xrCore/ModuleLookup.cpp: Linux implementation

Author: Xottab-DUTY

src/xrCore/ModuleLookup.cpp

@@ -22,11 +22,20 @@ void* ModuleHandle::open(pcstr moduleName)
         close();
 
     Log("Loading DLL:", moduleName);
-#if defined(WINDOWS)
-    handle = ::LoadLibrary(moduleName);
+
+#ifdef WINDOWS
+    handle = LoadLibraryA(moduleName);
+#elif defined(LINUX)
+    handle = dlopen(name, RTLD_LAZY);
 #endif
     if (handle == nullptr)
-        Msg("! Failed to load DLL: %d", GetLastError());
+    {
+#ifdef WINDOWS
+        Msg("! Failed to load DLL: 0x%d", GetLastError());
+#elif defined(LINUX)
+        Msg("! Failed to load DLL: 0x%d", dlerror());
+#endif
+    }
 
     return handle;
 }
@@ -35,9 +44,24 @@ void ModuleHandle::close()
 {
     if (dontUnload)
         return;
-#if defined(WINDOWS)
-    FreeLibrary(static_cast<HMODULE>(handle));
+
+    bool closed = false;
+
+#ifdef WINDOWS
+    closed = FreeLibrary(static_cast<HMODULE>(handle)) != 0;
+#else
+    closed = dlclose(handle) == 0;
+#endif
+
+    if (closed == false)
+    {
+#ifdef WINDOWS
+        Msg("! Failed to close DLL: 0x%d", GetLastError());
+#elif LINUX
+        Msg("! Failed to close DLL: 0x%d", dlerror());
 #endif
+    }
+
     handle = nullptr;
 }
 
@@ -53,8 +77,23 @@ void* ModuleHandle::operator()() const
 
 void* ModuleHandle::getProcAddress(pcstr procName) const
 {
-#if defined(WINDOWS)
-    return GetProcAddress(static_cast<HMODULE>(handle), procName);
+    void* proc = nullptr;
+
+#ifdef WINDOWS
+    proc = ::GetProcAddress(static_cast<HMODULE>(handle), procName);
+#elif defined(LINUX)
+    proc = dlsym(handle, procedure);
 #endif
+
+    if (proc == nullptr)
+    {
+#ifdef WINDOWS
+        Msg("! Failed to load procedure [%s] from DLL: 0x%d", procName, GetLastError());
+#elif LINUX
+        Msg("! Failed to load procedure [%s] from DLL: 0x%d", procName, dlerror());
+#endif
+    }
+
+    return proc;
 }
-}
+} // namespace XRay