This is the mail archive of the java@gcc.gnu.org mailing list for the Java project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]

CNI byte array

To: "'java-discuss at sourceware dot cygnus dot com'" <java-discuss at sourceware dot cygnus dot com>
Subject: CNI byte array
From: "Shu-Fang Chen" <shuchen at nortelnetworks dot com>
Date: Thu, 1 Mar 2001 14:23:03 -0600

Title: CNI byte array

Hello,

I am working on a project using Cygnus Native Interface. I would like to send a message (which is a byte array) from C back to Java. Then, I need to create a object of JArrayByte (jbyteArray CNI_ArrayPtr = JvNewByteArray(ArrayLength);) and copy the content in the C byte array to the JArrayByte object (memcpy(elements(CNI_ArrayPtr), C_ArrayPtr, ArrayLength);). It would take much more time and memory if the message traffic is heavy. If I could access the field "data" in class JArray, the problem would be solved. Unfortunately, it's a private field.

Can you tell me any way that I might avoid this kind of memeory allocating and data copying, and the byte array still can be send out successfully?

Thanks a lot!

Shu-Fang Chen

Shu-Fang Chen
Nortel Networks
e-mobility Development
Tel: (972) 685-2449
Email: shuchen@nortelnetworks.com

Follow-Ups:
- Re: CNI byte array
  - From: Per Bothner
- Re: CNI byte array
  - From: Rolf W. Rasmussen

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]