What's the equivalent of sleep(), wait(), or pause()

[Sean Kelly]

Dave wrote:
> James Pelcis wrote:
>> In this case, the best solution would likely be std.c.time.
>>
>> # private import std.c.time, std.stdio;
>> #
>> # void main () {
>> #    writefln("Hello World.");
>> #    sleep(2);
>> #    writefln("Goodbye World.");
>> # }
>>
>> I don't know of any pure D ways to do this in Phobos.  The closest I 
>> could think of is in std.thread and is specifically prohibited...
>>
>> # private import std.thread, std.stdio;
>> #
>> # void main () {
>> #    writefln("Hello World.");
>> #    std.thread.Thread.getThis.wait(2000);
>> #    writefln("Goodbye World.");
>> # }
>>
>> I don't know why that is though.  My guess would be it's to cover up 
>> limitations in the operating system thread implementations.  Can 
>> anyone confirm that?
>>
> 
> There is a possibility in each of the phobos implementations (Windows 
> and Linux) for an indefinite wait to happen, so an if(this is getThis()) 
> { error(...); } check is done.
> 
> It looks like that potential is there to make these safe and still allow 
> for the calling thread to call wait(uint) on itself though.
> 
> But, I think a general purpose & portable 'sleep, msleep and/or usleep' 
> is a good idea.
> 
> sleep doesn't have > 1 sec. resolution, std.c.time.msleep is not in the 
> std. C RT lib. on Linux systems, and usleep is deprecated on Linux, so 
> the need is there for one.
> 
> Where in Phobos should this go?

As a static function in the Thread class.  See Ares for an example.


Sean