func main() {
runtime.GOMAXPROCS(runtime.NumCPU()) // Use all the machine's cores
if len(os.Args) != 2 || os.Args[1] == "-h" || os.Args[1] == "--help" {
fmt.Printf("usage: %s <file.log>\n", filepath.Base(os.Args[0]))
os.Exit(1)
}
lines := make(chan string, workers*4)
done := make(chan struct{}, workers)
pageMap := safemap.New()
go readLines(os.Args[1], lines)
processLines(done, pageMap, lines)
waitUntil(done)
showResults(pageMap)
}
func TestSafeMap(t *testing.T) {
store := safemap.New()
fmt.Printf("Initially has %d items\n", store.Len())
deleted := []int{0, 2, 3, 5, 7, 20, 399, 25, 30, 1000, 91, 97, 98, 99}
var waiter sync.WaitGroup
waiter.Add(1)
go func() { // Concurrent Inserter
for i := 0; i < 100; i++ {
store.Insert(fmt.Sprintf("0x%04X", i), i)
if i > 0 && i%15 == 0 {
fmt.Printf("Inserted %d items\n", store.Len())
}
}
fmt.Printf("Inserted %d items\n", store.Len())
waiter.Done()
}()
waiter.Add(1)
go func() { // Concurrent Deleter
for _, i := range deleted {
key := fmt.Sprintf("0x%04X", i)
before := store.Len()
store.Delete(key)
fmt.Printf("Deleted m[%s] (%d) before=%d after=%d\n",
key, i, before, store.Len())
}
waiter.Done()
}()
waiter.Add(1)
go func() { // Concurrent Finder
for _, i := range deleted {
for _, j := range []int{i, i + 1} {
key := fmt.Sprintf("0x%04X", j)
value, found := store.Find(key)
if found {
fmt.Printf("Found m[%s] == %d\n", key, value)
} else {
fmt.Printf("Not found m[%s] (%d)\n", key, j)
}
}
}
waiter.Done()
}()
waiter.Wait()
updater := func(value interface{}, found bool) interface{} {
if found {
return value.(int) * 1000
}
return 1
}
for _, i := range []int{5, 10, 15, 20, 25, 30, 35} {
key := fmt.Sprintf("0x%04X", i)
if value, found := store.Find(key); found {
fmt.Printf("Original m[%s] == %d\t", key, value)
store.Update(key, updater)
if value, found := store.Find(key); found {
fmt.Printf("Updated m[%s] == %5d\n", key, value)
}
}
}
fmt.Printf("Finished with %d items\n", store.Len())
// not needed here but useful if you want to free up the goroutine
data := store.Close()
fmt.Println("Closed")
fmt.Printf("len == %d\n", len(data))
//for k, v := range data { fmt.Printf("%s = %v\n", k, v) }
}