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ca39bb5b10
This removes the explicit tree structure reference in the stubs to locate the shims. Instead, it expects that the `SwiftShims` directory will be added to the header search path.
120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
//===--- ThreadLocalStorage.cpp -------------------------------------------===//
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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 - 2018 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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#include <cstring>
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#include "SwiftShims/ThreadLocalStorage.h"
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#include "swift/Basic/Lazy.h"
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#include "swift/Runtime/Debug.h"
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#include "swift/Runtime/ThreadLocalStorage.h"
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SWIFT_CC(swift) SWIFT_RUNTIME_STDLIB_API
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void _stdlib_destroyTLS(void *);
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SWIFT_CC(swift) SWIFT_RUNTIME_STDLIB_API
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void *_stdlib_createTLS(void);
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#if !SWIFT_TLS_HAS_RESERVED_PTHREAD_SPECIFIC || (defined(_WIN32) && !defined(__CYGWIN__))
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static void
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#if defined(_M_IX86)
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__stdcall
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#endif
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destroyTLS_CCAdjustmentThunk(void *ptr) {
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_stdlib_destroyTLS(ptr);
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}
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#endif
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#if defined(_WIN32) && !defined(__CYGWIN__)
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typedef
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#if defined(_M_IX86)
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__stdcall
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#endif
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void (*__swift_thread_key_destructor)(void *);
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static inline int
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_stdlib_thread_key_create(__swift_thread_key_t * _Nonnull key,
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__swift_thread_key_destructor _Nullable destructor) {
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*key = FlsAlloc(destroyTLS_CCAdjustmentThunk);
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if (*key == FLS_OUT_OF_INDEXES)
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return GetLastError();
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return 0;
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}
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#endif
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#ifdef SWIFT_STDLIB_SINGLE_THREADED_RUNTIME
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SWIFT_RUNTIME_STDLIB_INTERNAL
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void *
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_swift_stdlib_threadLocalStorageGet(void) {
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static void *value;
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if (!value) {
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value = _stdlib_createTLS();
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}
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return value;
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}
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#elif SWIFT_TLS_HAS_RESERVED_PTHREAD_SPECIFIC
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SWIFT_RUNTIME_STDLIB_INTERNAL
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void *
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_swift_stdlib_threadLocalStorageGet(void) {
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void *value = SWIFT_THREAD_GETSPECIFIC(SWIFT_STDLIB_TLS_KEY);
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if (value)
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return value;
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static swift::OnceToken_t token;
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SWIFT_ONCE_F(token, [](void *) {
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int result = pthread_key_init_np(SWIFT_STDLIB_TLS_KEY, [](void *pointer) {
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_stdlib_destroyTLS(pointer);
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});
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if (result != 0)
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swift::fatalError(0, "couldn't create pthread key for stdlib TLS: %s\n",
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std::strerror(result));
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}, nullptr);
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value = _stdlib_createTLS();
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SWIFT_THREAD_SETSPECIFIC(SWIFT_STDLIB_TLS_KEY, value);
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return value;
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}
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#else
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SWIFT_RUNTIME_STDLIB_INTERNAL
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void *
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_swift_stdlib_threadLocalStorageGet(void) {
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static swift::OnceToken_t token;
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static __swift_thread_key_t key;
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SWIFT_ONCE_F(token, [](void *) {
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int result = SWIFT_THREAD_KEY_CREATE(&key, destroyTLS_CCAdjustmentThunk);
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if (result != 0)
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swift::fatalError(0, "couldn't create pthread key for stdlib TLS: %s\n",
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std::strerror(result));
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}, nullptr);
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void *value = SWIFT_THREAD_GETSPECIFIC(key);
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if (!value) {
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value = _stdlib_createTLS();
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int result = SWIFT_THREAD_SETSPECIFIC(key, value);
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if (result != 0)
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swift::fatalError(0, "pthread_setspecific failed: %s\n",
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std::strerror(result));
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}
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return value;
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}
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#endif
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