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#pragma once
namespace blobs
{
namespace internal
{
/**
* Interface to the dynamic library loader.
*/
class DlSysInterface
{
public:
virtual ~DlSysInterface() = default;
/**
* obtain error diagnostic for functions in the dlopen API
*
* @return the error details
*/
virtual const char* dlerror() const = 0;
/**
* open a shared object
*
* @param[in] filename - the path to the shared object or the filename to
* for searching
* @param[in] flags - the flags
* @return a handle to the shared object (null on failure)
*/
virtual void* dlopen(const char* filename, int flags) const = 0;
/**
* obtain address of a symbol in a shared object or executable
*
* @param[in] handle - pointer to shared object
* @param[in] symbol - name of the symbol to find
* @return the address of the symbol if found (null otherwise)
*/
virtual void* dlsym(void* handle, const char* symbol) const = 0;
};
class DlSysImpl : public DlSysInterface
{
public:
const char* dlerror() const override;
void* dlopen(const char* filename, int flags) const override;
void* dlsym(void* handle, const char* symbol) const override;
};
extern DlSysImpl dlsys_impl;
} // namespace internal
} // namespace blobs
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