Update to LibConf system, added loading of dynamic libraries (only Linux for now) and some more fixes.

source/mijin/util/os.cpp

@@ -1,14 +1,18 @@
 
 #include "os.hpp"
 
+#include <filesystem>
 #include "../detect.hpp"
 
 #if MIJIN_TARGET_OS == MIJIN_OS_LINUX
+    #include <dlfcn.h>
     #include <pthread.h>
 #elif MIJIN_TARGET_OS == MIJIN_OS_WINDOWS
 // TODO
 #endif
 
+namespace fs = std::filesystem;
+
 namespace mijin
 {
 
@@ -36,7 +40,24 @@ namespace mijin
 // public functions
 //
 
-void setCurrentThreadName(const char* threadName)
+LibraryHandle openSharedLibrary(std::string_view libraryFile) noexcept
+{
+#if MIJIN_TARGET_OS == MIJIN_OS_LINUX
+    const fs::path libraryPath = fs::absolute(libraryFile);
+    return {.data = dlopen(libraryPath.c_str(), RTLD_NOW)};
+#elif MIJIN_TARGET_OS == MIJIN_OS_WINDOWS
+#endif
+}
+
+void* loadSymbolFromLibrary(const LibraryHandle library, const char* symbolName) noexcept
+{
+#if MIJIN_TARGET_OS == MIJIN_OS_LINUX
+    return dlsym(library.data, symbolName);
+#elif MIJIN_TARGET_OS == MIJIN_OS_WINDOWS
+#endif
+}
+
+void setCurrentThreadName(const char* threadName) noexcept
 {
 #if MIJIN_TARGET_OS == MIJIN_OS_LINUX
     pthread_setname_np(pthread_self(), threadName);
@@ -44,4 +65,15 @@ void setCurrentThreadName(const char* threadName)
 #endif
 }
 
+[[nodiscard]] std::string makeLibraryFilename(std::string_view libraryName) noexcept
+{
+#if MIJIN_TARGET_OS == MIJIN_OS_LINUX
+    return "lib" + std::string(libraryName) + ".so";
+#elif MIJIN_TARGET_OS == MIJIN_OS_WINDOWS
+    return std::string(libraryName) + ".dll";
+#else
+
+#endif
+}
+
 } // namespace mijin

source/mijin/util/os.hpp

@@ -4,6 +4,9 @@
 #if !defined(MIJIN_UTIL_OS_HPP_INCLUDED)
 #define MIJIN_UTIL_OS_HPP_INCLUDED 1
 
+#include <string>
+#include <string_view>
+
 namespace mijin
 {
 
@@ -19,11 +22,23 @@ namespace mijin
 // public types
 //
 
+struct LibraryHandle
+{
+    void* data = nullptr;
+
+    constexpr operator bool() const noexcept { return data != nullptr; }
+    constexpr bool operator!() const noexcept { return data == nullptr; }
+};
+
 //
 // public functions
 //
 
-void setCurrentThreadName(const char* threadName);
+[[nodiscard]] LibraryHandle openSharedLibrary(std::string_view libraryFile) noexcept;
+[[nodiscard]] void* loadSymbolFromLibrary(const LibraryHandle library, const char* symbolName) noexcept;
+void setCurrentThreadName(const char* threadName) noexcept;
+
+[[nodiscard]] std::string makeLibraryFilename(std::string_view libraryName) noexcept;
 
 } // namespace mijin