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[Swift] Memory usage fix (#8643)

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Allows a complete reset for the underlying memory of the
_InternalByteBuffers within FlatBuffers and FlexBuffers.
This commit is contained in:
mustiikhalil
2025-07-18 18:37:58 +02:00
committed by GitHub
parent 2e49b3ba60
commit ca73ff34b7
14 changed files with 146 additions and 58 deletions
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34
tests/swift/Tests/Flatbuffers/FlatBuffersMonsterWriterTests.swift
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@@ -43,6 +43,34 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
readVerifiedMonster(fb: _data)
}
func testCreateMonsterData() {
let bytes = createMonster(withPrefix: false)
var buffer = ByteBuffer(data: bytes.data)
let monster: MyGame_Example_Monster = getRoot(byteBuffer: &buffer)
readMonster(monster: monster)
mutateMonster(fb: bytes.buffer)
readMonster(monster: monster)
}
func testCreateMonsterResetTests() {
var builder = createMonster(withPrefix: false)
var buffer = ByteBuffer(data: builder.data)
let monster: MyGame_Example_Monster = getRoot(byteBuffer: &buffer)
readMonster(monster: monster)
builder.clear()
XCTAssertEqual(builder.capacity, 1)
XCTAssertEqual(builder.size, 0)
write(fbb: &builder, prefix: false)
var _buffer = ByteBuffer(data: builder.data)
XCTAssertEqual(_buffer.capacity, 304)
let _monster: MyGame_Example_Monster = getRoot(byteBuffer: &_buffer)
readMonster(monster: _monster)
builder.clear(keepingCapacity: true)
XCTAssertEqual(builder.capacity, 512)
XCTAssertEqual(builder.size, 0)
}
func testCreateMonster() {
let bytes = createMonster(withPrefix: false)
// swiftformat:disable all
@@ -257,6 +285,11 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
func createMonster(withPrefix prefix: Bool) -> FlatBufferBuilder {
var fbb = FlatBufferBuilder(initialSize: 1)
write(fbb: &fbb, prefix: prefix)
return fbb
}
func write(fbb: inout FlatBufferBuilder, prefix: Bool = false) {
let names = [
fbb.create(string: "Frodo"),
fbb.create(string: "Barney"),
@@ -313,7 +346,6 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
Monster.addVectorOf(testarrayoftables: sortedArray, &fbb)
let end = Monster.endMonster(&fbb, start: mStart)
Monster.finish(&fbb, end: end, prefix: prefix)
return fbb
}
func mutateMonster(fb: ByteBuffer) {