crash打印数组小技巧
原创
以16进制输出结果：
crash> struct -x pipe_inode_info 0xffff883491df8c40 | grep buffers
buffers = 0x10,
或
以10进制输出结果：
crash> struct -d pipe_inode_info 0xffff883491df8c40 | grep buffers
buffers = 16,
crash>
crash> struct -x pipe_inode_info 0xffff883491df8c40 | grep -w bufs
bufs = 0xffff883acd0d5800,
或
crash> struct pipe_inode_info.bufs 0xffff883491df8c40
bufs = 0xffff883acd0d5800
crash>
struct pipe_inode_info {
....
....
struct pipe_buffer *bufs;
....
};
void free_pipe_info(struct pipe_inode_info *pipe)
{
...
...
for (i = 0; i < pipe->buffers; i++) {
struct pipe_buffer *buf = pipe->bufs + i;
if (buf->ops)
buf->ops->release(pipe, buf);
}
...
...
}
打印第九（数组索引8）个数组成员内容，类型为struct pipe_buffer，0xffff883acd0d5800为数组起始地址：
crash> px ((struct pipe_buffer *)0xffff883acd0d5800)[8]
$1 = {
page = 0x0,
offset = 0x0,
len = 0x0,
ops = 0xffffffc7,
flags = 0x0,
private = 0x0
}
crash>
原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。