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329abe543d
not an alignment value. Assert that various entrypoints get an alignment mask. Get everything uniformly passing an assertion about dealloating an object with the correct allocation size; don't actually enable the assertion yet, though. rdar://16989632 Swift SVN r18550
44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
//===--- Private.h - Private runtime declarations --------------*- 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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://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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// Private declarations of the Swift runtime.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_RUNTIME_PRIVATE_H
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#define SWIFT_RUNTIME_PRIVATE_H
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#include "swift/Runtime/Config.h"
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#include "swift/Runtime/FastEntryPoints.h"
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#include "llvm/Support/Compiler.h"
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namespace swift {
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extern "C" LLVM_LIBRARY_VISIBILITY LLVM_ATTRIBUTE_NORETURN
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void _swift_abortRetainUnowned(const void *object);
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extern "C" LLVM_LIBRARY_VISIBILITY
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void _swift_deallocClassInstance(HeapObject *object);
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/// Is the given value a valid alignment mask?
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static inline bool isAlignmentMask(size_t mask) {
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// mask == xyz01111...
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// mask+1 == xyz10000...
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// mask&(mask+1) == xyz00000...
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// So this is nonzero if and only if there any bits set
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// other than an arbitrarily long sequence of low bits.
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return (mask & (mask + 1)) == 0;
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}
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} // end namespace swift
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#endif /* SWIFT_RUNTIME_PRIVATE_H */
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