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thread: Locking mutexes and rwlocks are now void functions.

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Almost nothing checks these return values, and there's no reason a valid
lock should fail to operate. The cases where a lock isn't valid (it's a
bogus pointer, it was previously destroyed, a thread is unlocking a lock it
doesn't own, etc) are undefined behavior and always were, and should be
treated as an application bug.

Reference Issue #8096.
This commit is contained in:
Ryan C. Gordon
2023-10-25 10:00:26 -04:00
parent 082ef41566
commit 899eb0d042
21 changed files with 496 additions and 746 deletions
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docs/README-migration.md
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@@ -707,6 +707,8 @@ The following functions have been renamed:
## SDL_mutex.h
SDL_LockMutex and SDL_UnlockMutex now return void; if the mutex is valid (including being a NULL pointer, which returns immediately), these functions never fail. If the mutex is invalid or the caller does something illegal, like unlock another thread's mutex, this is considered undefined behavior.
The following functions have been renamed:
* SDL_CondBroadcast() => SDL_BroadcastCondition()
* SDL_CondSignal() => SDL_SignalCondition()