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<p><a href="../index.html"><img src="title-21.png" width="253" height="39" alt="C++ Portable Types Library (PTypes) Version 2.1" border="0"></a>
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<p class="hpath"><a href="index.html">Top</a>: <a href="intro.html">Introduction</a>:
Changes </p>
<p><br>
<b>Version 2.1.1</b></p>
<ul>
<li>Added support for HP-UX</li>
<li>Several MacOS X compilation problems solved (socklen_t, libtool)</li>
<li>MSVC project files are now in the new VC7+ format (.sln, .vcproj)</li>
<li>Dropped support for BSDi, CygWin and also the Borland C++ compiler.
</ul>
<p><b>Version 2.1.0</b></p>
<ul>
<li>64-bit file positioning is now fully supported in stream classes. New methods <span class="lang">tellx()</span> and <span class="lang">seekx()</span> were added for this. Old methods <span class="lang">tell()</span> and <span class="lang">seek()</span> still return 32-bit offsets and may raise an exception if the returned value doesn't fit. </li>
<li>In addition to Intel and PowerPC processors, atomic functions for SPARC were rewritten in the assembly language, too (previously a mutex hash table was used).</li>
<li>All socket interfaces now have a virtual function <span class="lang">sockopt()</span> that can be overridden in descendant classes. This function is always called immediately after a socket descriptor is created, so that you can set up any additional socket options via a system call <span class="lang">setsockopt()</span>.</li>
</ul>
<p><b>Version 2.0.3</b></p>
<ul>
<li>PTypes-1.8 compatibility code removed (1.9-style lists are still supported)</li>
<li>Author's email has changed, please see Introduction.</li>
</ul>
<p><b>Version 2.0.2</b></p>
<ul>
report</a>).</li>
<li>Added versions of <span class="lang">ipmessage::receive()</span> that also
return the source IP address.</li>
<li>Added new properties and methods to <span class="lang">inmemory</span> and
<span class="lang">outmemory</span> classes to allow reusability of objects of
these types. Also cleaned up implementation of <span class="lang">outmemory</span>
so that the <span class="lang">increment</span> property is no longer needed.</li>
<li>Added <span class="lang">textmap::getkey()</span> method.</li>
<li>Added const versions of <span class="lang">operator[]</span> for <span class="lang">string</span>
and <span class="lang">tpodlist</span>.</li>
<li>Bug fixed in <span class="lang">pexchange()</span> on PowerPC with gcc 3.3
report</a>) </li>
report</a>)</li>
report 2</a>)</li>
</ul>
<p><b>Version 2.0.1</b></p>
<ul>
report 2</a>)</li>
report</a>)</li>
<li>Some minor fixes in the documentation.</li>
</ul>
<p><b>Version 2.0.0</b></p>
<ul>
<li>The list class/template family has been redesigned and expanded with new,
more flexible interfaces. An overview is given in the <a href="lists.html">Introduction
to lists</a>. The old interfaces are preserved in the headers for backward compatibility.</li>
<li>Ported the library to Cygwin.</li>
<li>'<span class="lang">make install</span>' copies the header files and the binaries
to default system locations.</li>
<li><span class="lang">Jobqueue</span> and <span class="lang">msgqueue</span>
are now protected from overflows by an extra semaphore. If the number of unhandled
messages in a queue reaches <span class="lang">limit</span> (a parameter set through
the constructor) the post/send operation waits on a semaphore until the queue
becomes available again.</li>
<li>Windows DLLs now called: ptypes20.dll and ptypes20g.dll, generted by MSVC
and GCC respectively.</li>
<li>Added <span class="lang">__stdcall</span> (<span class="lang">ptdecl</span>
macro) modifiers for all public functions in the library to be independent from
the compiler command-line options on Windows.</li>
<li>Variant arrays have been optimized for memory usage.</li>
<li>All classes in the library are now either copyable or non-copyable explicitly.</li>
<li>The last parameter of <span class="lang">copy()</span> and <span class="lang">del()</span>
for strings is now optional.</li>
report</a>)</li>
</ul>
<p><b>Version 1.9.0</b></p>
<ul>
<li>A new class <a href="async.jobqueue.html">jobqueue</a> has been added. As
shown in the multithreading examples, it helps to easily implement a thread-pool
model.</li>
<li><a href="async.examples.html">Multithreading examples</a> have been re-written.
Example 2 is now a full-featured multithreaded server template with a thread pool.</li>
<li>Atomic functions for PowerPC have been implemented in the assembly language.</li>
<li>UNIX shared object naming style has been changed. The shared library is now
named libptypes.so.19 (libptypes.19.dylib on MacOS). The shared object now 'remembers'
its real name (with the -soname option) for correct linking of user applications.
report</a>)</li>
<li>Windows/MSVC DLL has been renamed to ptypes19.dll because of incompatible
changes in the library structures. The DLL built by Dev-C++ has been renamed to
ptypes19dc.dll for the same reason and also to avoid clashing with MSVC-generated
DLL.</li>
<li>The multithreaded version of the dynamic string class has been improved.</li>
<li>A minor performance fixup in <span class="lang">msgqueue::send()</span> -
the semaphore is no longer allocated dynamically.</li>
<li>The <span class="lang">exceptobj</span> class has been renamed to <span class="lang">exception</span>,
<span class="lang">tsemaphore</span> - to <span class="lang">timedsem</span>.
The old names are typedef'ed for compatibility with older versions of the library.</li>
<li>The <span class="lang">message</span> class now uses a portable typedef <span class="lang">pinptr</span>
for the <span class="lang">param</span> and <span class="lang">result</span> fields.
This allows to use these fields both as integers and pointers when necessary.
The <span class="lang">id</span> field can now be in the range <span class="lang">0</span>
to <span class="lang">INT_MAX</span>; the internal value <span class="lang">MSG_QUIT</span>
is now a negative value.</li>
<li><span class="lang">Bind()</span> and <span class="lang">bindall()</span> now
return values that can be used in call to <span class="lang">poll()</span> and
<span class="lang">serve()</span> for <span class="lang">ipserver</span> objects.</li>
<li><span class="lang">setlength(string&)</span> now returns a <span class="lang">char*</span>
value.</li>
report</a>)</li>
<li>The <span class="lang">contains()</span> family of functions has been fixed
report</a>)</li>
<li>The <span class="lang">ins()</span> family of functions has been fixed to
correctly handle values of <span class="lang">at</span> beyond the last character
report</a>)</li>
<li>A bug has been fixed in the internal function <span class="lang">psockname()</span>
that caused <span class="lang">get_myport()</span> methods (<span class="lang">ipstream</span>
and <span class="lang">ipmessage</span> classes) to return an incorrect value.
report</a>)</li>
<li>Compiler warning (and a potential problem) has been fixed on 64-bit systems.
report</a>)</li>
</ul>
<p><b>Version 1.8.3</b></p>
<ul>
<li>Public header files are now included in the documentation in browsable form
(see <a href="htsrc.html">Header files</a>).</li>
<li>Delete notification mechanism for components, previously undocumented, now
described in section <a href="unknown.html">Unknown & Component</a>.</li>
<li>Variant-to-string typecast problem has been fixed that caused compilation
report</a>)</li>
<li>A problem has been solved that allowed template lists to accept any class
report</a>)</li>
<li>A better explanation of the librarie's policies and philosophy is given in
section 'Why use PTypes?' (see <a href="intro.html">Introduction</a>).</li>
</ul>
<p><b>Version 1.8.2</b></p>
<ul>
<li>The library has been ported to BSD/OS (BSDI). There is also limited support
for OpenBSD and NetBSD without makefiles.</li>
<li>The library now compiles with Visual C/C++ 7.1 (.NET) after considerable changes
in <span class="lang"><ptypes.h></span></li>
<li>A bug has been fixed in <span class="lang">instm::token()</span> that caused
report</a>)</li>
<li>A problem has been fixed in <span class="lang">phost*()</span> functions that
report</a>)</li>
<li>A bug has been fixed in wshare: the plus sign '+' should not be decoded as
report</a>)</li>
</ul>
<p><b>Version 1.8.1</b></p>
<ul>
<li>The following functions have been fixed to be thread-safe on UNIX systems:
<span class="lang">phostbyname()</span>, <span class="lang">phostbyaddr()</span>,
<span class="lang">phostcname()</span>, <span class="lang">nowstring()</span>,
and also <span class="lang">now()</span> and <span class="lang">tzoffset()</span>
report 2</a>)</li>
</ul>
<p><b>Version 1.8.0</b></p>
<ul>
<li>The library now compiles in 3 versions: static single-threaded, static multithreaded
and dynamic (shared) multithreaded (see <a href="compiling.html">Compiling</a>).
On some platforms single-threaded dynamic strings can be twice as faster than
multithreaded. </li>
<li>New format specifiers for <a href="streams.outstm.html">outstm::putf()</a>
introduced: <span class="lang">%a</span> for IP addresses and <span class="lang">%t</span>
for timestamps. </li>
<li>New classes <a href="async.mutex.html">scopelock</a>, <a href="async.rwlock.html">scoperead</a>
and <a href="async.rwlock.html">scopewrite</a> added in <span class="lang">pasync.h</span>.</li>
<li>New conversion functions added <span class="lang">stringtoie()</span> and
<span class="lang">stringtoue()</span> (see <a href="string.conversion.html">String
conversion</a>).</li>
<li>A bug has been fixed in <span class="lang">tsemaphore::wait()</span>. This
report</a>)</li>
report</a>)</li>
report</a>)</li>
</ul>
<p><b>Version 1.7.6</b></p>
<ul>
<li>The library now compiles with Dev-C++/MinGW on Windows. Dev-C++ project files
have been created for building the static and shared libraries, as well as the
demo and testing programs.</li>
<li>A new file output class called <a href="streams.logfile.html">logfile</a>
report</a>.</li>
<li><span class="lang">Wshare</span> can now downgrade process privileges (setuid/setgid)
on UNIX. Also, file handling and server status report has moved to separate optional
modules mod_file.cxx and mod_wstat.cxx.</li>
This page can be accessed only on-line on the master server, since changes here
may appear more frequently than in the library documentation.</li>
<li>Bugs have been fixed in <span class="lang">tzoffset()</span> for Windows and
report 2</a>).</li>
<li>A bug has been fixed in <span class="lang">strmap::strmap()</span> constructor
report</a>).</li>
<li>Thread creation routine has been changed on Windows to ensure thread-safety
report</a>).</li>
</ul>
<p><b>Version 1.7.5</b></p>
<ul>
<li>A <span class="lang">tv_usec</span>-related bug fixed in all socket/pipe waiting
and polling routines. Non-integral timeout values were treated incorrectly in
report</a>)</li>
report</a>)</li>
<li><span class="lang">instm::putback()</span> added.</li>
</ul>
<p><b>Version 1.7.4</b></p>
<ul>
<li>A new class <a href="unit.html">unit</a> has been added. Unit is a mini-process
with its own <span class="lang">main()</span> and input/output 'plugs'; several
unit objects within the framework of one application can be connected to form
pipes, like processes in the UNIX shell.</li>
<li>A new method for creating local pipes, <a href="streams.infile.html">infile::pipe()</a>,
has been added.</li>
<li>Null output stream object has been added as a static variable <a href="streams.stdio.html">pnull</a>.</li>
<li><span class="lang">__ptypes_version</span> and the DLL version resource were
not incremented in the previous release. Now they both show 1.7.4.</li>
<li><span class="lang">outmemory::get_strdata()</span> added.</li>
</ul>
<p><b>Version 1.7.3</b></p>
<ul>
<li>Wrapper templates for <span class="lang">objlist</span>, <span class="lang">strlist</span>
and <span class="lang">strmap</span> have been created. These templates help to
avoid extra (dangerous) pointer typecasts and provide better compile-time type
checking when using lists with objects derived from <span class="lang">unknown</span>.
See introduction to <a href="lists.html">Lists</a>.</li>
<li>A new class template <a href="unknown.html">compref</a> has been added that
implements a 'smart' pointer to a reference-counted <span class="lang">component</span>
object.</li>
<li>Function template <a href="async.utils.html">tpexchange()</a> has been added
as a type-safe wrapper for <span class="lang">pexchange()</span>.</li>
<li>New methods <a href="inet.ipstream.html">ipstream::get_myport()</a> and <a href="inet.ipmessage.html">ipmessage::get_myport()</a>
have been added.</li>
</ul>
<p><b>Version 1.7.2</b></p>
<ul>
<li>Fixed compilation and linking parameters for Linux and FreeBSD to build the
shared library correctly (thanks to Alan Eldridge).</li>
<li>Bug fixed in wshare/urlutils.cxx: the URL parameters (protocol parameters,
query string and fragment) were treated incorrectly in previous versions.</li>
</ul>
<p><b>Version 1.7.1</b></p>
<ul>
<li>A new section called "<a href="deploying.html">Deploying the shared (dynamic)
library</a>" is now included in the documentation. It describes in detail
the procedure of using and deploying the shared (dynamic) library, discusses advantages
and disadvantages of dynamic linking vs. static linking.</li>
<li>PTypes.DLL now contains a version resource. In addition, the library declares
a global variable __ptypes_version, which can be checked at run-time or during
installation on UNIX.</li>
<li><span class="lang">strlist::compare()</span> is declared as virtual to allow
alternate sorting algorithms in descendant classes.</li>
</ul>
<p> <b>Version 1.7.0</b></p>
<ul>
<li><a href="variant.html">Variant</a> class implemented. A <span class="lang">variant</span>
variable can hold values of many fundamental types (int, bool, datetime, float,
string) plus associative arrays of variants and reference-counted pointers to
objects. Variants can be used for designing interpreters for higher-level languages,
designing or working with databases and spreadsheets, etc.</li>
<li>Message-oriented networking classes (<a href="inet.ipmessage.html">ipmessage</a>
and <a href="inet.ipmsgserver.html">ipmsgserver</a>) implemented based on the
UDP protocol.</li>
<li>The library now compiles both as a shared object (DLL on Windows) and a static
library. The shared object (or DLL) is placed in <span class="lang">so/</span>
when building the library.</li>
<li><span class="lang">outstm::putf()</span> is now atomic with respect to multithreading.</li>
<li><span class="lang">Ipsocket</span> renamed to <span class="lang">ipstream</span>,
<span class="lang">ipserver</span> renamed to <span class="lang">ipstmserver</span>.
The old names are available as typedef's for compatibility.</li>
</ul>
<p><b>Version 1.6.1</b></p>
<ul>
<li>Read/write lock (<a href="async.rwlock.html">rwlock</a>) algorithm improved
to be "fairer" with respect to both readers and writers.</li>
<li><a href="async.trigger.html">Trigger</a> algorithm fixed to be fully compatible
with Windows event interface.</li>
<li><span class="lang">psleep()</span> fixed on Solaris to be reentrant (multithreaded).</li>
</ul>
<p><b>Version 1.6.0</b></p>
<ul>
<li>Portable named pipes added - <a href="streams.namedpipe.html">namedpipe</a>
and <a href="streams.npserver.html">npserver</a>.</li>
<li>Read/write lock class <a href="async.rwlock.html">rwlock</a> (a smarter mutex)
added.</li>
<li><a href="async.trigger.html">Trigger</a> (a simplified semaphore) class added.</li>
<li>Memory stream classes <a href="streams.inmem.html">inmemory</a> and <a href="streams.outmem.html">outmemory</a>,
previously undocumented, now described in section Streams.</li>
<li> Windows InterlockedXXX calls replaced with internal assembly code to work
as expected even on Win95.</li>
<li>A string-to-int (64-bit) conversion routine added - <span class="lang">stringtoi()</span>.</li>
<li><span class="lang">ipsocket::get_myip()</span> added.</li>
<li>Dynamic string assignment and <span class="lang">itostring()</span> optimized.</li>
<li>Better diagnostics messages for <span class="lang">ipserver</span>.</li>
</ul>
<p><b>Version 1.5.3</b></p>
<ul>
<li>Token extraction methods can now optionally limit input and throw en exception
if the token exceeds the limit. This new feature is targeted to real-world networking
applications.</li>
<li>A new section "<a href="portability.html">Portability and Performance
Issues</a>" and an <a href="ref.html">alphabetical reference</a> of all public
symbols added in the documentation.</li>
<li>Examples for the sockets interface and some other modules rewritten to be
cleaner and more educational.</li>
<li> GCC 3.x compilation problem solved in pinet.h (friend class declaration).</li>
</ul>
<p><b>Version 1.5.2</b></p>
<ul>
<li> Dynamic strings have been optimized and thoroughly tested. Compared to MFC
CString class, PTypes dynamic strings now show much better performance.</li>
<li> Bug fixed in <span class="lang">decodedate()</span>. This function worked
incorrectly for the last day (12/31) of each leap year.</li>
</ul>
<p><b></b><b>Version 1.5.1</b></p>
<ul>
<li> Documentation cleanup.</li>
requests. Code cleanup in wshare.</li>
</ul>
<p><b>Version 1.5.0</b></p>
<ul>
<li> Wshare is becoming modular/scalable. Custom handlers for a new HTTP method,
file extension or a nonexistent path can be easily incorporated into wshare at
compile time. Currently this feature is documented only in the source files.</li>
<li> Standard input, output and error devices are declared in <pstreams.h>
as pin, pout and perr stream objects respectively.</li>
<li> New printf-style formatted output method <span class="lang">outstm::putf()</span>.
Accepts only a subset of format specifiers common to all platforms.</li>
<li> Bug fix in <span class="lang">outstm::put()</span>.</li>
<li> Handle leak on Windows fixed.</li>
<li> realloc-related memory leak on UNIX fixed.</li>
<li> Bug in string class fixed: <span class="lang">s += s</span> was working incorrectly
in previous versions.</li>
</ul>
<p><b></b><b>Version 1.4.1</b></p>
<ul>
<li> The MD5 module is replaced with L. Peter Deutsch's implementation. Please,
see comments in <span class="lang">src/pmd5.cxx</span>.</li>
<li> Wshare: code cleanup in various modules; Borland C++ port (<span class="lang">wshare/wshare.mak</span>);
a new option <span class="lang">-x</span> to ignore default index files and always
show directory indexes.</li>
<li> Include directives in <span class="lang">src/pipserver.cxx</span> and <span class="lang">src/pipsocket.cxx</span>
have been reordered to avoid compiler errors on some Linux systems.</li>
</ul>
<p><b>Version 1.4.0</b></p>
<ul>
<li> A big sample program called wshare is now included in the project. Wshare
is a simple and fast HTTP/1.1 web server; it demonstrates the full power of PTypes.
Currently wshare lacks server-side scripting functionality, however, it can be
used to quickly share local files over the web.</li>
<li> Waiting for data with timeout on a socket object is implemented (<span class="lang">ipsocket::waitfor()</span>).</li>
<li> <span class="lang">SIGPIPE</span> is now blocked on UNIX when using PTypes'
sockets.</li>
<li> A new utility function <span class="lang">utodatetime()</span> for converting
UNIX <span class="lang">time_t</span> values to PTypes datetime.</li>
<li> Atomic exchange for pointers is implemented separately, since on 64-bit platforms
the size of a void pointer differs from the size of int.</li>
<li> A bug fix for autofree threads. Please note that semantics of <span class="lang">thread::waitfor()</span>
has changed (see documentation for details).</li>
</ul>
<p><b></b><b>Version 1.3.2</b></p>
<ul>
<li> Ported to MacOS X (Darwin).</li>
<li> Important fixes in the thread module (<span class="lang">src/pthread.cxx</span>):
PTypes now ensures proper operation and memory cleanup on all platforms, even
with buggy implementation of the POSIX threads specs.</li>
<li> Compiled under Linux/Alpha, Linux/PowerPC and Linux/Sparc with minor fixes:
<span class="lang">ipaddress</span> type is now castable to unsigned long instead
of signed long; variables of type ipaddress must be compared with ipnone instead
of -1.</li>
</ul>
<p><b>Version 1.3.1</b></p>
<ul>
<li> CVS repository setup at SourceForge.net (see the main page for details).</li>
<li> Various fixes in the documentation.</li>
<li> Fixes in the BCC makefile <span class="lang">src/ptypes.mak</span>.</li>
</ul>
<p><b></b><b>Version 1.3</b></p>
<ul>
<li> <a href="inet.html">IP socket</a> manipulation classes and utilities, finally!</li>
<li> The new <a href="time.html">datetime</a> type along with time/calendar manipulation
utilities.</li>
<li> Timed semaphore class <a href="async.semaphore.html">tsemaphore</a>.</li>
<li> The library now compiles within a namespace "pt" by default.</li>
<li> <span class="lang">semaphore::post()</span> and <span class="lang">semaphore::wait()</span>
now do not return any values. If these functions fail, a fatal non-recoverable
error is raised instead of returning an error code to the caller. It is senseless
to run a multithreaded application if the system fails to operate semaphores.</li>
<li> Bug fixed in non-Intel version of <span class="lang">pexchange()</span>.</li>
</ul>
<p><b>Version 1.2</b></p>
<ul>
<li> The entire library can now be conditionally enclosed within a namespace to
avoid name conflicts in large projects. By default the library does NOT compile
within a namespace.</li>
<li> Several fixes to improve performance of the dynamic string class, as well
as to make it thread safe (see introduction to <a href="string.html">string class</a>).</li>
<li> Ported to SunOS. (The library should now compile virtually on any UNIX platform.
Need some time and access to different computers.)</li>
<li> Compiled with Borland C++ 5.5 (aka C++ Builder) under Windows. The makefile
is <span class="lang">src/ptypes.mak</span>.</li>
<li> MD5 (message digest) algorithm is implemented as an output stream class <a href="streams.md5.html">outmd5</a>.</li>
<li> Bug fixes in <span class="lang">src/pinstm.cxx</span> and <span class="lang">src/poutstm.cxx</span>.</li>
</ul>
<p><b>Version 1.1 was the first public release</b></p>
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