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44 lines
1.7 KiB
C++
44 lines
1.7 KiB
C++
//===--- ErrorObjectCommon.cpp - Recoverable error object -----------------===//
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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 - 2019 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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// This implements the parts of the standard Error protocol type which are
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// shared between the ObjC-interoperable implementation and the native
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// implementation. The parts specific to each implementation can be found in
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// ErrorObject.mm (for the ObjC-interoperable parts) and ErrorObjectNative.cpp.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Runtime/Concurrent.h"
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#include "swift/Runtime/Config.h"
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#include "ErrorObject.h"
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#include "ErrorObjectTestSupport.h"
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using namespace swift;
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std::atomic<void (*)(SwiftError *error)> swift::_swift_willThrow;
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void swift::_swift_setWillThrowHandler(void (* handler)(SwiftError *error)) {
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_swift_willThrow.store(handler, std::memory_order_release);
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}
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/// Breakpoint hook for debuggers, and calls _swift_willThrow if set.
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SWIFT_CC(swift) void
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swift::swift_willThrow(SWIFT_CONTEXT void *unused,
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SWIFT_ERROR_RESULT SwiftError **error) {
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// Cheap check to bail out early, since we expect there to be no callbacks
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// the vast majority of the time.
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auto handler = _swift_willThrow.load(std::memory_order_acquire);
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if (SWIFT_UNLIKELY(handler)) {
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(* handler)(*error);
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}
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}
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