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Instead of always calling waitpid() and looking for the termination of a task, call poll() and watch for events on the pipes which are used for buffering subtask output. When we receive a POLLIN or POLLPRI event, ask the corresponding Task to read from the pipe; when we receive a POLLHUP or POLLERR event, wait for the subtask to finish and then ask the Task to perform its post-execution tasks. Now that the Unix implementation properly handles large amounts of subtask output, re-enable the Unix implementation (if supported). This fixes <rdar://problem/15795234>. Swift SVN r12293
36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
//===--- TaskQueue.cpp - Task Execution Work Queue ------------------------===//
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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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/// \file
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/// \brief This file includes the appropriate platform-specific TaskQueue
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/// implementation (or the default serial fallback if one is not available),
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/// as well as any platform-agnostic TaskQueue functionality.
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///
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//===----------------------------------------------------------------------===//
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#include "swift/Basic/TaskQueue.h"
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using namespace swift;
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using namespace swift::sys;
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// Include the correct TaskQueue implementation.
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#if LLVM_ON_UNIX
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#include "Unix/TaskQueue.inc"
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#else
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#include "Default/TaskQueue.inc"
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#endif
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TaskQueue::TaskQueue(unsigned NumberOfParallelTasks)
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: NumberOfParallelTasks(NumberOfParallelTasks) {}
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TaskQueue::~TaskQueue() = default;
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