NVCtrl loader

src/loaders/loader_nvctrl.cpp

@@ -0,0 +1,88 @@
+// This is generated file. Do not modify directly.
+// Path to the code generator: /home/crz/git/MangoHud/generate_library_loader.py .
+
+#include "loader_nvctrl.h"
+
+// Put these sanity checks here so that they fire at most once
+// (to avoid cluttering the build output).
+#if !defined(LIBRARY_LOADER_NVCTRL_H_DLOPEN) && !defined(LIBRARY_LOADER_NVCTRL_H_DT_NEEDED)
+#error neither LIBRARY_LOADER_NVCTRL_H_DLOPEN nor LIBRARY_LOADER_NVCTRL_H_DT_NEEDED defined
+#endif
+#if defined(LIBRARY_LOADER_NVCTRL_H_DLOPEN) && defined(LIBRARY_LOADER_NVCTRL_H_DT_NEEDED)
+#error both LIBRARY_LOADER_NVCTRL_H_DLOPEN and LIBRARY_LOADER_NVCTRL_H_DT_NEEDED defined
+#endif
+
+libnvctrl_loader::libnvctrl_loader() : loaded_(false) {
+}
+
+libnvctrl_loader::~libnvctrl_loader() {
+  CleanUp(loaded_);
+}
+
+bool libnvctrl_loader::Load(const std::string& library_name) {
+  if (loaded_) {
+    return false;
+  }
+
+#if defined(LIBRARY_LOADER_NVCTRL_H_DLOPEN)
+  library_ = dlopen(library_name.c_str(), RTLD_LAZY);
+  if (!library_)
+    return false;
+
+
+  XNVCTRLQueryVersion =
+      reinterpret_cast<decltype(this->XNVCTRLQueryVersion)>(
+          dlsym(library_, "XNVCTRLQueryVersion"));
+  if (!XNVCTRLQueryVersion) {
+    CleanUp(true);
+    return false;
+  }
+
+  XNVCTRLQueryAttribute =
+      reinterpret_cast<decltype(this->XNVCTRLQueryAttribute)>(
+          dlsym(library_, "XNVCTRLQueryAttribute"));
+  if (!XNVCTRLQueryAttribute) {
+    CleanUp(true);
+    return false;
+  }
+
+  XNVCTRLQueryTargetStringAttribute =
+      reinterpret_cast<decltype(this->XNVCTRLQueryTargetStringAttribute)>(
+          dlsym(library_, "XNVCTRLQueryTargetStringAttribute"));
+  if (!XNVCTRLQueryTargetStringAttribute) {
+    CleanUp(true);
+    return false;
+  }
+  
+  XNVCTRLQueryTargetAttribute =
+      reinterpret_cast<decltype(this->XNVCTRLQueryTargetAttribute)>(
+          dlsym(library_, "XNVCTRLQueryTargetAttribute"));
+  if (!XNVCTRLQueryTargetAttribute) {
+    CleanUp(true);
+    return false;
+  }
+
+#endif
+
+#if defined(LIBRARY_LOADER_NVCTRL_H_DT_NEEDED)
+  XNVCTRLQueryVersion = &::XNVCTRLQueryVersion;
+  XNVCTRLQueryAttribute = &::XNVCTRLQueryAttribute;
+
+#endif
+
+  loaded_ = true;
+  return true;
+}
+
+void libnvctrl_loader::CleanUp(bool unload) {
+#if defined(LIBRARY_LOADER_NVCTRL_H_DLOPEN)
+  if (unload) {
+    dlclose(library_);
+    library_ = NULL;
+  }
+#endif
+  loaded_ = false;
+  XNVCTRLQueryVersion = NULL;
+  XNVCTRLQueryAttribute = NULL;
+
+}

src/loaders/loader_nvctrl.h

@@ -0,0 +1,43 @@
+// This is generated file. Do not modify directly.
+// Path to the code generator: /home/crz/git/MangoHud/generate_library_loader.py .
+
+#ifndef LIBRARY_LOADER_NVCTRL_H
+#define LIBRARY_LOADER_NVCTRL_H
+#define Bool bool
+#include <X11/Xlib.h>
+#include "NVCtrl/NVCtrlLib.h"
+#define LIBRARY_LOADER_NVCTRL_H_DLOPEN
+
+
+#include <string>
+#include <dlfcn.h>
+
+class libnvctrl_loader {
+ public:
+  libnvctrl_loader();
+  libnvctrl_loader(const std::string& library_name) { Load(library_name); }
+  ~libnvctrl_loader();
+
+  bool Load(const std::string& library_name);
+  bool IsLoaded() { return loaded_; }
+
+  decltype(&::XNVCTRLQueryVersion) XNVCTRLQueryVersion;
+  decltype(&::XNVCTRLQueryAttribute) XNVCTRLQueryAttribute;
+  decltype(&::XNVCTRLQueryTargetStringAttribute) XNVCTRLQueryTargetStringAttribute;
+  decltype(&::XNVCTRLQueryTargetAttribute) XNVCTRLQueryTargetAttribute;
+
+ private:
+  void CleanUp(bool unload);
+
+#if defined(LIBRARY_LOADER_NVCTRL_H_DLOPEN)
+  void* library_;
+#endif
+
+  bool loaded_;
+
+  // Disallow copy constructor and assignment operator.
+  libnvctrl_loader(const libnvctrl_loader&);
+  void operator=(const libnvctrl_loader&);
+};
+
+#endif  // LIBRARY_LOADER_NVCTRL_H

src/meson.build

@@ -44,6 +44,7 @@ vklayer_files = files(
   'font_unispace.c',
   'cpu.cpp',
   'loaders/loader_nvml.cpp',
+  'loaders/loader_nvctrl.cpp',
   'nvml.cpp',
   'file_utils.cpp',
   'memory.cpp',