Issue I’m having trouble figuring out how to correctly use sync.Cond. From what I can tell, a race condition exists between locking the Locker and invoking the condition’s Wait method. This example adds an artificial delay between the two lines
Continue readingTag: race-condition
Why is there a race condition in this program?
Issue I’m looking at the typical data races in the Golang documentation, and I don’t quite understand why there is a problem with this program: func main() { var wg sync.WaitGroup wg.Add(5) for i := 0; i < 5; i++
Continue readingCan Go routines share ownership of a channel?
Issue I understand that usually, if I wish to access an out-of-scope variable from a Go routine, it is my responsibility to create a copy to be conceptually owned by the Go routine. Is this also true for channels, or
Continue readingGolang: avoiding race conditions
Issue What are some good practices to prevent race conditions in Go? The only one I can think of is not sharing data between goroutines – the parent goroutine sends a deep copy of an object rather than the object
Continue readingGolang, race condition with local map
Issue I don’t seem to totally understand maps in Go. I have this code: fetch := map[string]int{some data} for condition { fetchlocal := map[string]int{} for key, value := range fetch { if condition { fetchlocal[key] = value } } go
Continue readingEnque and deque deadlocks the channel
Issue I am trying to implement a queue, dequeueing and requeueing in a single channel. I have two questions: why do I obtain a deadlock? I was expecting an infinite loop (since I am requeueing even elements which generate more
Continue readingWhy does the method of a struct that does not read/write its contents still cause a race case?
Issue From the Dave Cheney Blog, the following code apparently causes a race case that can be resolved merely by changing func (RPC) version() int to func (*RPC) version() int : package main import ( “fmt” “time” ) type RPC
Continue readingHow can Go's race detector be aware of lock?
Issue Adding lock to a program with race condition can solve the race condition and make the race detector quiet. How can Go’s race detector be aware of lock? Someone points out that “the race detector can only detect race
Continue readingGolang race condition when sharing channel across parallel goroutines
Issue I’m writing this example code to teach myself how to share channels across parallel goroutines and I’m hitting a race condition. The program should start as many goroutines as there are available CPUs on the system. The first goroutine
Continue readingWhy race condition with goroutine won't happen some time?
Issue I’m reading go-in-action. This example is from chapter6/listing09.go. // This sample program demonstrates how to create race // conditions in our programs. We don’t want to do this. package main import ( “fmt” “runtime” “sync” ) var ( //
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