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Add locking primitives for TARGET_OS_WASI in CFLocking.h #2867

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Merged
merged 2 commits into from
Sep 6, 2020
Merged

Add locking primitives for TARGET_OS_WASI in CFLocking.h #2867

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7bfa2dc
Add locking primitives for TARGET_OS_WASI in CFLocking.h
MaxDesiatov Sep 3, 2020
acbecae
Add a clarifying comment with a link to bugs.swift.org
MaxDesiatov Sep 3, 2020
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16 changes: 16 additions & 0 deletions CoreFoundation/Base.subproj/CFLocking.h
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Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,22 @@ typedef CFLock_t OSSpinLock;
#define OSSpinLockLock(lock) __CFLock(lock)
#define OSSpinLockUnlock(lock) __CFUnlock(lock)

#elif TARGET_OS_WASI

// Empty shims until https://bugs.swift.org/browse/SR-12097 is resolved.
typedef int32_t CFLock_t;
typedef CFLock_t OSSpinLock;
#define CFLockInit 0
#define CF_LOCK_INIT_FOR_STRUCTS(X) (X = CFLockInit)
#define OS_SPINLOCK_INIT CFLockInit

#define OSSpinLockLock(lock) __CFLock(lock)
#define OSSpinLockUnlock(lock) __CFUnlock(lock)
#define __CFLock(A) do {} while (0)
#define __CFUnlock(A) do {} while (0)

static inline CFLock_t __CFLockInit(void) { return CFLockInit; }

#else

#warning CF locks not defined for this platform -- CF is not thread-safe
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