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Java binding for MPI_REQUEST_GET_STATUS #760

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Merged
merged 1 commit into from
Jul 30, 2015
Merged

Java binding for MPI_REQUEST_GET_STATUS #760

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12 changes: 12 additions & 0 deletions ompi/mpi/java/c/mpi_Request.c
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Original file line number Diff line number Diff line change
Expand Up @@ -171,6 +171,18 @@ JNIEXPORT jobject JNICALL Java_mpi_Request_testStatus(
return flag ? ompi_java_status_new(env, &status) : NULL;
}

JNIEXPORT jobject JNICALL Java_mpi_Request_getStatus(
JNIEnv *env, jobject jthis, jlong handle)
{
MPI_Request req = (MPI_Request)handle;
int flag;
MPI_Status status;
int rc = MPI_Request_get_status(req, &flag, &status);
ompi_java_exceptionCheck(env, rc);
(*env)->SetLongField(env, jthis, ompi_java.ReqHandle, (jlong)req);
return flag ? ompi_java_status_new(env, &status) : NULL;
}

JNIEXPORT jboolean JNICALL Java_mpi_Request_test(
JNIEnv *env, jobject jthis, jlong handle)
{
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17 changes: 17 additions & 0 deletions ompi/mpi/java/java/Request.java
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Expand Up @@ -169,6 +169,23 @@ public final Status testStatus() throws MPIException

private native Status testStatus(long request) throws MPIException;

/**
* Returns a status object if the operation identified by the request
* is complete, or a null reference otherwise.
* <p>Java binding of the MPI operation {@code MPI_REQUEST_GET_STATUS}.
* <p>After the call, if the operation is complete (ie, if the return
* value is non-null), the request object remains active.
* @return status object
* @throws MPIException Signals that an MPI exception of some sort has occurred.
*/
public final Status getStatus() throws MPIException
{
MPI.check();
return getStatus(handle);
}

private native Status getStatus(long request) throws MPIException;

/**
* Returns true if the operation identified by the request
* is complete, or false otherwise.
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