Centralize support for QBasicAtomic for ints and longs

No need to redefine everywhere, since they're required to be supported.

Change-Id: I2bdbbd0b0c44871e3bd0edcf0289fc58dd50ff31
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/corelib/thread/qgenericatomic.h b/src/corelib/thread/qgenericatomic.h
index 3a213f6a25..bbdc57ca50 100644
--- a/src/corelib/thread/qgenericatomic.h
+++ b/src/corelib/thread/qgenericatomic.h
@@ -62,6 +62,19 @@ QT_END_NAMESPACE
 
 template<typename T> struct QAtomicIntegerTraits { enum { IsInteger = 0 }; };
 
+// these integers are always supported, on all platforms
+//  - int, unsigned int and char32_t are 32-bit wide
+//  - long and unsigned long might be 64-bit wide on 64-bit platforms,
+//    but 64-bit integer support is required anyway
+template<> struct QAtomicIntegerTraits<int> { enum { IsInteger = 1 }; };
+template<> struct QAtomicIntegerTraits<unsigned int> { enum { IsInteger = 1 }; };
+template<> struct QAtomicIntegerTraits<long> { enum { IsInteger = 1 }; };
+template<> struct QAtomicIntegerTraits<unsigned long> { enum { IsInteger = 1 }; };
+#ifdef Q_COMPILER_UNICODE_STRINGS
+template<> struct QAtomicIntegerTraits<char32_t>
+{ enum { IsInteger = sizeof(char32_t) == sizeof(int) ? 1 : -1 }; };
+#endif
+
 template <typename T> struct QAtomicAdditiveType
 {
     typedef T AdditiveT;