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digitalmars.D.learn - std.parallelism example hangs compiler 2.067.1

reply "Jay Norwood" <jayn prismnet.com> writes:
This appears to hang up dmd compiler 2.067.1. Changing 
parallel(s) to s works ok. Is this a known problem?

import std.stdio;
import std.string;
import std.format;
import std.range;
import std.parallelism;

int main(string[] argv)
{

	string s[100000];
	foreach (i, ref si ; parallel(s)){
		si = format("hi:%d",i);
	}

	foreach (ref rm; s[99000..99010]){
		writeln(rm);
	}
     return 0;
}
Aug 07 2015
parent reply Steven Schveighoffer <schveiguy yahoo.com> writes:
On 8/7/15 2:19 PM, Jay Norwood wrote:

 This appears to hang up dmd compiler 2.067.1. Changing parallel(s) to s
 works ok. Is this a known problem?

 import std.stdio;
 import std.string;
 import std.format;
 import std.range;
 import std.parallelism;

 int main(string[] argv)
 {

      string s[100000];
      foreach (i, ref si ; parallel(s)){
          si = format("hi:%d",i);
      }

      foreach (ref rm; s[99000..99010]){
          writeln(rm);
      }
      return 0;
 }


When you said "hang up", I didn't understand what you meant.

Now I see, it actually hangs dmd (actually, it's not hung, it is still 
running as far as I can tell).

If I reduce to 10000, it completes the compile with an error.

I think it has to do with parallel(s).

In fact, this code also hangs:

int main(string[] argv)
{
    string s[100000];
    parallel(s);
}

In order to get what you really do want (no hangs, no errors), use this:

parallel(s[])

I'll file a bug on this.

-Steve
Aug 07 2015
parent reply Steven Schveighoffer <schveiguy yahoo.com> writes:
On 8/7/15 2:37 PM, Steven Schveighoffer wrote:


 I'll file a bug on this.


https://issues.dlang.org/show_bug.cgi?id=14886

-Steve
Aug 07 2015
parent "Jay Norwood" <jayn prismnet.com> writes:
On Friday, 7 August 2015 at 18:51:45 UTC, Steven Schveighoffer 
wrote:

 On 8/7/15 2:37 PM, Steven Schveighoffer wrote:


 I'll file a bug on this.


 https://issues.dlang.org/show_bug.cgi?id=14886

 -Steve


Thanks.  The workaround works ok.
Aug 07 2015