initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/docs/doxygen/groups/funcmacro_atomic.h

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+/////////////////////////////////////////////////////////////////////////////
+// Name:        funcmacro_atomic.h
+// Purpose:     Atomic Operation function and macro group docs
+// Author:      wxWidgets team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+
+@defgroup group_funcmacro_atomic Atomic Operations
+@ingroup group_funcmacro
+
+When using multi-threaded applications, it is often required to access or
+modify memory which is shared between threads. Atomic integer and pointer
+operations are an efficient way to handle this issue (another, less efficient,
+way is to use a wxMutex or wxCriticalSection). A native implementation exists
+for Windows, Linux, Solaris and macOS; for others, a wxCriticalSection is
+used to protect the data.
+
+One particular application is reference counting (used by so-called
+@ref group_class_smartpointers "smart pointers").
+
+You should define your variable with the type wxAtomicInt in order to apply
+atomic operations to it.
+
+*/
+