Remove old addChild and detachChild stuff from files

Radar-Id: rdar://problem/86347801

Author: rokhinip

include/swift/Runtime/Concurrency.h

@@ -475,18 +475,6 @@ bool swift_taskGroup_hasTaskGroupRecord();
 SWIFT_EXPORT_FROM(swift_Concurrency) SWIFT_CC(swift)
 bool swift_task_hasTaskGroupStatusRecord();
 
-/// Attach a child task to its parent task and return the newly created
-/// `ChildTaskStatusRecord`.
-///
-/// The record must be removed with by the parent invoking
-/// `swift_task_detachChild` when the child has completed.
-SWIFT_EXPORT_FROM(swift_Concurrency) SWIFT_CC(swift)
-ChildTaskStatusRecord* swift_task_attachChild(AsyncTask *child);
-
-/// Remove a child task from the parent tracking it.
-SWIFT_EXPORT_FROM(swift_Concurrency) SWIFT_CC(swift)
-void swift_task_detachChild(ChildTaskStatusRecord *record);
-
 SWIFT_EXPORT_FROM(swift_Concurrency) SWIFT_CC(swift)
 size_t swift_task_getJobFlags(AsyncTask* task);
 

stdlib/public/CompatibilityOverride/CompatibilityOverrideConcurrency.def

@@ -312,14 +312,6 @@ OVERRIDE_TASK_STATUS(task_hasTaskGroupStatusRecord, bool,
                      SWIFT_EXPORT_FROM(swift_Concurrency), SWIFT_CC(swift),
                      swift::, , )
 
-OVERRIDE_TASK_STATUS(task_attachChild, ChildTaskStatusRecord *,
-                     SWIFT_EXPORT_FROM(swift_Concurrency), SWIFT_CC(swift),
-                     swift::, (AsyncTask *child), (child))
-
-OVERRIDE_TASK_STATUS(task_detachChild, void,
-                     SWIFT_EXPORT_FROM(swift_Concurrency), SWIFT_CC(swift),
-                     swift::, (ChildTaskStatusRecord *record), (record))
-
 OVERRIDE_TASK_STATUS(task_cancel, void, SWIFT_EXPORT_FROM(swift_Concurrency),
                      SWIFT_CC(swift), swift::, (AsyncTask *task), (task))
 

stdlib/public/Concurrency/TaskStatus.cpp

@@ -380,29 +380,6 @@ static bool swift_task_hasTaskGroupStatusRecordImpl() {
 /**************************************************************************/
 
 // ==== Child tasks ------------------------------------------------------------
-SWIFT_CC(swift)
-static ChildTaskStatusRecord*
-swift_task_attachChildImpl(AsyncTask *child) {
-  void *allocation = malloc(sizeof(swift::ChildTaskStatusRecord));
-  auto record = new (allocation) swift::ChildTaskStatusRecord(child);
-  SWIFT_TASK_DEBUG_LOG("attach child task = %p, record = %p, to current task = %p",
-                       child, record, swift_task_getCurrent());
-
-  bool added_record = swift_task_addStatusRecordWithChecks(
-      record, [&](ActiveTaskStatus parentStatus) {
-        swift_task_updateNewChildWithParentAndGroupState(child, parentStatus,
-                                                         NULL);
-        return true;
-      });
-  assert(added_record);
-  return record;
-}
-
-SWIFT_CC(swift)
-static void
-swift_task_detachChildImpl(ChildTaskStatusRecord *record) {
-  swift_task_removeStatusRecord(record);
-}
 
 /// Called in the path of linking a child into a parent/group synchronously with
 /// the parent task.

unittests/runtime/CompatibilityOverrideConcurrency.cpp

@@ -231,14 +231,6 @@ TEST_F(CompatibilityOverrideConcurrencyTest, task_hasTaskGroupStatusRecord) {
   swift_task_hasTaskGroupStatusRecord();
 }
 
-TEST_F(CompatibilityOverrideConcurrencyTest, test_swift_task_attachChild) {
-  swift_task_attachChild(nullptr);
-}
-
-TEST_F(CompatibilityOverrideConcurrencyTest, test_swift_task_detachChild) {
-  swift_task_detachChild(nullptr);
-}
-
 TEST_F(CompatibilityOverrideConcurrencyTest, test_swift_task_cancel) {
   swift_task_cancel(nullptr);
 }