief A device adapter converts a device generator into an
action generator.
+ * It does so by passing a device from our upstream
generator to a behavior factory.
+ * The result is the downstream result of our activity as
an action generator.
+ *
+ * To use this class, create an instance and pass it to the
constructor of ACT::Service.
+ * The Service class provides for control under a scheduler.
+ * The wakeup_listener function provided to next_action is that of
this Service instance.
+ *
+ * \invariant
+ * - the_generator.bad() implies complete
*/
- class Device_Adapter
- : public ACT::Obsolete_Generator // will rewrite
as deriving from ACT::Generator
+ class IO_Generator
+ : public ACT::Generator
{
- /// We use shared_ptr here
- Device_Generator & the_generator ;
+ /// Our device generator provides us a stream of device.
+ Old_Device_Generator & the_generator ;
- ///
+ /// Our behavior factory provices bind-conversion of devices to
actions.
Behavior_Factory & the_behavior_factory ;
- shared_ptr< ACT::autonomous_act > the_result ;
+ /// Operation of this generator is complete, initially false
except for null generators.
+ bool complete ;
- public:
- ///
- Device_Adapter( Device_Generator & x, Behavior_Factory & y ) ;
+ /// Since completion is one-way, perhaps this belongs in the
base class.
+ inline void set_completed() { complete = true ; }
- ///
- ACT::ACT_State run( ACT::wakeup_listener * w ) ;
+ /// Overrides ACT::Generator::completed
+ bool completed() { return complete ; }
- ///
- ACT::act result() ;
+ public:
+ /// Ordinary constructor
+ IO_Generator( Old_Device_Generator & x, Behavior_Factory & y ) ;
- } ;
+ /// Implements of ACT::Generator::next_action
+ virtual shared_ptr< ACT::basic_act > next_action(
ACT::wakeup_listener * ) =0 ;
+ /// Implements of ACT::Generator::shutdown
+ void shutdown() ;
+ } ;
} // end namespace IO
Index: test_support/Null_Device.hpp
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/test_support/Null_Device.hpp,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -b -r1.3 -r1.4
--- test_support/Null_Device.hpp 10 Jul 2007 14:09:10 -0000 1.3
+++ test_support/Null_Device.hpp 19 Jul 2007 02:23:41 -0000 1.4
@@ -28,6 +28,9 @@
namespace IO {
//-------------------------
+ /** \class Null_Source
+ * \brief An eternal source of empty buffers.
+ */
class Null_Source
: public Source
{
@@ -49,6 +52,9 @@
} ;
//-------------------------
+ /** \class Null_Sink
+ * \brief A sink which is also the bit bucket.
+ */
class Null_Sink
: public Sink
{
@@ -74,6 +80,9 @@
} ;
//-------------------------
+ /** \class Null_Device
+ * \brief A device that never has input and write all output to
the bit bucket.
+ */
class Null_Device
: public Device
{
Index: test_support/Null_Filter.hpp
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/test_support/Null_Filter.hpp,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -b -r1.3 -r1.4
--- test_support/Null_Filter.hpp 10 Jul 2007 14:09:10 -0000 1.3
+++ test_support/Null_Filter.hpp 19 Jul 2007 02:23:41 -0000 1.4
@@ -30,6 +30,8 @@
//-------------------------
/** \class null_read_filter
+ * \brief Should probably be named identity_read_filter.
+ * A pass-through for read actions.
*/
class null_read_filter
: public Source
Index: test_support/String_Generator.cpp
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/test_support/String_Generator.cpp,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -b -r1.3 -r1.4
--- test_support/String_Generator.cpp 10 Jul 2007 14:09:10 -0000 1.3
+++ test_support/String_Generator.cpp 19 Jul 2007 02:23:41 -0000 1.4
@@ -21,15 +21,65 @@
#include "String_Device.hpp"
namespace IO {
-
String_Generator::
String_Generator()
- : the_result( new String_Device( "" ) )
+ : complete( false )
{
}
String_Generator::
String_Generator( std::string initial )
+ : complete( false )
+ {
+ add_source( initial ) ;
+ }
+
+ void
+ String_Generator::
+ add_source( std::string x )
+ {
+ if ( complete ) {
+ throw std::runtime_error( "May not add sources after
shutdown" ) ;
+ }
+ the_list.push_front( x ) ;
+ }
+
+ void
+ String_Generator::
+ shutdown()
+ {
+ complete = true ;
+ }
+
+ bool
+ String_Generator::
+ completed()
+ {
+ return complete ;
+ }
+
+ shared_ptr< IO::Device >
+ String_Generator::
+ next_device()
+ {
+ if ( the_list.empty() ) return shared_ptr< IO::Device >() ;
+ shared_ptr< IO::Device > x( new String_Device( the_list.back()
) ) ;
+ the_list.pop_back() ;
+ return x ;
+ }
+
+} // end namespace IO
+
+namespace IO {
+
+ Old_String_Generator::
+ Old_String_Generator()
+ : the_result( new String_Device( "" ) )
+ {
+ }
+
+ Old_String_Generator::
+ Old_String_Generator( std::string initial )
: the_result( new String_Device( "" ) )
{
add_source( initial ) ;
@@ -37,7 +87,7 @@
///
ACT::ACT_State
- String_Generator::
+ Old_String_Generator::
run( ACT::wakeup_listener * )
{
if ( the_queue.empty() ) return ACT::ACT_State(
ACT::ACT_State::Ready ) ;
@@ -47,21 +97,21 @@
}
void
- String_Generator::
+ Old_String_Generator::
add_source( std::string x )
{
the_queue.push( x ) ;
}
shared_ptr< IO::Device >
- String_Generator::
+ Old_String_Generator::
result()
{
return the_result ;
}
void
- String_Generator::
+ Old_String_Generator::
reset()
{
if ( bad() ) return ;
Index: test_support/String_Generator.hpp
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/test_support/String_Generator.hpp,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -b -r1.3 -r1.4
--- test_support/String_Generator.hpp 10 Jul 2007 14:09:10 -0000 1.3
+++ test_support/String_Generator.hpp 19 Jul 2007 02:23:41 -0000 1.4
@@ -26,18 +26,23 @@
#include <string>
#include <queue>
+#include <list>
#include <boost/shared_ptr.hpp>
namespace IO {
//-------------------------
+ /** \class String_Generator
+ * \brief A generator of string devices.
+ */
class String_Generator
: public Device_Generator
{
///
- std::queue< std::string > the_queue ;
+ std::list< std::string > the_list ;
- shared_ptr< IO::Device > the_result ;
+ /// Received shutdown?
+ bool complete ;
public:
///
@@ -49,6 +54,38 @@
///
void add_source( std::string x ) ;
+ /// Implements Device_Generator::next_device.
+ shared_ptr< IO::Device > next_device() ;
+
+ /// Implements Device_Generator::shutdown.
+ void shutdown() ;
+
+ /// Implements Device_Generator::completed.
+ bool completed() ;
+ } ;
+
+ //-------------------------
+ /** \class Old_String_Generator
+ * \brief A legacy generator of string devices.
+ */
+ class Old_String_Generator
+ : public Old_Device_Generator
+ {
+ ///
+ std::queue< std::string > the_queue ;
+
+ shared_ptr< IO::Device > the_result ;
+
+ public:
+ ///
+ Old_String_Generator() ;
+
+ ///
+ Old_String_Generator( std::string initial ) ;
+
+ ///
+ void add_source( std::string x ) ;
+
///
ACT::ACT_State run( ACT::wakeup_listener * ) ;
Index: unit_tests/Test_Service.cpp
===================================================================
RCS file: /sources/gnash/gnash/cygnal/IO/unit_tests/Test_Service.cpp,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -b -r1.3 -r1.4
--- unit_tests/Test_Service.cpp 10 Jul 2007 14:09:11 -0000 1.3
+++ unit_tests/Test_Service.cpp 19 Jul 2007 02:23:41 -0000 1.4
@@ -22,6 +22,12 @@
#include "../test_support/String_Generator.hpp"
#include "ACT/Service.hpp"
+//-------------------------
+/** \brief A behavior that does nothing.
+ *
+ * This is different from ACT::no_action only in that it derives from
IO::Behavior.
+ * Well, it also has no tracker, but that's incidental.
+ */
class Null_Behavior
: public IO::Behavior
{
@@ -37,9 +43,51 @@
return shared_ptr< ACT::autonomous_act >( new Null_Behavior() ) ;
}
+//-------------------------
BOOST_AUTO_UNIT_TEST( Generator_Basic )
{
IO::String_Generator generator( "a" ) ;
+
+ BOOST_CHECK( ! generator.completed() ) ;
+ shared_ptr< IO::Device > device( generator.next_device() ) ;
+ BOOST_CHECK_MESSAGE( ! ! device, "Device should not be null." ) ;
+ // Check contents of source here. Should be "a".
+
+ // Internal queue is empty.
+ BOOST_CHECK( ! generator.completed() ) ;
+ device = generator.next_device() ;
+ // Left negation operator is on shared_ptr, right negation operator is
on bool.
+ BOOST_CHECK_MESSAGE( ! device, "Saw non-null device pointer where null
expected." ) ;
+ BOOST_CHECK( ! generator.completed() ) ;
+
+ // Add two more sources.
+ generator.add_source( "b" ) ;
+ generator.add_source( "c" ) ;
+
+ BOOST_CHECK( ! generator.completed() ) ;
+ device = generator.next_device() ;
+ BOOST_CHECK_MESSAGE( ! ! device, "Device should not be null." ) ;
+ // Check contents of source here. Should be "b".
+
+ BOOST_CHECK( ! generator.completed() ) ;
+ device = generator.next_device() ;
+ BOOST_CHECK_MESSAGE( ! ! device, "Device should not be null." ) ;
+ // Check contents of source here. Should be "c".
+
+ // Internal queue is empty again.
+ BOOST_CHECK( ! generator.completed() ) ;
+ device = generator.next_device() ;
+ BOOST_CHECK_MESSAGE( ! device, "Saw non-null device pointer where null
expected." ) ;
+ BOOST_CHECK( ! generator.completed() ) ;
+
+ // Shut down
+ generator.shutdown() ;
+ BOOST_CHECK( generator.completed() ) ;
+}
+
+BOOST_AUTO_UNIT_TEST( Generator_Basic_Legacy )
+{
+ IO::Old_String_Generator generator( "a" ) ;
generator.add_source( "b" ) ;
generator.add_source( "c" ) ;
@@ -72,7 +120,7 @@
BOOST_AUTO_UNIT_TEST( Service_Basic )
{
- IO::String_Generator x( "" ) ;
+ IO::Old_String_Generator x( "" ) ;
x.add_source( "" ) ;
x.add_source( "" ) ;
Index: Change_Log.txt
===================================================================
RCS file: Change_Log.txt
diff -N Change_Log.txt
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ Change_Log.txt 19 Jul 2007 02:23:40 -0000 1.1
@@ -0,0 +1,16 @@
+Change Log for GNU Cygnal, Module IO
+====================================
+
+2007-07-18 Eric Hughes <address@hidden>
+ * IO_Generator.hpp: New interface class Device_Generator.
+ * test_support/String_Generator.[hc]pp: New class String_Generator,
deriving from Device_Generator.
+ * unit_tests/Test_Service.cpp: New test Generator_Basic, exercising new
String_Generator.
+
+2007-07-17 Eric Hughes <address@hidden>
+ * ../ACT/Service.hpp: Removed class Obsolete_Generator, only used here
in IO.
+ * IO_Generator.[hc]pp: Renamed Device_Generator to
Old_Device_Generator. Device_Generator doesn't need to be an ACT.
+ * test_support/String_Generator.[hc]pp, unit_tests/Test_Service.cpp:
Renamed String_Generator to Old_String_Generator.
+
+2007-07-12 Eric Hughes <address@hidden>
+ * IO_Generator.[hc]pp: Renamed Device_Adapter to IO_Generator. Rewrote
it to derive from ACT::Generator.
+ *
Buffer.hpp,IO_Device.hpp,test_support/{Null_Device.hpp,Null_Filter.hpp,String_Generator.hpp},unit_tests/Test_Service.cpp:
New doxygen comments
\ No newline at end of file
Index: IO.doxygen.txt
===================================================================
RCS file: IO.doxygen.txt
diff -N IO.doxygen.txt
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ IO.doxygen.txt 19 Jul 2007 02:23:41 -0000 1.1
@@ -0,0 +1,46 @@
+/**
+
+\page IO Module IO: Asynchronous I/O
+
+ The ACT environment has unique interface requirements for the control
of asynchronous I/O.
+ The ordinary stream abstraction, for example, assumes full information
about data availability,
+ which is either present or at end-of-file.
+ For an asynchronous stream, however, there's a third state of no
current information,
+ frequently indicated by the return value "would block".
+ This distinction is at the core of the present module.
+
+\section s_IO_Elements Elements of the IO Module
+ - \b Devices.
+ The central abstractions of this module are the unidirectional
Source and Sink classes which combine to form a Device.
+ A Device instance, in this module, refers to a connection
(which might be used as a stream),
+ rather than to any specific hardware device.
+ In other words, it's a view of a device ignoring multiplexing,
+ as if its user had exclusive access to it and were
using it for just one connection.
+ These are abstract interface classes, rather than simply model
specifications,
+ in order to allow a Device user to operate with
multiple Devices.
+ The immediate motivation for this choice is to enable automatic
test of Device users.
+ A string device is present for this purpose.
+
+ - \b Device Generators and \b Behaviors.
+ Writing an internet server entails requests and responses over
a network connection.
+ This module splits these into two concerns: generators and
behaviors.
+ A generator encapsulates a facility that makes new connections,
such as a server socket listening on a well-known port.
+ A behavior is the request/response interaction independent of
the kind of I/O present.
+ A generator is a producer of Device instances; a behavior is
their consumer.
+ Combining a generator and a kind of behavior yields a task
generator that can initialize a service (see ACT::Service).
+
+ - \b Buffers.
+ The essence of efficient network I/O uses two elements: block
interface rather than character interface,
+ and a zero-copy discipline that necessitates
scatter-gather primitives.
+ The present buffer combines a common way of interacting with
memory chopped up into segments,
+ each of which is a single continguous block of memory.
+ There are two ways of viewing this memory: either as a sequence
of segments or as a sequence of characters.
+ Buffers provide iterators to both.
+
+ - \b Streams.
+ A stream, in the present model, is primarily a means of using
buffered input.
+ The present stream abstraction does not hide the
segment-sequence underpinnings,
+ but rather handles issues arising from asynchronous
control,
+ particular obtaining new input for an incomplete scan
or parse.
+
+ */
Index: test_support/.cvsignore
===================================================================
RCS file: test_support/.cvsignore
diff -N test_support/.cvsignore
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ test_support/.cvsignore 19 Jul 2007 02:23:41 -0000 1.1
@@ -0,0 +1,10 @@
+.svn
+.deps
+.libs
+Makefile
+Makefile.in
+*.lo
+*.la
+gnash.log
+gnash.sum
+site.exp
Index: unit_tests/.cvsignore
===================================================================
RCS file: unit_tests/.cvsignore
diff -N unit_tests/.cvsignore
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ unit_tests/.cvsignore 19 Jul 2007 02:23:41 -0000 1.1
@@ -0,0 +1,10 @@
+.svn
+.deps
+.libs
+Makefile
+Makefile.in
+*.lo
+*.la
+gnash.log
+gnash.sum
+site.exp
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