multi_library_class_loader.cpp
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29 
31 
32 #include <string>
33 #include <vector>
34 
35 namespace class_loader
36 {
37 
38 MultiLibraryClassLoader::MultiLibraryClassLoader(bool enable_ondemand_loadunload)
39 : enable_ondemand_loadunload_(enable_ondemand_loadunload)
40 {
41 }
42 
44 {
46 }
47 
49 {
50  std::vector<std::string> libraries;
51  for (
52  LibraryToClassLoaderMap::iterator itr = active_class_loaders_.begin();
53  itr != active_class_loaders_.end(); itr++)
54  {
55  libraries.push_back(itr->first);
56  }
57  return libraries;
58 }
59 
61 {
62  LibraryToClassLoaderMap::iterator itr = active_class_loaders_.find(library_path);
63  if (itr != active_class_loaders_.end()) {
64  return itr->second;
65  } else {return NULL;}
66 }
67 
69 {
70  ClassLoaderVector loaders;
71  for (
72  LibraryToClassLoaderMap::iterator itr = active_class_loaders_.begin();
73  itr != active_class_loaders_.end(); itr++)
74  {
75  loaders.push_back(itr->second);
76  }
77  return loaders;
78 }
79 
80 bool MultiLibraryClassLoader::isLibraryAvailable(const std::string & library_name)
81 {
82  return getClassLoaderForLibrary(library_name) != NULL;
83 }
84 
85 void MultiLibraryClassLoader::loadLibrary(const std::string & library_path)
86 {
87  if (!isLibraryAvailable(library_path)) {
88  active_class_loaders_[library_path] =
90  }
91 }
92 
94 {
95  std::vector<std::string> available_libraries = getRegisteredLibraries();
96  for (unsigned int c = 0; c < available_libraries.size(); c++) {
97  unloadLibrary(available_libraries.at(c));
98  }
99 }
100 
101 int MultiLibraryClassLoader::unloadLibrary(const std::string & library_path)
102 {
103  int remaining_unloads = 0;
104  LibraryToClassLoaderMap::iterator itr = active_class_loaders_.find(library_path);
105  if (itr != active_class_loaders_.end()) {
106  ClassLoader * loader = itr->second;
107  if (0 == (remaining_unloads = loader->unloadLibrary())) {
108  delete (loader);
109  active_class_loaders_.erase(itr);
110  }
111  }
112  return remaining_unloads;
113 }
114 
115 } // namespace class_loader
bool isLibraryAvailable(const std::string &library_path)
Indicates if a library has been loaded into memory.
int unloadLibrary(const std::string &library_path)
Unloads a library for this class loader.
This class allows loading and unloading of dynamically linked libraries which contain class definitio...
std::vector< ClassLoader * > ClassLoaderVector
void loadLibrary(const std::string &library_path)
Loads a library into memory for this class loader.
void shutdownAllClassLoaders()
Destroys all ClassLoaders.
virtual ~MultiLibraryClassLoader()
Virtual destructor for class.
int unloadLibrary()
Attempts to unload a library loaded within scope of the ClassLoader. If the library is not opened...
std::vector< std::string > getRegisteredLibraries()
Gets a list of all libraries opened by this class loader .
MultiLibraryClassLoader(bool enable_ondemand_loadunload)
Constructor for the class.
ClassLoaderVector getAllAvailableClassLoaders()
Gets all class loaders loaded within scope.
bool isOnDemandLoadUnloadEnabled()
Indicates if on-demand (lazy) load/unload is enabled so libraries are loaded/unloaded automatically a...
ClassLoader * getClassLoaderForLibrary(const std::string &library_path)
Gets a handle to the class loader corresponding to a specific runtime library.


class_loader
Author(s): Mirza Shah
autogenerated on Wed Jun 5 2019 22:08:15