Re: What is the best practice of organization multi-threading ?
UP
Re: What is the best practice of organization multi-threading ?
On 03/15/2015 01:53 PM, Suliman wrote:
I have App that read config sections. If the section is true I want to
run it in new thread.
if (parseconfig.obsmpplots_load == true)
{
auto obsmpplots = new ObsmpPlots(db);
auto theTask = task(obsmpplots.getPlots);
theTask.executeInNewThread();
}
if(parseconfig.nadisa_load == true)
{
auto nadisa = new Nadisa(db);
auto theTask = task(nadisa.getPlots);
theTask.executeInNewThread();
}
It's seems work, but I do not sure that I doing it's right.
I don't see any problem. The threads start, do their jobs, and terminate.
If the threads need to produce results that they need to pass to their
owner (as messages), then std.concurrency is another option.
Ali
Re: What is the best practice of organization multi-threading ?
On 03/16/2015 12:04 PM, Suliman wrote: Ali, please add text above to your book! Will do. Please email me your full name at acehr...@yahoo.com so that I can add it to the Acknowledgments section. Thank you, Ali
Re: What is the best practice of organization multi-threading ?
Ali, please add text above to your book!
Re: What is the best practice of organization multi-threading ?
Ali, again big thanks for your book, without it I was not able how to work with D. But for me now absolutely clear what difference between: auto theTask = task(someFunction); and: auto theTask = task!anOperation();
Re: What is the best practice of organization multi-threading ?
On 03/16/2015 11:28 AM, Suliman wrote:
difference between:
auto theTask = task(someFunction);
and:
auto theTask = task!anOperation();
tl;dr - Prefer task!anOperation() unless you can't. :)
task() is flexible enough to take what to execute either as a function
(or delegate) pointer (task(someFunction)) or as a template parameter
(task!anOperation).
The template method is more flexible because it can take anything that
can be executed. For that reason, I would prefer task!anOperation.
However, because it is a template parameter, the Task template instances
that are generated would not have the same type (even though two
functions have the same signature). This would e.g. prevent you from
putting two Task instances in an array:
import std.parallelism;
void foo()
{}
void bar()
{}
void main()
{
auto tasks = [ task!foo(), task!bar() ]; // COMPILATION ERROR
}
Error: incompatible types for ((task()) : (task())): 'Task!(foo)*' and
'Task!(bar)*'
So, you would have to give the function as a pointer:
auto tasks = [ task(foo), task(bar) ];
However, this overload actually do the same thing behind the scenes and
calls task!run(myFunc) behind the scenes (run() is a function template
defined in parallelism.d).
Ali
What is the best practice of organization multi-threading ?
I have App that read config sections. If the section is true I
want to run it in new thread.
if (parseconfig.obsmpplots_load == true)
{
auto obsmpplots = new ObsmpPlots(db);
auto theTask = task(obsmpplots.getPlots);
theTask.executeInNewThread();
}
if(parseconfig.nadisa_load == true)
{
auto nadisa = new Nadisa(db);
auto theTask = task(nadisa.getPlots);
theTask.executeInNewThread();
}
It's seems work, but I do not sure that I doing it's right.
