I have written a script that visits all directories in the current directory and executes a command. In my case, "git pull".

When running the script serially, everything is fine. All git repositories are pulled.

But I'd like to pull multiple repositories in parallel to speed things up.
So I've changed my loop
from foreach(entry; dirs)
   to foreach(entry; parallel(dirs))

After a while that the program is running I get:
std.exception.ErrnoException@std\stdio.d(638): Could not close file `HANDLE(C0)'
 (No error)
----------------
0x00411E5C
0x0040B8AB
0x0040A146
0x00402288
0x00403A99
0x00413B95
0x004095FC
0x00439AA0
0x770992B2 in RtlInitializeExceptionChain
0x77099285 in RtlInitializeExceptionChain
object.Error@(0): Access Violation
----------------
0x00439429
0x0043A277
0x00411ECD
0x763A9B2C in GetFileAttributesW

Here is the code: http://pastebin.com/Tk0TBGxs

bump

On Monday, 13 July 2015 at 09:46:26 UTC, Minas Mina wrote:
> I have written a script that visits all directories in the current directory and executes a command. In my case, "git pull".
>
> When running the script serially, everything is fine. All git repositories are pulled.
>
> But I'd like to pull multiple repositories in parallel to speed things up.
> So I've changed my loop
> from foreach(entry; dirs)
>    to foreach(entry; parallel(dirs))
>
> After a while that the program is running I get:
> std.exception.ErrnoException@std\stdio.d(638): Could not close file `HANDLE(C0)'
>  (No error)
> ----------------
> 0x00411E5C
> 0x0040B8AB
> 0x0040A146
> 0x00402288
> 0x00403A99
> 0x00413B95
> 0x004095FC
> 0x00439AA0
> 0x770992B2 in RtlInitializeExceptionChain
> 0x77099285 in RtlInitializeExceptionChain
> object.Error@(0): Access Violation
> ----------------
> 0x00439429
> 0x0043A277
> 0x00411ECD
> 0x763A9B2C in GetFileAttributesW
>
> Here is the code: http://pastebin.com/Tk0TBGxs

Probably this is a Windows only problem. I tried the following code on my Linux machine and I didn't get any exception like yours:
https://gist.github.com/ZombineDev/e1e48a18a22d4fc85e8d

Can you run my code just so we can confirm that the problem is in the Windows implementation and not in your code? Also what compiler version are you using? If you don't get exception while using your code, it would be better if you could show me a complete code snippet so the issue can be reproduced.

On Fri, 17 Jul 2015 22:53:55 +0000, Minas Mina wrote:

> bump

sorry, i was wrong about GC non-calling. yet we still need more info: how long it works before crashing, how much threads it runs, how many "git clone" commands were ok before crach, what DMD version are you using, and *full* source code that reproduces crash, preferably without needing to clone 100500 repositories. ;-)

seems that you hit a bug in runtime or compiler, so we need as much info as you can provide to localize the bug.

On Sunday, 19 July 2015 at 13:41:19 UTC, ketmar wrote:
> On Fri, 17 Jul 2015 22:53:55 +0000, Minas Mina wrote:
>
>> bump
>
> sorry, i was wrong about GC non-calling. yet we still need more info: how long it works before crashing, how much threads it runs, how many "git clone" commands were ok before crach, what DMD version are you using, and *full* source code that reproduces crash, preferably without needing to clone 100500 repositories. ;-)
>
> seems that you hit a bug in runtime or compiler, so we need as much info as you can provide to localize the bug.

I encounter this error all the time with my project - https://github.com/beast-lang/compiler just compile compiler and testsuite and run testsuite