include: Added \threadsafety notes to about 60 more functions.

Reference Issue #7140.

include/SDL3/SDL_mutex.h

@@ -308,6 +308,8 @@ typedef struct SDL_Mutex SDL_Mutex;
  * \returns the initialized and unlocked mutex or NULL on failure; call
  *          SDL_GetError() for more information.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_DestroyMutex
@@ -334,6 +336,8 @@ extern SDL_DECLSPEC SDL_Mutex * SDLCALL SDL_CreateMutex(void);
  *
  * \param mutex the mutex to lock.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_TryLockMutex
@@ -355,6 +359,8 @@ extern SDL_DECLSPEC void SDLCALL SDL_LockMutex(SDL_Mutex *mutex) SDL_ACQUIRE(mut
  * \param mutex the mutex to try to lock.
  * \returns true on success, false if the mutex would block.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_LockMutex
@@ -374,6 +380,8 @@ extern SDL_DECLSPEC bool SDLCALL SDL_TryLockMutex(SDL_Mutex *mutex) SDL_TRY_ACQU
  *
  * \param mutex the mutex to unlock.
  *
+ * \threadsafety This call must be paired with a previous locking call on the same thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_LockMutex
@@ -392,6 +400,8 @@ extern SDL_DECLSPEC void SDLCALL SDL_UnlockMutex(SDL_Mutex *mutex) SDL_RELEASE(m
  *
  * \param mutex the mutex to destroy.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_CreateMutex
@@ -457,6 +467,8 @@ typedef struct SDL_RWLock SDL_RWLock;
  * \returns the initialized and unlocked read/write lock or NULL on failure;
  *          call SDL_GetError() for more information.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_DestroyRWLock
@@ -497,6 +509,8 @@ extern SDL_DECLSPEC SDL_RWLock * SDLCALL SDL_CreateRWLock(void);
  *
  * \param rwlock the read/write lock to lock.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_LockRWLockForWriting
@@ -528,6 +542,8 @@ extern SDL_DECLSPEC void SDLCALL SDL_LockRWLockForReading(SDL_RWLock *rwlock) SD
  *
  * \param rwlock the read/write lock to lock.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_LockRWLockForReading
@@ -553,6 +569,8 @@ extern SDL_DECLSPEC void SDLCALL SDL_LockRWLockForWriting(SDL_RWLock *rwlock) SD
  * \param rwlock the rwlock to try to lock.
  * \returns true on success, false if the lock would block.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_LockRWLockForReading
@@ -583,6 +601,8 @@ extern SDL_DECLSPEC bool SDLCALL SDL_TryLockRWLockForReading(SDL_RWLock *rwlock)
  * \param rwlock the rwlock to try to lock.
  * \returns true on success, false if the lock would block.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_LockRWLockForWriting
@@ -607,6 +627,8 @@ extern SDL_DECLSPEC bool SDLCALL SDL_TryLockRWLockForWriting(SDL_RWLock *rwlock)
  *
  * \param rwlock the rwlock to unlock.
  *
+ * \threadsafety This call must be paired with a previous locking call on the same thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_LockRWLockForReading
@@ -627,6 +649,8 @@ extern SDL_DECLSPEC void SDLCALL SDL_UnlockRWLock(SDL_RWLock *rwlock) SDL_RELEAS
  *
  * \param rwlock the rwlock to destroy.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_CreateRWLock
@@ -670,6 +694,8 @@ typedef struct SDL_Semaphore SDL_Semaphore;
  * \returns a new semaphore or NULL on failure; call SDL_GetError() for more
  *          information.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_DestroySemaphore
@@ -689,6 +715,8 @@ extern SDL_DECLSPEC SDL_Semaphore * SDLCALL SDL_CreateSemaphore(Uint32 initial_v
  *
  * \param sem the semaphore to destroy.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_CreateSemaphore
@@ -707,6 +735,8 @@ extern SDL_DECLSPEC void SDLCALL SDL_DestroySemaphore(SDL_Semaphore *sem);
  *
  * \param sem the semaphore wait on.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_SignalSemaphore
@@ -726,6 +756,8 @@ extern SDL_DECLSPEC void SDLCALL SDL_WaitSemaphore(SDL_Semaphore *sem);
  * \param sem the semaphore to wait on.
  * \returns true if the wait succeeds, false if the wait would block.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_SignalSemaphore
@@ -746,6 +778,8 @@ extern SDL_DECLSPEC bool SDLCALL SDL_TryWaitSemaphore(SDL_Semaphore *sem);
  *                  indefinitely.
  * \returns true if the wait succeeds or false if the wait times out.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_SignalSemaphore
@@ -759,6 +793,8 @@ extern SDL_DECLSPEC bool SDLCALL SDL_WaitSemaphoreTimeout(SDL_Semaphore *sem, Si
  *
  * \param sem the semaphore to increment.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_TryWaitSemaphore
@@ -773,6 +809,8 @@ extern SDL_DECLSPEC void SDLCALL SDL_SignalSemaphore(SDL_Semaphore *sem);
  * \param sem the semaphore to query.
  * \returns the current value of the semaphore.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  */
 extern SDL_DECLSPEC Uint32 SDLCALL SDL_GetSemaphoreValue(SDL_Semaphore *sem);
@@ -806,6 +844,8 @@ typedef struct SDL_Condition SDL_Condition;
  * \returns a new condition variable or NULL on failure; call SDL_GetError()
  *          for more information.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_BroadcastCondition
@@ -821,6 +861,8 @@ extern SDL_DECLSPEC SDL_Condition * SDLCALL SDL_CreateCondition(void);
  *
  * \param cond the condition variable to destroy.
  *
+ * \threadsafety It is safe to call this function from any thread.
+ *
  * \since This function is available since SDL 3.2.0.
  *
  * \sa SDL_CreateCondition