+++ /dev/null
-/* Java bindings to the Comm API */
-
-/* Copyright (c) 2012-2018. The SimGrid Team. All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "jmsg_comm.h"
-#include "jmsg.hpp"
-#include "jxbt_utilities.hpp"
-
-#include <simgrid/msg.h>
-#include <string>
-
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(java);
-
-static jfieldID jcomm_field_Comm_bind;
-static jfieldID jcomm_field_Comm_finished;
-static jfieldID jcomm_field_Comm_receiving;
-static jfieldID jtask_field_Comm_task;
-static jfieldID jcomm_field_Comm_taskBind;
-
-void jcomm_bind_task(JNIEnv *env, jobject jcomm) {
- msg_comm_t comm = (msg_comm_t) (uintptr_t) env->GetLongField(jcomm, jcomm_field_Comm_bind);
- //test if we are receiving or sending a task.
- jboolean jreceiving = env->GetBooleanField(jcomm, jcomm_field_Comm_receiving);
- if (jreceiving == JNI_TRUE) {
- //bind the task object.
- msg_task_t task = MSG_comm_get_task(comm);
- xbt_assert(task != nullptr, "Task is nullptr");
- jobject jtask_global = static_cast<jobject>(MSG_task_get_data(task));
- //case where the data has already been retrieved
- if (jtask_global == nullptr) {
- return;
- }
-
- //Make sure the data will be correctly gc.
- jobject jtask_local = env->NewLocalRef(jtask_global);
- env->DeleteGlobalRef(jtask_global);
-
- env->SetObjectField(jcomm, jtask_field_Comm_task, jtask_local);
-
- MSG_task_set_data(task, nullptr);
- }
-}
-
-JNIEXPORT void JNICALL Java_org_simgrid_msg_Comm_nativeInit(JNIEnv *env, jclass cls) {
- jclass jfield_class_Comm = env->FindClass("org/simgrid/msg/Comm");
- xbt_assert(jfield_class_Comm, "Native initialization of msg/Comm failed. Please report that bug");
-
- jcomm_field_Comm_bind = jxbt_get_jfield(env, jfield_class_Comm, "bind", "J");
- jcomm_field_Comm_taskBind = jxbt_get_jfield(env, jfield_class_Comm, "taskBind", "J");
- jcomm_field_Comm_receiving = jxbt_get_jfield(env, jfield_class_Comm, "receiving", "Z");
- jtask_field_Comm_task = jxbt_get_jfield(env, jfield_class_Comm, "task", "Lorg/simgrid/msg/Task;");
- jcomm_field_Comm_finished = jxbt_get_jfield(env, jfield_class_Comm, "finished", "Z");
- xbt_assert(jcomm_field_Comm_bind && jcomm_field_Comm_taskBind && jcomm_field_Comm_receiving &&
- jtask_field_Comm_task && jcomm_field_Comm_finished,
- "Native initialization of msg/Comm failed. Please report that bug");
-}
-
-JNIEXPORT void JNICALL Java_org_simgrid_msg_Comm_nativeFinalize(JNIEnv *env, jobject jcomm) {
- msg_comm_t comm;
- msg_task_t *task_received;
-
- task_received = (msg_task_t*) (uintptr_t) env->GetLongField(jcomm, jcomm_field_Comm_taskBind);
- delete task_received;
-
- comm = (msg_comm_t) (uintptr_t) env->GetLongField(jcomm, jcomm_field_Comm_bind);
- MSG_comm_destroy(comm);
-}
-
-JNIEXPORT jboolean JNICALL Java_org_simgrid_msg_Comm_test(JNIEnv *env, jobject jcomm) {
- msg_comm_t comm;
- comm = (msg_comm_t) (uintptr_t) env->GetLongField(jcomm, jcomm_field_Comm_bind);
-
- jboolean finished = env->GetBooleanField(jcomm, jcomm_field_Comm_finished);
- if (finished == JNI_TRUE) {
- return JNI_TRUE;
- }
-
- if (not comm) {
- jxbt_throw_null(env, "comm is null");
- return JNI_FALSE;
- }
-
- if (MSG_comm_test(comm)) {
- msg_error_t status = MSG_comm_get_status(comm);
- if (status == MSG_OK) {
- jcomm_bind_task(env,jcomm);
- return JNI_TRUE;
- } else {
- //send the correct exception
- jmsg_throw_status(env,status);
- }
- }
- return JNI_FALSE;
-}
-
-JNIEXPORT void JNICALL Java_org_simgrid_msg_Comm_waitCompletion(JNIEnv *env, jobject jcomm, jdouble timeout) {
- msg_comm_t comm = (msg_comm_t) (uintptr_t) env->GetLongField(jcomm, jcomm_field_Comm_bind);
- if (not comm) {
- jxbt_throw_null(env, "comm is null");
- return;
- }
-
- jboolean finished = env->GetBooleanField(jcomm, jcomm_field_Comm_finished);
- if (finished == JNI_TRUE) {
- return;
- }
-
- msg_error_t status;
- status = MSG_comm_wait(comm,static_cast<double>(timeout));
- env->SetBooleanField(jcomm, jcomm_field_Comm_finished, JNI_TRUE);
- if (status == MSG_OK) {
- jcomm_bind_task(env,jcomm);
- } else {
- jmsg_throw_status(env,status);
- }
-}
-
-static msg_comm_t* jarray_to_commArray(JNIEnv *env, jobjectArray jcomms, /* OUT */ int *count)
-{
- *count = env->GetArrayLength(jcomms);
- msg_comm_t* comms = new msg_comm_t[*count];
-
- for (int i=0; i < *count; i++) {
- jobject jcomm = env->GetObjectArrayElement(jcomms, i);
- if (env->ExceptionOccurred())
- break;
-
- comms[i] = (msg_comm_t) (uintptr_t) env->GetLongField(jcomm, jcomm_field_Comm_bind);
- if (not comms[i]) {
- jxbt_throw_null(env, std::string("comm at rank ") + std::to_string(i) + " is null");
- return nullptr;
- }
-
- env->DeleteLocalRef(jcomm); // reduce the load on the garbage collector: we don't need that object anymore
- }
- return comms;
-}
-JNIEXPORT void JNICALL Java_org_simgrid_msg_Comm_waitAll(JNIEnv *env, jclass cls, jobjectArray jcomms, jdouble timeout)
-{
- int count;
- msg_comm_t* comms = jarray_to_commArray(env, jcomms, &count);
- if (not comms)
- return;
-
- MSG_comm_waitall(comms, count, static_cast<double>(timeout));
- delete[] comms;
-}
-JNIEXPORT int JNICALL Java_org_simgrid_msg_Comm_waitAny(JNIEnv *env, jclass cls, jobjectArray jcomms)
-{
- int count;
- msg_comm_t* comms = jarray_to_commArray(env, jcomms, &count);
- if (not comms)
- return -1;
- xbt_dynar_t dyn = xbt_dynar_new(sizeof(msg_comm_t),nullptr);
- for (int i=0; i<count; i++) {
- xbt_dynar_push(dyn, &(comms[i]));
- }
-
- int rank = MSG_comm_waitany(dyn);
- delete[] comms;
- xbt_dynar_free(&dyn);
- return rank;
-}
