如何通过编程快速获取我的应用程序和系统的内存使用情况

问题描述

如何通过编程快速获取我的应用程序和系统的内存使用情况?

How to get memory usage of my application and system in swift by programatically?

不仅系统，而且我的应用程序

not only system, but also my application

推荐答案

对于 Swift 3.0 ，您可以使用以下功能.

For Swift 3.0 you can use the following function.

func report_memory() {
    var taskInfo = mach_task_basic_info()
    var count = mach_msg_type_number_t(MemoryLayout<mach_task_basic_info>.size)/4
    let kerr: kern_return_t = withUnsafeMutablePointer(to: &taskInfo) {
        $0.withMemoryRebound(to: integer_t.self, capacity: 1) {
            task_info(mach_task_self_, task_flavor_t(MACH_TASK_BASIC_INFO), $0, &count)
        }
    }

    if kerr == KERN_SUCCESS {
        print("Memory used in bytes: \(taskInfo.resident_size)")
    }
    else {
        print("Error with task_info(): " +
            (String(cString: mach_error_string(kerr), encoding: String.Encoding.ascii) ?? "unknown error"))
    }
}

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