56 lines
1.6 KiB
Diff
56 lines
1.6 KiB
Diff
Upstream-Status: Backport
|
|
|
|
8/17/2010 - rebased to 1.44 by Qing He <qing.he@intel.com>
|
|
|
|
diff --git a/boost/smart_ptr/detail/atomic_count_sync.hpp b/boost/smart_ptr/detail/atomic_count_sync.hpp
|
|
index b6359b5..78b1cc2 100644
|
|
--- a/boost/smart_ptr/detail/atomic_count_sync.hpp
|
|
+++ b/boost/smart_ptr/detail/atomic_count_sync.hpp
|
|
@@ -33,17 +33,46 @@ public:
|
|
|
|
long operator++()
|
|
{
|
|
+#ifdef __ARM_ARCH_7A__
|
|
+ int v1, tmp;
|
|
+ asm volatile ("1: \n\t"
|
|
+ "ldrex %0, %1 \n\t"
|
|
+ "add %0 ,%0, #1 \n\t"
|
|
+ "strex %2, %0, %1 \n\t"
|
|
+ "cmp %2, #0 \n\t"
|
|
+ "bne 1b \n\t"
|
|
+ : "=&r" (v1), "+Q"(value_), "=&r"(tmp)
|
|
+ );
|
|
+#else
|
|
return __sync_add_and_fetch( &value_, 1 );
|
|
+#endif
|
|
}
|
|
|
|
long operator--()
|
|
{
|
|
+#ifdef __ARM_ARCH_7A__
|
|
+ int v1, tmp;
|
|
+ asm volatile ("1: \n\t"
|
|
+ "ldrex %0, %1 \n\t"
|
|
+ "sub %0 ,%0, #1 \n\t"
|
|
+ "strex %2, %0, %1 \n\t"
|
|
+ "cmp %2, #0 \n\t"
|
|
+ "bne 1b \n\t"
|
|
+ : "=&r" (v1), "+Q"(value_), "=&r"(tmp)
|
|
+ );
|
|
+ return value_;
|
|
+#else
|
|
return __sync_add_and_fetch( &value_, -1 );
|
|
+#endif
|
|
}
|
|
|
|
operator long() const
|
|
{
|
|
+#if __ARM_ARCH_7A__
|
|
+ return value_;
|
|
+#else
|
|
return __sync_fetch_and_add( &value_, 0 );
|
|
+#endif
|
|
}
|
|
|
|
private:
|