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52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
//===--- CygwinPort.cpp - Functions for Cygwin port -----------------------===//
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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 - 2016 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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// Implementations Cygwin specific functions needed for running Swift.
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//
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//===----------------------------------------------------------------------===//
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#if defined(_WIN32) || defined(__CYGWIN__)
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#include "Private.h"
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#include "swift/Runtime/Debug.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <mutex>
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#include <vector>
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#define WIN32_LEAN_AND_MEAN
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#define NOMINMAX
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#include <windows.h>
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#include <psapi.h>
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using namespace swift;
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static std::mutex swiftOnceMutex;
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#if !defined(_MSC_VER)
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void swift::_swift_once_f(uintptr_t *predicate, void *context,
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void (*function)(void *)) {
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// FIXME: This implementation does a global lock, which is much worse than
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// what we have on other platforms. Each swift_once should synchronize on the
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// token.
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swiftOnceMutex.lock();
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if (*predicate == 0) {
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*predicate = 1ul;
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swiftOnceMutex.unlock();
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function(context);
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} else
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swiftOnceMutex.unlock();
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}
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#endif
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#endif
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