Method and system for improving performance of applications that employ a cross-language interface

A data processing system for improving the execution performance of an application, wherein the application contains native code and Java code supported by a cross-language boundary having methods for interfacing native code and Java code, wherein the data processing system includes a central processing unit (CPU) and a memory for storing data, the data processing system comprising:

• means for analyzing trace output data generated by instrumentation code in the application during the execution of the application;
• means for detecting a call within a native method to a cross-language interface method that obtains an object reference to an object that is created by non-native code;
• means for removing the call to the cross-language interface method from the native method;
• means for modifying the native method to accept as an input argument an object reference to an object that is created by non-native code;
• and
• means for modifying calls to the native method to pass as an input argument an object reference to an object that is created by non-native code.

A computer program product in a computer-readable medium for use in a data processing system for improving the execution performance of an application, wherein the application contains native code and Java code supported by a cross-language boundary having methods for interfacing native code and Java code, the computer program product comprising:

• instructions for analyzing trace output data generated by instrumentation code in the application during the execution of the application;
• instructions for detecting a call within a native method to a cross-language interface method that obtains an object reference to an object that is created by non-native code;
• instructions for removing the call to the cross-language interface method from the native method;
• instructions for modifying the native method to accept as an input argument an object reference to an object that is created by non-native code;
• and
• instructions for modifying calls to the native method to pass as an input argument an object reference to an object that is created by non-native code.

A method for improving the execution performance of an application in a data processing system, wherein the application contains native code and non-native code supported by a cross-language boundary having methods for interfacing native code and non-native code, the method comprising:

• analyzing trace output data generated by instrumentation code in the application during the execution of the application;
• detecting a native method that reads or writes data using calls to cross-language interface methods that copy data between a non-native buffer that is created by non-native code and a native buffer that is created by native code;
• in response to detecting calls to cross-language interface methods that copy data between a non-native buffer and a native buffer, modifying the native method to obtain a reference to a non-native buffer using a cross-language interface method;
• modifying the native method to read or write data using a cross-language interface method that uses the reference to the non-native buffer;
• and
• modifying the native method to release the reference to the non-native buffer using a cross-language interface method.

A data processing system for improving the execution performance of an application, wherein the application contains native code and Java code supported by a cross-language boundary having methods for interfacing native code and Java code, wherein the data processing system includes a central processing unit (CPU) and a memory for storing data, the data processing system comprising:

• means for analyzing trace output data generated by instrumentation code in the application during the execution of the application;
• means for detecting a native method that reads or writes data using calls to cross-language interface methods that copy data between a non-native buffer that is created by non-native code and a native buffer that is created by native code;
• means for modifying, in response to detecting calls to cross-language interface methods that copy data between a non-native buffer and a native buffer, the native method to obtain a reference to a non-native buffer using a cross-language interface method;
• means for modifying the native method to read or write data using a cross-language interface method that uses the obtained reference to the non-native buffer;
• and
• means for modifying the native method to release the obtained reference to the non-native buffer using a cross-language interface method.

A computer program product in a computer-readable medium for use in a data processing system for improving the execution performance of an application, wherein the application contains native code and Java code supported by a cross-language boundary having methods for interfacing native code and Java code, the computer program product comprising:

• instructions for analyzing trace output data generated by instrumentation code in the application during the execution of the application;
• instructions for detecting a native method that reads or writes data using calls to cross-language interface methods that copy data between a non-native buffer that is created by non-native code and a native buffer that is created by native code;
• instructions for modifying, in response to detecting calls to cross-language interface methods that copy data between a non-native buffer and a native buffer, the native method to obtain a reference to a non-native buffer using a cross-language interface method;
• instructions for modifying the native method to read or write data using a cross-language interface method that uses the obtained reference to the non-native buffer;
• and
• instructions for modifying the native method to release the obtained reference to the non-native buffer using a cross-language interface method.