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[owned-ptr] add method PassOwnership() (#7684)

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This commit is contained in:
Abtin Keshavarzian
2022-05-12 10:14:07 -07:00
committed by GitHub
parent 6a6a1e2b25
commit f6f3a932fc
2 changed files with 15 additions and 7 deletions
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src/core/common/owned_ptr.hpp
+8
View File
@@ -144,6 +144,14 @@ public:
return pointer;
}
/**
* This method allows passing of the ownership to another `OwnedPtr` using move semantics.
*
* @returns An rvalue reference of the pointer to move from.
*
*/
OwnedPtr &&PassOwnership(void) { return static_cast<OwnedPtr &&>(*this); }
/**
* This method overload the assignment operator `=` to replace the object owned by the `OwnedPtr` with another one
* using move semantics.
tests/unit/test_smart_ptrs.cpp
+7 -7
View File
@@ -121,7 +121,7 @@ void TestOwnedPtr(void)
{
OwnedPtr<TestObject> ptr1(&obj1);
OwnedPtr<TestObject> ptr2(static_cast<OwnedPtr<TestObject> &&>(ptr1));
OwnedPtr<TestObject> ptr2(ptr1.PassOwnership());
VerifyPointer(ptr1, nullptr);
VerifyPointer(ptr2, &obj1);
@@ -209,26 +209,26 @@ void TestOwnedPtr(void)
VerifyPointer(ptr3, &obj3);
// Move from non-null (ptr1) to non-null (ptr2)
ptr2 = static_cast<OwnedPtr<TestObject> &&>(ptr1);
ptr2 = ptr1.PassOwnership();
VerifyPointer(ptr1, nullptr);
VerifyPointer(ptr2, &obj1);
VerifyOrQuit(!obj1.WasFreed());
VerifyOrQuit(obj2.WasFreed());
// Move from null (ptr1) to non-null (ptr3)
ptr3 = static_cast<OwnedPtr<TestObject> &&>(ptr1);
ptr3 = ptr1.PassOwnership();
VerifyPointer(ptr1, nullptr);
VerifyPointer(ptr3, nullptr);
VerifyOrQuit(obj3.WasFreed());
// Move from non-null (ptr2) to null (ptr1)
ptr1 = static_cast<OwnedPtr<TestObject> &&>(ptr2);
ptr1 = ptr2.PassOwnership();
VerifyPointer(ptr1, &obj1);
VerifyPointer(ptr2, nullptr);
VerifyOrQuit(!obj1.WasFreed());
// Move from null (ptr2) to null (ptr3)
ptr3 = static_cast<OwnedPtr<TestObject> &&>(ptr2);
ptr3 = ptr2.PassOwnership();
VerifyPointer(ptr2, nullptr);
VerifyPointer(ptr3, nullptr);
VerifyOrQuit(!obj1.WasFreed());
@@ -247,11 +247,11 @@ void TestOwnedPtr(void)
VerifyPointer(ptr2, nullptr);
// Move from non-null (ptr1) to itself
ptr1 = static_cast<OwnedPtr<TestObject> &&>(ptr1);
ptr1 = ptr1.PassOwnership();
VerifyPointer(ptr1, &obj1);
// Move from null (ptr2) to itself
ptr2 = static_cast<OwnedPtr<TestObject> &&>(ptr2);
ptr2 = ptr2.PassOwnership();
VerifyPointer(ptr2, nullptr);
}