-/* Copyright (c) 2006-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2006-2017. 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 "src/msg/msg_private.hpp"
#include "xbt/log.h"
-#include "src/msg/msg_private.h"
-
-#include "simgrid/s4u/comm.hpp"
-#include <simgrid/s4u/Mailbox.hpp>
+#include "simgrid/s4u/Comm.hpp"
+#include "simgrid/s4u/Mailbox.hpp"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_comm,s4u_activity,"S4U asynchronous communications");
namespace simgrid {
namespace s4u {
-
-Comm::~Comm() {
-
-}
-
-
-
-s4u::Comm &Comm::send_init(s4u::MailboxPtr chan) {
- s4u::Comm *res = new s4u::Comm();
- res->sender_ = SIMIX_process_self();
- res->mailbox_ = chan;
- return *res;
-}
-
-s4u::Comm &Comm::recv_init(s4u::MailboxPtr chan) {
- s4u::Comm *res = new s4u::Comm();
- res->receiver_ = SIMIX_process_self();
- res->mailbox_ = chan;
- return *res;
+Comm::~Comm()
+{
+ if (state_ == started && not detached_ && (pimpl_ == nullptr || pimpl_->state == SIMIX_RUNNING)) {
+ XBT_INFO("Comm %p freed before its completion. Detached: %d, State: %d", this, detached_, state_);
+ if (pimpl_ != nullptr)
+ XBT_INFO("pimpl_->state: %d", pimpl_->state);
+ else
+ XBT_INFO("pimpl_ is null");
+ xbt_backtrace_display_current();
+ }
}
-void Comm::setRate(double rate) {
+Activity* Comm::setRate(double rate)
+{
xbt_assert(state_==inited);
rate_ = rate;
+ return this;
}
-void Comm::setSrcData(void * buff) {
+Activity* Comm::setSrcData(void* buff)
+{
xbt_assert(state_==inited);
xbt_assert(dstBuff_ == nullptr, "Cannot set the src and dst buffers at the same time");
srcBuff_ = buff;
+ return this;
}
-void Comm::setSrcDataSize(size_t size){
+Activity* Comm::setSrcDataSize(size_t size)
+{
xbt_assert(state_==inited);
srcBuffSize_ = size;
+ return this;
}
-void Comm::setSrcData(void * buff, size_t size) {
+Activity* Comm::setSrcData(void* buff, size_t size)
+{
xbt_assert(state_==inited);
xbt_assert(dstBuff_ == nullptr, "Cannot set the src and dst buffers at the same time");
srcBuff_ = buff;
srcBuffSize_ = size;
+ return this;
}
-void Comm::setDstData(void ** buff) {
+Activity* Comm::setDstData(void** buff)
+{
xbt_assert(state_==inited);
xbt_assert(srcBuff_ == nullptr, "Cannot set the src and dst buffers at the same time");
dstBuff_ = buff;
+ return this;
}
size_t Comm::getDstDataSize(){
xbt_assert(state_==finished);
return dstBuffSize_;
}
-void Comm::setDstData(void ** buff, size_t size) {
+Activity* Comm::setDstData(void** buff, size_t size)
+{
xbt_assert(state_==inited);
xbt_assert(srcBuff_ == nullptr, "Cannot set the src and dst buffers at the same time");
dstBuff_ = buff;
dstBuffSize_ = size;
+ return this;
}
-void Comm::start() {
+Activity* Comm::start()
+{
xbt_assert(state_ == inited);
if (srcBuff_ != nullptr) { // Sender side
- pimpl_ = simcall_comm_isend(sender_, mailbox_->getImpl(), remains_, rate_,
- srcBuff_, srcBuffSize_,
- matchFunction_, cleanFunction_, copyDataFunction_,
- userData_, detached_);
+ pimpl_ = simcall_comm_isend(sender_, mailbox_->getImpl(), remains_, rate_, srcBuff_, srcBuffSize_, matchFunction_,
+ cleanFunction_, copyDataFunction_, user_data_, detached_);
} else if (dstBuff_ != nullptr) { // Receiver side
- pimpl_ = simcall_comm_irecv(receiver_, mailbox_->getImpl(), dstBuff_, &dstBuffSize_,
- matchFunction_, copyDataFunction_,
- userData_, rate_);
+ xbt_assert(not detached_, "Receive cannot be detached");
+ pimpl_ = simcall_comm_irecv(receiver_, mailbox_->getImpl(), dstBuff_, &dstBuffSize_, matchFunction_,
+ copyDataFunction_, user_data_, rate_);
} else {
xbt_die("Cannot start a communication before specifying whether we are the sender or the receiver");
}
state_ = started;
-}
-void Comm::wait() {
- xbt_assert(state_ == started || state_ == inited);
-
- if (state_ == started)
- simcall_comm_wait(pimpl_, -1/*timeout*/);
- else {// p_state == inited. Save a simcall and do directly a blocking send/recv
- if (srcBuff_ != nullptr) {
- simcall_comm_send(sender_, mailbox_->getImpl(), remains_, rate_,
- srcBuff_, srcBuffSize_,
- matchFunction_, copyDataFunction_,
- userData_, -1 /*timeout*/);
- } else {
- simcall_comm_recv(receiver_, mailbox_->getImpl(), dstBuff_, &dstBuffSize_,
- matchFunction_, copyDataFunction_,
- userData_, -1/*timeout*/, rate_);
- }
+ return this;
+}
+
+/** @brief Block the calling actor until the communication is finished */
+Activity* Comm::wait()
+{
+ return this->wait(-1);
+}
+
+/** @brief Block the calling actor until the communication is finished, or until timeout
+ *
+ * On timeout, an exception is thrown.
+ *
+ * @param timeout the amount of seconds to wait for the comm termination.
+ * Negative values denote infinite wait times. 0 as a timeout returns immediately. */
+Activity* Comm::wait(double timeout)
+{
+ switch (state_) {
+ case finished:
+ return this;
+
+ case inited: // It's not started yet. Do it in one simcall
+ if (srcBuff_ != nullptr) {
+ simcall_comm_send(sender_, mailbox_->getImpl(), remains_, rate_, srcBuff_, srcBuffSize_, matchFunction_,
+ copyDataFunction_, user_data_, timeout);
+ } else { // Receiver
+ simcall_comm_recv(receiver_, mailbox_->getImpl(), dstBuff_, &dstBuffSize_, matchFunction_, copyDataFunction_,
+ user_data_, timeout, rate_);
+ }
+ state_ = finished;
+ return this;
+
+ case started:
+ simcall_comm_wait(pimpl_, timeout);
+ state_ = finished;
+ return this;
+
+ default:
+ THROW_IMPOSSIBLE;
}
- state_ = finished;
- delete this;
+ return this;
}
-void Comm::wait(double timeout) {
- xbt_assert(state_ == started || state_ == inited);
-
- if (state_ == started) {
- simcall_comm_wait(pimpl_, timeout);
- state_ = finished;
- return;
+int Comm::test_any(std::vector<CommPtr>* comms)
+{
+ smx_activity_t* array = new smx_activity_t[comms->size()];
+ for (unsigned int i = 0; i < comms->size(); i++) {
+ array[i] = comms->at(i)->pimpl_;
}
-
- // It's not started yet. Do it in one simcall
- if (srcBuff_ != nullptr) {
- simcall_comm_send(sender_, mailbox_->getImpl(), remains_, rate_,
- srcBuff_, srcBuffSize_,
- matchFunction_, copyDataFunction_,
- userData_, timeout);
- } else { // Receiver
- simcall_comm_recv(receiver_, mailbox_->getImpl(), dstBuff_, &dstBuffSize_,
- matchFunction_, copyDataFunction_,
- userData_, timeout, rate_);
- }
- state_ = finished;
- delete this;
+ int res = simcall_comm_testany(array, comms->size());
+ delete[] array;
+ return res;
}
-s4u::Comm &Comm::send_async(MailboxPtr dest, void *data, int simulatedSize) {
- s4u::Comm &res = s4u::Comm::send_init(dest);
- res.setRemains(simulatedSize);
- res.srcBuff_ = data;
- res.srcBuffSize_ = sizeof(void*);
- res.start();
- return res;
+Activity* Comm::detach()
+{
+ xbt_assert(state_ == inited, "You cannot detach communications once they are started.");
+ xbt_assert(srcBuff_ != nullptr && srcBuffSize_ != 0, "You can only detach sends, not recvs");
+ detached_ = true;
+ return start();
}
-s4u::Comm &Comm::recv_async(MailboxPtr dest, void **data) {
- s4u::Comm &res = s4u::Comm::recv_init(dest);
- res.setDstData(data);
- res.start();
- return res;
+Activity* Comm::cancel()
+{
+ simgrid::kernel::activity::CommImplPtr commPimpl =
+ boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(pimpl_);
+ commPimpl->cancel();
+ return this;
}
-bool Comm::test() {
+bool Comm::test()
+{
xbt_assert(state_ == inited || state_ == started || state_ == finished);
-
- if (state_ == finished)
- xbt_die("Don't call test on a finished comm.");
-
+
+ if (state_ == finished) {
+ return true;
+ }
+
if (state_ == inited) {
this->start();
}
-
+
if(simcall_comm_test(pimpl_)){
state_ = finished;
- delete this;
return true;
}
return false;
}
+MailboxPtr Comm::getMailbox()
+{
+ return mailbox_;
+}
+
+void intrusive_ptr_release(simgrid::s4u::Comm* c)
+{
+ if (c->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
+ std::atomic_thread_fence(std::memory_order_acquire);
+ delete c;
+ }
+}
+void intrusive_ptr_add_ref(simgrid::s4u::Comm* c)
+{
+ c->refcount_.fetch_add(1, std::memory_order_relaxed);
}
}
+} // namespaces
