1 // Copyright 2016 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/task_scheduler/task_traits.h" 6 7 #include <stddef.h> 8 9 #include <ostream> 10 11 namespace base { 12 13 // Do not rely on defaults hard-coded below beyond the guarantees described in 14 // the header; anything else is subject to change. Tasks should explicitly 15 // request defaults if the behavior is critical to the task. 16 TaskTraits::TaskTraits() 17 : with_file_io_(false), 18 priority_(TaskPriority::BACKGROUND), 19 shutdown_behavior_(TaskShutdownBehavior::SKIP_ON_SHUTDOWN) {} 20 21 TaskTraits::~TaskTraits() = default; 22 23 TaskTraits& TaskTraits::WithFileIO() { 24 with_file_io_ = true; 25 return *this; 26 } 27 28 TaskTraits& TaskTraits::WithPriority(TaskPriority priority) { 29 priority_ = priority; 30 return *this; 31 } 32 33 TaskTraits& TaskTraits::WithShutdownBehavior( 34 TaskShutdownBehavior shutdown_behavior) { 35 shutdown_behavior_ = shutdown_behavior; 36 return *this; 37 } 38 39 std::ostream& operator<<(std::ostream& os, const TaskPriority& task_priority) { 40 switch (task_priority) { 41 case TaskPriority::BACKGROUND: 42 os << "BACKGROUND"; 43 break; 44 case TaskPriority::USER_VISIBLE: 45 os << "USER_VISIBLE"; 46 break; 47 case TaskPriority::USER_BLOCKING: 48 os << "USER_BLOCKING"; 49 break; 50 } 51 return os; 52 } 53 54 std::ostream& operator<<(std::ostream& os, 55 const TaskShutdownBehavior& shutdown_behavior) { 56 switch (shutdown_behavior) { 57 case TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN: 58 os << "CONTINUE_ON_SHUTDOWN"; 59 break; 60 case TaskShutdownBehavior::SKIP_ON_SHUTDOWN: 61 os << "SKIP_ON_SHUTDOWN"; 62 break; 63 case TaskShutdownBehavior::BLOCK_SHUTDOWN: 64 os << "BLOCK_SHUTDOWN"; 65 break; 66 } 67 return os; 68 } 69 70 } // namespace base 71
