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e86389e057
- killing the advanced part (and moving its chapters in both developing Wine and Wine archi parts) - creating a new book on coding practices from i18n.sgml, patches.sgml and porting.sgml - creating a new book on some debugging strategies from the old advanced book and cvs-regression.sgml - creating a new book on the kernel modules (NTDLL & KERNEL32) from architecture.sgml / related DLLs and address-space.sgml, console.sgml, threading.sgml - creating a new book on the windowing from architecture.sgml / USER32 and related - creating a new book on the graphical parts from architecture.sgml / GDI32 and related Other changes: - removed list of DLLs and their role (from the modules overview) - removed in X11 keyboard mapping section the part related to submit a patch
41 lines
1.4 KiB
Plaintext
41 lines
1.4 KiB
Plaintext
<chapter>
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<title>Graphical modules</title>
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<sect1>
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<title>GDI Module</title>
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<sect2>
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<title>X Windows System interface</title>
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<para>
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The X libraries used to implement X clients (such as Wine)
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do not work properly if multiple threads access the same
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display concurrently. It is possible to compile the X
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libraries to perform their own synchronization (initiated
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by calling <function>XInitThreads()</function>). However,
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Wine does not use this approach. Instead Wine performs its
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own synchronization using the
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<function>wine_tsx11_lock()</function> / <function>wine_tsx11_unlock()</function>
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functions. This locking protects library access
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with a critical section, and also arranges things so that
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X libraries compiled without <option>-D_REENTRANT</option>
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(eg. with global <varname>errno</varname> variable) will
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work with Wine.
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</para>
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<para>
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In the past, all calls to X used to go through a wrapper called
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<function>TSX...()</function> (for "Thread Safe X ...").
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While it is still being used in the code, it's inefficient
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as the lock is potentially aquired and released unnecessarily.
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New code should explicitly aquire the lock.
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</para>
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</sect2>
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</sect1>
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</chapter>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-parent-document:("wine-devel.sgml" "set" "book" "part" "chapter" "")
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End:
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-->
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