ReactiveX/RxSwift
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Adding benchmarking infrastructure.

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This commit is contained in:
Krunoslav Zaher 2015-09-27 02:25:41 +02:00
parent 2c5cc42d94
commit cee58007b1
5 changed files with 386 additions and 6 deletions
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76
RxTests/PerformanceTests/main.swift Normal file
View File

@ -0,0 +1,76 @@
//
// main.swift
// Benchmark
//
// Created by Krunoslav Zaher on 9/26/15.
// Copyright © 2015 Krunoslav Zaher. All rights reserved.
//
import Foundation
let NumberOfIterations = 1000
func approxValuePerIteration(total: Int) -> UInt64 {
return UInt64(round(Double(total) / Double(NumberOfIterations)))
}
func approxValuePerIteration(total: UInt64) -> UInt64 {
return UInt64(round(Double(total) / Double(NumberOfIterations)))
}
func measureTime(@noescape work: () -> ()) -> UInt64 {
var timebaseInfo: mach_timebase_info = mach_timebase_info()
let res = mach_timebase_info(&timebaseInfo)
assert(res == 0)
let start = mach_absolute_time()
for _ in 0 ..< NumberOfIterations {
work()
}
let timeInNano = (mach_absolute_time() - start) * UInt64(timebaseInfo.numer) / UInt64(timebaseInfo.denom)
return approxValuePerIteration(timeInNano) / 1000
}
func measureMemoryUsage(@noescape work: () -> ()) -> (bytesAllocated: UInt64, allocations: UInt64) {
let (bytes, allocations) = getMemoryInfo()
for _ in 0 ..< NumberOfIterations {
work()
}
let (bytesAfter, allocationsAfter) = getMemoryInfo()
return (approxValuePerIteration(bytesAfter - bytes), approxValuePerIteration(allocationsAfter - allocations))
}
func compareTwoImplementations(@noescape first first: () -> (), @noescape second: () -> ()) {
// first warm up to keep it fair
first()
second()
let time1 = measureTime(first)
let time2 = measureTime(second)
registerMallocHooks()
let memory1 = measureMemoryUsage(first)
let memory2 = measureMemoryUsage(second)
// this is good enough
print(String(format: "#1 implementation %8d bytes %4d allocations %5d useconds", arguments: [
memory1.bytesAllocated,
memory1.allocations,
time1
]))
print(String(format: "#2 implementation %8d bytes %4d allocations %5d useconds", arguments: [
memory2.bytesAllocated,
memory2.allocations,
time2
]))
}
compareTwoImplementations(first: {
}, second: {
})

3
RxTests/RxSwiftTests/Tests/BagTest.swift
View File

@ -11,6 +11,9 @@ import XCTest
import RxSwift
class BagTest : RxTest {
override var accumulateStatistics: Bool {
return false
}
}
extension BagTest {

27
RxTests/RxTest.swift
View File

@ -69,13 +69,29 @@ class RxTest: XCTestCase {
}
private var startResourceCount: Int32 = 0
var accumulateStatistics: Bool {
get {
return true
}
}
#if TRACE_RESOURCES
static var totalNumberOfAllocations: Int64 = 0
static var totalNumberOfAllocatedBytes: Int64 = 0
var startNumberOfAllocations: Int64 = 0
var startNumberOfAllocatedBytes: Int64 = 0
#endif
override func setUp() {
super.setUp()
// Put setup code here. This method is called before the invocation of each test method in the class.
#if TRACE_RESOURCES
self.startResourceCount = resourceCount
registerMallocHooks()
(startNumberOfAllocatedBytes, startNumberOfAllocations) = getMemoryInfo()
#endif
}
@ -85,6 +101,15 @@ class RxTest: XCTestCase {
#if TRACE_RESOURCES
XCTAssertEqual(self.startResourceCount, resourceCount)
let (endNumberOfAllocatedBytes, endNumberOfAllocations) = getMemoryInfo()
let (newBytes, newAllocations) = (endNumberOfAllocatedBytes - startNumberOfAllocatedBytes, endNumberOfAllocations - startNumberOfAllocations)
if accumulateStatistics {
RxTest.totalNumberOfAllocations += newAllocations
RxTest.totalNumberOfAllocatedBytes += newBytes
}
print("allocatedBytes = \(newBytes), allocations = \(newAllocations) (totalBytes = \(RxTest.totalNumberOfAllocatedBytes), totalAllocations = \(RxTest.totalNumberOfAllocations))")
#endif
}

203
RxTests/RxTests.xcodeproj/project.pbxproj
View File

@ -50,8 +50,12 @@
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@ -105,6 +109,18 @@
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@ -145,6 +161,9 @@
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@ -173,6 +192,13 @@
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C88BB8AF1B07E64B0064D411 /* Frameworks */ = {
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@ -193,6 +219,7 @@
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C868D0EE1BB75EA1003D1474 /* PerformanceTests */,
C81108211AF50E11001C13E4 /* Products */,
);
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@ -202,6 +229,7 @@
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name = Products;
sourceTree = "<group>";
@ -213,6 +241,7 @@
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C81108231AF50E11001C13E4 /* Supporting Files */,
C868D0F81BB76A29003D1474 /* PerformanceTools.swift */,
);
path = Tests;
sourceTree = "<group>";
@ -318,6 +347,14 @@
path = Tests;
sourceTree = "<group>";
};
C868D0EE1BB75EA1003D1474 /* PerformanceTests */ = {
isa = PBXGroup;
children = (
C868D0EF1BB75EA1003D1474 /* main.swift */,
);
path = PerformanceTests;
sourceTree = "<group>";
};
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@ -338,6 +375,23 @@
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productType = "com.apple.product-type.bundle.unit-test";
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C868D0EA1BB75EA1003D1474 /* Frameworks */,
C868D0EB1BB75EA1003D1474 /* CopyFiles */,
);
buildRules = (
);
dependencies = (
);
name = PerformanceTests;
productName = PerformanceTests;
productReference = C868D0ED1BB75EA1003D1474 /* PerformanceTests */;
productType = "com.apple.product-type.tool";
};
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isa = PBXNativeTarget;
buildConfigurationList = C88BB8B41B07E64B0064D411 /* Build configuration list for PBXNativeTarget "RxTests-OSX" */;
@ -367,6 +421,9 @@
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buildConfigurationList = C81108191AF50DDA001C13E4 /* Build configuration list for PBXProject "RxTests" */;
@ -383,6 +440,7 @@
targets = (
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C88BB88F1B07E64B0064D411 /* RxTests-OSX */,
C868D0EC1BB75EA1003D1474 /* PerformanceTests */,
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@ -412,6 +470,7 @@
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C81108671AF50E2A001C13E4 /* Observable+TimeTest.swift in Sources */,
C868D0F91BB76A29003D1474 /* PerformanceTools.swift in Sources */,
C81108551AF50E2A001C13E4 /* TestObservable.swift in Sources */,
C8E3812B1B2083C2008CDC33 /* PrimitiveMockObserver.swift in Sources */,
C811085B1AF50E2A001C13E4 /* Subscription.swift in Sources */,
@ -458,17 +517,26 @@
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C88BB8951B07E64B0064D411 /* TestObservable.swift in Sources */,
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@ -488,6 +556,7 @@
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@ -515,7 +584,6 @@
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ONLY_ACTIVE_ARCH = YES;
@ -531,7 +599,6 @@
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@ -628,7 +695,6 @@
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@ -716,6 +782,123 @@
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GCC_WARN_UNUSED_FUNCTION = YES;
GCC_WARN_UNUSED_VARIABLE = YES;
MACOSX_DEPLOYMENT_TARGET = 10.10;
MTL_ENABLE_DEBUG_INFO = NO;
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PRODUCT_NAME = "$(TARGET_NAME)";
SDKROOT = macosx;
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@ -823,6 +1006,16 @@
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defaultConfigurationIsVisible = 0;
defaultConfigurationName = Release;
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buildConfigurations = (

83
RxTests/Tests/PerformanceTools.swift Normal file
View File

@ -0,0 +1,83 @@
//
// PerformanceTools.swift
// RxTests
//
// Created by Krunoslav Zaher on 9/27/15.
//
//
import Foundation
var mallocFunctions: [(@convention(c) (UnsafeMutablePointer<_malloc_zone_t>, Int) -> UnsafeMutablePointer<Void>)] = []
var allocCalls: Int64 = 0
var bytesAllocated: Int64 = 0
func call0(p: UnsafeMutablePointer<_malloc_zone_t>, size: Int) -> UnsafeMutablePointer<Void> {
OSAtomicIncrement64(&allocCalls)
OSAtomicAdd64(Int64(size), &bytesAllocated)
return mallocFunctions[0](p, size)
}
func call1(p: UnsafeMutablePointer<_malloc_zone_t>, size: Int) -> UnsafeMutablePointer<Void> {
OSAtomicIncrement64(&allocCalls)
OSAtomicAdd64(Int64(size), &bytesAllocated)
return mallocFunctions[1](p, size)
}
var proxies: [(@convention(c) (UnsafeMutablePointer<_malloc_zone_t>, Int) -> UnsafeMutablePointer<Void>)] = [call0, call1]
func getMemoryInfo() -> (bytes: Int64, allocations: Int64) {
return (bytesAllocated, allocCalls)
}
var registeredMallocHooks = false
func registerMallocHooks() {
if registeredMallocHooks {
return
}
registeredMallocHooks = true
var _zones: UnsafeMutablePointer<vm_address_t> = UnsafeMutablePointer(nil)
var count: UInt32 = 0
// malloc_zone_print(nil, 1)
let res = malloc_get_all_zones(mach_task_self_, nil, &_zones, &count)
assert(res == 0)
let zones = UnsafeMutablePointer<UnsafeMutablePointer<malloc_zone_t>>(_zones)
assert(Int(count) <= proxies.count)
let defaultZone = malloc_default_zone()
for i in 0 ..< Int(count) {
let zoneArray = zones.advancedBy(i)
let name = malloc_get_zone_name(zoneArray.memory)
var zone = zoneArray.memory.memory
//print(String.fromCString(name))
assert(name != nil)
mallocFunctions.append(zone.malloc)
zone.malloc = proxies[i]
let protectSize = vm_size_t(sizeof(malloc_zone_t)) * vm_size_t(count)
if zone.version >= 8 {
let addressPointer = UnsafeMutablePointer<vm_address_t>(zoneArray)
let res = vm_protect(mach_task_self_, addressPointer.memory, protectSize, 0, PROT_READ | PROT_WRITE)
assert(res == 0)
}
zoneArray.memory.memory = zone
if defaultZone.memory.version == 8 {
let res = vm_protect(mach_task_self_, _zones.memory, protectSize, 0, PROT_READ)
assert(res == 0)
}
}
}