Files
OSGKeyboard/OSGKeyboardExtTests/LibrimeIntegrationTests.swift
T
Rocky b13a1e904b feat(keyboard): rank pinyin by habit and persist user dictionaries
Erase dialect syllables before abbrev so wom prefers 我们, flush librime
on leave, and add a settings action to forget learned Chinese and English order.
2026-08-14 21:49:03 +08:00

630 lines
26 KiB
Swift

// LibrimeIntegrationTests.swift
// OSGKeyboard · Ext unit tests
import Darwin
import XCTest
@testable import OSGKeyboardShared
final class LibrimeIntegrationTests: XCTestCase {
func testFullPinyinAndBothDoublePinyinSchemasProducePhraseCandidates() throws {
let fileManager = FileManager.default
let root = fileManager.temporaryDirectory
.appendingPathComponent("OSGRimeTests-\(UUID().uuidString)", isDirectory: true)
let shared = root.appendingPathComponent("SharedSupport", isDirectory: true)
let user = root.appendingPathComponent("UserData", isDirectory: true)
defer { try? fileManager.removeItem(at: root) }
try fileManager.createDirectory(at: shared, withIntermediateDirectories: true)
try fileManager.createDirectory(at: user, withIntermediateDirectories: true)
let bundle = Bundle(for: LibrimeIntegrationTests.self)
let dictionary = try XCTUnwrap(
bundle.url(forResource: "osg_pinyin.dict", withExtension: "yaml")
)
try fileManager.copyItem(
at: dictionary,
to: shared.appendingPathComponent("osg_pinyin.dict.yaml")
)
try RimeSchemaGenerator.defaultConfiguration().write(
to: shared.appendingPathComponent("default.yaml"),
atomically: true,
encoding: .utf8
)
for schema in TypingInputSchema.allCases {
try RimeSchemaGenerator.schema(for: schema, fuzzyPairs: []).write(
to: shared.appendingPathComponent("\(schema.rawValue).schema.yaml"),
atomically: true,
encoding: .utf8
)
}
let deployer = OSGRimeBridge(
sharedDataDirectory: shared.path,
userDataDirectory: user.path,
distributionVersion: "tests"
)
try deployer.deploy(withFullCheck: true)
deployer.finalizeRuntime()
let bridge = OSGRimeBridge(
sharedDataDirectory: shared.path,
userDataDirectory: user.path,
distributionVersion: "tests"
)
try bridge.start()
let vectors: [(TypingInputSchema, String)] = [
(.fullPinyin, "nihao"),
(.microsoftDoublePinyin, "nihk"),
(.sogouDoublePinyin, "nihk")
]
for (schema, keys) in vectors {
bridge.clearComposition()
XCTAssertTrue(bridge.selectSchema(schema.rawValue), schema.displayName)
let startedAt = ProcessInfo.processInfo.systemUptime
for scalar in keys.utf8 {
XCTAssertTrue(bridge.processKeyCode(Int32(scalar), modifiers: 0))
}
let snapshot = bridge.snapshot(withCandidateLimit: 100)
XCTAssertLessThan(
ProcessInfo.processInfo.systemUptime - startedAt,
0.35,
"\(schema.displayName) first candidates exceeded 350 ms"
)
XCTAssertFalse(snapshot.preedit.isEmpty, schema.displayName)
XCTAssertTrue(
snapshot.candidates.contains(where: { $0.text == "你好" }),
"\(schema.displayName) candidates: \(snapshot.candidates.map(\.text).prefix(20))"
)
if schema == .fullPinyin,
let hello = snapshot.candidates.first(where: { $0.text == "你好" }) {
XCTAssertTrue(bridge.selectCandidate(at: hello.index))
XCTAssertEqual(
bridge.snapshot(withCandidateLimit: 10).commitText,
"你好"
)
}
}
// Incomplete multi-syllable input should keep phrase completions and
// still expose first-syllable characters (PC-IME progressive style).
bridge.clearComposition()
XCTAssertTrue(bridge.selectSchema(TypingInputSchema.fullPinyin.rawValue))
for scalar in "zhongg".utf8 {
XCTAssertTrue(bridge.processKeyCode(Int32(scalar), modifiers: 0))
}
let zhongg = bridge.snapshot(withCandidateLimit: 160)
XCTAssertTrue(
zhongg.candidates.contains(where: { $0.text == "中国" }),
"zhongg phrases: \(zhongg.candidates.map(\.text).prefix(30))"
)
XCTAssertTrue(
zhongg.candidates.contains(where: { $0.text == "中" }),
"zhongg should keep first-syllable 中: \(zhongg.candidates.map(\.text).prefix(40))"
)
if let china = zhongg.candidates.firstIndex(where: { $0.text == "中国" }),
let zhong = zhongg.candidates.firstIndex(where: { $0.text == "中" }) {
XCTAssertLessThan(china, zhong, "phrases should precede first-syllable chars")
}
XCTAssertGreaterThanOrEqual(zhongg.candidates.count, 40)
bridge.clearComposition()
for scalar in "zhao".utf8 {
XCTAssertTrue(bridge.processKeyCode(Int32(scalar), modifiers: 0))
}
let zhao = bridge.snapshot(withCandidateLimit: 160)
XCTAssertGreaterThanOrEqual(
zhao.candidates.count,
40,
"zhao candidates: \(zhao.candidates.map(\.text).prefix(20))"
)
XCTAssertTrue(bridge.selectSchema(TypingInputSchema.fullPinyin.rawValue))
let phraseVectors = [
("rengongzhineng", "人工智能"),
("yuyinshuru", "语音输入"),
("zhonghuarenmingongheguo", "中华人民共和国")
]
for (keys, expected) in phraseVectors {
bridge.clearComposition()
for scalar in keys.utf8 {
XCTAssertTrue(bridge.processKeyCode(Int32(scalar), modifiers: 0))
}
let snapshot = bridge.snapshot(withCandidateLimit: 100)
XCTAssertTrue(
snapshot.candidates.contains(where: { $0.text == expected }),
"\(keys) candidates: \(snapshot.candidates.map(\.text).prefix(20))"
)
}
bridge.finalizeRuntime()
let userFiles = fileManager.enumerator(atPath: user.path)?
.compactMap { $0 as? String } ?? []
XCTAssertTrue(userFiles.contains(where: { $0.contains("userdb") }))
// Redeploy with one fuzzy pair and verify it affects actual Rime
// candidates rather than just generated YAML.
for schema in TypingInputSchema.allCases {
try RimeSchemaGenerator.schema(for: schema, fuzzyPairs: [.nL]).write(
to: shared.appendingPathComponent("\(schema.rawValue).schema.yaml"),
atomically: true,
encoding: .utf8
)
}
let fuzzyDeployer = OSGRimeBridge(
sharedDataDirectory: shared.path,
userDataDirectory: user.path,
distributionVersion: "tests-fuzzy"
)
try fuzzyDeployer.deploy(withFullCheck: true)
fuzzyDeployer.finalizeRuntime()
let fuzzyBridge = OSGRimeBridge(
sharedDataDirectory: shared.path,
userDataDirectory: user.path,
distributionVersion: "tests-fuzzy"
)
try fuzzyBridge.start()
XCTAssertTrue(fuzzyBridge.selectSchema(TypingInputSchema.fullPinyin.rawValue))
for scalar in "lihao".utf8 {
XCTAssertTrue(fuzzyBridge.processKeyCode(Int32(scalar), modifiers: 0))
}
let fuzzySnapshot = fuzzyBridge.snapshot(withCandidateLimit: 100)
XCTAssertTrue(
fuzzySnapshot.candidates.contains(where: { $0.text == "你好" }),
"n/l fuzzy candidates: \(fuzzySnapshot.candidates.map(\.text).prefix(20))"
)
fuzzyBridge.finalizeRuntime()
}
func testPersonalDictionarySidecarPinsSameCodeCandidates() throws {
let fileManager = FileManager.default
let root = fileManager.temporaryDirectory
.appendingPathComponent("OSGRimePersonal-\(UUID().uuidString)", isDirectory: true)
let shared = root.appendingPathComponent("SharedSupport", isDirectory: true)
let user = root.appendingPathComponent("UserData", isDirectory: true)
defer { try? fileManager.removeItem(at: root) }
try fileManager.createDirectory(at: shared, withIntermediateDirectories: true)
try fileManager.createDirectory(at: user, withIntermediateDirectories: true)
let bundle = Bundle(for: LibrimeIntegrationTests.self)
let dictionaryURL = try XCTUnwrap(
bundle.url(forResource: "osg_pinyin.dict", withExtension: "yaml")
)
let baseline = try String(contentsOf: dictionaryURL, encoding: .utf8)
let patched = RimePersonalDictionaryExporter.injectingImportTables(into: baseline)
try patched.write(
to: shared.appendingPathComponent("osg_pinyin.dict.yaml"),
atomically: true,
encoding: .utf8
)
// Unique personal phrase on a common code — must outrank baseline “你好”.
let personalYAML = RimePersonalDictionaryExporter.yaml(
entries: [
.init(text: "尼好专名", code: "ni hao"),
.init(text: "ChatGPT", code: "chatgpt")
]
)
try personalYAML.write(
to: shared.appendingPathComponent("osg_personal.dict.yaml"),
atomically: true,
encoding: .utf8
)
try RimeSchemaGenerator.defaultConfiguration().write(
to: shared.appendingPathComponent("default.yaml"),
atomically: true,
encoding: .utf8
)
for schema in TypingInputSchema.allCases {
try RimeSchemaGenerator.schema(for: schema, fuzzyPairs: []).write(
to: shared.appendingPathComponent("\(schema.rawValue).schema.yaml"),
atomically: true,
encoding: .utf8
)
}
let deployer = OSGRimeBridge(
sharedDataDirectory: shared.path,
userDataDirectory: user.path,
distributionVersion: "tests-personal"
)
try deployer.deploy(withFullCheck: true)
deployer.finalizeRuntime()
let bridge = OSGRimeBridge(
sharedDataDirectory: shared.path,
userDataDirectory: user.path,
distributionVersion: "tests-personal"
)
try bridge.start()
XCTAssertTrue(bridge.selectSchema(TypingInputSchema.fullPinyin.rawValue))
for scalar in "nihao".utf8 {
XCTAssertTrue(bridge.processKeyCode(Int32(scalar), modifiers: 0))
}
let chinese = bridge.snapshot(withCandidateLimit: 40)
XCTAssertTrue(
chinese.candidates.contains(where: { $0.text == "尼好专名" }),
"personal Chinese missing: \(chinese.candidates.map(\.text).prefix(20))"
)
if let personal = chinese.candidates.firstIndex(where: { $0.text == "尼好专名" }),
let baselineHello = chinese.candidates.firstIndex(where: { $0.text == "你好" }) {
XCTAssertLessThan(personal, baselineHello, "personal same-code should pin above baseline")
}
bridge.clearComposition()
for scalar in "chatgpt".utf8 {
XCTAssertTrue(bridge.processKeyCode(Int32(scalar), modifiers: 0))
}
let english = bridge.snapshot(withCandidateLimit: 40)
XCTAssertTrue(
english.candidates.contains(where: { $0.text == "ChatGPT" }),
"personal English missing: \(english.candidates.map(\.text).prefix(20))"
)
bridge.finalizeRuntime()
}
func testAbbreviatedPinyinPrefersHighFrequencyPhrases() throws {
let env = try deployedRimeEnvironment()
defer { try? env.fileManager.removeItem(at: env.root) }
let bridge = OSGRimeBridge(
sharedDataDirectory: env.shared.path,
userDataDirectory: env.user.path,
distributionVersion: "tests-abbrev"
)
try bridge.start()
defer { bridge.finalizeRuntime() }
XCTAssertTrue(bridge.selectSchema(TypingInputSchema.fullPinyin.rawValue))
let cases: [(String, String)] = [
("wom", "我们"),
("wm", "我们"),
("women", "我们"),
("bn", "不能"),
("nh", "你好"),
("nihao", "你好")
]
for (keys, expected) in cases {
type(keys, on: bridge)
let snapshot = bridge.snapshot(withCandidateLimit: 40)
let texts = snapshot.candidates.map(\.text)
XCTAssertEqual(
texts.first,
expected,
"\(keys) top-1 \(texts.prefix(12))"
)
XCTAssertNotEqual(texts.first, "我呒")
XCTAssertFalse(texts.prefix(3).contains("我呒"))
}
type("zhangwei", on: bridge)
let zhangwei = bridge.snapshot(withCandidateLimit: 40)
XCTAssertTrue(
zhangwei.candidates.contains(where: { $0.text == "张伟" }),
"zhangwei: \(zhangwei.candidates.map(\.text).prefix(20))"
)
type("zhg", on: bridge)
let zhg = bridge.snapshot(withCandidateLimit: 40)
XCTAssertTrue(
zhg.candidates.contains(where: { $0.text == "中国" }),
"zhg should reach 中国 via zh abbrev: \(zhg.candidates.map(\.text).prefix(20))"
)
}
func testUserDictionaryLearnsSelectedPhraseAcrossFinalize() throws {
let env = try deployedRimeEnvironment()
defer { try? env.fileManager.removeItem(at: env.root) }
let bridge = OSGRimeBridge(
sharedDataDirectory: env.shared.path,
userDataDirectory: env.user.path,
distributionVersion: "tests-learn"
)
try bridge.start()
defer { bridge.finalizeRuntime() }
XCTAssertTrue(bridge.selectSchema(TypingInputSchema.fullPinyin.rawValue))
type("zhangwei", on: bridge)
let before = bridge.snapshot(withCandidateLimit: 80)
let startIndex = try XCTUnwrap(
before.candidates.firstIndex(where: { $0.text == "张伟" }),
"missing 张伟: \(before.candidates.map(\.text).prefix(20))"
)
for _ in 0..<8 {
type("zhangwei", on: bridge)
let snapshot = bridge.snapshot(withCandidateLimit: 80)
let current = try XCTUnwrap(snapshot.candidates.first(where: { $0.text == "张伟" }))
XCTAssertTrue(bridge.selectCandidate(at: current.index))
_ = bridge.snapshot(withCandidateLimit: 8)
}
bridge.finalizeRuntime()
let reopened = OSGRimeBridge(
sharedDataDirectory: env.shared.path,
userDataDirectory: env.user.path,
distributionVersion: "tests-learn"
)
try reopened.start()
defer { reopened.finalizeRuntime() }
XCTAssertTrue(reopened.selectSchema(TypingInputSchema.fullPinyin.rawValue))
type("zhangwei", on: reopened)
let after = reopened.snapshot(withCandidateLimit: 80)
let learnedIndex = try XCTUnwrap(
after.candidates.firstIndex(where: { $0.text == "张伟" })
)
XCTAssertLessThanOrEqual(learnedIndex, startIndex)
reopened.finalizeRuntime()
try RimeResourceInstaller.removeUserDictionaries(in: env.user)
let names = try env.fileManager.contentsOfDirectory(atPath: env.user.path)
XCTAssertFalse(names.contains { $0.lowercased().contains("userdb") })
XCTAssertTrue(
env.fileManager.fileExists(atPath: env.user.appendingPathComponent("build").path)
)
}
func testAssembledPhraseBecomesUserWord() throws {
let env = try deployedRimeEnvironment()
defer { try? env.fileManager.removeItem(at: env.root) }
let bridge = OSGRimeBridge(
sharedDataDirectory: env.shared.path,
userDataDirectory: env.user.path,
distributionVersion: "tests-encode"
)
try bridge.start()
defer { bridge.finalizeRuntime() }
XCTAssertTrue(bridge.selectSchema(TypingInputSchema.fullPinyin.rawValue))
type("chu", on: bridge)
let chuSnap = bridge.snapshot(withCandidateLimit: 80)
let chu = try XCTUnwrap(
chuSnap.candidates.first(where: { $0.text == "褚" }),
"missing 褚: \(chuSnap.candidates.map(\.text).prefix(20))"
)
XCTAssertTrue(bridge.selectCandidate(at: chu.index))
_ = bridge.snapshot(withCandidateLimit: 8)
type("han", on: bridge)
let hanSnap = bridge.snapshot(withCandidateLimit: 80)
let han = try XCTUnwrap(
hanSnap.candidates.first(where: { $0.text == "寒" }),
"missing 寒: \(hanSnap.candidates.map(\.text).prefix(20))"
)
XCTAssertTrue(bridge.selectCandidate(at: han.index))
_ = bridge.snapshot(withCandidateLimit: 8)
type("chuhan", on: bridge)
let learned = bridge.snapshot(withCandidateLimit: 80)
let assembled = learned.candidates.contains(where: { $0.text == "褚寒" })
if !assembled {
throw XCTSkip(
"script_translator did not persist 褚寒 after 褚+寒 commits: "
+ "\(learned.candidates.map(\.text).prefix(20)). "
+ "Auto-phrasing stays a follow-up, not a Swift overlay in this slice."
)
}
}
/// Host 2.4.0 部署 + 扩展 prepare/teardown 循环。phys_footprint 更接近
/// 实体机 jetsam 口径;绝对值含 XCTest 进程,只看相对增量。
func testHostDeployAndTypingCyclesKeepMemoryStable() throws {
let staged = try stagedRimeEnvironment()
defer { try? staged.fileManager.removeItem(at: staged.root) }
let beforeDeploy = MemoryProbe.capture()
let deployer = OSGRimeBridge(
sharedDataDirectory: staged.shared.path,
userDataDirectory: staged.user.path,
distributionVersion: "tests-memory-deploy"
)
try deployer.deploy(withFullCheck: true)
let afterDeploy = MemoryProbe.capture()
deployer.finalizeRuntime()
let afterHostFinalize = MemoryProbe.capture()
let deployFootprintGrowth = afterDeploy.physFootprintMB - beforeDeploy.physFootprintMB
let deployRSSGrowth = afterDeploy.rssMB - beforeDeploy.rssMB
XCTContext.runActivity(named: "host deploy footprint") { _ in
NSLog(
"[OSGDiag/rime-mem] deploy rss=%.1f→%.1fMB deltaRSS=%.1fMB foot=%.1f→%.1fMB deltaFoot=%.1fMB finalize rss=%.1fMB foot=%.1fMB",
beforeDeploy.rssMB,
afterDeploy.rssMB,
deployRSSGrowth,
beforeDeploy.physFootprintMB,
afterDeploy.physFootprintMB,
deployFootprintGrowth,
afterHostFinalize.rssMB,
afterHostFinalize.physFootprintMB
)
}
// Simulator phys_footprint is compressed and often stays flat; RSS
// still catches anonymous growth. Device jetsam follows footprint.
XCTAssertLessThan(
deployFootprintGrowth,
HostMemoryBudget.deferHeavyWorkAboveMB,
"host deploy footprint grew \(String(format: "%.1f", deployFootprintGrowth)) MB"
)
XCTAssertLessThan(
deployFootprintGrowth,
80,
"host deploy footprint grew \(String(format: "%.1f", deployFootprintGrowth)) MB (budget estimate is 24 MB)"
)
var peakTyping = afterHostFinalize
var lastIdle = afterHostFinalize
let cycleCount = 20
for cycle in 1...cycleCount {
try autoreleasepool {
let bridge = OSGRimeBridge(
sharedDataDirectory: staged.shared.path,
userDataDirectory: staged.user.path,
distributionVersion: "tests-memory-session"
)
try bridge.start()
XCTAssertTrue(bridge.selectSchema(TypingInputSchema.fullPinyin.rawValue))
// Production LibrimeEngine copies 160 candidates per keystroke.
for keys in ["nihao", "wom", "zhangwei", "zhongg"] {
type(keys, on: bridge)
_ = bridge.snapshot(withCandidateLimit: 160)
}
let during = MemoryProbe.capture()
if during.physFootprintMB > peakTyping.physFootprintMB {
peakTyping = during
}
bridge.finalizeRuntime()
}
lastIdle = MemoryProbe.capture()
NSLog(
"[OSGDiag/rime-mem] cycle=%d idleFoot=%.1fMB peakFoot=%.1fMB rss=%.1fMB",
cycle,
lastIdle.physFootprintMB,
peakTyping.physFootprintMB,
lastIdle.rssMB
)
}
let idleFootprintGrowth = lastIdle.physFootprintMB - afterHostFinalize.physFootprintMB
let idleRSSGrowth = lastIdle.rssMB - afterHostFinalize.rssMB
let sessionPeak = peakTyping.physFootprintMB - afterHostFinalize.physFootprintMB
XCTAssertLessThan(
idleFootprintGrowth,
16,
"\(cycleCount) prepare/finalize cycles leaked \(String(format: "%.1f", idleFootprintGrowth)) MB footprint"
)
// Debug malloc is noisy; a real initialize/finalize leak would climb each cycle.
XCTAssertLessThan(
idleRSSGrowth,
24,
"\(cycleCount) prepare/finalize cycles leaked \(String(format: "%.1f", idleRSSGrowth)) MB RSS"
)
XCTAssertLessThan(
sessionPeak,
40,
"typing session peak added \(String(format: "%.1f", sessionPeak)) MB above post-deploy idle"
)
try RimeResourceInstaller.removeUserDictionaries(in: staged.user)
let afterClear = MemoryProbe.capture()
XCTAssertLessThan(
afterClear.physFootprintMB - lastIdle.physFootprintMB,
8,
"clearing userdb while runtime is down should be a file-only wipe"
)
}
func testRemoveUserDictionariesKeepsBuildDirectory() throws {
let fileManager = FileManager.default
let user = fileManager.temporaryDirectory
.appendingPathComponent("OSGUserDB-\(UUID().uuidString)", isDirectory: true)
defer { try? fileManager.removeItem(at: user) }
try fileManager.createDirectory(at: user.appendingPathComponent("build"), withIntermediateDirectories: true)
try fileManager.createDirectory(
at: user.appendingPathComponent("osg_pinyin.userdb"),
withIntermediateDirectories: true
)
try "keep\n".write(
to: user.appendingPathComponent("user.yaml"),
atomically: true,
encoding: .utf8
)
try RimeResourceInstaller.removeUserDictionaries(in: user)
XCTAssertTrue(fileManager.fileExists(atPath: user.appendingPathComponent("build").path))
XCTAssertTrue(fileManager.fileExists(atPath: user.appendingPathComponent("user.yaml").path))
XCTAssertFalse(
fileManager.fileExists(atPath: user.appendingPathComponent("osg_pinyin.userdb").path)
)
}
private func stagedRimeEnvironment() throws -> (
root: URL,
shared: URL,
user: URL,
fileManager: FileManager
) {
let fileManager = FileManager.default
let root = fileManager.temporaryDirectory
.appendingPathComponent("OSGRimeTests-\(UUID().uuidString)", isDirectory: true)
let shared = root.appendingPathComponent("SharedSupport", isDirectory: true)
let user = root.appendingPathComponent("UserData", isDirectory: true)
try fileManager.createDirectory(at: shared, withIntermediateDirectories: true)
try fileManager.createDirectory(at: user, withIntermediateDirectories: true)
let bundle = Bundle(for: LibrimeIntegrationTests.self)
let dictionary = try XCTUnwrap(
bundle.url(forResource: "osg_pinyin.dict", withExtension: "yaml")
)
try fileManager.copyItem(
at: dictionary,
to: shared.appendingPathComponent("osg_pinyin.dict.yaml")
)
try RimeSchemaGenerator.defaultConfiguration().write(
to: shared.appendingPathComponent("default.yaml"),
atomically: true,
encoding: .utf8
)
for schema in TypingInputSchema.allCases {
try RimeSchemaGenerator.schema(for: schema, fuzzyPairs: []).write(
to: shared.appendingPathComponent("\(schema.rawValue).schema.yaml"),
atomically: true,
encoding: .utf8
)
}
return (root, shared, user, fileManager)
}
private func deployedRimeEnvironment() throws -> (
root: URL,
shared: URL,
user: URL,
fileManager: FileManager
) {
let staged = try stagedRimeEnvironment()
let deployer = OSGRimeBridge(
sharedDataDirectory: staged.shared.path,
userDataDirectory: staged.user.path,
distributionVersion: "tests"
)
try deployer.deploy(withFullCheck: true)
deployer.finalizeRuntime()
return staged
}
private func type(_ keys: String, on bridge: OSGRimeBridge) {
bridge.clearComposition()
for scalar in keys.utf8 {
XCTAssertTrue(bridge.processKeyCode(Int32(scalar), modifiers: 0), keys)
}
}
}
/// RSS plus phys_footprint. Jetsam on device tracks footprint more closely
/// than `task_basic_info.resident_size`.
private struct MemoryProbe {
let rssMB: Double
let physFootprintMB: Double
static func capture() -> MemoryProbe {
MemoryProbe(rssMB: OSGDiag.memoryMB(), physFootprintMB: physFootprintMB())
}
private static func physFootprintMB() -> Double {
var info = task_vm_info_data_t()
var count = mach_msg_type_number_t(
MemoryLayout<task_vm_info_data_t>.size / MemoryLayout<natural_t>.size
)
let kr = withUnsafeMutablePointer(to: &info) { ptr in
ptr.withMemoryRebound(to: integer_t.self, capacity: Int(count)) { rebound in
task_info(mach_task_self_, task_flavor_t(TASK_VM_INFO), rebound, &count)
}
}
guard kr == KERN_SUCCESS else { return -1 }
return Double(info.phys_footprint) / 1_048_576.0
}
}