move to nonisolated(nonsending)

Author: ktoso

stdlib/public/Concurrency/TaskCancellation.swift

@@ -70,9 +70,9 @@ import Swift
 #if !$Embedded
 @backDeployed(before: SwiftStdlib 6.2)
 #endif
-@execution(caller)
+nonisolated(nonsending)
 public func withTaskCancellationHandler<T>(
-  operation: @execution(caller) () async throws -> T,
+  operation: nonisolated(nonsending) () async throws -> T,
   onCancel handler: @Sendable () -> Void
 ) async rethrows -> T {
   // unconditionally add the cancellation record to the task.
@@ -85,7 +85,7 @@ public func withTaskCancellationHandler<T>(
 
 // Note: Deprecated version which would still hop if we did not close over an `isolated` parameter
 // with the operation closure. Instead, we should do what the docs of this method promise - and not hop at all,
-// by using the new @execution(caller)
+// by using the new nonisolated(nonsending)
 @available(SwiftStdlib 5.1, *)
 //#if !$Embedded
 //@backDeployed(before: SwiftStdlib 6.0)

test/abi/macOS/arm64/concurrency.swift

@@ -321,8 +321,8 @@ Added: _$sScf13checkIsolatedyyFTq
 Added: _$ss27withTaskCancellationHandler9operation8onCancel9isolationxxyYaKXE_yyYbXEScA_pSgYitYaKlF
 Added: _$ss27withTaskCancellationHandler9operation8onCancel9isolationxxyYaKXE_yyYbXEScA_pSgYitYaKlFTu
 // withTaskCancellationHandler but with caller execution
-// Swift.withTaskCancellationHandler<A>(operation: @execution(caller) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A
-// async function pointer to Swift.withTaskCancellationHandler<A>(operation: @execution(caller) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A
+// Swift.withTaskCancellationHandler<A>(operation: nonisolated(nonsending) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A
+// async function pointer to Swift.withTaskCancellationHandler<A>(operation: nonisolated(nonsending) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A
 Added: _$ss27withTaskCancellationHandler9operation8onCancelxxyYaKYCXE_yyYbXEtYaKlF
 Added: _$ss27withTaskCancellationHandler9operation8onCancelxxyYaKYCXE_yyYbXEtYaKlFTu
 

test/abi/macOS/x86_64/concurrency.swift

@@ -321,8 +321,8 @@ Added: _$sScf13checkIsolatedyyFTq
 Added: _$ss27withTaskCancellationHandler9operation8onCancel9isolationxxyYaKXE_yyYbXEScA_pSgYitYaKlF
 Added: _$ss27withTaskCancellationHandler9operation8onCancel9isolationxxyYaKXE_yyYbXEScA_pSgYitYaKlFTu
 // withTaskCancellationHandler but with caller execution
-// Swift.withTaskCancellationHandler<A>(operation: @execution(caller) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A
-// async function pointer to Swift.withTaskCancellationHandler<A>(operation: @execution(caller) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A
+// Swift.withTaskCancellationHandler<A>(operation: nonisolated(nonsending) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A
+// async function pointer to Swift.withTaskCancellationHandler<A>(operation: nonisolated(nonsending) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A
 Added: _$ss27withTaskCancellationHandler9operation8onCancelxxyYaKYCXE_yyYbXEtYaKlF
 Added: _$ss27withTaskCancellationHandler9operation8onCancelxxyYaKYCXE_yyYbXEtYaKlFTu
 

test/api-digester/stability-concurrency-abi.test

@@ -126,7 +126,7 @@ Func withTaskGroup(of:returning:body:) has mangled name changing from '_Concurre
 
 // withTaskCancellationHandler now uses caller execution
 // Old methods are kept for ABI compatibility but this test does not understand that
-Func withTaskCancellationHandler(operation:onCancel:) has mangled name changing from '_Concurrency.withTaskCancellationHandler<A>(operation: () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A' to '_Concurrency.withTaskCancellationHandler<A>(operation: @execution(caller) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A'
+Func withTaskCancellationHandler(operation:onCancel:) has mangled name changing from '_Concurrency.withTaskCancellationHandler<A>(operation: () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A' to '_Concurrency.withTaskCancellationHandler<A>(operation: nonisolated(nonsending) () async throws -> A, onCancel: @Sendable () -> ()) async throws -> A'
 Func withTaskCancellationHandler(operation:onCancel:) is now with @execution
 
 // *** DO NOT DISABLE OR XFAIL THIS TEST. *** (See comment above.)