mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
3e64d03a52
Some notes: 1. Even though I refactored out AccessSet/Access from Exclusivity.cpp -> ExclusivityPrivate.h, I left the actual implementations of insert/remove in Exclusivity.cpp to allow for the most aggressive optimization for use in Exclusivity.cpp without exposing a bunch of internal details to other parts of the runtime. Smaller routines like getHead() and manipulating the linked list directly I left as methods that can be used by other parts of the runtime. I am going to use these methods to enable backwards deployment of exclusivity support for concurrency. 2. I moved function replacements out of the Exclusivity header/cpp files since it has nothing to do with Exclusivity beyond taking advantage of the TLS context that we are already using.
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
//===--- FunctionReplacement.h --------------------------------------------===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2021 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef SWIFT_RUNTIME_FUNCTIONREPLACEMENT_H
|
|
#define SWIFT_RUNTIME_FUNCTIONREPLACEMENT_H
|
|
|
|
#include "swift/Runtime/Config.h"
|
|
|
|
namespace swift {
|
|
|
|
/// Loads the replacement function pointer from \p ReplFnPtr and returns the
|
|
/// replacement function if it should be called.
|
|
/// Returns null if the original function (which is passed in \p CurrFn) should
|
|
/// be called.
|
|
#ifdef __APPLE__
|
|
__attribute__((weak_import))
|
|
#endif
|
|
SWIFT_RUNTIME_EXPORT char *
|
|
swift_getFunctionReplacement(char **ReplFnPtr, char *CurrFn);
|
|
|
|
/// Returns the original function of a replaced function, which is loaded from
|
|
/// \p OrigFnPtr.
|
|
/// This function is called from a replacement function to call the original
|
|
/// function.
|
|
#ifdef __APPLE__
|
|
__attribute__((weak_import))
|
|
#endif
|
|
SWIFT_RUNTIME_EXPORT char *
|
|
swift_getOrigOfReplaceable(char **OrigFnPtr);
|
|
|
|
} // namespace swift
|
|
|
|
#endif
|