diff options
Diffstat (limited to 'libjava/classpath/native/jni/java-nio/java_nio.c')
| -rw-r--r-- | libjava/classpath/native/jni/java-nio/java_nio.c | 328 |
1 files changed, 0 insertions, 328 deletions
diff --git a/libjava/classpath/native/jni/java-nio/java_nio.c b/libjava/classpath/native/jni/java-nio/java_nio.c deleted file mode 100644 index a25f38a6d2a..00000000000 --- a/libjava/classpath/native/jni/java-nio/java_nio.c +++ /dev/null @@ -1,328 +0,0 @@ -/* java_nio.c - Native methods for gnu.java.nio.FileChannelImpl class - Copyright (C) 2002 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -/* do not move; needed here because of some macro definitions */ -#include <config.h> - -#ifdef HAVE_MMAP -#include <sys/mman.h> -#endif - -#include <jni.h> -#include <jcl.h> - -#include "target_native.h" -#ifndef WITHOUT_NETWORK -#include "target_native_network.h" -#endif /* WITHOUT_NETWORK */ - -#include "java_nio_channels_FileChannelImpl.h" - -#include "javaio.h" - -#define NIO_DEBUG(X) /* no debug */ -//#define NIO_DEBUG(X) X - -/*************************************** - * - * File Channel implementation - * - *************/ - - -static char * -compare (int i, int lim, char *buffer) -{ - sprintf (buffer, "(%d >= %d)", i, lim); - return buffer; -} - -static inline int -convert_Int (int X) -{ - unsigned char *a = (unsigned char *) &X; - int res = - (((int) a[0]) << 24) + - (((int) a[1]) << 16) + (((int) a[2]) << 8) + (((int) a[3]) << 0); - return res; -} - -static inline jlong -convert_Long (jlong X) -{ - unsigned char *a = (unsigned char *) &X; - int res1 = - (((int) a[0]) << 24) + - (((int) a[1]) << 16) + (((int) a[2]) << 8) + (((int) a[3]) << 0); - int res2; - a += 4; - res2 = - (((int) a[0]) << 24) + - (((int) a[1]) << 16) + (((int) a[2]) << 8) + (((int) a[3]) << 0); - return ((jlong) res1) | ((jlong) res2) << 32LL; -} - -static inline short -convert_Short (short X) -{ - unsigned char *a = (unsigned char *) &X; - int res = (((int) a[2]) << 8) + (((int) a[3]) << 0); - return res; -} -static inline short -convert_Char (short X) -{ - unsigned char *a = (unsigned char *) &X; - int res = (((int) a[2]) << 8) + (((int) a[3]) << 0); - return res; -} - -static inline unsigned char -convert_Byte (unsigned char X) -{ - return X; -} - -static inline float -convert_Float (float X) -{ - return X; -} - -static inline double -convert_Double (double X) -{ - return X; -} - - -// Note: do to many get()'s on a buffer and you should throw a BufferUnderflowException -// Alas, I only found this out during testing.... - -#define READ_WRITE_MMAPED_FILE(TYPE,ELT) \ - \ -ELT Java_gnu_java_nio_MappedByteFileBuffer_nio_1read_1 ## TYPE ## _1file_1channel(JNIEnv *env, \ - jclass c, jobject b, \ - int index, int limit, jlong jaddress) \ -{ \ - char *address = *(void **) &jaddress; char buffer[128]; \ - if (index >= limit) JCL_ThrowException(env, "java/nio/BufferUnderflowException", compare(index,limit, buffer)); \ - NIO_DEBUG( fprintf(stderr, "READ:index = %d [0]=%c [1]=%c\n", index, address[0],address[1]); ) \ - address += index; \ - return convert_ ## TYPE (*(ELT *) address); \ -} \ - \ -void Java_gnu_java_nio_MappedByteFileBuffer_nio_1write_1 ## TYPE ## _1file_1channel(JNIEnv *env, \ - jclass c, jobject b, \ - int index, int limit, ELT value, jlong jaddress) \ -{ \ - \ - char *address = *(void **) &jaddress; char buffer[128]; \ - if (index >= limit) JCL_ThrowException(env, "java/nio/BufferUnderflowException", compare(index,limit, buffer)); \ -NIO_DEBUG( fprintf(stderr, "WRITE:index = %d [0]=%c [1]=%c\n", index, address[0],address[1]); ) \ - address += index; \ - *(ELT *) address = value; \ -} \ - \ -ELT Java_gnu_java_nio_MappedByteFileBuffer_nio_1get_1 ## TYPE(JNIEnv *env, jclass c, jobject b, \ - int index, int limit, jlong jaddress) \ -{ \ - fprintf(stderr, "unimplemented\n"); return 0; \ -} \ - \ -void Java_gnu_java_nio_MappedByteFileBuffer_nio_1put_1 ## TYPE(JNIEnv *env, jclass c, jobject b, \ - int index, int limit, \ - ELT value, jlong jaddress) \ -{ \ - fprintf(stderr, "unimplemented\n"); \ -} - -READ_WRITE_MMAPED_FILE (Byte, u_int8_t); -READ_WRITE_MMAPED_FILE (Char, u_int16_t); -READ_WRITE_MMAPED_FILE (Short, u_int16_t); -READ_WRITE_MMAPED_FILE (Int, u_int32_t); -READ_WRITE_MMAPED_FILE (Long, u_int64_t); -READ_WRITE_MMAPED_FILE (Float, float); -READ_WRITE_MMAPED_FILE (Double, double); - -u_int64_t -nio_mmap_file (jint fd, jlong pos, jint size, jint jflags) -{ -#ifdef HAVE_MMAP - u_int64_t ret = 0; - void *address; - - int flags = (jflags != 2) ? MAP_SHARED : MAP_PRIVATE; - int prot = PROT_READ; - - if (jflags == 1) - prot |= PROT_WRITE; - - // fprintf(stderr, "mapping file: %d\n", fd); - - address = mmap (0, size, prot, flags, fd, pos); - - if (address == (void *) -1) - { - perror ("mapping file failed"); - return 0; - } - - // fprintf(stderr, "address = %p, fd = %d, pos=%lld, size=%d\n", address, fd, pos, size); - - *(void **) &ret = address; - - return ret; -#else /* not HAVE_MMAP */ - return (TARGET_NATIVE_MATH_INT_INT64_CONST_0); -#endif /* not HAVE_MMAP */ -} - - -void -nio_msync (int fd, jlong jaddress, int size) -{ -#ifdef HAVE_MMAP - int res; - char *address = *(void **) &jaddress; - - // fprintf(stderr, "synchronizing with file (%p -> %d bytes (%s))\n", address, size, address); - - res = msync (address, size, MS_SYNC | MS_INVALIDATE); - - if (res == -1) - { - perror ("synchronize with file failed"); - } -#else /* not HAVE_MMAP */ -#endif /* not HAVE_MMAP */ -} - -void -nio_unmmap_file (int fd, jlong jaddress, int size) -{ -#ifdef HAVE_MMAP - int res = 0; - char *address = *(void **) &jaddress; - - // nio_msync(fd, jaddress, size); - - // fprintf(stderr, "unmapping (%p -> %d bytes)\n", address, size); - - res = munmap (address, size); - if (res == -1) - { - perror ("un-mapping file failed"); - } -#else /* not HAVE_MMAP */ -#endif /* not HAVE_MMAP */ -} - - -/*************************************** - * - * Socket Channel implementation - * - *************/ - -/*************************************************************************/ - -/* - * Returns a 32 bit Internet address for the passed in InetAddress object - * Ronald: This is a verbatim copy from javanet.c. - * It's a copy to avoid a link error in orp. - */ - -static int -socket_channel_get_net_addr (JNIEnv * env, jobject addr) -{ -#ifndef WITHOUT_NETWORK - jclass cls = 0; - jmethodID mid; - jarray arr = 0; - jbyte *octets; - int netaddr, len; - - DBG - ("socket_channel_get_net_addr(): Entered socket_channel_get_net_addr\n"); - - /* Call the getAddress method on the object to retrieve the IP address */ - cls = (*env)->GetObjectClass (env, addr); - if (cls == NULL) - return (0); - - mid = (*env)->GetMethodID (env, cls, "getAddress", "()[B"); - if (mid == NULL) - return (0); - - DBG ("socket_channel_get_net_addr(): Got getAddress method\n"); - - arr = (*env)->CallObjectMethod (env, addr, mid); - if (arr == NULL) - return (0); - - DBG ("socket_channel_get_net_addr(): Got the address\n"); - - /* Turn the IP address into a 32 bit Internet address in network byte order */ - len = (*env)->GetArrayLength (env, arr); - if (len != 4) - { - JCL_ThrowException (env, "java/io/IOException", - "Internal Error: invalid byte array length"); - return (0); - } - DBG ("socket_channel_get_net_addr(): Length ok\n"); - - octets = (*env)->GetByteArrayElements (env, arr, 0); - if (octets == NULL) - return (0); - - DBG ("socket_channel_get_net_addr(): Grabbed bytes\n"); - - TARGET_NATIVE_NETWORK_IPADDRESS_BYTES_TO_INT (octets[0], - octets[1], - octets[2], - octets[3], netaddr); - - (*env)->ReleaseByteArrayElements (env, arr, octets, 0); - DBG ("socket_channel_get_net_addr(): Done getting addr\n"); - - return netaddr; -#else /* not WITHOUT_NETWORK */ - return (0); -#endif /* not WITHOUT_NETWORK */ -} |
