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835f274183
handler of parent task that created the group Change comment in TaskGroup.swift to enforce that only parent task can call cancelAll on the group Add tests to verify mutating of task group in child tasks will fail Radar-Id: rdar://problem/86346865
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
//===--- TaskGroup.h - ABI structures for task groups -00--------*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// Swift ABI describing task groups.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_ABI_TASK_GROUP_H
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#define SWIFT_ABI_TASK_GROUP_H
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#include "swift/ABI/Task.h"
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#include "swift/ABI/TaskStatus.h"
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#include "swift/ABI/HeapObject.h"
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#include "swift/Runtime/Concurrency.h"
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#include "swift/Runtime/Config.h"
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#include "swift/Basic/RelativePointer.h"
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#include "swift/Basic/STLExtras.h"
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namespace swift {
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/// The task group is responsible for maintaining dynamically created child tasks.
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class alignas(Alignment_TaskGroup) TaskGroup {
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public:
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// These constructors do not initialize the group instance, and the
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// destructor does not destroy the group instance; you must call
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// swift_taskGroup_{initialize,destroy} yourself.
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constexpr TaskGroup()
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: PrivateData{} {}
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void *PrivateData[NumWords_TaskGroup];
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/// Upon a future task's completion, offer it to the task group it belongs to.
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void offer(AsyncTask *completed, AsyncContext *context);
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/// Checks the cancellation status of the group.
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bool isCancelled();
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// Add a child task to the group. Always called with the status record lock of
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// the parent task held
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void addChildTask(AsyncTask *task);
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// Provide accessor for task group's status record
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TaskGroupTaskStatusRecord *getTaskRecord();
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};
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} // end namespace swift
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#endif // SWIFT_ABI_TASK_GROUP_H
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