org.jruby.ext.ffi.jna
Class JNAProvider

java.lang.Object
  org.jruby.RubyBasicObject
      org.jruby.RubyObject
          org.jruby.ext.ffi.FFIProvider
              org.jruby.ext.ffi.jna.JNAProvider

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, InstanceVariables, InternalVariables, IRubyObject, CoreObjectType

public final class JNAProvider
extends FFIProvider

A FFIProvider that uses JNA to load and execute native functions.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.jruby.RubyObject

RubyObject.ObjectMethods

Nested classes/interfaces inherited from class org.jruby.RubyBasicObject

RubyBasicObject.BasicObjectMethods, RubyBasicObject.Finalizer, RubyBasicObject.VariableTableEntry

Field Summary

Fields inherited from class org.jruby.ext.ffi.FFIProvider

CLASS_NAME, MODULE_NAME

Fields inherited from class org.jruby.RubyObject

OBJECT_ALLOCATOR

Fields inherited from class org.jruby.RubyBasicObject

ALL_F, dataStruct, ERR_INSECURE_SET_INST_VAR, FALSE_F, FL_USHIFT, flags, FROZEN_F, metaClass, NEVER, NIL_F, TAINTED_F, UNDEF, USER0_F, USER1_F, USER2_F, USER3_F, USER4_F, USER5_F, USER6_F, USER7_F, VARIABLE_TABLE_DEFAULT_CAPACITY, VARIABLE_TABLE_EMPTY_TABLE, VARIABLE_TABLE_LOAD_FACTOR, VARIABLE_TABLE_MAXIMUM_CAPACITY, variableTable, variableTableSize, variableTableThreshold

Fields inherited from interface org.jruby.runtime.builtin.IRubyObject

NULL_ARRAY

Method Summary

Invoker	createInvoker(Ruby runtime, java.lang.String libraryName, java.lang.String functionName, NativeType returnType, NativeParam[] parameterTypes, java.lang.String convention) Creates a new invoker for a native function.
int	getLastError() Gets the last native error code.
void	setLastError(int error) Sets the native error code.

Methods inherited from class org.jruby.ext.ffi.FFIProvider

createInvoker, createProviderClass, getLastError, getLastError, getModule

Methods inherited from class org.jruby.RubyObject

as, attachToObjectSpace, callInit, checkFrozen, convertToType, createObjectClass, display, dup, eql_p, eqlInternal, equal_p, equalInternal, equals, evalUnder, evalUnder, extend, freeze, frozen_p, getNativeTypeIndex, hash, hashCode, id_deprecated, id, initialize_copy, initialize, inspect, instance_eval, instance_eval, instance_eval, instance_eval, instance_eval, instance_exec, instance_of_p, instance_variable_defined_p, instance_variable_get, instance_variable_set, instance_variables, kind_of_p, method, methods, nil_p, op_eqq, op_equal, op_match, private_methods, protected_methods, public_methods, puts, rbClone, remove_instance_variable, respond_to_p, respond_to_p, send, send, send, send, send, singleton_methods, singleton_methods19, singletonMethods, specificEval, specificEval, specificEval, specificEval, specificEval, taint, tainted_p, to_a, to_java, to_s, toString, type_deprecated, type, untaint, validateInstanceVariable

Methods inherited from class org.jruby.RubyBasicObject

addFinalizer, anyToString, asJavaString, asString, callMethod, callMethod, callMethod, callMethod, callMethod, callMethod, callSuper, checkArrayType, checkStringType, convertToArray, convertToFloat, convertToHash, convertToInteger, convertToInteger, convertToInteger, convertToString, copyInstanceVariablesInto, copySpecialInstanceVariables, createBasicObjectClass, dataGetStruct, dataWrapStruct, ensureInstanceVariablesSettable, eql, fastGetInstanceVariable, fastGetInternalVariable, fastHasInstanceVariable, fastHasInternalVariable, fastSetInstanceVariable, fastSetInternalVariable, getFlag, getInstanceVariable, getInstanceVariableList, getInstanceVariableNameList, getInstanceVariables, getInternalVariable, getInternalVariableList, getInternalVariables, getJavaClass, getMetaClass, getRuntime, getSingletonClass, getSingletonClassClone, getType, getVariableCount, getVariableList, getVariableMap, getVariableNameList, hasInstanceVariable, hasInternalVariable, hasVariables, infectBy, isClass, isFalse, isFrozen, isImmediate, isModule, isNil, isRubyVariable, isTaint, isTrue, makeMetaClass, op_not_equal, op_not, removeFinalizers, removeInstanceVariable, removeInternalVariable, respondsTo, setFlag, setFrozen, setInstanceVariable, setInternalVariable, setMetaClass, setTaint, syncVariables, taint, testFrozen, variableTableContains, variableTableFastContains, variableTableFastFetch, variableTableFastStore, variableTableFetch, variableTableGetMap, variableTableGetMap, variableTableGetSize, variableTableGetTable, variableTableReadLocked, variableTableRehash, variableTableRemove, variableTableStore, variableTableSync

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

createInvoker

public final Invoker createInvoker(Ruby runtime,
                                   java.lang.String libraryName,
                                   java.lang.String functionName,
                                   NativeType returnType,
                                   NativeParam[] parameterTypes,
                                   java.lang.String convention)

Description copied from class: FFIProvider

Creates a new invoker for a native function.

Specified by:

createInvoker in class FFIProvider

libraryName - The library that contains the function.

functionName - The function name.

returnType - The return type of the function.

parameterTypes - The parameter types the function takes.

Returns:

a new Invoker instance.

getLastError

public int getLastError()

Description copied from class: FFIProvider

Gets the last native error code.

This returns the errno value that was set at the time of the last native function call.

Specified by:

getLastError in class FFIProvider

Returns:

The errno value.

setLastError

public void setLastError(int error)

Description copied from class: FFIProvider

Sets the native error code.

Specified by:

setLastError in class FFIProvider

Parameters:

error - The value to set errno to.