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New refcount representation (#5282)

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New refcount representation and weak variable implementation. See SwiftShims/RefCount.h for details.
This commit is contained in:
Greg Parker
2017-02-24 14:19:11 -08:00
committed by GitHub
parent 60ae0443f9
commit ae1c984920
21 changed files with 2776 additions and 788 deletions
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41
unittests/runtime/Refcounting.cpp
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@@ -153,6 +153,46 @@ TEST(RefcountingTest, unowned_retain_release_n) {
EXPECT_EQ(1u, value);
}
TEST(RefcountingTest, isUniquelyReferenced) {
size_t value = 0;
auto object = allocTestObject(&value, 1);
EXPECT_EQ(0u, value);
EXPECT_TRUE(swift_isUniquelyReferenced_nonNull_native(object));
swift_retain(object);
EXPECT_FALSE(swift_isUniquelyReferenced_nonNull_native(object));
swift_release(object);
EXPECT_TRUE(swift_isUniquelyReferenced_nonNull_native(object));
swift_release(object);
EXPECT_EQ(1u, value);
}
TEST(RefcountingTest, isUniquelyReferencedOrPinned) {
size_t value = 0;
auto object = allocTestObject(&value, 1);
EXPECT_EQ(0u, value);
// RC 1, unpinned
EXPECT_TRUE(swift_isUniquelyReferencedOrPinned_nonNull_native(object));
swift_retain(object);
// RC big, unpinned
EXPECT_FALSE(swift_isUniquelyReferencedOrPinned_nonNull_native(object));
auto pinResult = swift_tryPin(object);
// RC big, pinned
EXPECT_TRUE(swift_isUniquelyReferencedOrPinned_nonNull_native(object));
swift_release(object);
// RC 1, pinned
EXPECT_TRUE(swift_isUniquelyReferencedOrPinned_nonNull_native(object));
swift_unpin(object);
swift_release(object);
EXPECT_EQ(1u, value);
}
/////////////////////////////////////////
// Non-atomic reference counting tests //
/////////////////////////////////////////
@@ -245,4 +285,3 @@ TEST(RefcountingTest, nonatomic_unknown_retain_release_n) {
EXPECT_EQ(0u, value);
EXPECT_EQ(1u, swift_retainCount(object));
}