Skip to content

[Concurrency] Add a debug variable pointing to the metadata for AsyncTask. #35620

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Jan 30, 2021
Merged

[Concurrency] Add a debug variable pointing to the metadata for AsyncTask. #35620

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
30 changes: 30 additions & 0 deletions stdlib/public/Concurrency/Debug.h
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,30 @@
//===--- Debug.h - Swift Concurrency debug helpers --------------*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// Debugging and inspection support.
//
//===----------------------------------------------------------------------===//

#ifndef SWIFT_CONCURRENCY_DEBUG_H
#define SWIFT_CONCURRENCY_DEBUG_H

#include "swift/Runtime/Config.h"

namespace swift {

/// The metadata pointer used for async task objects.
SWIFT_RUNTIME_STDLIB_SPI
const void *const _swift_concurrency_debug_asyncTaskMetadata;

} // namespace swift

#endif
4 changes: 4 additions & 0 deletions stdlib/public/Concurrency/Task.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
#include "swift/Runtime/HeapObject.h"
#include "TaskPrivate.h"
#include "AsyncCall.h"
#include "Debug.h"

#include <dispatch/dispatch.h>

Expand Down Expand Up @@ -168,6 +169,9 @@ static FullMetadata<HeapMetadata> taskHeapMetadata = {
}
};

const void *const swift::_swift_concurrency_debug_asyncTaskMetadata =
static_cast<Metadata *>(&taskHeapMetadata);

/// The function that we put in the context of a simple task
/// to handle the final return.
SWIFT_CC(swift)
Expand Down