Subject: [Boost-commit] svn:boost r72432 - trunk/libs/asio/doc
Date: 2011-06-06 07:56:19
Date: 2011-06-06 07:56:18 EDT (Mon, 06 Jun 2011)
New Revision: 72432
Text files modified:
trunk/libs/asio/doc/history.qbk | 155 +++++++++++++++++++++++++++++++++++++++
1 files changed, 153 insertions(+), 2 deletions(-)
--- trunk/libs/asio/doc/history.qbk (original)
+++ trunk/libs/asio/doc/history.qbk 2011-06-06 07:56:18 EDT (Mon, 06 Jun 2011)
@@ -7,10 +7,161 @@
[section:history Revision History]
+[heading Asio 1.6.0 / Boost 1.47]
+* Added support for signal handling, using a new class called `signal_set`.
+ Programs may add one or more signals to the set, and then perform an
+ `async_wait()` operation. The specified handler will be called when one of
+ the signals occurs. The same signal number may be registered with multiple
+ `signal_set` objects, however the signal number must be used only with Asio.
+ Addresses [@https://svn.boost.org/trac/boost/ticket/2879 #2879].
+* Added handler tracking, a new debugging aid. When enabled by defining
+ `BOOST_ASIO_ENABLE_HANDLER_TRACKING`, Asio writes debugging output to the
+ standard error stream. The output records asynchronous operations and the
+ relationships between their handlers. It may be post-processed using the
+ included [^handlerviz.pl] tool to create a visual representation of the
+ handlers (requires GraphViz).
+* Added support for timeouts on socket iostreams, such as `ip::tcp::iostream`.
+ A timeout is set by calling `expires_at()` or `expires_from_now()` to
+ establish a deadline. Any socket operations which occur past the deadline
+ will put the iostream into a bad state.
+* Added a new `error()` member function to socket iostreams, for retrieving the
+ error code from the most recent system call.
+* Added a new `basic_deadline_timer::cancel_one()` function. This function lets
+ you cancel a single waiting handler on a timer. Handlers are cancelled in
+ FIFO order.
+* Added a new `transfer_exactly()` completion condition. This can be used to
+ send or receive a specified number of bytes even if the total size of the
+ buffer (or buffer sequence) is larger.
+* Added new free functions `connect()` and `async_connect()`. These operations
+ try each endpoint in a list until the socket is successfully connected, and
+ are useful for creating TCP clients that work with both IPv4 and IPv6.
+* Extended the `buffer_size()` function so that it works for buffer sequences
+ in addition to individual buffers.
+* Added a new `buffer_copy()` function that can be used to copy the raw bytes
+ between individual buffers and buffer sequences.
+* Added new non-throwing overloads of `read()`, `read_at()`, `write()` and
+ `write_at()` that do not require a completion condition.
+* Added friendlier compiler errors for when a completion handler does not meet
+ the necessary type requirements. When C++0x is available (currently supported
+ for [^g++] 4.5 or later, and MSVC 10), `static_assert` is also used to
+ generate an informative error message. This checking may be disabled by
+ defining `BOOST_ASIO_DISABLE_HANDLER_TYPE_REQUIREMENTS`.
+* Added a new, completely rewritten SSL implementation. The new implementation
+ compiles faster, shows substantially improved performance, and supports
+ custom memory allocation and handler invocation. It includes new API features
+ such as certificate verification callbacks and has improved error reporting.
+ The new implementation is source-compatible with the old for most uses.
+ However, if necessary, the old implementation may still be used by defining
+ Addresses [@https://svn.boost.org/trac/boost/ticket/3702 #3702],
+ [@https://svn.boost.org/trac/boost/ticket/3958 #3958].
+* Changed the separate compilation support such that, to use Asio's SSL
+ capabilities, you should also include `boost/asio/ssl/impl/src.hpp` in one
+ source file in your program.
+* Changed the SSL implementation to support build environments where SSL v2 is
+ explicitly disabled ([@https://svn.boost.org/trac/boost/ticket/5453 #5453]).
+* Made the `is_loopback()`, `is_unspecified()` and `is_multicast()` functions
+ consistently available across the `ip::address`, `ip::address_v4` and
+ `ip::address_v6` classes
+ ([@https://svn.boost.org/trac/boost/ticket/3939 #3939]).
+* Added new `non_blocking()` functions for managing the non-blocking behaviour
+ of a socket or descriptor. The `io_control()` commands named `non_blocking_io`
+ are now deprecated in favour of these new functions.
+* Added new `native_non_blocking()` functions for managing the non-blocking
+ mode of the underlying socket or descriptor. These functions are intended to
+ allow the encapsulation of arbitrary non-blocking system calls as
+ asynchronous operations, in a way that is transparent to the user of the
+ socket object. The functions have no effect on the behaviour of the
+ synchronous operations of the socket or descriptor.
+* Added the `io_control()` member function for socket acceptors
+ ([@https://svn.boost.org/trac/boost/ticket/3297 #3297]).
+* Added a `release()` member function to posix descriptors. This function
+ releases ownership of the underlying native descriptor to the caller.
+ Addresses [@https://svn.boost.org/trac/boost/ticket/3900 #3900].
+* Added support for sequenced packet sockets (`SOCK_SEQPACKET`).
+* Added a new `io_service::stopped()` function that can be used to determine
+ whether the `io_service` has stopped (i.e. a `reset()` call is needed prior
+ to any further calls to `run()`, `run_one()`, `poll()` or `poll_one()`).
+* For consistency with the C++0x standard library, deprecated the `native_type`
+ typedefs in favour of `native_handle_type`, and the `native()` member
+ functions in favour of `native_handle()`.
+* Added support for C++0x move construction and assignment to sockets, serial
+ ports, POSIX descriptors and Windows handles.
+* Reduced the copying of handler function objects.
+* Added support for C++0x move construction to further reduce (and in some
+ cases eliminate) copying of handler objects.
+* Added support for the `fork()` system call. Programs that use `fork()` must
+ call `io_service.notify_fork()` at the appropriate times. Two new examples
+ have been added showing how to use this feature. Addresses
+ [@https://svn.boost.org/trac/boost/ticket/3238 #3238],
+ [@https://svn.boost.org/trac/boost/ticket/4162 #4162].
+* Cleaned up the handling of errors reported by the `close()` system call. In
+ particular, assume that most operating systems won't have `close()` fail with
+ `EWOULDBLOCK`, but if it does then set the blocking mode and restart the call.
+ If any other error occurs, assume the descriptor is closed. Addresses
+ [@https://svn.boost.org/trac/boost/ticket/3307 #3307].
+* Added new `asio::buffer()` overloads for `std::array`, when available.
+* Changed the implementation to use the C++0x standard library templates
+ `array`, `shared_ptr`, `weak_ptr` and `atomic` when they are available,
+ rather than the Boost equivalents.
+* Use C++0x variadic templates when available, rather than generating function
+ overloads using Boost.Preprocessor.
+* Changed exception reporting to include the function name in exception `what()`
+* Fixed insufficient initialisers warning with MinGW.
+* Changed the `shutdown_service()` member functions to be private.
+* Added archetypes for testing socket option functions.
+* Changed the Boost.Asio examples so that they don't use Boost.Thread's
+ convenience header. Use the header file that is specifically for the
+ boost::thread class instead.
+* Removed the dependency on OS-provided macros for the well-known IPv4 and IPv6
+ addresses. This should eliminate annoying "missing braces around initializer"
+ warnings ([@https://svn.boost.org/trac/boost/ticket/3741 #3741]).
+* Reduced the size of `ip::basic_endpoint<>` objects (such as
+ `ip::tcp::endpoint` and `ip::udp::endpoint`).
+* Changed the reactor backends to assume that any descriptors or sockets added
+ using `assign()` may have been `dup()`-ed, and so require explicit
+ deregistration from the reactor
+ ([@https://svn.boost.org/trac/boost/ticket/4971 #4971]).
+* Removed the deprecated member functions named `io_service()`. The
+ `get_io_service()` member functions should be used instead.
+* Removed the deprecated typedefs `resolver_query` and `resolver_iterator` from
+ the `ip::tcp`, `ip::udp` and `ip::icmp` classes.
+* Modified the `buffers_iterator<>` and `ip::basic_resolver_iterator` classes
+ so that the value_type typedefs are non-const byte types.
+* Fixed warnings reported by g++'s [^-Wshadow] compiler option
+ ([@https://svn.boost.org/trac/boost/ticket/3905 #3905]).
+* Added an explicit cast to convert the `FIONBIO` constant to int, to suppress
+ a compiler warning on some platforms
+ ([@https://svn.boost.org/trac/boost/ticket/5128 #5128]).
+* Changed most examples to treat a failure by an accept operation as non-fatal
+ ([@https://svn.boost.org/trac/boost/ticket/5124 #5124]).
+* Fixed an error in the [^tick_count_timer] example by making the duration type
+ signed. Previously, a wait on an already-passed deadline would not return for
+ a very long time ([@https://svn.boost.org/trac/boost/ticket/5418 #5418]).
+[heading Asio 1.4.9 / Boost 1.46.1]
+* `EV_ONESHOT` seems to cause problems on some versions of Mac OS X, with the
+ `io_service` destructor getting stuck inside the `close()` system call.
+ Changed the kqueue backend to use `EV_CLEAR` instead
+ ([@https://svn.boost.org/trac/boost/ticket/5021 #5021]).
+* Fixed compile failures with some versions of [^g++] due to the use of
+ anonymous enums ([@https://svn.boost.org/trac/boost/ticket/4883 #4883]).
+* Fixed a bug on kqueue-based platforms, where some system calls that
+ repeatedly fail with `EWOULDBLOCK` are not correctly re-registered with
+* Changed `asio::streambuf` to ensure that its internal pointers are updated
+ correctly after the data has been modified using `std::streambuf` member
+* Fixed a bug that prevented the linger socket option from working on platforms
+ other than Windows.
[heading Asio 1.4.8 / Boost 1.46]
-* Fixed an integer overflow problem that occurs when `ip::address_v4::netmask()`
- is used on 64-bit platforms.
+* Fixed an integer overflow problem that occurs when
+ `ip::address_v4::broadcast()` is used on 64-bit platforms.
* Fixed a problem on older Linux kernels (where epoll is used without timerfd
support) that prevents timely delivery of deadline_timer handlers, after the
program has been running for some time
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