c - Walkpat内存测试

Question

有人知道有什么好的资源可以用来学习 RAM 上的 walkpat 内存测试吗？如果你能提供伪代码或 C 代码那就更好了。提前致谢!

Answer 1

volatile int *ptr;  // volatile because the compiler would otherwise outsmart you and not actually read the memory

for(ptr=0; ptr<SIZE; ptr++) {
    int test = 1;
    do {
        *ptr = test;
        if( *ptr != test ) FAIL();
        test <<= 1;        // walk that 1 through the word, until it falls off the end.
    } while(test);
}