readClass :: B.ByteString -> IO ClassInfo
readClass path = do
- cfile <- readClassFile $ toString path
+ class_map' <- getClassMap
+ case M.lookup path class_map' of
+ Just cm -> return cm
+ Nothing -> do
+ cfile <- readClassFile $ toString path
#ifdef DBG_CLASS
- dumpClass cfile
+ dumpClass cfile
#endif
- -- load all interfaces, which are implemented by this class
- sequence_ [ loadInterface i | i <- interfaces cfile ]
- superclass <- if path /= "java/lang/Object"
- then do
- sc <- readClass $ superClass cfile
- return $ Just sc
- else return Nothing
-
- (staticmap, fieldmap) <- calculateFields cfile superclass
- (methodmap, mbase) <- calculateMethodMap cfile superclass
- immap <- getInterfaceMethodMap
-
- -- allocate interface offset table for this class
- -- TODO(bernhard): we have some duplicates in immap (i.e. some
- -- entries have the same offset), so we could
- -- save some memory here.
- iftable <- mallocClassData ((4*) $ M.size immap)
- let w32_iftable = fromIntegral $ ptrToIntPtr iftable :: Word32
- -- store interface-table at offset 0 in method-table
- pokeElemOff (intPtrToPtr $ fromIntegral mbase) 0 w32_iftable
- printfCp "staticmap: %s @ %s\n" (show staticmap) (toString path)
- printfCp "fieldmap: %s @ %s\n" (show fieldmap) (toString path)
- printfCp "methodmap: %s @ %s\n" (show methodmap) (toString path)
- printfCp "mbase: 0x%08x\n" mbase
- printfCp "interfacemethod: %s @ %s\n" (show immap) (toString path)
- printfCp "iftable: 0x%08x\n" w32_iftable
- virtual_map <- getVirtualMap
- setVirtualMap $ M.insert mbase path virtual_map
+ -- load all interfaces, which are implemented by this class
+ sequence_ [ loadInterface i | i <- interfaces cfile ]
+ superclass <- if path /= "java/lang/Object"
+ then do
+ sc <- readClass $ superClass cfile
+ return $ Just sc
+ else return Nothing
+
+ (staticmap, fieldmap) <- calculateFields cfile superclass
+ (methodmap, mbase) <- calculateMethodMap cfile superclass
+ immap <- getInterfaceMethodMap
- class_map <- getClassMap
- let new_ci = ClassInfo path cfile staticmap fieldmap methodmap mbase False
- setClassMap $ M.insert path new_ci class_map
- return new_ci
+ -- allocate interface offset table for this class
+ -- TODO(bernhard): we have some duplicates in immap (i.e. some
+ -- entries have the same offset), so we could
+ -- save some memory here.
+ iftable <- mallocClassData ((4*) $ M.size immap)
+ let w32_iftable = fromIntegral $ ptrToIntPtr iftable :: Word32
+ -- store interface-table at offset 0 in method-table
+ pokeElemOff (intPtrToPtr $ fromIntegral mbase) 0 w32_iftable
+ printfCp "staticmap: %s @ %s\n" (show staticmap) (toString path)
+ printfCp "fieldmap: %s @ %s\n" (show fieldmap) (toString path)
+ printfCp "methodmap: %s @ %s\n" (show methodmap) (toString path)
+ printfCp "mbase: 0x%08x\n" mbase
+ printfCp "interfacemethod: %s @ %s\n" (show immap) (toString path)
+ printfCp "iftable: 0x%08x\n" w32_iftable
+ virtual_map <- getVirtualMap
+ setVirtualMap $ M.insert mbase path virtual_map
+
+ class_map <- getClassMap
+ let new_ci = ClassInfo path cfile staticmap fieldmap methodmap mbase False
+ setClassMap $ M.insert path new_ci class_map
+ return new_ci
loadInterface :: B.ByteString -> IO ()