| Sui Chen | 03eba28 | 2021-02-11 11:35:56 -0800 | [diff] [blame] | 1 | #include "handler.hpp" |
| 2 | |
| 3 | #include <blobs-ipmid/blobs.hpp> |
| 4 | |
| 5 | #include <memory> |
| 6 | |
| 7 | // Extern "C" is used due to the usage of dlopen() for loading IPMI handlers |
| 8 | // and IPMI blob handlers. This happens in two steps: |
| 9 | // |
| 10 | // 1) ipmid loads all libraries in /usr/lib/ipmid-providers from its |
| 11 | // loadLibraries() function using dlopen(). |
| 12 | // 2) The blobs library, libblobcmds.so, loads all libraries in |
| 13 | // /usr/lib/blobs-ipmid from its loadLibraries() function. It uses dlsym() |
| 14 | // to locate the createHandler function by its un-mangled name |
| 15 | // "createHandler". Using extern "C" prevents its name from being mangled |
| 16 | // into, for example, "_Z13createHandlerv". |
| 17 | |
| 18 | extern "C" std::unique_ptr<blobs::GenericBlobInterface> createHandler() |
| 19 | { |
| 20 | return std::make_unique<blobs::MetricBlobHandler>(); |
| 21 | } |