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Handle different ThreadDestructor signatures between Android NDK 27 and NDK 28 #3249

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Merged
merged 3 commits into from
May 23, 2025
+21 −1
Merged

Handle different ThreadDestructor signatures between Android NDK 27 and NDK 28 #3249

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5f63283
Handle different ThreadDestructor signatures between Android NDK 27 a…
marcprux May 18, 2025
b6e340c
Fix formatting for coerceThreadDestructor
marcprux May 19, 2025
81af567
Merge branch 'main' into ndk-threaddestructor-sig
marcprux May 23, 2025
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22 changes: 21 additions & 1 deletion Sources/NIOPosix/ThreadPosix.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -60,10 +60,30 @@ private func sysPthread_create(
)
#else
var handleLinux = pthread_t()
#if os(Android)
// NDK 27 signature:
// int pthread_create(pthread_t* _Nonnull __pthread_ptr, pthread_attr_t const* _Nullable __attr, void* _Nonnull (* _Nonnull __start_routine)(void* _Nonnull), void* _Nullable);
func coerceThreadDestructor(
_ destructor: @escaping ThreadDestructor
) -> (@convention(c) (UnsafeMutableRawPointer) -> UnsafeMutableRawPointer) {
destructor
}

// NDK 28 signature:
// int pthread_create(pthread_t* _Nonnull __pthread_ptr, pthread_attr_t const* _Nullable __attr, void* _Nullable (* _Nonnull __start_routine)(void* _Nullable), void* _Nullable);
func coerceThreadDestructor(
_ destructor: @escaping ThreadDestructor
) -> (@convention(c) (UnsafeMutableRawPointer?) -> UnsafeMutableRawPointer?) {
unsafeBitCast(destructor, to: (@convention(c) (UnsafeMutableRawPointer?) -> UnsafeMutableRawPointer?).self)
}
#else
// Linux doesn't change the signature
func coerceThreadDestructor(_ destructor: ThreadDestructor) -> ThreadDestructor { destructor }
#endif
let result = pthread_create(
&handleLinux,
nil,
destructor,
coerceThreadDestructor(destructor),
args
)
#endif
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