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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #import "base/message_loop/message_pump_mac.h" | 5 #import "base/message_loop/message_pump_mac.h" |
6 | 6 |
7 #import <Foundation/Foundation.h> | 7 #import <Foundation/Foundation.h> |
8 | 8 |
9 #include <dlfcn.h> | |
9 #include <limits> | 10 #include <limits> |
10 #include <stack> | 11 #include <stack> |
11 | 12 |
12 #include "base/format_macros.h" | 13 #include "base/format_macros.h" |
13 #include "base/logging.h" | 14 #include "base/logging.h" |
14 #include "base/mac/scoped_cftyperef.h" | 15 #include "base/mac/scoped_cftyperef.h" |
15 #include "base/metrics/histogram.h" | 16 #include "base/metrics/histogram.h" |
17 #include "base/message_loop/timer_slack.h" | |
16 #include "base/run_loop.h" | 18 #include "base/run_loop.h" |
17 #include "base/strings/stringprintf.h" | 19 #include "base/strings/stringprintf.h" |
18 #include "base/time/time.h" | 20 #include "base/time/time.h" |
19 | 21 |
20 #if !defined(OS_IOS) | 22 #if !defined(OS_IOS) |
21 #import <AppKit/AppKit.h> | 23 #import <AppKit/AppKit.h> |
22 #endif // !defined(OS_IOS) | 24 #endif // !defined(OS_IOS) |
23 | 25 |
24 namespace { | 26 namespace { |
25 | 27 |
26 void NoOp(void* info) { | 28 void NoOp(void* info) { |
27 } | 29 } |
28 | 30 |
29 const CFTimeInterval kCFTimeIntervalMax = | 31 const CFTimeInterval kCFTimeIntervalMax = |
30 std::numeric_limits<CFTimeInterval>::max(); | 32 std::numeric_limits<CFTimeInterval>::max(); |
31 | 33 |
32 #if !defined(OS_IOS) | 34 #if !defined(OS_IOS) |
33 // Set to true if MessagePumpMac::Create() is called before NSApp is | 35 // Set to true if MessagePumpMac::Create() is called before NSApp is |
34 // initialized. Only accessed from the main thread. | 36 // initialized. Only accessed from the main thread. |
35 bool g_not_using_cr_app = false; | 37 bool g_not_using_cr_app = false; |
36 #endif | 38 #endif |
37 | 39 |
40 // Call through to CFRunLoopTimerSetTolerance(), which is only available on | |
41 // OS X 10.9. | |
42 void SetTimerTolerance(CFRunLoopTimerRef timer, CFTimeInterval tolerance) { | |
43 typedef void (*CFRunLoopTimerSetTolerancePtr)(CFRunLoopTimerRef timer, | |
44 CFTimeInterval tolerance); | |
45 | |
46 static CFRunLoopTimerSetTolerancePtr settimertolerance_function_ptr = NULL; | |
47 static bool function_lookup_error = false; | |
Avi (use Gerrit)
2014/05/29 14:24:16
Is this thread-safe?
We could (theoretically) get
jeremy
2014/06/02 10:21:28
Done.
| |
48 | |
49 if (function_lookup_error) | |
50 return; | |
51 | |
52 if (!settimertolerance_function_ptr) { | |
53 settimertolerance_function_ptr = | |
54 reinterpret_cast<CFRunLoopTimerSetTolerancePtr>( | |
55 dlsym(RTLD_DEFAULT, "CFRunLoopTimerSetTolerance")); | |
56 if (!settimertolerance_function_ptr) { | |
57 function_lookup_error = true; | |
58 return; | |
59 } | |
60 } | |
61 | |
62 settimertolerance_function_ptr(timer, tolerance); | |
63 } | |
64 | |
38 } // namespace | 65 } // namespace |
39 | 66 |
40 namespace base { | 67 namespace base { |
41 | 68 |
42 // A scoper for autorelease pools created from message pump run loops. | 69 // A scoper for autorelease pools created from message pump run loops. |
43 // Avoids dirtying up the ScopedNSAutoreleasePool interface for the rare | 70 // Avoids dirtying up the ScopedNSAutoreleasePool interface for the rare |
44 // case where an autorelease pool needs to be passed in. | 71 // case where an autorelease pool needs to be passed in. |
45 class MessagePumpScopedAutoreleasePool { | 72 class MessagePumpScopedAutoreleasePool { |
46 public: | 73 public: |
47 explicit MessagePumpScopedAutoreleasePool(MessagePumpCFRunLoopBase* pump) : | 74 explicit MessagePumpScopedAutoreleasePool(MessagePumpCFRunLoopBase* pump) : |
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275 std::stack<TimeTicks> loop_wait_times_; | 302 std::stack<TimeTicks> loop_wait_times_; |
276 std::stack<TimeTicks> work_source_times_; | 303 std::stack<TimeTicks> work_source_times_; |
277 | 304 |
278 DISALLOW_COPY_AND_ASSIGN(MessagePumpInstrumentation); | 305 DISALLOW_COPY_AND_ASSIGN(MessagePumpInstrumentation); |
279 }; | 306 }; |
280 | 307 |
281 // Must be called on the run loop thread. | 308 // Must be called on the run loop thread. |
282 MessagePumpCFRunLoopBase::MessagePumpCFRunLoopBase() | 309 MessagePumpCFRunLoopBase::MessagePumpCFRunLoopBase() |
283 : delegate_(NULL), | 310 : delegate_(NULL), |
284 delayed_work_fire_time_(kCFTimeIntervalMax), | 311 delayed_work_fire_time_(kCFTimeIntervalMax), |
312 timer_slack_(base::TIMER_SLACK_NONE), | |
285 nesting_level_(0), | 313 nesting_level_(0), |
286 run_nesting_level_(0), | 314 run_nesting_level_(0), |
287 deepest_nesting_level_(0), | 315 deepest_nesting_level_(0), |
288 delegateless_work_(false), | 316 delegateless_work_(false), |
289 delegateless_idle_work_(false) { | 317 delegateless_idle_work_(false) { |
290 run_loop_ = CFRunLoopGetCurrent(); | 318 run_loop_ = CFRunLoopGetCurrent(); |
291 CFRetain(run_loop_); | 319 CFRetain(run_loop_); |
292 | 320 |
293 // Set a repeating timer with a preposterous firing time and interval. The | 321 // Set a repeating timer with a preposterous firing time and interval. The |
294 // timer will effectively never fire as-is. The firing time will be adjusted | 322 // timer will effectively never fire as-is. The firing time will be adjusted |
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431 CFRunLoopSourceSignal(work_source_); | 459 CFRunLoopSourceSignal(work_source_); |
432 CFRunLoopWakeUp(run_loop_); | 460 CFRunLoopWakeUp(run_loop_); |
433 } | 461 } |
434 | 462 |
435 // Must be called on the run loop thread. | 463 // Must be called on the run loop thread. |
436 void MessagePumpCFRunLoopBase::ScheduleDelayedWork( | 464 void MessagePumpCFRunLoopBase::ScheduleDelayedWork( |
437 const TimeTicks& delayed_work_time) { | 465 const TimeTicks& delayed_work_time) { |
438 TimeDelta delta = delayed_work_time - TimeTicks::Now(); | 466 TimeDelta delta = delayed_work_time - TimeTicks::Now(); |
439 delayed_work_fire_time_ = CFAbsoluteTimeGetCurrent() + delta.InSecondsF(); | 467 delayed_work_fire_time_ = CFAbsoluteTimeGetCurrent() + delta.InSecondsF(); |
440 CFRunLoopTimerSetNextFireDate(delayed_work_timer_, delayed_work_fire_time_); | 468 CFRunLoopTimerSetNextFireDate(delayed_work_timer_, delayed_work_fire_time_); |
469 if (timer_slack_ == TIMER_SLACK_MAXIMUM) { | |
470 SetTimerTolerance(delayed_work_timer_, delta.InSecondsF() * 0.5); | |
471 } else { | |
472 SetTimerTolerance(delayed_work_timer_, 0); | |
473 } | |
474 } | |
475 | |
476 void MessagePumpCFRunLoopBase::SetTimerSlack(TimerSlack timer_slack) { | |
477 timer_slack_ = timer_slack; | |
441 } | 478 } |
442 | 479 |
443 // Called from the run loop. | 480 // Called from the run loop. |
444 // static | 481 // static |
445 void MessagePumpCFRunLoopBase::RunDelayedWorkTimer(CFRunLoopTimerRef timer, | 482 void MessagePumpCFRunLoopBase::RunDelayedWorkTimer(CFRunLoopTimerRef timer, |
446 void* info) { | 483 void* info) { |
447 MessagePumpCFRunLoopBase* self = static_cast<MessagePumpCFRunLoopBase*>(info); | 484 MessagePumpCFRunLoopBase* self = static_cast<MessagePumpCFRunLoopBase*>(info); |
448 | 485 |
449 // The timer won't fire again until it's reset. | 486 // The timer won't fire again until it's reset. |
450 self->delayed_work_fire_time_ = kCFTimeIntervalMax; | 487 self->delayed_work_fire_time_ = kCFTimeIntervalMax; |
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954 [NSApplication sharedApplication]; | 991 [NSApplication sharedApplication]; |
955 g_not_using_cr_app = true; | 992 g_not_using_cr_app = true; |
956 return new MessagePumpNSApplication; | 993 return new MessagePumpNSApplication; |
957 #endif | 994 #endif |
958 } | 995 } |
959 | 996 |
960 return new MessagePumpNSRunLoop; | 997 return new MessagePumpNSRunLoop; |
961 } | 998 } |
962 | 999 |
963 } // namespace base | 1000 } // namespace base |
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