--- /dev/null
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with this
+ * work for additional information regarding copyright ownership. The ASF
+ * licenses this file to You under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#include <jni.h>
+#include <fcntl.h> // posix_fadvise, constants for open
+#include <string.h> // strerror
+#include <errno.h> // errno
+#include <unistd.h> // pread
+#include <sys/mman.h> // posix_madvise, madvise
+#include <sys/types.h> // constants for open
+#include <sys/stat.h> // constants for open
+
+// java -cp .:lib/junit-4.7.jar:./build/classes/test:./build/classes/java:./build/classes/demo -Dlucene.version=2.9-dev -DtempDir=build -ea org.junit.runner.JUnitCore org.apache.lucene.index.TestDoc
+
+/*
+ * Class: org_apache_lucene_store_NativePosixUtil
+ * Method: posix_fadvise
+ * Signature: (Ljava/io/FileDescriptor;JJI)V
+ */
+extern "C"
+JNIEXPORT jint JNICALL Java_org_apache_lucene_store_NativePosixUtil_posix_1fadvise(JNIEnv *env, jclass _ignore, jobject fileDescriptor, jlong offset, jlong len, jint advice)
+{
+ jfieldID field_fd;
+ jmethodID const_fdesc;
+
+ jclass ioex = env->FindClass("java/io/IOException");
+ if (ioex == NULL) {
+ return -1;
+ }
+
+ jclass fdesc = env->FindClass("java/io/FileDescriptor");
+ if (fdesc == NULL) {
+ return -2;
+ }
+
+ // read the int fd field
+ jfieldID fdField = env->GetFieldID(fdesc, "fd", "I");
+ if (fdField == NULL) {
+ return -3;
+ }
+
+ int fd = env->GetIntField(fileDescriptor, fdField);
+ //printf("fd=%d\n", fd); fflush(stdout);
+
+ int osAdvice;
+ switch(advice) {
+
+ case 0:
+ osAdvice = POSIX_FADV_NORMAL;
+ break;
+ case 1:
+ osAdvice = POSIX_FADV_SEQUENTIAL;
+ break;
+ case 2:
+ osAdvice = POSIX_FADV_RANDOM;
+ break;
+ case 3:
+ osAdvice = POSIX_FADV_WILLNEED;
+ break;
+ case 4:
+ osAdvice = POSIX_FADV_DONTNEED;
+ break;
+ case 5:
+ osAdvice = POSIX_FADV_NOREUSE;
+ break;
+ }
+
+ int result = posix_fadvise(fd, (off_t) offset, (off_t) len, osAdvice);
+ if (result == 0) {
+ // ok
+ } else {
+ env->ThrowNew(ioex, strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/*
+ * Class: org_apache_lucene_store_NativePosixUtil
+ * Method: open_direct
+ * Signature: (Ljava/lang/String;Z)Ljava/io/FileDescriptor;
+ */
+extern "C"
+JNIEXPORT jobject JNICALL Java_org_apache_lucene_store_NativePosixUtil_open_1direct(JNIEnv *env, jclass _ignore, jstring filename, jboolean readOnly)
+{
+ jfieldID field_fd;
+ jmethodID const_fdesc;
+ jclass class_fdesc, class_ioex;
+ jobject ret;
+ int fd;
+ char *fname;
+
+ class_ioex = env->FindClass("java/io/IOException");
+ if (class_ioex == NULL) return NULL;
+ class_fdesc = env->FindClass("java/io/FileDescriptor");
+ if (class_fdesc == NULL) return NULL;
+
+ fname = (char *) env->GetStringUTFChars(filename, NULL);
+
+ if (readOnly) {
+ fd = open(fname, O_RDONLY | O_DIRECT | O_NOATIME);
+ } else {
+ fd = open(fname, O_RDWR | O_CREAT | O_DIRECT | O_NOATIME, 0666);
+ }
+
+ //printf("open %s -> %d; ro %d\n", fname, fd, readOnly); fflush(stdout);
+
+ env->ReleaseStringUTFChars(filename, fname);
+
+ if (fd < 0) {
+ // open returned an error. Throw an IOException with the error string
+ env->ThrowNew(class_ioex, strerror(errno));
+ return NULL;
+ }
+
+ // construct a new FileDescriptor
+ const_fdesc = env->GetMethodID(class_fdesc, "<init>", "()V");
+ if (const_fdesc == NULL) return NULL;
+ ret = env->NewObject(class_fdesc, const_fdesc);
+
+ // poke the "fd" field with the file descriptor
+ field_fd = env->GetFieldID(class_fdesc, "fd", "I");
+ if (field_fd == NULL) return NULL;
+ env->SetIntField(ret, field_fd, fd);
+
+ // and return it
+ return ret;
+}
+
+
+/*
+ * Class: org_apache_lucene_store_NativePosixUtil
+ * Method: pread
+ * Signature: (Ljava/io/FileDescriptor;JLjava/nio/ByteBuffer;)I
+ */
+extern "C"
+JNIEXPORT jlong JNICALL Java_org_apache_lucene_store_NativePosixUtil_pread(JNIEnv *env, jclass _ignore, jobject jfd, jlong pos, jobject byteBuf)
+{
+ // get int fd:
+ jclass class_fdesc = env->FindClass("java/io/FileDescriptor");
+ if (class_fdesc == NULL) {
+ return -1;
+ }
+
+ jfieldID field_fd = env->GetFieldID(class_fdesc, "fd", "I");
+ if (field_fd == NULL) {
+ return -1;
+ }
+
+ const int fd = env->GetIntField(jfd, field_fd);
+
+ void *p = env->GetDirectBufferAddress(byteBuf);
+ if (p == NULL) {
+ return -1;
+ }
+
+ size_t size = (size_t) env->GetDirectBufferCapacity(byteBuf);
+ if (size <= 0) {
+ return -1;
+ }
+
+ size_t numBytesRead = pread(fd, p, (size_t) size, (off_t) pos);
+ if (numBytesRead == -1) {
+ jclass class_ioex = env->FindClass("java/io/IOException");
+ if (class_ioex == NULL) {
+ return -1;
+ }
+
+ env->ThrowNew(class_ioex, strerror(errno));
+ return -1;
+ }
+
+ return (jlong) numBytesRead;
+}
+
+/*
+ * Class: org_apache_lucene_store_NativePosixUtil
+ * Method: posix_madvise
+ * Signature: (Ljava/nio/ByteBuffer;I)I
+ */
+extern "C"
+JNIEXPORT jint JNICALL Java_org_apache_lucene_store_NativePosixUtil_posix_1madvise(JNIEnv *env, jclass _ignore, jobject buffer, jint advice) {
+ void *p = env->GetDirectBufferAddress(buffer);
+ if (p == NULL) {
+ return -1;
+ }
+
+ size_t size = (size_t) env->GetDirectBufferCapacity(buffer);
+ if (size <= 0) {
+ return -1;
+ }
+
+ int page = getpagesize();
+
+ // round start down to start of page
+ long long start = (long long) p;
+ start = start & (~(page-1));
+
+ // round end up to start of page
+ long long end = start + size;
+ end = (end + page-1)&(~(page-1));
+ size = (end-start);
+
+ int osAdvice;
+ switch(advice) {
+ case 0:
+ osAdvice = POSIX_MADV_NORMAL;
+ break;
+ case 1:
+ osAdvice = POSIX_MADV_SEQUENTIAL;
+ break;
+ case 2:
+ osAdvice = POSIX_MADV_RANDOM;
+ break;
+ case 3:
+ osAdvice = POSIX_MADV_WILLNEED;
+ break;
+ case 4:
+ osAdvice = POSIX_MADV_DONTNEED;
+ break;
+ case 5:
+ return -1;
+ break;
+ }
+
+ //printf("DO posix_madvise: %lx %d\n", p, size);fflush(stdout);
+
+ if (posix_madvise((void *) start, size, osAdvice) != 0) {
+ jclass class_ioex = env->FindClass("java/io/IOException");
+ if (class_ioex == NULL) {
+ return -1;
+ }
+
+ env->ThrowNew(class_ioex, strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/*
+ * Class: org_apache_lucene_store_NativePosixUtil
+ * Method: madvise
+ * Signature: (Ljava/nio/ByteBuffer;I)I
+ */
+extern "C"
+JNIEXPORT jint JNICALL Java_org_apache_lucene_store_NativePosixUtil_madvise(JNIEnv *env, jclass _ignore, jobject buffer, jint advice) {
+ void *p = env->GetDirectBufferAddress(buffer);
+ if (p == NULL) {
+ return -1;
+ }
+
+ size_t size = (size_t) env->GetDirectBufferCapacity(buffer);
+ if (size <= 0) {
+ return -1;
+ }
+
+ int page = getpagesize();
+
+ // round start down to start of page
+ long long start = (long long) p;
+ start = start & (~(page-1));
+
+ // round end up to start of page
+ long long end = start + size;
+ end = (end + page-1)&(~(page-1));
+ size = (end-start);
+
+ int osAdvice;
+ switch(advice) {
+ case 0:
+ osAdvice = MADV_NORMAL;
+ break;
+ case 1:
+ osAdvice = MADV_SEQUENTIAL;
+ break;
+ case 2:
+ osAdvice = MADV_RANDOM;
+ break;
+ case 3:
+ osAdvice = MADV_WILLNEED;
+ break;
+ case 4:
+ osAdvice = MADV_DONTNEED;
+ break;
+ case 5:
+ return -1;
+ break;
+ }
+
+
+ //printf("DO madvise: page=%d p=0x%lx 0x%lx size=0x%lx\n", page, p, start, size);fflush(stdout);
+
+ if (madvise((void *) start, size, osAdvice) != 0) {
+ jclass class_ioex = env->FindClass("java/io/IOException");
+ if (class_ioex == NULL) {
+ return -1;
+ }
+
+ env->ThrowNew(class_ioex, strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
fnp / pylucene.git / blobdiff