| //===--- CygwinPort.cpp - Functions for Cygwin port -----------------------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Implementations Cygwin specific functions needed for running Swift. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #if (defined(_WIN32) || defined(__CYGWIN__)) && !defined(_MSC_VER) |
| #include "Private.h" |
| #include "swift/Runtime/Debug.h" |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <mutex> |
| #include <vector> |
| |
| #define WIN32_LEAN_AND_MEAN |
| #define NOMINMAX |
| #include <windows.h> |
| #include <psapi.h> |
| |
| using namespace swift; |
| |
| static std::mutex swiftOnceMutex; |
| |
| void swift::_swift_once_f(uintptr_t *predicate, void *context, |
| void (*function)(void *)) { |
| // FIXME: This implementation does a global lock, which is much worse than |
| // what we have on other platforms. Each swift_once should synchronize on the |
| // token. |
| swiftOnceMutex.lock(); |
| if (*predicate == 0) { |
| *predicate = 1ul; |
| swiftOnceMutex.unlock(); |
| |
| function(context); |
| } else |
| swiftOnceMutex.unlock(); |
| } |
| #endif // (defined(_WIN32) || defined(__CYGWIN__)) && !defined(_MSC_VER) |