ad8f57396a
It is necessary because calling java methods from C is very slow. This commit was SVN r30799.
104 строки
3.6 KiB
C
104 строки
3.6 KiB
C
/*
|
|
Licensed 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.
|
|
*/
|
|
/*
|
|
* File : mpi_Status.c
|
|
* Headerfile : mpi_Status.h
|
|
* Author : Sung-Hoon Ko, Xinying Li
|
|
* Created : Thu Apr 9 12:22:15 1998
|
|
* Revision : $Revision: 1.9 $
|
|
* Updated : $Date: 2003/01/16 16:39:34 $
|
|
* Copyright: Northeast Parallel Architectures Center
|
|
* at Syracuse University 1998
|
|
*/
|
|
|
|
#include "ompi_config.h"
|
|
|
|
#include <stdlib.h>
|
|
#ifdef HAVE_TARGETCONDITIONALS_H
|
|
#include <TargetConditionals.h>
|
|
#endif
|
|
|
|
#include "mpi.h"
|
|
#include "mpi_Status.h"
|
|
#include "mpiJava.h"
|
|
|
|
JNIEXPORT void JNICALL Java_mpi_Status_init(JNIEnv *env, jclass c)
|
|
{
|
|
ompi_java.StSource = (*env)->GetFieldID(env, c, "source", "I");
|
|
ompi_java.StTag = (*env)->GetFieldID(env, c, "tag", "I");
|
|
ompi_java.StError = (*env)->GetFieldID(env, c, "error", "I");
|
|
ompi_java.St_cancelled = (*env)->GetFieldID(env, c, "_cancelled", "I");
|
|
ompi_java.St_ucount = (*env)->GetFieldID(env, c, "_ucount", "J");
|
|
ompi_java.StIndex = (*env)->GetFieldID(env, c, "index", "I");
|
|
}
|
|
|
|
static void getStatus(MPI_Status *status, jint source, jint tag,
|
|
jint error, jint cancelled, jlong ucount)
|
|
{
|
|
/* Copy the whole thing to C */
|
|
status->MPI_SOURCE = source;
|
|
status->MPI_TAG = tag;
|
|
status->MPI_ERROR = error;
|
|
status->_cancelled = cancelled;
|
|
status->_ucount = ucount;
|
|
}
|
|
|
|
JNIEXPORT jint JNICALL Java_mpi_Status_getCount(
|
|
JNIEnv *env, jobject jthis, jint source, jint tag,
|
|
jint error, jint cancelled, jlong ucount, jlong jType)
|
|
{
|
|
int count;
|
|
MPI_Status stat;
|
|
getStatus(&stat, source, tag, error, cancelled, ucount);
|
|
MPI_Datatype datatype = (MPI_Datatype)jType;
|
|
int rc = MPI_Get_count(&stat, datatype, &count);
|
|
ompi_java_exceptionCheck(env, rc);
|
|
return count;
|
|
}
|
|
|
|
JNIEXPORT jboolean JNICALL Java_mpi_Status_isCancelled(
|
|
JNIEnv *env, jobject jthis, jint source, jint tag,
|
|
jint error, jint cancelled, jlong ucount)
|
|
{
|
|
int flag;
|
|
MPI_Status stat;
|
|
getStatus(&stat, source, tag, error, cancelled, ucount);
|
|
int rc = MPI_Test_cancelled(&stat, &flag);
|
|
ompi_java_exceptionCheck(env, rc);
|
|
return flag==0 ? JNI_FALSE : JNI_TRUE;
|
|
}
|
|
|
|
JNIEXPORT jint JNICALL Java_mpi_Status_getElements(
|
|
JNIEnv *env, jobject jthis, jint source, jint tag,
|
|
jint error, jint cancelled, jlong ucount, jlong jType)
|
|
{
|
|
int count;
|
|
MPI_Status stat;
|
|
getStatus(&stat, source, tag, error, cancelled, ucount);
|
|
MPI_Datatype datatype = (MPI_Datatype)jType;
|
|
int rc = MPI_Get_elements(&stat, datatype, &count);
|
|
ompi_java_exceptionCheck(env, rc);
|
|
return count;
|
|
}
|
|
|
|
void ompi_java_status_set(MPI_Status *status, JNIEnv *env, jobject obj)
|
|
{
|
|
/* Copy the whole thing to Java */
|
|
(*env)->SetIntField(env, obj, ompi_java.StSource, status->MPI_SOURCE);
|
|
(*env)->SetIntField(env, obj, ompi_java.StTag, status->MPI_TAG);
|
|
(*env)->SetIntField(env, obj, ompi_java.StError, status->MPI_ERROR);
|
|
(*env)->SetIntField(env, obj, ompi_java.St_cancelled, status->_cancelled);
|
|
(*env)->SetLongField(env, obj, ompi_java.St_ucount, status->_ucount);
|
|
}
|