60 lines
1017 B
Go
60 lines
1017 B
Go
package main
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import (
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"fmt"
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"sync"
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"time"
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)
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// Starvation may be with processor, memory, file descriptors,
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// connections with database and so on...
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func main() {
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var wg sync.WaitGroup
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var mutex sync.Mutex
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const runtime = 1 * time.Second
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greedyWorker := func() {
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defer wg.Done()
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var count int
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for begin := time.Now(); time.Since(begin) <= runtime; {
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mutex.Lock()
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time.Sleep(3 * time.Nanosecond)
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mutex.Unlock()
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count++
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}
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fmt.Printf("Greedy worker was able to execute %v work loops\n", count)
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}
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politeWorker := func() {
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defer wg.Done()
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var count int
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for begin := time.Now(); time.Since(begin) <= runtime; {
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mutex.Lock()
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time.Sleep(1 * time.Nanosecond)
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mutex.Unlock()
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mutex.Lock()
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time.Sleep(1 * time.Nanosecond)
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mutex.Unlock()
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mutex.Lock()
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time.Sleep(1 * time.Nanosecond)
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mutex.Unlock()
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count++
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}
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fmt.Printf("Polite worker was able to execute %v work loops.\n", count)
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}
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wg.Add(2)
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go greedyWorker()
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go politeWorker()
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wg.Wait()
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}
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