#include <algorithm>
-#include <cstring>
-#include <tr1/functional>
-#include <sstream>
#include <msg/msg.h>
#include <xbt/log.h>
#include "communicator.h"
-std::string message::to_string()
-{
- static const char* str[] = { "INFO", "CREDIT", "LOAD",
- "CTRL_CLOSE", "DATA_CLOSE" };
- std::ostringstream oss;
- oss << str[type] << ": " << amount;
- return oss.str();
-}
-
communicator::communicator()
: host(static_cast<hostdata*>(MSG_host_get_data(MSG_host_self())))
- , mutex(xbt_mutex_init())
- , cond(xbt_cond_init())
- , ctrl_task(NULL)
- , ctrl_comm(NULL)
- , data_task(NULL)
- , data_comm(NULL)
{
- xbt_mutex_acquire(mutex);
- receiver_process =
+ receiver_mutex.acquire();
+ receiver_thread =
MSG_process_create("receiver", communicator::receiver_wrapper,
this, MSG_host_self());
- xbt_cond_wait(cond, mutex); // wait for the receiver to be ready
- xbt_mutex_release(mutex);
+ receiver_cond.wait(receiver_mutex); // wait for the receiver to be ready
+ receiver_mutex.release();
}
communicator::~communicator()
XBT_DEBUG("send finalize to receiver/ctrl");
task = MSG_task_create("finalize", 0.0, 0, NULL);
- MSG_task_send(task, get_ctrl_mbox());
+ MSG_task_send(task, host->get_ctrl_mbox());
XBT_DEBUG("send finalize to receiver/data");
task = MSG_task_create("finalize", 0.0, 0, NULL);
- MSG_task_send(task, get_data_mbox());
+ MSG_task_send(task, host->get_data_mbox());
- xbt_mutex_acquire(mutex);
- while (receiver_process) {
+ receiver_mutex.acquire();
+ while (receiver_thread) {
XBT_DEBUG("waiting for receiver to terminate");
- xbt_cond_wait(cond, mutex);
+ receiver_cond.wait(receiver_mutex);
}
- xbt_mutex_release(mutex);
+ receiver_mutex.release();
- if (ctrl_comm)
- XBT_WARN("ctrl_comm is pending!");
- if (data_comm)
- XBT_WARN("data_comm is pending!");
if (!received.empty())
XBT_WARN("lost %zu received message%s!",
received.size(), ESSE(received.size()));
if (!sent_comm.empty())
XBT_WARN("lost %zu sent message%s!",
sent_comm.size(), ESSE(sent_comm.size()));
-
- xbt_cond_destroy(cond);
- xbt_mutex_destroy(mutex);
}
void communicator::send(const char* dest, message* msg)
sent_comm.push_back(comm);
}
-bool communicator::recv(message*& msg, m_host_t& from, double timeout)
-{
- if (timeout != 0) {
- volatile double deadline =
- timeout > 0 ? MSG_get_clock() + timeout : 0.0;
- xbt_mutex_acquire(mutex);
- while (received.empty() && (!deadline || deadline > MSG_get_clock())) {
- xbt_ex_t e;
- XBT_DEBUG("waiting for a message to come");
- TRY {
- if (deadline)
- xbt_cond_timedwait(cond, mutex, deadline - MSG_get_clock());
- else
- xbt_cond_wait(cond, mutex);
- }
- CATCH (e) {
- if (e.category != timeout_error)
- RETHROW;
- xbt_ex_free(e);
- }
- }
- xbt_mutex_release(mutex);
- }
-
- if (received.empty())
- return false;
-
- m_task_t task = received.front();
- received.pop();
- msg = static_cast<message*>(MSG_task_get_data(task));
- from = MSG_task_get_source(task);
- MSG_task_destroy(task);
-
- XBT_DEBUG("received %s from %s",
- msg->to_string().c_str(), MSG_host_get_name(from));
-
- return true;
-}
-
void communicator::flush(bool wait)
{
sent_comm.remove_if(comm_test_n_destroy);
std::copy(sent_comm.begin(), sent_comm.end(), comms);
MSG_comm_waitall(comms, sent_comm.size(), -1.0);
if (!MSG_WAIT_DESTROYS_COMMS)
- std::for_each(sent_comm.begin(), sent_comm.end(), MSG_comm_destroy);
+ std::for_each(sent_comm.begin(), sent_comm.end(),
+ comm_check_n_destroy);
sent_comm.clear();
}
}
-bool communicator::comm_test_n_destroy(msg_comm_t comm)
+bool communicator::recv(message*& msg, m_host_t& from, double timeout)
{
- if (MSG_comm_test(comm)) {
- MSG_comm_destroy(comm);
- return true;
- } else
- return false;
+ XBT_DEBUG("waiting for a message to come");
+ bool recvd = received.pop(msg, from, timeout);
+ if (recvd)
+ XBT_DEBUG("received %s from %s",
+ msg->to_string().c_str(), MSG_host_get_name(from));
+ return recvd;
}
int communicator::receiver_wrapper(int, char* [])
{
communicator* comm;
comm = static_cast<communicator*>(MSG_process_get_data(MSG_process_self()));
- int result = comm->receiver();
+ comm->receiver();
XBT_DEBUG("terminate");
- xbt_mutex_acquire(comm->mutex);
- comm->receiver_process = NULL;
- xbt_cond_signal(comm->cond);
- xbt_mutex_release(comm->mutex);
+ comm->receiver_mutex.acquire();
+ comm->receiver_thread = NULL;
+ comm->receiver_cond.signal();
+ comm->receiver_mutex.release();
- return result;
+ return 0;
}
-void communicator::receiver1(msg_comm_t& comm, m_task_t& task, const char* mbox)
+void communicator::receiver()
{
- MSG_comm_destroy(comm);
- if (strcmp(MSG_task_get_name(task), "finalize")) {
- XBT_DEBUG("received message on %s", mbox);
- xbt_mutex_acquire(mutex);
- received.push(task);
- xbt_cond_signal(cond);
- xbt_mutex_release(mutex);
- task = NULL;
- comm = MSG_task_irecv(&task, mbox);
- } else {
- XBT_DEBUG("received finalize on %s", mbox);
- MSG_task_destroy(task);
- task = NULL;
- comm = NULL;
+ xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
+ struct channel {
+ msg_comm_t comm;
+ m_task_t task;
+ const char* mbox;
+ };
+ channel chan[] = { { NULL, NULL, host->get_ctrl_mbox() },
+ { NULL, NULL, host->get_data_mbox() } };
+ const int chan_size = (sizeof chan) / (sizeof chan[0]);
+
+ for (int i = 0 ; i < chan_size ; ++i) {
+ chan[i].comm = MSG_task_irecv(&chan[i].task, chan[i].mbox);
+ xbt_dynar_push(comms, &chan[i].comm);
}
-}
-int communicator::receiver()
-{
- ctrl_comm = MSG_task_irecv(&ctrl_task, get_ctrl_mbox());
- data_comm = MSG_task_irecv(&data_task, get_data_mbox());
XBT_DEBUG("receiver ready");
- xbt_mutex_acquire(mutex);
- xbt_cond_signal(cond); // signal master that we are ready
- xbt_mutex_release(mutex);
-
- xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
- while (ctrl_comm || data_comm) {
-
- if (ctrl_comm)
- xbt_dynar_push(comms, &ctrl_comm);
- if (data_comm)
- xbt_dynar_push(comms, &data_comm);
- int recvd = MSG_comm_waitany(comms);
- msg_comm_t comm = xbt_dynar_get_as(comms, recvd, msg_comm_t);
- xbt_dynar_reset(comms);
-
- if (comm == ctrl_comm)
- receiver1(ctrl_comm, ctrl_task, get_ctrl_mbox());
- else if (comm == data_comm)
- receiver1(data_comm, data_task, get_data_mbox());
- else {
- XBT_ERROR("Handling unknown comm -- %p", comm);
- MSG_comm_destroy(comm);
+ receiver_mutex.acquire();
+ receiver_cond.signal(); // signal master that we are ready
+ receiver_mutex.release();
+
+ while (!xbt_dynar_is_empty(comms)) {
+
+ int index = MSG_comm_waitany(comms);
+ msg_comm_t finished_comm = xbt_dynar_get_as(comms, index, msg_comm_t);
+ channel* ch;
+
+ for (ch = chan ; ch->comm != finished_comm ; ++ch)
+ /* nop */;
+
+ comm_check_n_destroy(ch->comm);
+ if (strcmp(MSG_task_get_name(ch->task), "finalize")) {
+ XBT_DEBUG("received message on %s", ch->mbox);
+ received.push(ch->task);
+ ch->task = NULL;
+ ch->comm = MSG_task_irecv(&ch->task, ch->mbox);
+ xbt_dynar_set_as(comms, index, msg_comm_t, ch->comm);
+ } else {
+ XBT_DEBUG("received finalize on %s", ch->mbox);
+ MSG_task_destroy(ch->task);
+ ch->task = NULL;
+ ch->comm = NULL;
+ xbt_dynar_remove_at(comms, index, NULL);
}
+
}
xbt_dynar_free(&comms);
- return 0;
+}
+
+void communicator::comm_check_n_destroy(msg_comm_t comm)
+{
+ xbt_assert(MSG_comm_get_status(comm) == MSG_OK);
+ MSG_comm_destroy(comm);
+}
+
+bool communicator::comm_test_n_destroy(msg_comm_t comm)
+{
+ if (MSG_comm_test(comm)) {
+ comm_check_n_destroy(comm);
+ return true;
+ } else
+ return false;
}
// Local variables:
