Hi,Attached is a patch I'd like to get some comments on, before I check it in, especially if anyone can spot holes in my C. This patch
- Implements FileChannel.map, and the native methods needed for MappedByteBufferImpl. - Adds a bulk put implementation to DirectByteBufferImpl using memcpy. This resulted in a 10x speedup of that method on jamvm (it is almost as good as the Blackdown JVM 1.4.2). - Fixes a memory leak in the native implementation of the bulk 'get' method in VMDirectByteBuffer (it never called ReleaseByteArrayElements for the source array).
Ok? I might be too busy to get to this until next weekend.(Apologies if the patch is 'application/octet-stream.' If anyone knows how to convince Mail.app that '.patch' is text/plain or text/x- patch, I'd like to hear how.)
2005-07-18 Casey Marshall <[EMAIL PROTECTED]>
* configure.ac (AC_CHECK_HEADERS): add "sys/mman.h".
(AC_CHECK_FUNCS): add mmap and related functions.
* include/java_nio_VMDirectByteBuffer.h: regenerated.
* java/nio/DirectByteBufferImpl.java (put): new method.
* native/jni/java-nio/gnu_java_nio_channels_FileChannelImpl.c
(ALIGN_DOWN): new macro.
(ALIGN_UP): new macro.
(Java_gnu_java_nio_channels_FileChannelImpl_mapImpl): implemented.
* native/jni/java-nio/java_nio_MappedByteBufferImpl.c: updated
copyright years.
(ALIGN_DOWN): new macro.
(ALIGN_UP): new macro.
(get_pagesize): new function.
(get_raw_values): new function.
(Java_java_nio_MappedByteBufferImpl_unmapImpl): implemented.
(Java_java_nio_MappedByteBufferImpl_isLoadedImpl): implemented.
(Java_java_nio_MappedByteBufferImpl_loadImpl): implemented.
(Java_java_nio_MappedByteBufferImpl_forceImpl): implemented.
* native/jni/java-nio/java_nio_VMDirectByteBuffer.c
(Java_java_nio_VMDirectByteBuffer_put): renamed to
'Java_java_nio_VMDirectByteBuffer_put__Lgnu_classpath_RawData_2IB.'
(Java_java_nio_VMDirectByteBuffer_get__Lgnu_classpath_RawData_2I_3BII):
call 'ReleaseByteArrayElements' on the source byte array elements.
(Java_java_nio_VMDirectByteBuffer_put__Lgnu_classpath_RawData_2I_3BII):
new method.
* vm/reference/java/nio/VMDirectByteBuffer.java
(put): new method.
nio.patch
Description: Binary data
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