src/LoadableModule.h

   1 #ifndef SQUID_LOADABLE_MODULE_H
   2 #define SQUID_LOADABLE_MODULE_H
   3
   4 #include "SquidString.h"
   5
   6 // wrapper for dlopen(3), libltdl, and friends
   7 class LoadableModule {
   8 public:
   9     enum LoadMode { lmNow, lmLazy };
  10
  11 public:
  12     LoadableModule(const String &aName);
  13     ~LoadableModule();           // unloads if loaded
  14
  15     bool loaded() const;
  16     const String &name() const { return theName; }
  17     const String &error() const { return theError; }
  18
  19     void load(int mode = lmNow); // throws Texc
  20     void unload(); // throws Texc
  21
  22 protected:
  23     String theName;
  24     String theError;
  25     void *theHandle;
  26
  27 private:
  28     void *openModule(int mode);
  29     bool closeModule();
  30     const char *errorMsg();
  31 };
  32
  33 #endif