Comments (5)
for a given coroutine/scope limit parallelism to 1
this is possible with the following configuration
may::config().set_workers(1).set_io_workers(0);
pin a coroutine/scope to a specific thread (UI thread for example)
no, currently may
doesn't support coroutine thread affinity.
from may.
Wouldn't:
may::config().set_workers(1).set_io_workers(0);
set parallelism to 1 across all coroutines?
What I want to do is to have a function:
fn doStuff() {}
and all coroutines that run through it have constrained parallelism.
from may.
can Mutex
/Semphore
fullfill the requirement?
from may.
It will do the work but it seems to me that it does more work than necessary.
The scheduler already does the synchronization (fences/etc) necessary when a coroutine switches from one thread to another. If for example it happens that most of the time doStuff()
is running with 1 parallelism, having a scheduler constraint will amount to an atomic increment and decrement. Assuming the doStuff()
is not contended, this will be super fast.
Mutex seems much heavier than that. Perhaps I am missing something?
from may.
The sync primitives used in coroutine context doesn't involve system calls, and they are just running in user space which is fast.
from may.
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