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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkRunnable.h" | |
8 #include "SkThreadPool.h" | 9 #include "SkThreadPool.h" |
9 #include "SkRunnable.h" | |
10 #include "SkThreadUtils.h" | 10 #include "SkThreadUtils.h" |
11 #include "SkTypes.h" | |
11 | 12 |
12 SkThreadPool::SkThreadPool(const int count) | 13 #if defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_MAC) |
14 #include <unistd.h> | |
15 #endif | |
16 | |
17 namespace { | |
18 // Returns the number of cores on this machine. | |
19 int numCores() { | |
scroggo
2013/04/19 18:43:35
Should this be num_cores(), as if this were a stat
mtklein
2013/04/19 18:52:59
Yes, done.
| |
20 #if defined(SK_BUILD_FOR_WIN32) | |
21 SYSTEM_INFO sysinfo; | |
22 GetSystemInfo(&sysinfo); | |
23 return sysinfo.dwNumberOfProcessors; | |
24 #elif defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_MAC) | |
25 return sysconf(_SC_NPROCESSORS_ONLN); | |
26 #else | |
27 return 1; | |
caryclark
2013/04/19 18:37:12
SK_BUILD_ANDROID ?
could this use the sysconf call
mtklein
2013/04/19 18:52:59
Yes, that'll work there too. Done.
| |
28 #endif | |
29 } | |
30 } // namespace | |
31 | |
32 SkThreadPool::SkThreadPool(int count) | |
13 : fDone(false) { | 33 : fDone(false) { |
34 if (count < 0) count = numCores(); | |
14 // Create count threads, all running SkThreadPool::Loop. | 35 // Create count threads, all running SkThreadPool::Loop. |
15 for (int i = 0; i < count; i++) { | 36 for (int i = 0; i < count; i++) { |
16 SkThread* thread = SkNEW_ARGS(SkThread, (&SkThreadPool::Loop, this)); | 37 SkThread* thread = SkNEW_ARGS(SkThread, (&SkThreadPool::Loop, this)); |
17 *fThreads.append() = thread; | 38 *fThreads.append() = thread; |
18 thread->start(); | 39 thread->start(); |
19 } | 40 } |
20 } | 41 } |
21 | 42 |
22 SkThreadPool::~SkThreadPool() { | 43 SkThreadPool::~SkThreadPool() { |
23 fDone = true; | 44 fDone = true; |
(...skipping 55 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
79 } | 100 } |
80 | 101 |
81 // We have some threads. Queue it up! | 102 // We have some threads. Queue it up! |
82 fReady.lock(); | 103 fReady.lock(); |
83 LinkedRunnable* linkedRunnable = SkNEW(LinkedRunnable); | 104 LinkedRunnable* linkedRunnable = SkNEW(LinkedRunnable); |
84 linkedRunnable->fRunnable = r; | 105 linkedRunnable->fRunnable = r; |
85 fQueue.addToHead(linkedRunnable); | 106 fQueue.addToHead(linkedRunnable); |
86 fReady.signal(); | 107 fReady.signal(); |
87 fReady.unlock(); | 108 fReady.unlock(); |
88 } | 109 } |
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