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Bug 1056356 - Allow calling NewRunnableMethod() with a const pointer to the callee object. r=froydnj

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--HG--
extra : rebase_source : 2cd101c22d0992acedccf50e7f5880a268cef199
This commit is contained in:
Botond Ballo 2015-07-29 19:51:36 -04:00
parent 1ad5e05028
commit a7263cd695
1 changed files with 13 additions and 0 deletions
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13
ipc/chromium/src/base/task.h
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@ -267,6 +267,19 @@ struct RunnableMethodTraits {
}
};
// This allows using the NewRunnableMethod() functions with a const pointer
// to the callee object. See the similar support in nsRefPtr for a rationale
// of why this is reasonable.
template <class T>
struct RunnableMethodTraits<const T> {
static void RetainCallee(const T* obj) {
const_cast<T*>(obj)->AddRef();
}
static void ReleaseCallee(const T* obj) {
const_cast<T*>(obj)->Release();
}
};
// RunnableMethod and RunnableFunction -----------------------------------------
//
// Runnable methods are a type of task that call a function on an object when