Redundancy, error messages & warnings

[samjtro]

This will just be a long running thread dealing with the three topics in the title.

[samjtro]

We are currently having concurrency issues. I don't entirely know why this is happening, given that nothing should realistically be broken. The function in which the issue is occurring is MACD(). This should also be of note for issue #2.

Error message as follows:

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x1 addr=0x0 pc=0x3cd2c2]

goroutine 26 [running]:
sync.(*WaitGroup).state(...)
        C:/Program Files/Go/src/sync/waitgroup.go:40
sync.(*WaitGroup).Add(0x0?, 0x0?)
        C:/Program Files/Go/src/sync/waitgroup.go:63 +0x22
main.DataSlice.MACD({0xc000296000, 0x40, 0x0?}, 0x0?)
        C:/Users/samue/Workspace/Proj/go-algotrader/main.go:246 +0x7c
created by main.DataSlice.Set
        C:/Users/samue/Workspace/Proj/go-algotrader/utils.go:37 +0x2b0
exit status 2

The code for MACD() looks like this:

func (d DataSlice) MACD(wg *sync.WaitGroup) {
    var wg1 *sync.WaitGroup
    defer wg.Done()
    wg1.Add(1)
    defer wg1.Done()
    m6.Lock()

    d2 := make(DataSlice, len(d))
    copy(d, d2)

    go d2.EMA(26, wg1)

    for i, x := range d {
        for _, y := range d2 {
            macd := x.EMA - y.EMA
            d[i].MACD = macd
        }
    }

    m6.Unlock()
}

Any thoughts are welcome!

[samjtro]

We are currently having concurrency issues. I don't entirely know why this is happening, given that nothing should realistically be broken. The function in which the issue is occurring is MACD(). This should also be of note for issue #2.

Error message as follows:

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x1 addr=0x0 pc=0x3cd2c2]

goroutine 26 [running]:
sync.(*WaitGroup).state(...)
        C:/Program Files/Go/src/sync/waitgroup.go:40
sync.(*WaitGroup).Add(0x0?, 0x0?)
        C:/Program Files/Go/src/sync/waitgroup.go:63 +0x22
main.DataSlice.MACD({0xc000296000, 0x40, 0x0?}, 0x0?)
        C:/Users/samue/Workspace/Proj/go-algotrader/main.go:246 +0x7c
created by main.DataSlice.Set
        C:/Users/samue/Workspace/Proj/go-algotrader/utils.go:37 +0x2b0
exit status 2

The code for MACD() looks like this:

func (d DataSlice) MACD(wg *sync.WaitGroup) {
  var wg1 *sync.WaitGroup
  defer wg.Done()
  wg1.Add(1)
  defer wg1.Done()
  m6.Lock()

  d2 := make(DataSlice, len(d))
  copy(d, d2)

  go d2.EMA(26, wg1)

  for i, x := range d {
      for _, y := range d2 {
          macd := x.EMA - y.EMA
          d[i].MACD = macd
      }
  }

  m6.Unlock()
}

Any thoughts are welcome!

Concurrency issues solved by: a56119a6934e6e79d14c181ece095c6bb92f35fa