jni-arrays.c

linux下建立JAVA虚拟机的源码KAFFE

/*
 * jni-arrays.c
 * Java Native Interface - Array handling JNI functions.
 *
 * Copyright (c) 1996, 1997
 *	Transvirtual Technologies, Inc.  All rights reserved.
 *
 * Copyright (c) 2004, 2005
 *      The Kaffe.org's developers. See ChangeLog for details.
 *
 * See the file "license.terms" for information on usage and redistribution 
 * of this file. 
 */

#include "config.h"

#ifdef HAVE_STRING_H
#include <string.h>
#endif

#include "jni_i.h"
#include "jni.h"
#include "jni_funcs.h"
#include "Arrays.h"
#include "jnirefs.h"
#include "exception.h"
#include "object.h"

jobject
KaffeJNI_GetObjectArrayElement(JNIEnv* env UNUSED, jobjectArray arr, jsize elem)
{
  jobject obj;
  jobjectArray arr_local;

  BEGIN_EXCEPTION_HANDLING(NULL);

  arr_local = unveil(arr);
  if (elem >= (jsize)obj_length((HArrayOfObject*)arr_local)) {
    throwException(ArrayIndexOutOfBoundsException);
  }
  obj = unhand_array((HArrayOfObject*)arr_local)->body[elem];

  ADD_REF(obj);
  END_EXCEPTION_HANDLING();
  return (obj);
}

void
KaffeJNI_SetObjectArrayElement(JNIEnv* env UNUSED, jobjectArray arr, jsize elem, jobject val)
{
  jobjectArray arr_local;
  jobject val_local;
  BEGIN_EXCEPTION_HANDLING_VOID();

  arr_local = unveil(arr);
  val_local = unveil(val);

  if (elem >= (jsize)obj_length((HArrayOfObject*)arr_local)) {
    throwException(ArrayIndexOutOfBoundsException);
  }
  unhand_array((HArrayOfObject*)arr_local)->body[elem] =
    (Hjava_lang_Object*)val_local;

  END_EXCEPTION_HANDLING();
}

jobjectArray
KaffeJNI_NewObjectArray(JNIEnv* env UNUSED, jsize len, jclass cls, jobject init)
{
  HArrayOfObject* obj;
  jsize i;
  jclass cls_local;
  jobject init_local;

  BEGIN_EXCEPTION_HANDLING(NULL);

  cls_local = unveil(cls);
  init_local = unveil(init);
  obj = (HArrayOfObject*)newArray((Hjava_lang_Class*)cls_local, len);

  /* I assume this is what init is for */
  for (i = 0; i < len; i++) {
    unhand_array(obj)->body[i] = (Hjava_lang_Object*)init_local;
  }

  ADD_REF(obj);
  END_EXCEPTION_HANDLING();
  return (obj);
}

jbooleanArray
KaffeJNI_NewBooleanArray(JNIEnv* env UNUSED, jsize len)
{
  jbooleanArray arr;

  BEGIN_EXCEPTION_HANDLING(NULL);

  arr = newArray(booleanClass, len);

  ADD_REF(arr);
  END_EXCEPTION_HANDLING();
  return (arr);
}

jbyteArray
KaffeJNI_NewByteArray(JNIEnv* env UNUSED, jsize len)
{
  jbyteArray arr;

  BEGIN_EXCEPTION_HANDLING(NULL);

  arr = newArray(byteClass, len);

  ADD_REF(arr);
  END_EXCEPTION_HANDLING();
  return (arr);
}

jcharArray
KaffeJNI_NewCharArray(JNIEnv* env UNUSED, jsize len)
{
  jcharArray arr;

  BEGIN_EXCEPTION_HANDLING(NULL);

  arr = newArray(charClass, len);

  ADD_REF(arr);
  END_EXCEPTION_HANDLING();
  return (arr);
}

jshortArray
KaffeJNI_NewShortArray(JNIEnv* env UNUSED, jsize len)
{
  jshortArray arr;

  BEGIN_EXCEPTION_HANDLING(NULL);

  arr = newArray(shortClass, len);

  ADD_REF(arr);
  END_EXCEPTION_HANDLING();
  return (arr);
}

jintArray
KaffeJNI_NewIntArray(JNIEnv* env UNUSED, jsize len)
{
  jintArray arr;

  BEGIN_EXCEPTION_HANDLING(NULL);

  arr = newArray(intClass, len);

  ADD_REF(arr);
  END_EXCEPTION_HANDLING();
  return (arr);
}

jlongArray
KaffeJNI_NewLongArray(JNIEnv* env UNUSED, jsize len)
{
  jlongArray arr;

  BEGIN_EXCEPTION_HANDLING(NULL);

  arr = newArray(longClass, len);

  ADD_REF(arr);
  END_EXCEPTION_HANDLING();
  return (arr);
}

jfloatArray
KaffeJNI_NewFloatArray(JNIEnv* env UNUSED, jsize len)
{
  jfloatArray arr;

  BEGIN_EXCEPTION_HANDLING(NULL);

  arr = newArray(floatClass, len);

  ADD_REF(arr);
  END_EXCEPTION_HANDLING();
  return (arr);
}

jdoubleArray
KaffeJNI_NewDoubleArray(JNIEnv* env UNUSED, jsize len)
{
  jdoubleArray arr;

  BEGIN_EXCEPTION_HANDLING(NULL);

  arr = newArray(doubleClass, len);

  ADD_REF(arr);
  END_EXCEPTION_HANDLING();
  return (arr);
}

jboolean*
KaffeJNI_GetBooleanArrayElements(JNIEnv* env UNUSED, jbooleanArray arr, jboolean* iscopy)
{
  jboolean* array;
  jbooleanArray arr_local;
  BEGIN_EXCEPTION_HANDLING(NULL);

  arr_local = unveil(arr);
  if (iscopy != NULL) {
    *iscopy = JNI_FALSE;
  }
  array = unhand_array((HArrayOfBoolean*)arr_local)->body;

  END_EXCEPTION_HANDLING();
  return (array);
}

jbyte*
KaffeJNI_GetByteArrayElements(JNIEnv* env UNUSED, jbyteArray arr, jboolean* iscopy)
{
  jbyte* array;
  jbyteArray arr_local;
  BEGIN_EXCEPTION_HANDLING(NULL);

  arr_local = unveil(arr);
  if (iscopy != NULL) {
    *iscopy = JNI_FALSE;
  }
  array = unhand_array((HArrayOfByte*)arr_local)->body;

  END_EXCEPTION_HANDLING();
  return (array);
}

void*
KaffeJNI_GetPrimitiveArrayCritical(JNIEnv* env, jarray arr, jboolean* iscopy)
{
  return (KaffeJNI_GetByteArrayElements(env, (jbyteArray)arr, iscopy));
}

jchar*
KaffeJNI_GetCharArrayElements(JNIEnv* env UNUSED, jcharArray arr, jboolean* iscopy)
{
  jchar* array;
  jcharArray arr_local;
  BEGIN_EXCEPTION_HANDLING(NULL);
  
  arr_local = unveil(arr);
  if (iscopy != NULL) {
    *iscopy = JNI_FALSE;
  }
  array = unhand_array((HArrayOfChar*)arr_local)->body;

  END_EXCEPTION_HANDLING();
  return (array);
}

jshort*
KaffeJNI_GetShortArrayElements(JNIEnv* env UNUSED, jshortArray arr, jboolean* iscopy)
{
  jshort* array;
  jshortArray arr_local;
  BEGIN_EXCEPTION_HANDLING(NULL);

  arr_local = unveil(arr);
  if (iscopy != NULL) {
    *iscopy = JNI_FALSE;
  }
  array = unhand_array((HArrayOfShort*)arr_local)->body;

  END_EXCEPTION_HANDLING();
  return (array);
}

jint*
KaffeJNI_GetIntArrayElements(JNIEnv* env UNUSED, jintArray arr, jboolean* iscopy)
{
  jint* array;
  jintArray arr_local;
  BEGIN_EXCEPTION_HANDLING(NULL);

  arr_local = unveil(arr);
  if (iscopy != NULL) {
    *iscopy = JNI_FALSE;
  }
  array = unhand_array((HArrayOfInt*)arr_local)->body;

  END_EXCEPTION_HANDLING();
  return (array);
}

jlong*
KaffeJNI_GetLongArrayElements(JNIEnv* env UNUSED, jlongArray arr, jboolean* iscopy)
{
  jlong* array;
  jlongArray arr_local;
  BEGIN_EXCEPTION_HANDLING(NULL);

  arr_local = unveil(arr);
  if (iscopy != NULL) {
    *iscopy = JNI_FALSE;
  }
  array = unhand_array((HArrayOfLong*)arr_local)->body;

  END_EXCEPTION_HANDLING();
  return (array);
}

jfloat*
KaffeJNI_GetFloatArrayElements(JNIEnv* env UNUSED, jfloatArray arr, jboolean* iscopy)
{
  jfloat* array;
  jfloatArray arr_local;
  BEGIN_EXCEPTION_HANDLING(NULL);

  arr_local = unveil(arr);
  if (iscopy != NULL) {
    *iscopy = JNI_FALSE;
  }
  array = unhand_array((HArrayOfFloat*)arr_local)->body;

  END_EXCEPTION_HANDLING();
  return (array);
}

jdouble*
KaffeJNI_GetDoubleArrayElements(JNIEnv* env UNUSED, jdoubleArray arr, jboolean* iscopy)
{
  jdouble* array;
  jdoubleArray arr_local;
  BEGIN_EXCEPTION_HANDLING(NULL);

  arr_local = unveil(arr);
  if (iscopy != NULL) {
    *iscopy = JNI_FALSE;
  }
  array = unhand_array((HArrayOfDouble*)arr_local)->body;

  END_EXCEPTION_HANDLING();
  return (array);
}

void
KaffeJNI_ReleaseBooleanArrayElements(JNIEnv* env UNUSED, jbooleanArray arr, jboolean* elems, jint mode)
{
  jbooleanArray arr_local;
  BEGIN_EXCEPTION_HANDLING_VOID();

  arr_local = unveil(arr);
  if (elems != unhand_array((HArrayOfBoolean*)arr_local)->body) {
    switch (mode) {
    case JNI_COMMIT:
      memcpy(unhand_array((HArrayOfBoolean*)arr_local)->body, elems,
	     obj_length((HArrayOfBoolean*)arr_local) * sizeof(jboolean));
      break;
    case 0:
      memcpy(unhand_array((HArrayOfBoolean*)arr_local)->body, elems,
	     obj_length((HArrayOfBoolean*)arr_local) * sizeof(jboolean));
      KFREE(elems);
      break;
    case JNI_ABORT:
      KFREE(elems);
      break;
    default:
      break;
    }
  }
  END_EXCEPTION_HANDLING();
}

void
KaffeJNI_ReleaseByteArrayElements(JNIEnv* env UNUSED, jbyteArray arr, jbyte* elems, jint mode)
{
  jbyteArray arr_local;
  BEGIN_EXCEPTION_HANDLING_VOID();

  arr_local = unveil(arr);
  if (elems != unhand_array((HArrayOfByte*)arr_local)->body) {
    switch (mode) {
    case JNI_COMMIT:
      memcpy(unhand_array((HArrayOfByte*)arr_local)->body, elems,
	     obj_length((HArrayOfByte*)arr_local) * sizeof(jbyte));
      break;
    case 0:
      memcpy(unhand_array((HArrayOfByte*)arr_local)->body, elems,
	     obj_length((HArrayOfByte*)arr_local) * sizeof(jbyte));
      KFREE(elems);
      break;
    case JNI_ABORT:
      KFREE(elems);
      break;
    default:
      break;
    }
  }
  END_EXCEPTION_HANDLING();
}

void
KaffeJNI_ReleasePrimitiveArrayCritical(JNIEnv* env, jbyteArray arr, void* elems, jint mode)
{
  KaffeJNI_ReleaseByteArrayElements(env, (jbyteArray)arr, (jbyte*)elems, mode);
}

void
KaffeJNI_ReleaseCharArrayElements(JNIEnv* env UNUSED, jcharArray arr, jchar* elems, jint mode)
{
  jcharArray arr_local;
  BEGIN_EXCEPTION_HANDLING_VOID();

  arr_local = unveil(arr);
  if (elems != unhand_array((HArrayOfChar*)arr_local)->body) {
    switch (mode) {
    case JNI_COMMIT:
      memcpy(unhand_array((HArrayOfChar*)arr_local)->body, elems,
	     obj_length((HArrayOfChar*)arr_local) * sizeof(jchar));
      break;
    case 0:
      memcpy(unhand_array((HArrayOfChar*)arr_local)->body, elems,
	     obj_length((HArrayOfChar*)arr_local) * sizeof(jchar));
      KFREE(elems);
      break;