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Fix join on *nix.

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This commit is contained in:
Jeroen van Rijn
2022-05-11 13:43:29 +02:00
parent ae1f5d2181
commit 56e3b7cb7d
1 changed files with 14 additions and 5 deletions
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19
core/thread/thread_unix.odin
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@@ -7,6 +7,8 @@ import "core:intrinsics"
import "core:sync"
import "core:sys/unix"
CAS :: intrinsics.atomic_compare_exchange_strong
Thread_State :: enum u8 {
Started,
Joined,
@@ -98,7 +100,7 @@ _create :: proc(procedure: Thread_Proc, priority := Thread_Priority.Normal) -> ^
}
_start :: proc(t: ^Thread) {
sync.guard(&t.mutex)
// sync.guard(&t.mutex)
t.flags += { .Started }
sync.signal(&t.cond)
}
@@ -108,15 +110,22 @@ _is_done :: proc(t: ^Thread) -> bool {
}
_join :: proc(t: ^Thread) {
sync.guard(&t.mutex)
// sync.guard(&t.mutex)
if .Joined in t.flags || unix.pthread_equal(unix.pthread_self(), t.unix_thread) {
if unix.pthread_equal(unix.pthread_self(), t.unix_thread) {
return
}
unix.pthread_join(t.unix_thread, nil)
// Preserve other flags besides `.Joined`, like `.Started`.
unjoined := intrinsics.atomic_load(&t.flags) - {.Joined}
joined := unjoined + {.Joined}
t.flags += { .Joined }
// Try to set `t.flags` from unjoined to joined. If it returns joined,
// it means the previous value had that flag set and we can return.
if res, ok := CAS(&t.flags, unjoined, joined); res == joined && !ok {
return
}
unix.pthread_join(t.unix_thread, nil)
}
_join_multiple :: proc(threads: ..^Thread) {