Is there a built in way to notify a thread?
Like this:
// thread 1
const msg = wait_for_message();
zig
// not thread 1
notify_thread(1, my_message);
I see how to implement this myself, but is there something is stdlib?
#How to notify a thread
lost jackal
toxic sigil
For my own education, how would you implement this yourself? With a condition variable (which does exist in the stdlib)?
lost jackal
one semaphore per thread and a hash table with thread_id -> semaphore and a global mutex for the hash table
toxic sigil
If you have only one thread to notify, or if you have multiple and you want to unblock them all (or it doesn't matter which one you unblock first), a std.Thread.Condition would be ideal
lost jackal
on the receiving end you do Semaphore.wait and on the sending end you do global_mutex.lock() sem = hash_map.get(thread_id) sem.post()
toxic sigil
(I'm no expert in these patterns, you may already be aware)
lost jackal
yeah a broadcast could also work, and if the wrong thread is awaken it goes back to sleep
chilly laurel
Is there a built in way to notify a thread?
Like this:
```zig
// thread 1
con...
no way on std, unless you save conditions in a shared place
or something like that