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32 #include "wtf/SpinLock.h"
34 #include "platform/Task.h"
35 #include "public/platform/Platform.h"
36 #include "public/platform/WebThread.h"
37 #include "wtf/OwnPtr.h"
38 #include "wtf/PassOwnPtr.h"
39 #include <gtest/gtest.h>
43 using namespace blink;
45 static const size_t bufferSize = 16;
49 static void fillBuffer(volatile char* buffer, char fillPattern)
51 for (size_t i = 0; i < bufferSize; ++i)
52 buffer[i] = fillPattern;
55 static void changeAndCheckBuffer(volatile char* buffer)
57 fillBuffer(buffer, '\0');
59 for (size_t i = 0; i < bufferSize; ++i)
64 // This will mess with the other thread's calculation if we accidentally get
66 fillBuffer(buffer, '!');
69 static void threadMain(volatile char* buffer)
71 for (int i = 0; i < 500000; ++i) {
73 changeAndCheckBuffer(buffer);
74 spinLockUnlock(&lock);
78 TEST(WTF_SpinLock, Torture)
80 char sharedBuffer[bufferSize];
82 OwnPtr<WebThread> thread1 = adoptPtr(Platform::current()->createThread("thread1"));
83 OwnPtr<WebThread> thread2 = adoptPtr(Platform::current()->createThread("thread2"));
85 thread1->postTask(new Task(WTF::bind(&threadMain, static_cast<char*>(sharedBuffer))));
86 thread2->postTask(new Task(WTF::bind(&threadMain, static_cast<char*>(sharedBuffer))));