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implement SE 184: add allocation methods to Unsafe buffer pointers, drop all parameters from deallocation, adjust namings, and add repeated-value assignment methods

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This commit is contained in:
taylor swift
2017-11-06 14:40:15 -06:00
committed by Andrew Trick
parent c7d33e70d3
commit c85880899d
42 changed files with 561 additions and 263 deletions
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44
test/stdlib/UnsafeRawPointer.swift
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@@ -18,20 +18,20 @@ UnsafeMutableRawPointerExtraTestSuite.test("initializeMemory") {
do {
let sizeInBytes = 3 * MemoryLayout<Missile>.stride
var p1 = UnsafeMutableRawPointer.allocate(
bytes: sizeInBytes, alignedTo: MemoryLayout<Missile>.alignment)
byteCount: sizeInBytes, alignment: MemoryLayout<Missile>.alignment)
defer {
p1.deallocate(bytes: sizeInBytes, alignedTo: MemoryLayout<Missile>.alignment)
p1.deallocate()
}
var ptrM = p1.initializeMemory(as: Missile.self, to: Missile(1))
p1.initializeMemory(as: Missile.self, at: 1, count: 2, to: Missile(2))
var ptrM = p1.initializeMemory(as: Missile.self, repeating: Missile(1), count: 1)
(p1 + MemoryLayout<Missile>.stride).initializeMemory(as: Missile.self, repeating: Missile(2), count: 2)
expectEqual(1, ptrM[0].number)
expectEqual(2, ptrM[1].number)
expectEqual(2, ptrM[2].number)
var p2 = UnsafeMutableRawPointer.allocate(
bytes: sizeInBytes, alignedTo: MemoryLayout<Missile>.alignment)
byteCount: sizeInBytes, alignment: MemoryLayout<Missile>.alignment)
defer {
p2.deallocate(bytes: sizeInBytes, alignedTo: MemoryLayout<Missile>.alignment)
p2.deallocate()
}
let ptrM2 = p2.moveInitializeMemory(as: Missile.self, from: ptrM, count: 3)
defer {
@@ -57,9 +57,9 @@ UnsafeMutableRawPointerExtraTestSuite.test("initializeMemory") {
UnsafeMutableRawPointerExtraTestSuite.test("bindMemory") {
let sizeInBytes = 3 * MemoryLayout<Int>.stride
var p1 = UnsafeMutableRawPointer.allocate(
bytes: sizeInBytes, alignedTo: MemoryLayout<Int>.alignment)
byteCount: sizeInBytes, alignment: MemoryLayout<Int>.alignment)
defer {
p1.deallocate(bytes: sizeInBytes, alignedTo: MemoryLayout<Int>.alignment)
p1.deallocate()
}
let ptrI = p1.bindMemory(to: Int.self, capacity: 3)
let bufI = UnsafeMutableBufferPointer(start: ptrI, count: 3)
@@ -75,9 +75,9 @@ UnsafeMutableRawPointerExtraTestSuite.test("bindMemory") {
UnsafeMutableRawPointerExtraTestSuite.test("load/store") {
let sizeInBytes = 3 * MemoryLayout<Int>.stride
var p1 = UnsafeMutableRawPointer.allocate(
bytes: sizeInBytes, alignedTo: MemoryLayout<Int>.alignment)
byteCount: sizeInBytes, alignment: MemoryLayout<Int>.alignment)
defer {
p1.deallocate(bytes: sizeInBytes, alignedTo: MemoryLayout<Int>.alignment)
p1.deallocate()
}
let ptrI = p1.initializeMemory(as: Int.self, from: 1...3)
defer {
@@ -94,14 +94,14 @@ UnsafeMutableRawPointerExtraTestSuite.test("load/store") {
expectEqual(6, p1.load(fromByteOffset: 2 * MemoryLayout<Int>.stride, as: Int.self))
}
UnsafeMutableRawPointerExtraTestSuite.test("copyBytes") {
UnsafeMutableRawPointerExtraTestSuite.test("copyMemory") {
let sizeInBytes = 4 * MemoryLayout<Int>.stride
var rawPtr = UnsafeMutableRawPointer.allocate(
bytes: sizeInBytes, alignedTo: MemoryLayout<Int>.alignment)
byteCount: sizeInBytes, alignment: MemoryLayout<Int>.alignment)
defer {
rawPtr.deallocate(bytes: sizeInBytes, alignedTo: MemoryLayout<Int>.alignment)
rawPtr.deallocate()
}
let ptrI = rawPtr.initializeMemory(as: Int.self, count: 4, to: 42)
let ptrI = rawPtr.initializeMemory(as: Int.self, repeating: 42, count: 4)
defer {
ptrI.deinitialize(count: 4)
}
@@ -109,32 +109,32 @@ UnsafeMutableRawPointerExtraTestSuite.test("copyBytes") {
// Right overlap
ptrI[0] = 1
ptrI[1] = 2
(rawPtr + MemoryLayout<Int>.stride).copyBytes(
from: roPtr, count: 2 * MemoryLayout<Int>.stride)
(rawPtr + MemoryLayout<Int>.stride).copyMemory(
from: roPtr, byteCount: 2 * MemoryLayout<Int>.stride)
expectEqual(1, ptrI[1])
expectEqual(2, ptrI[2])
// Left overlap
ptrI[1] = 2
ptrI[2] = 3
rawPtr.copyBytes(
from: roPtr + MemoryLayout<Int>.stride, count: 2 * MemoryLayout<Int>.stride)
rawPtr.copyMemory(
from: roPtr + MemoryLayout<Int>.stride, byteCount: 2 * MemoryLayout<Int>.stride)
expectEqual(2, ptrI[0])
expectEqual(3, ptrI[1])
// Disjoint:
ptrI[2] = 2
ptrI[3] = 3
rawPtr.copyBytes(
from: roPtr + 2 * MemoryLayout<Int>.stride, count: 2 * MemoryLayout<Int>.stride)
rawPtr.copyMemory(
from: roPtr + 2 * MemoryLayout<Int>.stride, byteCount: 2 * MemoryLayout<Int>.stride)
expectEqual(2, ptrI[0])
expectEqual(3, ptrI[1])
// Backwards
ptrI[0] = 0
ptrI[1] = 1
(rawPtr + 2 * MemoryLayout<Int>.stride).copyBytes(
from: roPtr, count: 2 * MemoryLayout<Int>.stride)
(rawPtr + 2 * MemoryLayout<Int>.stride).copyMemory(
from: roPtr, byteCount: 2 * MemoryLayout<Int>.stride)
expectEqual(0, ptrI[2])
expectEqual(1, ptrI[3])
}