68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import (
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"fmt"
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"io/ioutil"
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"github.com/inancgumus/learngo/16-slices/exercises/24-fix-the-memory-leak/api"
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)
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// ---------------------------------------------------------
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// EXERCISE: Fix the memory leak
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//
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// You receive millions of temperature data points from
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// an API, but you only need the last 10 data points.
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//
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// Currently, there is a memory leak in your program.
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// Find the leak and fix it.
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//
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//
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// EXPECTED OUTPUT
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//
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// > Memory Usage: 116 KB
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// > Memory Usage: 118 KB
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//
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//
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// EXPECTED OUTPUT EXPLANATION
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//
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// Your output will be different. Your goal is to reduce the
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// difference between two measurements of the memory usage.
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//
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// For the expected output above:
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//
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// 118 KB - 116 KB = Only 2 KB so that's OK.
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//
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// However, in the current program, because of the memory leak,
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// the difference is huge: about ~60 MB. Run the program and,
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// see yourself.
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//
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// ---------------------------------------------------------
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func main() {
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// reports the initial memory usage
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api.Report()
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// reads 65 MB of temperature data into the memory!
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temps := api.Read()
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// -----------------------------------------------------
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// ✪ ONLY ADD YOUR CODE INSIDE THIS BOX ✪
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//
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//
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// ✪ ONLY ADD YOUR CODE INSIDE THIS BOX ✪
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// -----------------------------------------------------
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// fix the problem so that the memory usage stays low
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// dont touch this code
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api.Report()
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fmt.Fprintln(ioutil.Discard, temps[0])
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}
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