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[stdlib] Kill off _isUniquelyReferenced

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It was doing an unsafeBitCast and possibly not managing lifetimes;
replace it with more-typesafe and memory-safe calls where possible.

Swift SVN r22779
This commit is contained in:
Dave Abrahams
2014-10-15 22:25:12 +00:00
parent 4e31ae0a44
commit 56c4cb2d42
9 changed files with 40 additions and 21 deletions
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6
stdlib/core/ArrayBuffer.swift
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@@ -151,7 +151,7 @@ extension _ArrayBuffer {
/// Return true iff this buffer's storage is uniquely-referenced.
mutating func isUniquelyReferenced() -> Bool {
return Swift._isUniquelyReferenced(&storage)
return _isUniquelyReferenced_native(&storage)
}
/// Convert to an NSArray.
@@ -180,7 +180,7 @@ extension _ArrayBuffer {
mutating func requestUniqueMutableBackingBuffer(minimumCapacity: Int)
-> NativeBuffer?
{
if _fastPath(Swift._isUniquelyReferenced(&storage) && _hasMutableBuffer) {
if _fastPath(isUniquelyReferenced() && _hasMutableBuffer) {
let b = _native
if _fastPath(b.capacity >= minimumCapacity) {
return b
@@ -191,7 +191,7 @@ extension _ArrayBuffer {
public
mutating func isMutableAndUniquelyReferenced() -> Bool {
return Swift._isUniquelyReferenced(&storage) && _hasMutableBuffer
return isUniquelyReferenced() && _hasMutableBuffer
}
/// If this buffer is backed by a `_ContiguousArrayBuffer`