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small bugfixes in atomic_int_generic.h

This commit is contained in:
Paolo Cignoni 2011-12-15 17:38:34 +00:00
parent 9af315bb18
commit 3adba90ef3
1 changed files with 84 additions and 80 deletions
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22
wrap/system/multithreading/atomic_int_generic.h
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@ -13,6 +13,7 @@ public:
{
value = 0;
}
atomicInt( int value )
{
value = value;
@ -26,7 +27,7 @@ public:
*/
inline int fetchAndAddAcquire( int valueToAdd )
{
mutexlocker lock(m);
mutexlocker lock(&m);
int originalValue = value;
value += valueToAdd;
return originalValue;
@ -37,9 +38,8 @@ public:
Returns true if the new value is non-zero, false otherwise.*/
inline bool ref()
{
mutexlocker lock(m);
value++;
return value == 0;
mutexlocker lock(&m);
return ++value != 0;
}
/*
@ -47,14 +47,19 @@ public:
Returns true if the new value is non-zero, false otherwise.*/
inline bool deref()
{
mutexlocker lock(m);
value--;
return value == 0;
mutexlocker lock(&m);
return --value != 0;
}
/*
If the current value of this QAtomicInt is the expectedValue,
the test-and-set functions assign the newValue to this QAtomicInt
and return true. If the values are not the same, this function
does nothing and returns false.
*/
inline bool testAndSetOrdered(int expectedValue, int newValue)
{
mutexlocker lock(m);
mutexlocker lock(&m);
if (value == expectedValue) {
value = newValue;
return true;
@ -102,7 +107,6 @@ public:
private:
volatile int value;
mutex m;
};
}//namespace