0001    // This source file is part of the Swift.org open source project
0002    //
0003    // Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
0004    // Licensed under Apache License v2.0 with Runtime Library Exception
0005    //
0006    // See http://swift.org/LICENSE.txt for license information
0007    // See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
0008    //
0009    //
0010    //  XCTimeUtilities.swift
0011    //  Some simple functions for working with "time intervals".
0012    //
0013    
0014    #if os(Linux) || os(FreeBSD)
0015        import Glibc
0016    #else
0017        import Darwin
0018    #endif
0019    
0020    internal typealias TimeInterval
XCTestMain.swift:39
    var duration: TimeInterval
XCTimeUtilities.swift:23
private func currentTimeIntervalSinceReferenceTime() -> TimeInterval {
XCTimeUtilities.swift:25
    let currentTime = withUnsafeMutablePointer(&tv, { (t: UnsafeMutablePointer<timeval>) -> TimeInterval in
XCTimeUtilities.swift:27
        return TimeInterval(t.memory.tv_sec) + TimeInterval(t.memory.tv_usec) / 1000000.0
XCTimeUtilities.swift:27
        return TimeInterval(t.memory.tv_sec) + TimeInterval(t.memory.tv_usec) / 1000000.0
XCTimeUtilities.swift:33
internal func measureTimeExecutingBlock(@noescape block: () -> Void) -> TimeInterval {
XCTimeUtilities.swift:42
internal func printableStringForTimeInterval(timeInterval: TimeInterval) -> String {
 = Double
0021    
0022    /// Returns the number of seconds since the reference time as a Double.
0023    private func currentTimeIntervalSinceReferenceTime
XCTimeUtilities.swift:34
    let start = currentTimeIntervalSinceReferenceTime()
XCTimeUtilities.swift:36
    let end = currentTimeIntervalSinceReferenceTime()
() -> TimeInterval {
0024        var tv = timeval()
0025        let currentTime = withUnsafeMutablePointer(&tv, { (t: UnsafeMutablePointer<timeval>) -> TimeInterval in
0026            gettimeofday(t, nil)
0027            return TimeInterval(t.memory.tv_sec) + TimeInterval(t.memory.tv_usec) / 1000000.0
0028        })
0029        return currentTime
0030    }
0031    
0032    /// Execute the given block and return the time spent during execution
0033    internal func measureTimeExecutingBlock
XCTestCase.swift:35
        let overallDuration = measureTimeExecutingBlock {
XCTestCase.swift:53
                let duration = measureTimeExecutingBlock {
XCTestMain.swift:53
    let overallDuration = measureTimeExecutingBlock {
(@noescape block: () -> Void) -> TimeInterval {
0034        let start = currentTimeIntervalSinceReferenceTime()
0035        block()
0036        let end = currentTimeIntervalSinceReferenceTime()
0037    
0038        return end - start
0039    }
0040    
0041    /// Returns a string version of the given time interval rounded to no more than 3 decimal places.
0042    internal func printableStringForTimeInterval
XCTestCase.swift:76
                XCTPrint("Test Case '\(method)' \(result) (\(printableStringForTimeInterval(duration)) seconds).")
XCTestCase.swift:91
        XCTPrint("Executed \(tests.count) test\(testCountSuffix), with \(totalFailures) failure\(failureSuffix) (\(unexpectedFailures) unexpected) in \(printableStringForTimeInterval(totalDuration)) (\(printableStringForTimeInterval(overallDuration))) seconds")
XCTestCase.swift:91
        XCTPrint("Executed \(tests.count) test\(testCountSuffix), with \(totalFailures) failure\(failureSuffix) (\(unexpectedFailures) unexpected) in \(printableStringForTimeInterval(totalDuration)) (\(printableStringForTimeInterval(overallDuration))) seconds")
XCTestMain.swift:70
    XCTPrint("Total executed \(XCTAllRuns.count) test\(testCountSuffix), with \(totalFailures) failure\(failureSuffix) (\(totalUnexpectedFailures) unexpected) in \(printableStringForTimeInterval(totalDuration)) (\(printableStringForTimeInterval(overallDuration))) seconds")
XCTestMain.swift:70
    XCTPrint("Total executed \(XCTAllRuns.count) test\(testCountSuffix), with \(totalFailures) failure\(failureSuffix) (\(totalUnexpectedFailures) unexpected) in \(printableStringForTimeInterval(totalDuration)) (\(printableStringForTimeInterval(overallDuration))) seconds")
(timeInterval: TimeInterval) -> String {
0043        return String(round(timeInterval * 1000.0) / 1000.0)
0044    }
0045