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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 "SkOnce.h" | 8 #include "SkOnce.h" |
9 #include "SkTaskGroup.h" | 9 #include "SkTaskGroup.h" |
10 #include "Test.h" | 10 #include "Test.h" |
11 | 11 |
12 static void add_five(int* x) { | 12 static void add_five(int* x) { |
13 *x += 5; | 13 *x += 5; |
14 } | 14 } |
15 | 15 |
16 SK_DECLARE_STATIC_ONCE(st_once); | |
17 DEF_TEST(SkOnce_Singlethreaded, r) { | 16 DEF_TEST(SkOnce_Singlethreaded, r) { |
18 int x = 0; | 17 int x = 0; |
19 | 18 |
20 // No matter how many times we do this, x will be 5. | 19 // No matter how many times we do this, x will be 5. |
21 SkOnce(&st_once, add_five, &x); | 20 SkOnce once; |
22 SkOnce(&st_once, add_five, &x); | 21 once(add_five, &x); |
23 SkOnce(&st_once, add_five, &x); | 22 once(add_five, &x); |
24 SkOnce(&st_once, add_five, &x); | 23 once(add_five, &x); |
25 SkOnce(&st_once, add_five, &x); | 24 once(add_five, &x); |
| 25 once(add_five, &x); |
26 | 26 |
27 REPORTER_ASSERT(r, 5 == x); | 27 REPORTER_ASSERT(r, 5 == x); |
28 } | 28 } |
29 | 29 |
30 SK_DECLARE_STATIC_ONCE(mt_once); | |
31 DEF_TEST(SkOnce_Multithreaded, r) { | 30 DEF_TEST(SkOnce_Multithreaded, r) { |
32 int x = 0; | 31 int x = 0; |
| 32 |
33 // Run a bunch of tasks to be the first to add six to x. | 33 // Run a bunch of tasks to be the first to add six to x. |
| 34 SkOnce once; |
34 SkTaskGroup().batch(1021, [&](int) { | 35 SkTaskGroup().batch(1021, [&](int) { |
35 void(*add_six)(int*) = [](int* p) { *p += 6; }; | 36 once([&] { x += 6; }); |
36 SkOnce(&mt_once, add_six, &x); | |
37 }); | 37 }); |
38 | 38 |
39 // Only one should have done the +=. | 39 // Only one should have done the +=. |
40 REPORTER_ASSERT(r, 6 == x); | 40 REPORTER_ASSERT(r, 6 == x); |
41 } | 41 } |
42 | 42 |
43 static int gX = 0; | 43 static int gX = 0; |
44 static void inc_gX() { gX++; } | 44 static void inc_gX() { gX++; } |
45 | 45 |
46 SK_DECLARE_STATIC_ONCE(noarg_once); | |
47 DEF_TEST(SkOnce_NoArg, r) { | 46 DEF_TEST(SkOnce_NoArg, r) { |
48 SkOnce(&noarg_once, inc_gX); | 47 SkOnce once; |
49 SkOnce(&noarg_once, inc_gX); | 48 once(inc_gX); |
50 SkOnce(&noarg_once, inc_gX); | 49 once(inc_gX); |
| 50 once(inc_gX); |
51 REPORTER_ASSERT(r, 1 == gX); | 51 REPORTER_ASSERT(r, 1 == gX); |
52 } | 52 } |
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