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|
<!-- $Id$ -->
<html>
<head>
<title>ACE Subsets</title>
<link rev=made href="mailto:ace-users@cs.wustl.edu">
</head>
<body text = "#000000"
link="#000fff"
vlink="#ff0f0f"
bgcolor="#ffffff">
<hr><p>
<font size=+2><strong>Contents</strong></font>
<ol>
<li><a href="#Motivation">Motivation for Splitting ACE into Multiple
Libraries</a>
<li><a href="#Configuration Management">Configuration Management</a>
<li><a href="#Classes">Classes in Each ACE Library Subset</a>
<li><a href="#ACE Library Size Breakdown">ACE Library Size Breakdown</a>
<li><a href="#Building ACE Subsets">Building ACE Subsets</a>
<li><a href="#ACE_OS Adaptation Layer">ACE_OS Adaptation Layer</a>
</ol><p>
<hr><p>
<h3><a name="Motivation">Motivation for Splitting ACE into Multiple
Libraries</a></h3>
This document describes how we are splitting ACE into multiple
libraries, each of which will contain a smaller subset of the overall
ACE functionality. The primary motivations for subsetting ACE are:
<UL>
<LI><EM>Principle of parsimony</EM> -- <EM>i.e.</EM>, developers
should incur time/space overhead for components they use, rather
than for all the components in the ACE framework. <P>
<LI><EM>Simplify the learning curve</EM> -- <EM>i.e.</EM>, developers
only need to learn how to program components that they actually
use. <P>
</UL>
The main design goals of our approach are as follows: <P>
<OL>
<LI>Support the original libACE as before. Thus, for users who
want to use the existing ACE library as is, there will be
no changes, i.e., just link with <CODE>libACE</CODE> as usual. <P>
<LI>Allow ACE (and TAO) programmers to use smaller subsets of the
entire <CODE>libACE</CODE> library. These subsets will include the
following libraries: <P>
<DL>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_OS</CODE> -- This library contains the OS adaptation
layer and its supporting classes. All other ACE libraries will depend
on <CODE>libACE_OS</CODE> and it will depend on <EM>no</EM> other ACE
libraries. <P>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_Utils</CODE> -- This library contains the various ACE
container classes and other miscellaneous classes, such as Singleton,
auto_ptr, timers, etc. This library will depend only on
<CODE>libACE_OS</CODE>.<P>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_Logging</CODE> -- This library contains the various ACE
logging and tracing classes. This library will depend only on
<CODE>libACE_OS</CODE>. <P>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_Threads</CODE> -- This library contains the ACE
thread/process management and synchronization classes. This library
will depend only on <CODE>libACE_OS</CODE>. <P>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_Demux</CODE> -- This library contains the ACE Reactor and
Proactor classes. This library will depend on <CODE>libACE_OS</CODE>
and <CODE>libACE_Thread</CODE>. <P>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_Connection</CODE> -- This library contains the ACE
Connection components, i.e., Acceptor, Connector, and Svc_Handler.
This library will depend on <CODE>libACE_OS</CODE>,
<CODE>libACE_Thread</CODE>, and <CODE>libACE_Demux</CODE>. <P>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_Sockets</CODE> -- This library contains the ACE C++
wrappers for sockets. This library will depend on
<CODE>libACE_OS</CODE>. <P>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_IPC</CODE> -- This library contains all the ACE C++
wrappers for the other types of IPC and FILE I/O other than sockets.
This library will depend on <CODE>libACE_OS</CODE> and
<CODE>libACE_Sockets</CODE>. <P>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_Svcconf</CODE> -- This library contains the ACE C++
wrappers for the Service Configurator. This library will depend on
<CODE>libACE_OS</CODE>, <CODE>libACE_Demux</CODE>,
<CODE>libACE_Thread</CODE>, and <CODE>libACE_Sockets</CODE>. <P>
<DT> <img alt="o" src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_Streams</CODE> -- This library contains the ACE Streams
classes. This library will depend on <CODE>libACE_OS</CODE>,
<CODE>libACE_Demux</CODE>, and <CODE>libACE_Thread</CODE>. <P>
<DT> <img alt="o"
src="http://www.cs.wustl.edu/~schmidt/gifs/misc/redball.gif">
<CODE>libACE_Memory</CODE> -- This library contains the ACE C++
wrappers for shared memory and memory-mapped files. This library will
depend on <CODE>libACE_OS</CODE>.<P>
</DL>
</OL>
In addition, we will create <CODE>libACE_TAO</CODE>, which contains
just the core set of components in ACE that are required to support
TAO. This library is targeted at embedded systems developers who want
to minimize the footprint of ACE+TAO. We are also planning to support
the OMG's <A
HREF="http://www.omg.org/cgi-bin/doc?orbos/98-08-04.pdf">Minimum
CORBA</A> specification as part of a separate effort. <P>
Note that the ACE library subsets described above are intended as a
guideline, <EM>not</EM> a complete specification. The actual
partitioning of files in the final ACE library subsets may differ
somewhat to improve footprint and simplify common use-cases. <P>
<hr><p>
<h3><a name="Configuration Management">Configuration Management</a></h3>
Configuration management for the ACE library subsets described above
will be organized as follows:
<OL>
<LI>A single source tree with a single "version" for the source
tree.<P>
<LI>Releases of libACE and its "subsets" will be atomic, <EM>i.e.</EM>,
all or nothing.<P>
</OL>
<hr><p>
<h3><a name="Classes">Classes in Each ACE Library Subset</a></h3>
Below, we describe the classes in each ACE library subset.
<H4>libACE_OS</H4>
This library contains the OS adaptation layer and its supporting
classes. The classes in this library should not depend on any other
ACE library subsets. All of the other libraries will depend on this
library. The following classes are included in this library.
<PRE><CODE>
ACE.cpp
ACE.h
ACE.i
config.h
Basic_Types.cpp
Basic_Types.h
Basic_Types.i
OS.cpp
OS.h
OS.i
Version.h
</code></pre>
<H4>libACE_Utils</H4>
This library contains the following ACE container classes and other
miscellaneous classes.
<PRE><CODE>
ARGV.cpp
ARGV.h
ARGV.i
Auto_Ptr.cpp
Auto_Ptr.h
Auto_Ptr.i
Containers.cpp
Containers.i
Containers.h
Date_Time.cpp
Date_Time.h
Date_Time.i
Dynamic.cpp
Dynamic.h
Dynamic.i
Filecache.cpp
Filecache.h
Free_List.cpp
Free_List.i
Free_List.h
Get_Opt.cpp
Get_Opt.h
Get_Opt.i
Hash_Map_Manager.cpp
Hash_Map_Manager.h
High_Res_Timer.cpp
High_Res_Timer.h
High_Res_Timer.i
Managed_Object.cpp
Managed_Object.h
Managed_Object.i
Map_Manager.cpp
Map_Manager.h
Map_Manager.i
Object_Manager.cpp
Object_Manager.i
Object_Manager.h
Profile_Timer.cpp
Profile_Timer.h
Profile_Timer.i
Registry.cpp
Registry.h
Singleton.cpp
Singleton.h
Singleton.i
SString.cpp
SString.h
SString.i
System_Time.cpp
System_Time.h
Time_Request_Reply.cpp
Time_Request_Reply.h
Timer_Hash.cpp
Timer_Hash.h
Timer_Hash_T.cpp
Timer_Hash_T.h
Timer_Heap.cpp
Timer_Heap.h
Timer_Heap.i
Timer_Heap_T.cpp
Timer_Heap_T.h
Timer_Heap_T.i
Timer_List.cpp
Timer_List.h
Timer_List.i
Timer_List_T.cpp
Timer_List_T.h
Timer_List_T.i
Timer_Queue.cpp
Timer_Queue.h
Timer_Queue.i
Timer_Queue_Adapters.cpp
Timer_Queue_Adapters.h
Timer_Queue_Adapters.i
Timer_Queue_T.cpp
Timer_Queue_T.h
Timer_Queue_T.i
Timer_Wheel.cpp
Timer_Wheel.h
Timer_Wheel.i
Timer_Wheel_T.cpp
Timer_Wheel_T.h
Timer_Wheel_T.i
</code></pre>
<H4>libACE_Logging</H4>
This library contains the various ACE logging and tracing classes.
<PRE><CODE>
Dump.cpp
Dump.h
Dump_T.cpp
Dump_T.h
Log_Msg.cpp
Log_Msg.h
Log_Msg.i
Log_Priority.h
Log_Record.cpp
Log_Record.h
Log_Record.i
Trace.cpp
Trace.h
Trace.i
</code></pre>
<H4>libACE_Threads</H4>
This library contains the ACE thread/process management and
synchronization classes.
<PRE><CODE>
Activation_Queue.h
Activation_Queue.cpp
Atomic_Op.i
Future.h
Future.cpp
Method_Object.h
Method_Object.cpp
Process.cpp
Process.h
Process.i
Process_Manager.cpp
Process_Manager.h
Process_Manager.i
Sched_Params.cpp
Sched_Params.h
Sched_Params.i
Synch.cpp
Synch.h
Synch.i
Synch_Options.cpp
Synch_Options.h
Synch_Options.i
Synch_T.cpp
Synch_T.h
Synch_T.i
Thread.cpp
Thread.h
Thread.i
Thread_Manager.cpp
Thread_Manager.h
Thread_Manager.i
Token.cpp
Token.h
Token.i
</code></pre>
<H4>libACE_Demux</H4>
This library contains the ACE Reactor and its associated classes,
including the ACE Connection components.
<PRE><CODE>
Event_Handler.cpp
Event_Handler.h
Event_Handler.i
Event_Handler_T.cpp
Event_Handler_T.h
Event_Handler_T.i
Handle_Set.cpp
Handle_Set.h
Handle_Set.i
Priority_Reactor.cpp
Priority_Reactor.i
Priority_Reactor.h
Proactor.h
Proactor.i
Proactor.cpp
Reactor.cpp
Reactor.h
Reactor.i
Reactor_Impl.h
Select_Reactor.cpp
Select_Reactor.h
Select_Reactor.i
Select_Reactor_Base.cpp
Select_Reactor_Base.h
Select_Reactor_Base.i
Select_Reactor.h
Select_Reactor.i
WFMO_Reactor.cpp
WFMO_Reactor.h
WFMO_Reactor.i
XtReactor.cpp
XtReactor.h
</code></pre>
<H4>libACE_Connection</H4>
This library contains the ACE Connection components, i.e., Acceptor,
Connector, and Svc_Handler.
<PRE><CODE>
Acceptor.cpp
Acceptor.h
Acceptor.i
Asynch_Acceptor.cpp
Asynch_Acceptor.h
Asynch_Acceptor.i
Asynch_IO.cpp
Asynch_IO.h
Asynch_IO.i
Connector.cpp
Connector.h
Connector.i
Dynamic_Service.cpp
Dynamic_Service.h
Dynamic_Service.i
Strategies.cpp
Strategies.h
Strategies.i
Strategies_T.cpp
Strategies_T.h
Strategies_T.i
Svc_Handler.cpp
Svc_Handler.h
Svc_Handler.i
</code></pre>
<H4>libACE_Sockets</H4>
This library contains the ACE C++ wrappers for sockets.
<PRE><CODE>
IPC_SAP.cpp
IPC_SAP.h
IPC_SAP.i
LOCK_SOCK_Acceptor.cpp
LOCK_SOCK_Acceptor.h
LSOCK.cpp
LSOCK.h
LSOCK.i
LSOCK_Acceptor.cpp
LSOCK_Acceptor.h
LSOCK_Acceptor.i
LSOCK_CODgram.cpp
LSOCK_CODgram.h
LSOCK_CODgram.i
LSOCK_Connector.cpp
LSOCK_Connector.h
LSOCK_Connector.i
LSOCK_Dgram.cpp
LSOCK_Dgram.h
LSOCK_Dgram.i
LSOCK_Stream.cpp
LSOCK_Stream.h
LSOCK_Stream.i
SOCK.cpp
SOCK.h
SOCK.i
SOCK_Acceptor.cpp
SOCK_Acceptor.h
SOCK_Acceptor.i
SOCK_CODgram.cpp
SOCK_CODgram.h
SOCK_CODgram.i
SOCK_Connector.cpp
SOCK_Connector.h
SOCK_Connector.i
SOCK_Dgram.cpp
SOCK_Dgram.h
SOCK_Dgram.i
SOCK_Dgram_Bcast.cpp
SOCK_Dgram_Bcast.h
SOCK_Dgram_Bcast.i
SOCK_Dgram_Mcast.cpp
SOCK_Dgram_Mcast.h
SOCK_Dgram_Mcast.i
SOCK_IO.cpp
SOCK_IO.h
SOCK_IO.i
SOCK_Stream.cpp
SOCK_Stream.h
SOCK_Stream.i
</code></pre>
<H4>libACE_IPC</H4>
This library contains all the ACE C++ wrappers for the other types of
IPC and FILE I/O other than sockets. This library will depend on the
<CODE>libACE_Socket</CODE> library.
<PRE><CODE>
Addr.cpp
Addr.h
Addr.i
DEV.cpp
DEV.h
DEV.i
DEV_Addr.cpp
DEV_Addr.h
DEV_Addr.i
DEV_Connector.cpp
DEV_Connector.h
DEV_Connector.i
DEV_IO.cpp
DEV_IO.h
DEV_IO.i
FIFO.cpp
FIFO.h
FIFO.i
FIFO_Recv.cpp
FIFO_Recv.h
FIFO_Recv.i
FIFO_Recv_Msg.cpp
FIFO_Recv_Msg.h
FIFO_Recv_Msg.i
FIFO_Send.cpp
FIFO_Send.h
FIFO_Send.i
FIFO_Send_Msg.cpp
FIFO_Send_Msg.h
FIFO_Send_Msg.i
FILE_Addr.cpp
FILE_Addr.h
FILE_Addr.i
FILE.cpp
FILE.h
FILE.i
FILE_Connector.cpp
FILE_Connector.h
FILE_Connector.i
FILE_IO.cpp
FILE_IO.h
FILE_IO.i
INET_Addr.cpp
INET_Addr.h
INET_Addr.i
IO_SAP.cpp
IO_SAP.h
IO_SAP.i
IOStream.cpp
IOStream.h
IOStream_T.cpp
IOStream_T.h
IOStream_T.i
Pipe.cpp
Pipe.h
Pipe.i
Signal.cpp
Signal.h
Signal.i
SPIPE_Addr.cpp
SPIPE_Addr.h
SPIPE_Addr.i
SPIPE.cpp
SPIPE.h
SPIPE.i
SPIPE_Acceptor.cpp
SPIPE_Acceptor.h
SPIPE_Acceptor.i
SPIPE_Connector.cpp
SPIPE_Connector.h
SPIPE_Connector.i
SPIPE_Stream.cpp
SPIPE_Stream.h
SPIPE_Stream.i
SV_Message.cpp
SV_Message.h
SV_Message.i
SV_Message_Queue.cpp
SV_Message_Queue.h
SV_Message_Queue.i
SV_Semaphore_Complex.cpp
SV_Semaphore_Complex.h
SV_Semaphore_Complex.i
SV_Semaphore_Simple.cpp
SV_Semaphore_Simple.h
SV_Semaphore_Simple.i
SV_Shared_Memory.cpp
SV_Shared_Memory.h
SV_Shared_Memory.i
TLI.cpp
TLI.h
TLI.i
TLI_Acceptor.cpp
TLI_Acceptor.h
TLI_Acceptor.i
TLI_Connector.cpp
TLI_Connector.h
TLI_Connector.i
TLI_Stream.cpp
TLI_Stream.h
TLI_Stream.i
TTY_IO.cpp
TTY_IO.h
Typed_SV_Message.cpp
Typed_SV_Message.h
Typed_SV_Message.i
Typed_SV_Message_Queue.cpp
Typed_SV_Message_Queue.h
Typed_SV_Message_Queue.i
UNIX_Addr.cpp
UNIX_Addr.h
UNIX_Addr.i
UPIPE_Addr.h
UPIPE_Acceptor.cpp
UPIPE_Acceptor.h
UPIPE_Acceptor.i
UPIPE_Connector.cpp
UPIPE_Connector.h
UPIPE_Connector.i
UPIPE_Stream.cpp
UPIPE_Stream.h
UPIPE_Stream.i
</code></pre>
<H4>libACE_Svcconf</H4>
This library contains the ACE C++ wrappers for the Service
Configurator component.
<PRE><CODE>
Parse_Node.cpp
Parse_Node.h
Parse_Node.i
Service_Config.cpp
Service_Config.h
Service_Config.i
Service_Manager.cpp
Service_Manager.h
Service_Manager.i
Service_Object.cpp
Service_Object.h
Service_Object.i
Service_Repository.cpp
Service_Repository.h
Service_Repository.i
Service_Types.cpp
Service_Types.i
Service_Types.h
Shared_Object.cpp
Shared_Object.h
Shared_Object.i
Svc_Conf.h
Svc_Conf_l.cpp
Svc_Conf_y.cpp
Svc_Conf_Tokens.h
</code></pre>
<H4>libACE_Streams</H4>
This library contains the ACE Streams classes.
<PRE><CODE>
IO_Cntl_Msg.cpp
IO_Cntl_Msg.h
IO_Cntl_Msg.i
Message_Block.cpp
Message_Block.h
Message_Block.i
Message_Queue.cpp
Message_Queue.h
Message_Queue.i
Message_Queue_T.cpp
Message_Queue_T.h
Message_Queue_T.i
Module.cpp
Module.h
Module.i
Multiplexor.cpp
Multiplexor.h
Multiplexor.i
Stream.cpp
Stream.h
Stream.i
Stream_Modules.cpp
Stream_Modules.h
Stream_Modules.i
Task.cpp
Task.h
Task.i
Task_T.cpp
Task_T.h
Task_T.i
</code></pre>
<H4>libACE_Memory</H4>
This library contains the ACE C++ wrappers for shared memory and
memory-mapped files.
<PRE><CODE>
Malloc.cpp
Malloc.h
Malloc.i
Malloc_T.cpp
Malloc_T.h
Malloc_T.i
Mem_Map.cpp
Mem_Map.h
Mem_Map.i
Memory_Pool.cpp
Memory_Pool.h
Memory_Pool.i
Obstack.cpp
Obstack.h
Read_Buffer.cpp
Read_Buffer.h
Read_Buffer.i
Shared_Memory.cpp
Shared_Memory.h
Shared_Memory_MM.cpp
Shared_Memory_MM.h
Shared_Memory_MM.i
Shared_Memory_SV.cpp
Shared_Memory_SV.h
Shared_Memory_SV.i
</code></pre>
<H4>libACE_Token</H4>
This componenty contains the ACE C++ wrappers for Token classes.
<pre><code>
Local_Tokens
Remote_Tokens
Token_Collection
Token_Invariants
Token_Manager
Token_Request_Reply
</code></pre>
<H4>libACE_Other</H4>
This component contains miscellaneous ACE C++ wrappers.
<pre><code>
CORBA_Handler
CORBA_Ref
Local_Name_Space
Msg_WFMO_Reactor
Name_Proxy
Name_Request_Reply
Name_Space
Naming_Context
Registry_Name_Space
Remote_Name_Space
TP_Reactor
XtReactor
</code></pre>
<hr><p>
<h3><a name="ACE Library Size Breakdown">ACE Library Size Breakdown</a></h3>
Here is an example size breakdown, by ACE library component. It is
for ACE 4.6.25, statically built with these <a
href="../ACE-INSTALL.html#flags">make flags</a>:
<pre><code>
debug=0 optimize=1 static_libs_only=1 DEFFLAGS=-DACE_USE_RCSID=0
</code></pre><p>
To build an ACE static library, if shared libraries are the default, use
<code>make static_libs_only=1</code>.<p>
<center><table cellpadding=4 border=4>
<tr>
<th>Platform
<th>Component
<th>Total
<th>OS
<th>Utils
<th>Logging
<th>Threads
<th>Demux
<th>Connection
<th>Sockets
<th>IPC
<th>Svcconf
<th>Streams
<th>Memory
<th>Token
<th>Other
<tr>
<th rowspan=2>Linux (RedHat 5.2)<br>egcs 1.0.3
<th>Size, bytes
<td align=center>527445
<td align=center>10645
<td align=center>111542
<td align=center>13783
<td align=center>54239
<td align=center>33880
<td align=center>650
<td align=center>12565
<td align=center>32391
<td align=center>91919
<td align=center>16773
<td align=center>17154
<td align=center>69346
<td align=center>62558
<tr>
<th>Percentage of<br>total size
<td align=center>100
<td align=center>2
<td align=center>21
<td align=center>3
<td align=center>10
<td align=center>6
<td align=center>0
<td align=center>2
<td align=center>6
<td align=center>17
<td align=center>3
<td align=center>3
<td align=center>13
<td align=center>12
<tr>
<th rowspan=2>LynxOS 3.0.0<br>g++ 2.7-97r1
<th>Size, bytes
<td align=center>547004
<td align=center>17056
<td align=center>100712
<td align=center>11104
<td align=center>44548
<td align=center>45780
<td align=center>52888
<td align=center>11468
<td align=center>29184
<td align=center>84236
<td align=center>15664
<td align=center>17304
<td align=center>62312
<td align=center>54748
<tr>
<th>Percentage of<br>total size
<td align=center>100
<td align=center>3
<td align=center>18
<td align=center>2
<td align=center>8
<td align=center>8
<td align=center>10
<td align=center>2
<td align=center>5
<td align=center>15
<td align=center>3
<td align=center>3
<td align=center>11
<td align=center>10
<tr>
<th rowspan=2>SunOS5.7<br>egcs 1.1.1
<th>Size, bytes
<td align=center>587059
<td align=center>21651
<td align=center>116410
<td align=center>14005
<td align=center>58063
<td align=center>39620
<td align=center>770
<td align=center>13719
<td align=center>40362
<td align=center>101543
<td align=center>19611
<td align=center>20855
<td align=center>75806
<td align=center>64644
<tr>
<th>Percentage of<br>total size
<td align=center>100
<td align=center>4
<td align=center>20
<td align=center>2
<td align=center>10
<td align=center>7
<td align=center>0
<td align=center>2
<td align=center>7
<td align=center>17
<td align=center>3
<td align=center>4
<td align=center>13
<td align=center>11
<tr>
<th rowspan=2>SunOS 5.7<br>Sun C++ 4.2
<th>Size, bytes
<td align=center>512538
<td align=center>13433
<td align=center>63314
<td align=center>15570
<td align=center>61947
<td align=center>58158
<td align=center>864
<td align=center>16609
<td align=center>71484
<td align=center>50155
<td align=center>17747
<td align=center>22279
<td align=center>70771
<td align=center>96952
<tr>
<th>Percentage of<br>total size
<td align=center>100
<td align=center>3
<td align=center>12
<td align=center>3
<td align=center>12
<td align=center>11
<td align=center>0
<td align=center>3
<td align=center>14
<td align=center>10
<td align=center>3
<td align=center>4
<td align=center>14
<td align=center>19
<tr>
<th rowspan=2>VxWorks 5.3.1<br>GreenHills 1.8.8
<th>Size, bytes
<td align=center>669176
<td align=center>26248
<td align=center>143632
<td align=center>16860
<td align=center>60468
<td align=center>49964
<td align=center>868
<td align=center>18660
<td align=center>42512
<td align=center>120384
<td align=center>21444
<td align=center>19252
<td align=center>79112
<td align=center>70780
<tr>
<th>Percentage of<br>total size
<td align=center>100
<td align=center>4
<td align=center>21
<td align=center>3
<td align=center>9
<td align=center>7
<td align=center>0
<td align=center>3
<td align=center>6
<td align=center>18
<td align=center>3
<td align=center>3
<td align=center>12
<td align=center>11
<tr>
<th rowspan=2>VxWorks 5.3.1<br>g++ cygnus-2.7.2-960126<br>
(with implicit templates)
<th>Size, bytes
<td align=center>999608
<td align=center>21232
<td align=center>164948
<td align=center>14752
<td align=center>66728
<td align=center>138008
<td align=center>9788
<td align=center>13116
<td align=center>108128
<td align=center>146528
<td align=center>39552
<td align=center>20052
<td align=center>108140
<td align=center>148636
<tr>
<th>Percentage of<br>total size
<td align=center>100
<td align=center>2
<td align=center>17
<td align=center>1
<td align=center>7
<td align=center>14
<td align=center>1
<td align=center>1
<td align=center>11
<td align=center>15
<td align=center>4
<td align=center>2
<td align=center>11
<td align=center>15
</table></center><p>
</table></center><p>
<hr><p>
<h3><a name="Building ACE Subsets">Building ACE Subsets</a></h3>
By default, the ACE library contains all of the components that ACE
currently supports. To reduce build time and library size, you can
exclude unused components. To do that, define an
<code>ACE_COMPONENTS</code> variable using one of these approaches:<p>
<ol>
<li>In your <code>$(ACE_ROOT)/include/makeinclude/platform_macros.GNU</code>
file, <em>e.g.</em>, add:
<pre><code>ACE_COMPONENTS = OS</code></pre>or<p>
<li>On the make command line, <em>e.g.</em>,
<pre><code>make ACE_COMPONENTS=OS</code></pre>or<p>
<li>Set (and export) the <code>ACE_COMPONENTS</code> environment variable
to contain the components that you want to build.<p>
</ol><p>
Please see <code><a href="../ace/Makefile">../ace/Makefile</a></code>
for the default contents of <code>ACE_COMPONENTS</code>.<p>
A special value of <code>ACE_COMPONENTS</code> can be used to
build an ACE library that supports
<a href="http://www.cs.wustl.edu/~schmidt/TAO.html">TAO</a>. The
special value is <code>FOR_TAO</code>. So, for example, you can
add this to your
<code>$(ACE_ROOT)/include/makeinclude/platform_macros.GNU</code>
to restrict ACE support to just that which is needed for TAO:
<pre><code>
ACE_COMPONENTS = FOR_TAO
</code></pre><p>
Please note the current limitations:<p>
<ol>
<li>We currently don't check for interdependencies between components.
For example, if you build any component beside <code>OS</code>, you
must explicitly include <code>OS</code> in your
<code>ACE_COMPONENTS</code>.<p>
<li>We currently don't check this macro in other ACE or TAO Makefiles, or
in their tests. We'll add those checks as time allows.</li>
</ol>
<hr><p>
<h3><a name="ACE_OS Adaptation Layer">ACE_OS Adaptation Layer</a></h3>
The lowest-level component, <code>OS</code>, is also called the
<em>ACE_OS adaption layer</em>. It provides the ACE interface to
the underlying operating system, but little else. It can be used
standalone.<p>
To create the ACE_OS adaptation layer, build your <code>libACE</code>
with <code>ACE_COMPONENTS</code> set to <code>OS</code>. In addition,
add <code>#include "ace/config-minimal.h"</code> to your
<code>ACE_wrappers/ace/config.h</code> file.<p>
When using the ACE_OS adaptation layer, you'll be limited to the
the <code>ACE_OS</code> member functions, ACE's
<a href="../ace/Basic_Types.h">Basic_Types</a> and
<a href="../ace/Sched_Params.h">Sched_Params</a>, and macros defined in
<a href="../ace/OS.h"><code>ace/OS.h</code></a>. See ACE's
<a href="../tests/Basic_Types_Test.cpp">Basic_Types_Test.cpp</a>
for an example of usage.<p>
<HR><P>
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