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diff --git a/gcc-4.4.3/libstdc++-v3/doc/xml/manual/evolution.xml b/gcc-4.4.3/libstdc++-v3/doc/xml/manual/evolution.xml new file mode 100644 index 000000000..19734312f --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/doc/xml/manual/evolution.xml @@ -0,0 +1,452 @@ +<sect1 id="appendix.porting.api" xreflabel="api"> +<?dbhtml filename="api.html"?> + +<sect1info> + <keywordset> + <keyword>ISO C++</keyword> + <keyword>api</keyword> + <keyword>evolution</keyword> + <keyword>deprecation</keyword> + <keyword>history</keyword> + </keywordset> +</sect1info> + +<title>API Evolution and Deprecation History</title> + +<para> +A list of user-visible changes, in chronological order +</para> + +<sect2 id="api.rel_300" xreflabel="api.rel_300"> +<title><constant>3.0</constant></title> + + <para> +Extensions moved to <filename class="directory">include/ext</filename>. + </para> + +<para> +Include files from the SGI/HP sources that pre-date the ISO standard +are added. These files are placed into +the <filename class="directory">include/backward</filename> directory and a deprecated warning +is added that notifies on inclusion (<literal>-Wno-deprecated</literal> +deactivates the warning.) +</para> + +<para>Deprecated include <filename class="headerfile">backward/strstream</filename> added.</para> + +<para>Removal of include <filename class="headerfile">builtinbuf.h</filename>, <filename class="headerfile">indstream.h</filename>, <filename class="headerfile">parsestream.h</filename>, <filename class="headerfile">PlotFile.h</filename>, <filename class="headerfile">SFile.h</filename>, <filename class="headerfile">stdiostream.h</filename>, and <filename class="headerfile">stream.h</filename>. +</para> + + + +</sect2> + +<sect2 id="api.rel_310" xreflabel="api.rel_310"> +<title><constant>3.1</constant></title> + <para> + </para> + +<para> +Extensions from SGI/HP moved from <code>namespace std</code> +to <code>namespace __gnu_cxx</code>. As part of this, the following +new includes are +added: <filename class="headerfile">ext/algorithm</filename>, <filename class="headerfile">ext/functional</filename>, <filename class="headerfile">ext/iterator</filename>, <filename class="headerfile">ext/memory</filename>, and <filename class="headerfile">ext/numeric</filename>. +</para> + +<para> +Extensions to <code>basic_filebuf</code> introduced: <code>__gnu_cxx::enc_filebuf</code>, and <code>__gnu_cxx::stdio_filebuf</code>. +</para> + +<para> +Extensions to tree data structures added in <filename class="headerfile">ext/rb_tree</filename>. +</para> + +<para> +Removal of <filename class="headerfile">ext/tree</filename>, moved to <filename class="headerfile">backward/tree.h</filename>. +</para> + +</sect2> + +<sect2 id="api.rel_320" xreflabel="api.rel_320"> +<title><constant>3.2</constant></title> + <para> + </para> +<para>Symbol versioning introduced for shared library.</para> + +<para>Removal of include <filename class="headerfile">backward/strstream.h</filename>.</para> + +<para>Allocator changes. Change <code>__malloc_alloc</code> to <code>malloc_allocator</code> and <code>__new_alloc</code> to <code>new_allocator</code>. </para> + + <para> For GCC releases from 2.95 through the 3.1 series, defining + <literal>__USE_MALLOC</literal> on the gcc command line would change the + default allocation strategy to instead use <code> malloc</code> and + <function>free</function>. See + <ulink url="../23_containers/howto.html#3">this note</ulink> + for details as to why this was something needing improvement. + </para> + + +<para>Error handling in iostreams cleaned up, made consistent. </para> + + +</sect2> + +<sect2 id="api.rel_330" xreflabel="api.rel_330"> +<title><constant>3.3</constant></title> + <para> + </para> +</sect2> + +<sect2 id="api.rel_340" xreflabel="api.rel_340"> +<title><constant>3.4</constant></title> + <para> + </para> +<para> +Large file support. +</para> + +<para> Extensions for generic characters and <code>char_traits</code> added in <filename class="headerfile">ext/pod_char_traits.h</filename>. +</para> + +<para> +Support for <code>wchar_t</code> specializations of <code>basic_filebuf</code> enhanced to support <code>UTF-8</code> and <code>Unicode</code>, depending on host. More hosts support basic <code>wchar_t</code> functionality. +</para> + +<para> +Support for <code>char_traits</code> beyond builtin types. +</para> + +<para> +Conformant <code>allocator</code> class and usage in containers. As +part of this, the following extensions are +added: <filename class="headerfile">ext/bitmap_allocator.h</filename>, <filename class="headerfile">ext/debug_allocator.h</filename>, <filename class="headerfile">ext/mt_allocator.h</filename>, <filename class="headerfile">ext/malloc_allocator.h</filename>,<filename class="headerfile">ext/new_allocator.h</filename>, <filename class="headerfile">ext/pool_allocator.h</filename>. +</para> + +<para> +This is a change from all previous versions, and may require +source-level changes due to allocator-related changes to structures +names and template parameters, filenames, and file locations. Some, +like <code>__simple_alloc, __allocator, __alloc, </code> and <code> +_Alloc_traits</code> have been removed. +</para> + +<para>Default behavior of <code>std::allocator</code> has changed.</para> + +<para> + Previous versions prior to 3.4 cache allocations in a memory + pool, instead of passing through to call the global allocation + operators (i.e., <classname>__gnu_cxx::pool_allocator</classname>). More + recent versions default to the + simpler <classname>__gnu_cxx::new_allocator</classname>. +</para> + +<para> Previously, all allocators were written to the SGI + style, and all STL containers expected this interface. This + interface had a traits class called <code>_Alloc_traits</code> that + attempted to provide more information for compile-time allocation + selection and optimization. This traits class had another allocator + wrapper, <code>__simple_alloc<T,A></code>, which was a + wrapper around another allocator, A, which itself is an allocator + for instances of T. But wait, there's more: + <code>__allocator<T,A></code> is another adapter. Many of + the provided allocator classes were SGI style: such classes can be + changed to a conforming interface with this wrapper: + <code>__allocator<T, __alloc></code> is thus the same as + <code>allocator<T></code>. + </para> + + <para> The class <classname>allocator</classname> used the typedef + <type>__alloc</type> to select an underlying allocator that + satisfied memory allocation requests. The selection of this + underlying allocator was not user-configurable. + </para> + +<table frame='all'> +<title>Extension Allocators</title> +<tgroup cols='4' align='left' colsep='1' rowsep='1'> +<colspec colname='c1'></colspec> +<colspec colname='c2'></colspec> +<colspec colname='c3'></colspec> +<colspec colname='c4'></colspec> + + <thead> + <row> + <entry>Allocator (3.4)</entry> + <entry>Header (3.4)</entry> + <entry>Allocator (3.[0-3])</entry> + <entry>Header (3.[0-3])</entry> + </row> + </thead> + + <tbody> + <row> + <entry><classname>__gnu_cxx::new_allocator<T></classname></entry> + <entry><filename class="headerfile">ext/new_allocator.h</filename></entry> + <entry><classname>std::__new_alloc</classname></entry> + <entry><filename class="headerfile">memory</filename></entry> + </row> + <row> + <entry><classname>__gnu_cxx::malloc_allocator<T></classname></entry> + <entry><filename class="headerfile">ext/malloc_allocator.h</filename></entry> + <entry><classname>std::__malloc_alloc_template<int></classname></entry> + <entry><filename class="headerfile">memory</filename></entry> + </row> + <row> + <entry><classname>__gnu_cxx::debug_allocator<T></classname></entry> + <entry><filename class="headerfile">ext/debug_allocator.h</filename></entry> + <entry><classname>std::debug_alloc<T></classname></entry> + <entry><filename class="headerfile">memory</filename></entry> + </row> + <row> + <entry><classname>__gnu_cxx::__pool_alloc<T></classname></entry> + <entry><filename class="headerfile">ext/pool_allocator.h</filename></entry> + <entry><classname>std::__default_alloc_template<bool,int></classname></entry> + <entry><filename class="headerfile">memory</filename></entry> + </row> + <row> + <entry><classname>__gnu_cxx::__mt_alloc<T></classname></entry> + <entry><filename class="headerfile">ext/mt_allocator.h</filename></entry> + <entry> </entry> + <entry> </entry> + </row> + <row> + <entry><classname>__gnu_cxx::bitmap_allocator<T></classname></entry> + <entry><filename class="headerfile">ext/bitmap_allocator.h</filename></entry> + <entry> </entry> + <entry> </entry> + </row> + </tbody> +</tgroup> +</table> + + <para> Releases after gcc-3.4 have continued to add to the collection + of available allocators. All of these new allocators are + standard-style. The following table includes details, along with + the first released version of GCC that included the extension allocator. + </para> + +<table frame='all'> +<title>Extension Allocators Continued</title> +<tgroup cols='3' align='left' colsep='1' rowsep='1'> +<colspec colname='c1'></colspec> +<colspec colname='c2'></colspec> +<colspec colname='c3'></colspec> + +<thead> + <row> + <entry>Allocator</entry> + <entry>Include</entry> + <entry>Version</entry> + </row> +</thead> + +<tbody> + <row> + <entry><classname>__gnu_cxx::array_allocator<T></classname></entry> + <entry><filename class="headerfile">ext/array_allocator.h</filename></entry> + <entry>4.0.0</entry> + </row> + <row> + <entry><classname>__gnu_cxx::throw_allocator<T></classname></entry> + <entry><filename class="headerfile">ext/throw_allocator.h</filename></entry> + <entry>4.2.0</entry> + </row> +</tbody> +</tgroup> +</table> + + +<para> +Debug mode first appears. +</para> + +<para> +Precompiled header support <acronym>PCH</acronym> support. +</para> + +<para> +Macro guard for changed, from <literal>_GLIBCPP_</literal> to <literal>_GLIBCXX_</literal>. +</para> + +<para> +Extension <filename class="headerfile">ext/stdio_sync_filebuf.h</filename> added. +</para> + +<para> +Extension <filename class="headerfile">ext/demangle.h</filename> added. +</para> + + +</sect2> + +<sect2 id="api.rel_400" xreflabel="api.rel_400"> +<title><constant>4.0</constant></title> + <para> + </para> +<para> +TR1 features first appear. +</para> + +<para> +Extension allocator <filename class="headerfile">ext/array_allocator.h</filename> added. +</para> + +<para> +Extension <code>codecvt</code> specializations moved to <filename class="headerfile">ext/codecvt_specializations.h</filename>. +</para> + +<para> +Removal of <filename class="headerfile">ext/demangle.h</filename>. +</para> + + +</sect2> + +<sect2 id="api.rel_410" xreflabel="api.rel_410"> +<title><constant>4.1</constant></title> + <para> + </para> + + +<para> +Removal of <filename class="headerfile">cassert</filename> from all standard headers: now has to be explicitly included for <code>std::assert</code> calls. +</para> + +<para> Extensions for policy-based data structures first added. New includes, +types, namespace <code>pb_assoc</code>. +</para> + + + +<para> Extensions for typelists added in <filename class="headerfile">ext/typelist.h</filename>. +</para> + +<para> Extension for policy-based <code>basic_string</code> first added: <code>__gnu_cxx::__versa_string</code> in <filename class="headerfile">ext/vstring.h</filename>. +</para> + +</sect2> + +<sect2 id="api.rel_420" xreflabel="api.rel_420"> +<title><constant>4.2</constant></title> + <para> + </para> + + +<para> Default visibility attributes applied to <code>namespace std</code>. Support for <code>-fvisibility</code>. +</para> + +<para>TR1 <filename class="headerfile">random</filename>, <filename class="headerfile">complex</filename>, and C compatibility headers added.</para> + +<para> Extensions for concurrent programming consolidated +into <filename class="headerfile">ext/concurrence.h</filename> and <filename class="headerfile">ext/atomicity.h</filename>, +including change of namespace to <code>__gnu_cxx</code> in some +cases. Added types +include <code>_Lock_policy</code>, <code>__concurrence_lock_error</code>, <code>__concurrence_unlock_error</code>, <code>__mutex</code>, <code>__scoped_lock</code>.</para> + +<para> Extensions for type traits consolidated +into <filename class="headerfile">ext/type_traits.h</filename>. Additional traits are added +(<code>__conditional_type</code>, <code>__enable_if</code>, others.) +</para> + +<para> Extensions for policy-based data structures revised. New includes, +types, namespace moved to <code>__pb_ds</code>. +</para> + +<para> Extensions for debug mode modified: now nested in <code>namespace +std::__debug</code> and extensions in <code>namespace +__gnu_cxx::__debug</code>.</para> + +<para> Extensions added: <filename class="headerfile">ext/typelist.h</filename> +and <filename class="headerfile">ext/throw_allocator.h</filename>. +</para> + +</sect2> + +<sect2 id="api.rel_430" xreflabel="api.rel_430"> +<title><constant>4.3</constant></title> + <para> + </para> + + +<para> +C++0X features first appear. +</para> + +<para>TR1 <filename class="headerfile">regex</filename> and <filename class="headerfile">cmath</filename>'s mathematical special function added.</para> + +<para> +Backward include edit. +</para> +<itemizedlist> + <listitem> + <para>Removed</para> + <para> +<filename class="headerfile">algobase.h</filename> <filename class="headerfile">algo.h</filename> <filename class="headerfile">alloc.h</filename> <filename class="headerfile">bvector.h</filename> <filename class="headerfile">complex.h</filename> +<filename class="headerfile">defalloc.h</filename> <filename class="headerfile">deque.h</filename> <filename class="headerfile">fstream.h</filename> <filename class="headerfile">function.h</filename> <filename class="headerfile">hash_map.h</filename> <filename class="headerfile">hash_set.h</filename> +<filename class="headerfile">hashtable.h</filename> <filename class="headerfile">heap.h</filename> <filename class="headerfile">iomanip.h</filename> <filename class="headerfile">iostream.h</filename> <filename class="headerfile">istream.h</filename> <filename class="headerfile">iterator.h</filename> +<filename class="headerfile">list.h</filename> <filename class="headerfile">map.h</filename> <filename class="headerfile">multimap.h</filename> <filename class="headerfile">multiset.h</filename> <filename class="headerfile">new.h</filename> <filename class="headerfile">ostream.h</filename> <filename class="headerfile">pair.h</filename> <filename class="headerfile">queue.h</filename> <filename class="headerfile">rope.h</filename> <filename class="headerfile">set.h</filename> <filename class="headerfile">slist.h</filename> <filename class="headerfile">stack.h</filename> <filename class="headerfile">streambuf.h</filename> <filename class="headerfile">stream.h</filename> <filename class="headerfile">tempbuf.h</filename> +<filename class="headerfile">tree.h</filename> <filename class="headerfile">vector.h</filename> + </para> + </listitem> + <listitem> + <para>Added</para> + <para> + <filename class="headerfile">hash_map</filename> and <filename class="headerfile">hash_set</filename> + </para> + </listitem> + <listitem> + <para>Added in C++0x</para> + <para> + <filename class="headerfile">auto_ptr.h</filename> and <filename class="headerfile">binders.h</filename> + </para> + </listitem> + +</itemizedlist> + +<para> +Header dependency streamlining. +</para> + +<itemizedlist> + <listitem><para><filename class="headerfile">algorithm</filename> no longer includes <filename class="headerfile">climits</filename>, <filename class="headerfile">cstring</filename>, or <filename class="headerfile">iosfwd</filename> </para></listitem> + <listitem><para><filename class="headerfile">bitset</filename> no longer includes <filename class="headerfile">istream</filename> or <filename class="headerfile">ostream</filename>, adds <filename class="headerfile">iosfwd</filename> </para></listitem> + <listitem><para><filename class="headerfile">functional</filename> no longer includes <filename class="headerfile">cstddef</filename></para></listitem> + <listitem><para><filename class="headerfile">iomanip</filename> no longer includes <filename class="headerfile">istream</filename>, <filename class="headerfile">istream</filename>, or <filename class="headerfile">functional</filename>, adds <filename class="headerfile">ioswd</filename> </para></listitem> + <listitem><para><filename class="headerfile">numeric</filename> no longer includes <filename class="headerfile">iterator</filename></para></listitem> + <listitem><para><filename class="headerfile">string</filename> no longer includes <filename class="headerfile">algorithm</filename> or <filename class="headerfile">memory</filename></para></listitem> + + <listitem><para><filename class="headerfile">valarray</filename> no longer includes <filename class="headerfile">numeric</filename> or <filename class="headerfile">cstdlib</filename></para></listitem> + <listitem><para><filename class="headerfile">tr1/hashtable</filename> no longer includes <filename class="headerfile">memory</filename> or <filename class="headerfile">functional</filename></para></listitem> + <listitem><para><filename class="headerfile">tr1/memory</filename> no longer includes <filename class="headerfile">algorithm</filename></para></listitem> + <listitem><para><filename class="headerfile">tr1/random</filename> no longer includes <filename class="headerfile">algorithm</filename> or <filename class="headerfile">fstream</filename></para></listitem> +</itemizedlist> + +<para> +Debug mode for <filename class="headerfile">unordered_map</filename> and <filename class="headerfile">unordered_set</filename>. +</para> + +<para> +Parallel mode first appears. +</para> + +<para>Variadic template implementations of items in <filename class="headerfile">tuple</filename> and + <filename class="headerfile">functional</filename>. +</para> + +<para>Default <code>what</code> implementations give more elaborate + exception strings for <code>bad_cast</code>, + <code>bad_typeid</code>, <code>bad_exception</code>, and + <code>bad_alloc</code>. +</para> + +<para> +PCH binary files no longer installed. Instead, the source files are installed. +</para> + +<para> +Namespace pb_ds moved to __gnu_pb_ds. +</para> + +</sect2> + +</sect1> |