nim_sdk_util.h

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#ifndef _NIM_SDK_CPP_NIM_SDK_UTIL_H_
#define _NIM_SDK_CPP_NIM_SDK_UTIL_H_
 
#include <functional>
#include <list>
#include <map>
#include <string>
#include "assert.h"
#ifdef WIN32
#include "wtypes.h"
#else
#include <dlfcn.h>
#endif
 
enum BoolStatus {
    BS_NOT_INIT = -1,
    BS_FALSE = 0,
    BS_TRUE = 1
};
namespace nim {
class SDKInstance {
public:
    SDKInstance();
    virtual ~SDKInstance();
 
    bool LoadSdkDll(const char* cur_module_dir, const char* sdk_dll_file_name);
 
    void UnLoadSdkDll();
 
    void OnSDKInited();
 
    void* GetFunction(const std::string& function_name) {
        void* function_ptr = nullptr;
        auto it = function_map.find(function_name);
        if (it != function_map.end()) {
            function_ptr = it->second;
        } else {
            function_ptr = get_proc_address_wrapper_ == nullptr ? nullptr : get_proc_address_wrapper_(function_name.c_str());
            if (function_ptr)
                function_map[function_name] = function_ptr;
        }
        assert(function_ptr);
        return function_ptr;
    }
 
private:
#ifdef WIN32
    HINSTANCE instance_nim_;
#else
    void* instance_nim_;
#endif
 
    std::map<std::string, void*> function_map;
    std::function<void*(const std::string&)> get_proc_address_wrapper_;
};
 
static void nim_print_unfound_func_name(const char* name) {
    printf("function [ %s ] not found \n", name);
}
 
static void unfound_function_holder() {}
 
}  // namespace nim
 
#define NIM_SDK_GET_FUNC_FROM_INSTANCE(instance, function_ptr)                                \
    (instance != nullptr && (((function_ptr)instance->GetFunction(#function_ptr)) != nullptr) \
            ? ((function_ptr)instance->GetFunction(#function_ptr))                            \
            : (nim::nim_print_unfound_func_name(#function_ptr), (function_ptr)nim::unfound_function_holder))
 
#endif  //_NIM_SDK_CPP_NIM_SDK_UTIL_H_