LinkamCMS segfaults in Linux · Issue #273 · python

#LinkamCMS segfaults in Linux · Issue #273 · python| 来源: 网络整理| 查看: 265

This issue is happening when setting the callback for status events:

typedef void (*EventNewValueCallback)(CommsHandle hDevice, LinkamSDK::ControllerStatus status);

We can't pass unions and structures and bit-fields by value. But that's the interface for the callback so we can't just change it pointer.

But I think we can drop the bit-fields ourselves. ControllerStatus is a union where one member is a struct with access to each bit and a 64bit int that holds all the flags:

union ControllerStatus { struct { unsigned controllerError : 1; // ... 63 other bit-fields } flags; ///< Accessor to the flags. uint64_t value; ///< Flags as a single value; };

If the problem is the bit-field, we should be able to remove the flags struct from the ControllerStatus union and simply pass a uint64_t and manually access the bits we care about ourselves.

Unfortunately, the Linkam API does this a lot so we probably need to do the same in a bunch of other places

I do not have access the hardware to do this though.

【本文地址】

公司简介

联系我们

今日新闻

推荐新闻

专题文章