From fd0d576709fff48bc23444b3a30a86e92c625101 Mon Sep 17 00:00:00 2001
From: Thiago Macieira <thiago.macieira@intel.com>
Date: Mon, 2 Dec 2013 19:39:36 -0800
Subject: 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>
---
 src/corelib/thread/qatomic.cpp      | 27 ++++++++++++++++++++++++++-
 src/corelib/thread/qgenericatomic.h | 13 +++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)

(limited to 'src/corelib/thread')

diff --git a/src/corelib/thread/qatomic.cpp b/src/corelib/thread/qatomic.cpp
index 36cdfdb369..bebdab3080 100644
--- a/src/corelib/thread/qatomic.cpp
+++ b/src/corelib/thread/qatomic.cpp
@@ -1221,9 +1221,34 @@
 
 QT_BEGIN_NAMESPACE
 
-// The following three specializations must always be defined
+// The following specializations must always be defined
 Q_STATIC_ASSERT(sizeof(QAtomicInteger<unsigned>));
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<long>));
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<unsigned long>));
 Q_STATIC_ASSERT(sizeof(QAtomicInteger<quintptr>));
 Q_STATIC_ASSERT(sizeof(QAtomicInteger<qptrdiff>));
+#ifdef Q_COMPILER_UNICODE_STRINGS
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<char32_t>));
+#endif
+
+#ifdef Q_ATOMIC_INT16_IS_SUPPORTED
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<short>));
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<unsigned short>));
+#  if WCHAR_MAX < 0x10000
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<wchar_t>));
+#  endif
+#  ifdef Q_COMPILER_UNICODE_STRINGS
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<char16_t>));
+#  endif
+#endif
+
+#ifdef Q_ATOMIC_INT64_IS_SUPPORTED
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<qint64>));
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<quint64>));
+#endif
+
+#if WCHAR_MAX == INT_MAX
+Q_STATIC_ASSERT(sizeof(QAtomicInteger<wchar_t>));
+#endif
 
 QT_END_NAMESPACE
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;
-- 
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