File: ChangeLog-1994

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Fri Dec 23 01:50:50 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/ASX: Changed the behavior of Map_Manager::Map_Manager()
          to allocate a default-sized buffer.

        * libsrc/Reactor/Reactor.C (dispatch): Made the poll-based Reactor
          smarter about detecting POLLERR error conditions.  When POLLERR
          is detected, the Reactor now shutdown down that fd...

Wed Dec 21 18:29:15 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/IPC_SAP/SPIPE_SAP: Changed the name of class SPIPE_Msg to
          SPIPE_IO to reflect the fact that I/O over named pipes need not
          be message-oriented...

        * Changed all occurrences of {SOCK,TLI,SPIPE}_Listener to
          {SOCK,TLI,SPIPE}_Acceptor.  This is a more accurate name for the
          function these classes perform.  In addition, it is easier to
          explain in the context of the Acceptor and Connector patterns.
          Note that the *.h files are also changed, as well.

        * Changed the implementation of {SOCK,TLI,SPIPE}_SAP so that there
          is now a *_Connector class to go along with the *_Acceptor
          class.  The *_Connector is a factory that produces *_Stream
          objects *actively*, in a similar way to how the *_Acceptor is a
          factory that produces *_Stream objects *passively*.  This makes
          everything much more orthogonal, though it will break existing
          code...  The easiest way to fix existing code is to do the
          following:
          
          1. Find places in the code that define objects of 
             type SOCK_Stream, LSOCK_Stream, TLI_Stream,
             or SPIPE_Msg (now called SPIPE_IO).
          
          2. Replace #include "SOCK_Stream.h" with
             #include "SOCK_Connector.h" (or whatever
             C++ wrapper you have).

          3. Replace definitions of the form:

          INET_Addr addr (port, host);
          SOCK_Stream foo (addr);
          
          with
          
          INET_Addr addr (port, host);
          SOCK_Stream foo;
          SOCK_Connector con (foo, addr);

          If you don't want to have an extra variable named "con",
          you can replace this with:

          INET_Addr addr (port, host);
          SOCK_Stream foo;
          SOCK_Connector (foo, addr); // Calls the constructor.
          
Tue Dec 20 21:34:10 1994  Douglas C. Schmidt  (schmidt@tango)

        * Renamed the ./{libsrc,tests}/{Semaphores,Message_Queues}
          directories to SV_Semaphores and SV_Message_Queues to better
          reflect their true behavior and in order to prevent clashes with
          the new ASX names.

        * libsrc/ASX: Renamed Queue to Task to better reflect its true
          functionality.  In addition, renamed Message_List to
          Message_Queue.

Mon Dec 19 23:04:52 1994  Douglas C. Schmidt  (schmidt@tango)

        * Changed "private" to "protected" in ASX/Message_List.h at the
          request of Troy Warner (tnw1@core01.osi.com).

Mon Dec 12 23:47:01 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/IPC_SAP/SOCK_SAP: changed the name of the global utility
          function "bind_port()" to ace_bind_port() to avoid polluting the
          global symbol namespace.

        * Fixed a descriptor leak in SOCK_Dgram::shared_open() and
          SOCK_CODgram::shared_open().  The original version didn't
          automatically close down the socket descriptor if bind failed.
          The new version does close the descriptor down.

Sat Dec 10 00:53:20 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Reactor/Reactor.C (mask_ops): Fixed a stupid bug...  The
          test should have been

            if (this->invalid_handle (handle) || 
                this->poll_handles_[handle].fd == -1)

          rather than:

            if (this->invalid_handle (handle) || 
                this->poll_handles_[handle].fd != -1)

        * libsrc/Reactor/Reactor: Modified the semantics of
          Reactor::remove_handler() such that calling it with a value of
          Event_Handler::DONT_CALL or'd into the Reactor_Mask instructs
          the Reactor to remove the handler *without* calling the object's
          handle_close() method!

Fri Dec  9 12:53:31 1994  Douglas C. Schmidt  (schmidt@tango)

        * include/Synch: some C++ compilers (e.g., Centerline) barf when
          the see the following in an inline function:
          
          if (foo == bar)
            {
               errno = result;
               return -1;
            }
          result result;

          I fixed this by doing the following:

          if (foo == bar)
            {
               errno = result;
               result = -1;
            }
          result result;

Wed Dec  7 22:23:47 1994  Douglas C. Schmidt  (schmidt@tango)

        * include/Synch.h: Added additional methods in the Null_Mutex
          class in order to be consistent with the RW_Mutex interfaces...

        * libsrc/ASX/Message_List: Added new a set of methods called
          "try_enqueue_head" and "try_enqueue_tail" that will only insert
          a message into the queue if it is not already full.  If it is
          full, return EWOULDBLOCK.

Tue Dec  6 13:58:28 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Reactor/Event_Handler: added default values of -1 to the
          handle_input(), handle_output(), and handle_exception() methods.

Mon Dec  5 23:30:28 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/ASX/Message_List: Added a new method called set_length to
          Message_Block.  This method sets the length of the "active"
          portion of the message.  This is defined as the offset from
          RD_PTR to WR_PTR.

Sat Dec  3 20:40:53 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Threads/Synch: Added two new class called Write_Guard and
          Read_Guard, which provide functionality a la the Guard class,
          only that they acquire and release readers/writer locks.

        * libsrc/Threads/Synch: For interface uniformity with other
          synchronization wrappers I added an acquire() method.  This is
          implemented as a write-lock to be on the safe-side...

Fri Dec  2 13:33:39 1994  Douglas C. Schmidt  (schmidt@tango)

        * include/Synch.i (Mutex::tryacquire): Modified the behavior of
          Mutex::tryacquire so that it will return -1 and set errno to the
          appropriate return value of tryacquire(3T) if various types of
          "problems" occur (such as the Mutex already being held).

        * include/Message_List.i: Rearranged the order of the
          Message_Block::get_rd_ptr and Message_Block::set_wr_ptr methods
          to deal with inlining problems that some cfront-based C++
          compilers have...

        * libsrc/Reactor/Signal.[hi]: Changed set_handler/get_handler to
          "handler" to avoid a collision with Rogue Wave libraries.  This
          new version is more consistent with other usage in ACE anyhow...

        * Modified the behavior of Service_Config::Service_Config() so
          that it makes the initialize size of the Reactor be the same
          size as the Service_Repository.  This was done at the suggestion
          of Bob Sayle and Steve Warwick at ARINC Research.

Sun Nov 20 00:59:06 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/ASX/Message_List: Added two new methods
          (is_full() and is_empty()) to the public interface
          of Message_List.  These methods check whether the queue is full
          or empty *while holding the lock*.

        * libsrc/ASX/Queue.h: Made the svc() method a pure virtual
          function.  This is much cleaner than not doing it, particularly
          when we've already got to define open(), close(), and put()...

        * Added a new method to the IPC_SAP/Addr inheritance hierarchy.
          The method is called addr_to_string() and it converts the
          address of a subclass (e.g., either UNIX domain or Internet
          domain) into a string.  This functionality is particularly
          useful in parameterized types (such as Acceptor), which should
          be oblivious of the type of communication domain they are
          using...

        * Reorganized the ./apps/Logger/Service_Configurator_Logger
          directory in order to reuse more code.  Now, all the Acceptor
          pattern classes have been moved to a new subdirectory called
          ./libsrc/Acceptor.  In addition, this code has been generalized
          to work with the ASX framework!

Sat Nov 19 15:19:19 1994  Douglas C. Schmidt  (schmidt@tango)

        * Released version 2.15.5 (added a couple of minor fixes and some
          additional software to the release.  In particular, I've added
          the RPC++ C++ wrappers for Sun RPC.  See the README file for
          more info on this.

        * apps/Synch-Benchmarks: Reorganized all the synchronization tests
          so that they would be easier to understand and extend.

        * include/sysincludes.h (ACE_NONBLOCK): Fixed a stupid typo in the
          ./include/makeinclude/wrapper_macros.GNU file that accidentally
          used ACE_NONBLOCKING instead of ACE_NONBLOCK...  Jaysus

        * Fixed up the Service_Config.[Chi] source so that it no longer
          allocates statically linked services via static variables.
          Stacy Mahlon (mcs@contour.mayo.edu) recommended this change to
          workaround bugs in compilers that fail to initialize static
          objects appropriately.

Tue Nov 15 11:55:03 1994  Douglas C. Schmidt  (schmidt@tango)

        * Fixed a portability problem in the ./libsrc/Service_Configurator
          that was caused by certain compilers failing to initialize
          global variables correctly.  In particular, the Obstack object
          ace_obstack is now a pointer that is allocated dynamically by
          Service_Config.process_directive().  Thanks to Stacy Mahlon
          (mcs@contour.mayo.edu) for noticing this!

Mon Nov 14 12:16:14 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Threads/Thread.h: added C++ wrappers for
          thr_getconcurrency() and thr_setconcurrency().

        * Fixed a dumb typo in ./tests/IPC_SAP/SOCK_SAP/CPP-nbclient.C
          that failed to conditionally compile for different variants of
          siginfo...

        * Added some test programs that benchmark the performance of
          Solaris synchronization mechanisms.  See ./apps/Synch-Benchmarks
          for details...

        * Extended the methods of the Queue class to take advantage of the
          new Message_List methods that perform timed waits!  This
          involves changing many of the existing methods in this class to
          add an extra parameter of type timestruc_t *, which defaults to
          0.

        * Added some new comments in the
          ./include/makeinclude/wrapper_macros.GNU file that indicate what
          the various macros defined by the Makefile scheme actually mean.
          This should help people who are porting to a new system...

        * Fixed a dumb bug in ./tests/Shared_Memory that directly included
          system header files.  Everything in ACE should include
          "sysincludes.h" instead...  Thanks to Stacy Mahlon
          (mcs@contour.mayo.edu) for noticing this!

        * include/Memory_Pool.i (round_up): Fixed a typo where PAGESIZE
          should have been ACE_PAGE_SIZE.

Sat Nov 12 01:32:52 1994  Douglas C. Schmidt  (schmidt@tango)

        * Generalized the Shared_Memory_Pool class for Malloc so that it
          doesn't require the base addresses for multiple processes to all
          start at the same location.

        * libsrc/Service_Configurator/Thread_Spawn.i (Thread_Spawn):

          Fixed a stupid bug in the constructor.  Note that we should
          be checking if this->tm_ == 0, rather than != 0...

Fri Nov 11 00:11:41 1994  Douglas C. Schmidt  (schmidt@tango)

        * Released version 2.15.4 (added a couple of minor fixes).

        * Added a new test program in the ./tests/ASX/Message_List
          directory.  This program illustrates how thread-safe
          Message_Lists work using ASX.

        * libsrc/Threads/Thr_Manager.i: Added a new method called
          insert_thr() to Thr_Manager that is used in conjunction with
          Thr_Cntl::Thr_Cntl to make sure that a thread is added to the
          Thr_Manager's table correctly.

Thu Nov 10 20:14:11 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Log_Msg/Log_Record.C (print): Fixed the following very
          subtle (and very stupid) bug:

              return ::fprintf (fp, this->msg_data_);

          if this->msg_data_ contains '%', then this call will
          fail since fprintf tries to treat the percent sign as
          a format code.  The obvious fix is:

              return ::fprintf (fp, "%s", this->msg_data_);

        * libsrc/ASX/Message_List.i (is_empty): Fixed a braino that failed
          to check if there was a 0-sized buffer in the list.  It is now
          possible to enqueue a 0-sized buffer, which is helpful for
          things like signaling end of transmission by a producer.

        * libsrc/ASX/Message_List.C: Improved the robustness of the
          Message_List abstraction by detecting the case where the newly
          inserted Message_Block is a NULL pointer.  Before, this would
          crash the program, where now it returns -1 from the
          enqueue_head() or enqueue_tail() methods.

        * libsrc/Threads/Synch.h: added timedwait_signal() and timedwait()
          methods to class Condition.  These are wrappers around the
          cond_t cond_timedwait() function.

        * Improved the documentation of the class interfaces in the
          Synch.h C++ wrapper for Solaris 2.x threads mechanisms.

        * Changed the name of class Condition methods wait_signal() and
          timedwait_signal() to wait_alert() and timedwait_alert() to
          remove confusion with UNIX signals and the regular condition
          variable signal.

Wed Nov  9 23:49:24 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/IPC_SAP/Addr/UNIX_Addr.i (UNIX_Addr): Fixed another
          couple brainos in UNIX_Addr.i (thanks for Irfan
          (ip1@cs.wustl.edu) for noticing this).

        * libsrc/IPC_SAP/SOCK_SAP/SOCK.i (get_local_addr): Fixed a braino
          that didn't reset the Addr size after a call to getsockname().

Tue Nov  8 00:25:02 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Service_Configurator/Svc_Conf.y (create_service_type):
          Fixed a bug on lines 323 and 324, and 330 and 331.  The "#if
          defined" needs to be INSIDE the "case" statements.  Thanks to
          mcs@contour.mayo.edu for finding this!

        * Improved the interfaces for all the synchronization wrappers so
          that they can be given all the parameters for the underlying
          SunOS 5.x *_init calls.  Default values are given to keep the
          normal usage concise...

Mon Nov  7 21:41:13 1994  Douglas C. Schmidt  (schmidt@tango)

        * Changed all occurrences of Mutex_Rec to Recursive_Lock.  This is
          much more descriptive since by using templates, the recursive
          logic applies to a number of synchronization mechanisms (e.g.,
          Semaphores, RW_Mutex, Mutex, Null_Mutex, etc.)  rather than just
          the Mutex class.

        * Changed all occurrences of Mutex_Block to Guard.  This is more
          standard terminology and reflects Booch's terms more closely, as
          well.

Sun Nov  6 14:31:44 1994  Douglas C. Schmidt  (schmidt@tango)

        * Majorly improved the modularity and structure of the Reactor
          class.  Much duplicate code has been coalesced and several new
          features have been added.

        * Changed the name of the Reactor method set_ready() to
          ready_ops().  Added a new method called mask_ops().  These
          methods make it possible to manipulate the "dispatch masks" and
          the "ready masks" (e.g., READ_MASK, WRITE_MASK, etc.) at a much
          finer level of granularity without loss of efficiency or
          correctness.

Sat Nov  5 16:48:55 1994  Douglas C. Schmidt  (schmidt@tango)

        * Changed the name of three methods in the Semaphore class to
          mirror the terms used for Mutex and RW_Mutex.  This will help
          support the use of semaphores along with templates (e.g.,
          Rec_Lock) much better...  The old names were "wait", "trywait",
          and "signal".  The new names are "acquire", "tryacquire", and
          "release."

        * Added a new class called Signal_Block in Signal.[hiC] This class
          operates similar to Mutex_Block, in that it holds a set of
          signals over the duration of a C++ statement block.  The
          constructor masks out the signals and the destructor restores
          the signals.

        * Changed the name of files Signal_Handler.[hiC] to Signal.[hiC]
          to reflect a broadening of the functionality of the ACE wrappers
          for Signals.  For example, the new C++ classes wrap the sigset_t
          API, as well as the struct sigaction structure.

Fri Nov  4 00:41:48 1994  Douglas C. Schmidt  (schmidt@tango)

        * Yow, got the new Shared_Malloc/Malloc class to work correctly on
          SunOS 4.x, as well as SunOS 5.x.  It's a bit more clunky on
          SunOS 4.x since we have to use System V semaphores rather than
          Solaris synchronization mechanisms.  However, it now seems to
          function correctly!

        * Added a new method called "tryacquire" to Semaphore_Complex and
          Semaphore_Simple.  This method provides the same "non-blocking"
          semantics as it does in the Mutex, Semaphore, and RW_Mutex
          classes.

        * Added a new method called "remove()" to all the C++ wrappers in
          the Synch.[hi] file.  This improves the symmetry with the System
          V semaphore wrappers, and also gets around a nasty bug with
          cfront 3.x and its handling of templates and explicitly called
          destructors...

        * Added a new C++ wrapper class for Threads (Thread.h).  The
          eventual purpose of this class is to hide the differences
          between POSIX pthreads and Solaris threads.

        * Added new parameters to Thr_Manager::spawn to enable the stack
          and stack_size to be passed in.

        * Modified the Synch.h file so that the Null_Mutex and Mutex_Block
          classes will both be compiled, even if we are building ACE on a
          platform that doesn't support threads!

        * Added a timed event-loop method to the public interface of the
          Service_Config class.  This basically forwards the request to
          the underlying Reactor->handle_events method.  Thanks to Brad
          Needham (bneedham@arinc.com) of ARINC research for the
          suggestion!

Wed Nov  2 14:47:25 1994  Douglas C. Schmidt  (schmidt@tango)

        * Changed the interface for one of the Reactor's
          {register,remove}_handler methods.  These methods
          had previously taken a sigset_t &, but for some reason the Sun
          C++ 3.0 compiler can't seem to recognize that this is different
          from an int!  Therefore, I changed the interface to take a
          sigset_t *.

        * Fixed some portability bugs that crept into the SunOS 4 version
          of ACE, particularly with the siginfo_t extended signal handler
          stuff.

Tue Nov  1 21:46:07 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Log_Msg/Log_Msg.C (log): Fixed a braino on line 175.
          "int sig" was undefined outside the conditional (duhhh ;-)).

Thu Oct 27 17:23:37 1994  Douglas C. Schmidt  (schmidt@tango)

        * Fixed up some problems with Semaphore_Complex and
          Semaphore_Simple.  The new design should be more functional,
          particularly for Semaphore_Complex, which now generalizes to
          arrays of semaphores.

Wed Oct 26 16:38:42 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Shared_Malloc/: Created a .i file for Malloc and
          Memory_Pool to handle inlines.

        * Fixed a fence-post error in Mem_Map::map_it().  The new version
          should correctly set the length of the file *and* also do the
          appropriate memory mapping.

        * bin/clone.C: Fixed the clone program so that it now compiles
          with the C++ compiler rather than the C compiler.

Tue Oct 11 20:01:16 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Reactor/Reactor.h (Reactor): Changed the order of the
          arguments to the Reactor's register_handler() method used to
          register signal handler objects.  The new order puts both "new"
          components first, and any
          (optional) old components following this.  This is
          a more natural set of default values...

        * libsrc/Shared_Malloc: split out the Local and Shared memory
          pools for class Malloc into the Memory_Pool.[hC] files.

Mon Oct 10 22:54:53 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Threads/Synch.i: Reworked the Thread_Mutex and
          Process_Mutex classes to inherit their interface and
          implementation code from Mutex...  Thanks to Irfan Payrali for
          the suggestion!

Wed Sep 28 11:26:34 1994  Douglas C. Schmidt  (schmidt@tango)

        * Moved some of the tests directories around to better reflect
          precisely which ACE components are being tested.  In particular,
          the {client,server} directories that were originally under the
          ./tests/Reactor subtree are now located in the
          ./tests/Service_Configurator subtree.

Tue Sep 27 23:05:32 1994  Douglas C. Schmidt  (schmidt@tango)

        * Added a bunch of constructors/destructors for
          ./tests/Reactor/server to make g++ happy.

        * libsrc/Service_Configurator/Service_Object.[ih]
          (Service_Object): Added a constructor and destructor to
          Service_Object to make g++ happy.  Also, removed the #if for
          broken versions of g++ 2.5.8.

        * include/Reactor: Added a constructor and destructor for
          Null_Callback to make G++ happy...

        * libsrc/Message_Queues/: Added support for G++ templates.

        * Changed the handling of _sys_siglist in the sysincludes.h file
          to try and handle the weird SunOS 4 header file problems...

        * libsrc/IPC_SAP/SOCK_SAP/SOCK_Dgram_Brdcast.C (mk_broadcast):
          Removed the "struct" from new struct ifnode in order to
          compile...

Tue Sep 20 11:17:23 1994  Douglas C. Schmidt  (schmidt@tango)

        * Fixed a couple of minor typos in the Windows NT C++ wrappers for
          sockets.

        * Released version 2.15.2 so that Mark Frutig could have access to
          the latest source in order to write man pages!

Thu Sep 15 20:47:36 1994  Douglas C. Schmidt  (schmidt@tango)

        * Extended the Event_Handler interface to support the additional
          siginfo_t-style parameters for extended SVR4 signal handling.
          Note that for backwards compatibility, this new interface only
          enabled if the -DACE_HAS_SIGINFO flag is set in the
          wrapper_macros.GNU config file.  Making this change affected
          several of the existing ACE classes such as Service_Config and
          Signal_Handler.
          
Mon Sep 12 17:07:10 1994  Douglas C. Schmidt  (schmidt@tango)

        * Improved the modularity of the Reactor by creating a new class
          called Signal_Handler.  This new class basically encapsulates
          the signal handling mechanism provided by UNIX within a nice OO
          abstraction.  The new arrangement is particularly useful since
          the Signal_Handler class may be used in applications
          (e.g., the Malloc class abstraction) that do not require the
          other features of the Reactor.

Sun Sep 11 14:40:06 1994  Douglas C. Schmidt  (schmidt@tango)

        * Changed the default value for Semaphore_Simple and
          Semaphore_Complex from OPEN to CREATE.  This is more closely
          related to how SunOS thread synchronization variables work.

        * Changed the methods of the Semaphore_Simple class to be
          syntactically equivalent to the Process_Mutex and Thread_Mutex
          classes.  This makes it easier to write code that uses
          parameterized types to instantiate the appropriate type of
          synchronization primitive.

        * include/makeinclude/rules.local.GNU (OBJDIRS): Fixed the
          "depend" target so that it generates the correct dependencies
          for remaking .so files after they are changed.

        * Added a new pair of methods to the Reactor so that it is now
          possible to register/remove a sigset_t of signals in one
          operation.

Sat Sep 10 03:11:34 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/Mem_Map/Mem_Map.i (map_it): Fixed a few minor bugs with
          how the Mem_Map::map() method handles lseek()'s.

        * Changed the name of the Mem_Map::open() methods to
          Mem_Map::map().  This seems like a more reasonable name!  Also,
          removed the close() method.  This is trivial to implement via
          ::close (mmap.get_fd ());

Fri Sep  9 22:04:25 1994  Douglas C. Schmidt  (schmidt@tango)

        * Provided a new implementation of a flexible memory allocation
          scheme (Shared_Malloc/Malloc.[HiC]).  This memory allocation can
          be parameterized by the following:
          
          1. The pool from which memory is allocated (e.g.,
             local memory vs. shared memory).

          2. The type of synchronization used when allocating
             the memory (e.g., no synchronization, thread-based
             synchronization, process-based synchronization).

        * libsrc/Threads/Synch.i (Proc_Mutex): Added new classes to the
          Synchronization library.  These classes are wrappers around the
          USYNC_PROCESS and USYNC_THREAD flags to mutex_init().

Wed Sep  7 20:29:00 1994  Douglas C. Schmidt  (schmidt@tango)

        * include/sysincludes.h (MT): Added check to see if _REENTRANT was
          already defined, and if so, avoid redefining it!

Sun Sep  4 16:23:17 1994  Douglas C. Schmidt  (schmidt@tango)

        * Released version 2.15.1 to the world...

        * Added support for the Windows NT version of SOCK_SAP.

        * Fixed a few minor bugs involved with the order of linking
          libraries.

        * Fixed an oversight in ./testsReactor/server/server_test.C where
          I was still including the "Server_Test.h" file (ugh).

Wed Aug 31 13:27:10 1994  Douglas C. Schmidt  (schmidt@tango)

        * libsrc/IPC_SAP/SOCK_SAP/SOCK_Stream.C (open): Fixed a bug
          whereby the I/O descriptor wasn't being closed if connect()
          failed.  Thanks to Charles Eads
          (eads@synoptics.com) for reporting this.


        * Recompiled everything on SunOS 4.x using SunC++ 3.x and SunOS
          5.x using SunC++ 3.x and 4.x.  Everything seems to compile fine
          now.
          
        * Released version 2.15

Mon Aug 29 00:14:04 1994  Douglas C. Schmidt  (schmidt@tango)

        * Finished up a preliminary set of tests for ASX.  See the
          $WRAPPER_ROOT/tests/ASX/Event_Server directory for more details.

        * wrapper_macros.GNU (CC): Removed the ARCHFLAG from the CCFLAGS
          macro in the Makefile system.  Henceforth, all conditional
          compilation should be performed on a "per-feature" basis, rather
          than a "per-platform" basis...

        * libsrc/IPC_SAP/SOCK_SAP/SOCK_Dgram_Brdcast.C (send):
          Automatically convert the port number to htons format before
          using it to initialize the sin_port field of the addressing
          structure.  This is consistent with the behavior of other parts
          of IPC_SAP (particularly INET_Addr::set()).

Sun Aug 28 00:02:53 1994  Douglas C. Schmidt  (schmidt@tango)

        * Changed version number of 2.15 to reflect all the major
          modifications to the structure of ACE.

        * include/sysincludes.h: Started to fix up the conditional
          compilation scheme to be much smarter about the features that
          are available from both the compiler and the OS environment.

        * Added a fix suggested by Leslee Xu (lxu@ics.uci.edu) to better
          handle the normalization of Timer_Values.

        * Continued to make ACE coding conventions more consistent by
          removing get_/set_ prefix from all the accessor/manipulator
          methods.  Also, added an underbar at the end of all class and
          object instance variables.

Sat Aug 27 20:28:13 1994  Douglas C. Schmidt  (schmidt@tango)

        * Continued to improve error handling by replacing all uses of
          perror with the Log_Msg macros.

        * include/sysincludes.h: Continued to improve the namespace
          utilization in ACE by prefixing stand-along Misc functions with
          ace_.

        * include/FD_Set.h: Changed the name FD_Set_Iter to
          FD_Set_Iterator.

        * typedef'd int to HANDLE in Event_Handler.h in preparation for
          merging in the Windows NT support along with the regular ACE
          package.  I need to update all the other code in the entire
          release to be consist with this!

Thu Aug 25 19:49:57 1994  Douglas C. Schmidt  (schmidt@tango)

        * Fixed a bug with Thr_Manager.i that occurred if a thread created
          by ::thr_create() exits prior to the acquisition of the lock and
          the subsequent bookkeeping.

Wed Aug 24 17:34:49 1994  Douglas C. Schmidt  (schmidt@tango)

        * Updated SOCK_Dgram_Brdcast to return the average number of bytes
          sent.  This isn't necessarily the most useful info, but it
          doesn't hurt either.  Thanks to Mark Frutig (mfrutig@fnbc.com)
          for the suggestion.

Mon Aug 22 01:18:14 1994  Douglas C. Schmidt  (schmidt@tango)

        * Added a new test for the Service Configurator framework.  This
          test illustrates the dynamic configuration of an entire stream
          of Modules.

Sun Aug 21 03:16:00 1994  Douglas C. Schmidt  (schmidt@tango)

        * Cleaned up the ./tests/Reactor/server example to be more robust.
          In particular, it doesn't really make sense to have the same
          object be configured both statically and dynamically *at the
          same time*!  This was causing problems since each constructor
          was getting called twice for the same object -- once when it was
          created statically, and again when it was linked in
          dynamically...  Things work much better now.

Sat Aug 20 01:07:24 1994  Douglas C. Schmidt  (schmidt@tango)

        * Heavily revised the structure of the ./apps/Logger
          subdirectories to test out the new Makefile scheme.  Everything
          is working fine on Solaris!

        * Updated all the ./apps/Logger subdirectories to use the Acceptor
          name rather than the Client_Listener name.  This is consistent
          with recent papers...

        * Fixed all the Makefiles to utilize the new simplified build
          strategy.  The Makefiles are *far* more automated now!

        * Added support to all the libsrc Makefiles to produce both shared
          libraries (*.so) and traditional archives
          (*.a).

Fri Aug 19 16:13:42 1994  Douglas C. Schmidt  (schmidt@tango)

        * Majorly improved the Makefile support for building shared
          objects that will be dynamically linked explicitly.  No longer
          will we have to do the horrible hack of compiling all the source
          code using -pic.  Instead, only that code that will be linked
          dynamically must be compiled with -pic!  Note that this only
          works if the shared object is entirely self contained (i.e., it
          does *not* reference any statically linked symbols that are not
          defined in itself)!

        * Started to add changes to the source code to make its
          configation driven by features rather than by OS.  This should
          make everything much more portable soon!
          
        * Fixed IPC_SAP.h so that the constructor is protected (prevents
          accidental definition of an instance of this class).

Thu Aug 11 08:31:33 1994  Douglas C. Schmidt  (schmidt at valentine.ics.uci.edu)

        * Fixed Reactor::schedule_timer() so that it will unblock the
          Reactor if it is currently blocked.  This is necessary so that
          the Reactor will recompute the amount of time that it needs to
          wait before dispatching timer-based events.  Thanks to Todd Hoff
          for noticing this...

        * Fixed a stupid bug in the handle_input() method of
          Client_Listener in both the Reactor and Service_Configurator
          version of the Server Logging Daemon.  This routine was not
          explicitly returning 0 when it worked..., which might cause the
          Reactor to deregister the listener handler!

        * Added casts to the ::select() call in the Reactor to ensure that
          the FD_Set * -> fd_set * conversion operators are properly
          involved.  Thanks to Todd Hoff for this fix (thm@ictv.com).
          Todd noticed that the DCE pthreads implementation on AIX was
          confusing the compiler...

Mon Aug  8 18:11:03 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Added a new constructor for the FD_Set class that will convert
          an fd_set into an FD_Set.
          
        * Removed the default value for the Service_Repository constructor
          since this was ambiguous with the default constructor.

Tue Aug  2 18:25:28 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Fixed a bunch of minor "warning-causing" nits that were caused
          by #endif __INLINE__ in certain header files...

        * Added a new set of interfaces to the Reactor to retrieve a
          registered handler.  These interfaces are also useful for
          checking whether a handler is registered at a particular fd.

Sun Jul 10 17:43:19 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Improved the implementation of the Profile_Timer and
          High_Res_Timer classes.  In particular, the High_Res_Timer class
          now works quite nicely using SunC++ 4.0.

Mon Jul  4 12:49:14 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Changed the order of the base class inheritance list for the
          Service_Object class as a workaround for a bug in SunC++ 4.0's
          handling of pointers to member functions (ugh).

Sun Jul  3 18:07:16 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Added a bunch of changes (courtesy of
          george@truffula.fp.trw.com).  These changes fix minor
          portability problems with the new SunC++ 4.0 compiler.

Fri Jun 24 08:59:02 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Removed operator() from all the IPC_SAP listener classes.
          Defining this operator was causing more trouble than it is worth
          since C++ doesn't allow operator() to have default arguments
          (ugh).  The "right" thing to do is to simply use the accept()
          method in those classes instead of operator().

Wed Jun 22 16:54:05 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Fixed some problems with TLI_Listener that involved lax scoping
          of nested classes with cfront 3.x-based C++ compilers.

Tue Jun 14 11:56:56 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Added a bunch of changes to get portions of ACE up and running
          on SCO UNIX, on HP-UX, and on OSF/1.

Tue Jun  7 14:32:50 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Added support for FLEX's <<EOF>> symbol to properly cleanup when
          a configuration file has been parsed by the Service
          Configurator's lexer/parser.
          
Sun May 22 10:37:14 1994  Douglas C. Schmidt  (schmidt at valentine.ics.uci.edu)

        * Modified the semantics of explicit dynamic linking on SunOS 4.x.
          Now, if there is no _init or _fini function defined in a shared
          library, it isn't an error (we simply don't call the function!).

Mon May  9 07:58:35 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Included more fixes for GNU G++ courtesy of Aniruddha Gokhale
          <gokhale@cs.wustl.edu>.

Thu May  5 16:47:25 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Reimplemented the ./apps/Logger/Reactor_Logger to provide an
          illustration of how the Reactor works.

        * Added finishing touches to the new version of the Service
          Configurator framework.  This framework now permits completely
          automated configuration and reconfiguration of Service_Objects
          and Streams.  The next step is to add some more complete
          examples that illustrate how these features are used...

Tue May  3 10:17:12 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Fixed a bug in the Service Repository that would cause an
          extraneous dlclose on a shared library handle under some
          circumstances...

Mon May  2 11:07:52 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Modified the semantics of Service_Object_Type in the Service
          Configurator framework so that it does not automagically
          register the service object with the instance of the Reactor.
          The original behavior involved too much "over-specification" of
          the behavior of Service Objects.  Moreover, I can finally omit
          the crazy semantics of DONT_REGISTER_SVC and REGISTER_SVC!

        * Fixed some subtle bugs involved with pop'ing a remove'ing a
          Module from a Stream.  Note that we need to use Module::link
          rather than Module::set_next in order to ensure that all the
          necessary pointers get rearranged....

        * Fixed a couple of minor problems with deleting const objects in
          the Service_Repository.i file.  These were caught by G++, but
          not caught by SunC++!

Sun May  1 11:43:52 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Fixed subtle bug in Server_Config::run_event_loop().  This bug
          prevented reconfiguration from occurring under certain
          circumstances.

        * Added a new feature to the Service_Manager class in the Service
          Configurator framework.  This new feature enables the Service
          Configurator to be reconfigured remotely by clients.
        
        * Fixed a bug in Service_Manager that caused the Service
          Configurator to crash if SIGPIPE occurred if a client closed
          down ungracefully while retrieving information on active
          services.

        * Added a new argument to the Reactor::register_handler() method
          that is used to register signal handling Event_Handlers.  This
          new argument returns the current Event_Handler (if any) that is
          registered for this signal.

        * Fixed a potential bug in Service_Config::process_directives that
          behaved improperly when there was no svc.conf file present in a
          directory.

Wed Apr 27 12:55:46 1994  Douglas C. Schmidt  (schmidt at mabillon.ics.uci.edu)

        * Changed the name of Service_Directory to Service_Manager to
          reflect its intended functionality

Mon Apr 25 10:53:01 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Updated the Service Configurator framework to use the new signal
          handling facilities provided by the Reactor.  This cleans up a
          lot of the code in Service_Config.i and removes the need for
          ugly non-reentrant static class variables.

        * Released version 2.14

Sat Apr 23 14:29:11 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Changed the representation of the select()-based Reactor to be
          more similar with the poll()-based Reactor.  In particular,
          there is only one array of Event_Handlers rather than three...

Sun Mar 13 16:49:59 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Fixed a bug with the select-based version of the Reactor.  This
          bug caused problems when dispatching the handle_output() member
          function.

        * Fixed a bug with the select-based version of the Reactor.  This
          bug resulted in a failure to call the handle_close() member
          function on the write_fds and except_fds.

        * Changed the interface for Event_Handler::handle_close() so that
          the second parameter is a Reactor_Mask.  This allows the
          call-back routine to determine which side of a connection (i.e.,
          read-side vs. write-side or both) to close down.  Be careful
          since this change may break existing code that used the original
          1 argument handle_close() member function.
          
        * Changed the location of the Reactor_Mask.  It was originally an
          enum in Reactor.h.  It is now a typedef in Event_Handler.  This
          change will break existing code but it easily spotted since the
          compiler will give an error!

Sat Mar 12 15:16:59 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Continued to modify the grammar of the svc.conf file language.
          The latest version (illustrated in configuration files in the
          ./tests/Reactor/server and
          ./apps/Logger/Service_Configurator_Logger file) is both easier
          to read and to parse automatically.

Tue Mar  8 10:19:40 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Changed the behavior of the Get_Opt class so that it will
          perform option processing starting from argv[0] rather than
          argv[1] if the SKIP argument to the constructor is set to 0.
          Note that the default value is 1, so the behavior is the same
          for backwards compatibility.  Incidentally, this new change is
          necessary to support the Service Configurator stuff...

        * Changed the names of some of the Service_Record member functions
          to conform to the new idiom for naming get/set-style of member
          function accessors...

Sun Mar  6 12:47:03 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Removed libGet_Opt.a and merged it in with libMisc.a

Sat Mar  5 18:37:43 1994  Douglas C. Schmidt  (schmidt at tango.ics.uci.edu)

        * Updated the Service_Config class to use a flex/yacc based parser
          rather than an ad hoc parser and lexer.  This is useful since
          the new syntax for configuring a complete Stream into a Service
          Configurator-based application is more complicated...

        * Made a small change to the syntax of a svc.conf file.  Now any
          parameters that are passed to the Service_Object::init() member
          function of a dynamically linked service must be enclosed inside
          of double quotes.  In other words, service config entries such
          as

          dynamic ./dev_adapter.so:_alloc () Device_Adapter -p 3000

          now become

          dynamic ./dev_adapter.so:_alloc () Device_Adapter "-p 3000"

          This change makes it easier to parse the input using flex/yacc.

Sat Feb 12 18:53:14 1994  Douglas C. Schmidt  (schmidt@net4.ics.uci.edu)

        * Modified the Reactor so that it now also demultiplexes signals,
          as well as timer events and I/O events.  This required making a
          few sections of the Reactor code signal-safe, as well as
          thread-safe.

        * Changing the Reactor to handle signals also required a slight
          change to its interface.  For example, it is now mandatory to
          give the Event_Handler::{READ_MASK,WRITE_MASK,EXCEPT_MASK} when
          registering a handler...

Sat Feb  5 12:10:53 1994  Douglas C. Schmidt  (schmidt@net4.ics.uci.edu)

        * Changed the Condition and Monitor classes to use templates that
          parameterize them with the appropriate type of Mutex (i.e.,
          either Mutex or Mutex_Rec).  This greatly cleans up the code...
          Made a number of changes in other files
          (such as the Reactor) to account for the changes.

        * Added a new class called Mutex_Rec which implements a recursive
          Mutex abstraction on SunOS 5.x.  Recursive Mutexes may be
          acquired multiple times from a single thread.  Basically, this
          supports an efficient and clean way of handling nested locking
          conditions.

Thu Feb  3 12:37:34 1994  Douglas C. Schmidt  (schmidt@net4.ics.uci.edu)

        * Fixed a bug in Service_Config.i that was causing SIGHUP-driven
          reconfiguration not to work correctly.

        * Added a set of new member functions to the Reactor class to
          suspend() and resume() an event handler.  Also added suspend()
          and resume() member functions to the Server_Object class to take
          advantage of these new facilities automagically...

Mon Jan 31 09:47:06 1994  Douglas C. Schmidt  (schmidt@net4.ics.uci.edu)

        * Modified the no-args constructor for the Reactor to initialize
          it to the DEFAULT_SIZE.  The prior behavior was *not* to
          initialize it at all, which seems rather dumb in retrospect...

        * Improved the Reactor's support for multi-threading by adding a
          pipe() call that is used to force the Reactor to reconfigure
          itself everytime a new handler is registered or removed.
          Previously, any new changes wouldn't take place until the
          Reactor was triggered by some external event.  This old behavior
          was too non-deterministic...

Sun Jan  2 12:35:39 1994  Douglas C. Schmidt  (schmidt@net4.ics.uci.edu)

        * Modified the inheritance hierarchy for Service_Object so that it
          derives from both Shared_Object and Event_Handler.
          Shared_Object is a new abstract base class the provides an
          interface for dynamic linking of objects.  When RTTI is widely
          available for C++ the Service Configurator will be much more
          functional since we can automatically figure out whether an
          object is a Service_Object or just a Shared_Object and do the
          right thing with it!