/* 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"
}
}
-s4u::CommPtr Comm::send_init(s4u::MailboxPtr chan)
-{
- CommPtr res = CommPtr(new s4u::Comm());
- res->sender_ = SIMIX_process_self();
- res->mailbox_ = chan;
- return res;
-}
-
-s4u::CommPtr Comm::recv_init(s4u::MailboxPtr chan)
-{
- CommPtr res = CommPtr(new s4u::Comm());
- res->receiver_ = SIMIX_process_self();
- res->mailbox_ = chan;
- return res;
-}
-
void Comm::setRate(double rate) {
xbt_assert(state_==inited);
rate_ = rate;
}
state_ = started;
}
+
+/** @brief Block the calling actor until the communication is finished */
void Comm::wait() {
- xbt_assert(state_ == started || state_ == inited);
-
- if (state_ == started)
- simcall_comm_wait(pimpl_, -1/*timeout*/);
- else { // 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_);
- }
- }
- state_ = finished;
+ 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. */
void Comm::wait(double timeout) {
- xbt_assert(state_ == started || state_ == inited);
-
- if (state_ == started) {
- simcall_comm_wait(pimpl_, timeout);
- state_ = finished;
- return;
+ switch (state_) {
+ case finished:
+ return;
+
+ 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_, userData_, timeout);
+ } else { // Receiver
+ simcall_comm_recv(receiver_, mailbox_->getImpl(), dstBuff_, &dstBuffSize_, matchFunction_, copyDataFunction_,
+ userData_, timeout, rate_);
+ }
+ state_ = finished;
+ return;
+
+ case started:
+ simcall_comm_wait(pimpl_, timeout);
+ state_ = finished;
+ return;
+
+ default:
+ THROW_IMPOSSIBLE;
}
-
- // 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;
-}
-
-void Comm::send_detached(MailboxPtr dest, void* data, int simulatedSize)
-{
- s4u::CommPtr res = CommPtr(s4u::Comm::send_init(dest));
- res->setRemains(simulatedSize);
- res->srcBuff_ = data;
- res->srcBuffSize_ = sizeof(void*);
- res->detached_ = true;
- res->start();
-}
-
-s4u::CommPtr Comm::send_async(MailboxPtr dest, void* data, int simulatedSize)
-{
- s4u::CommPtr res = CommPtr(s4u::Comm::send_init(dest));
- res->setRemains(simulatedSize);
- res->srcBuff_ = data;
- res->srcBuffSize_ = sizeof(void*);
- res->start();
- return res;
}
-s4u::CommPtr Comm::recv_async(MailboxPtr dest, void** data)
+void Comm::detach()
{
- s4u::CommPtr res = CommPtr(s4u::Comm::recv_init(dest));
- res->setDstData(data, sizeof(*data));
- res->start();
- return res;
+ 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;
+ start();
}
void Comm::cancel()
commPimpl->cancel();
}
-bool Comm::test() {
+bool Comm::test()
+{
xbt_assert(state_ == inited || state_ == started || state_ == finished);
if (state_ == finished) {
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) {
