New: this_actor::isMaestro() returns whether we are in kernel mode

[simgrid.git] / src / s4u / s4u_actor.cpp

diff --git a/src/s4u/s4u_actor.cpp b/src/s4u/s4u_actor.cpp
index 570c181..7b6e968 100644 (file)
--- a/src/s4u/s4u_actor.cpp
+++ b/src/s4u/s4u_actor.cpp
@@ -1,5 +1,4 @@
-/* Copyright (c) 2006-2014. 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. */
@@ -7,11 +6,12 @@
 #include "xbt/log.h"
 
 #include "simgrid/s4u/Actor.hpp"
-#include "simgrid/s4u/comm.hpp"
-#include "simgrid/s4u/host.hpp"
+#include "simgrid/s4u/Comm.hpp"
+#include "simgrid/s4u/Host.hpp"
 #include "simgrid/s4u/Mailbox.hpp"
 
 #include "src/kernel/context/Context.hpp"
+#include <sstream>
 
 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_actor, "S4U actors");
 
@@ -30,7 +30,7 @@ ActorPtr Actor::self()
 
 ActorPtr Actor::createActor(const char* name, s4u::Host* host, std::function<void()> code)
 {
-  smx_actor_t actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
+  simgrid::simix::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
   return actor->iface();
 }
 
@@ -38,7 +38,7 @@ ActorPtr Actor::createActor(const char* name, s4u::Host* host, const char* funct
 {
   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(function);
   simgrid::simix::ActorCode code = factory(std::move(args));
-  smx_actor_t actor                         = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
+  simgrid::simix::ActorImpl* actor          = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
   return actor->iface();
 }
 
@@ -77,12 +77,12 @@ simgrid::xbt::string Actor::name()
   return this->pimpl_->name;
 }
 
-int Actor::pid()
+aid_t Actor::pid()
 {
   return this->pimpl_->pid;
 }
 
-int Actor::ppid()
+aid_t Actor::ppid()
 {
   return this->pimpl_->ppid;
 }
@@ -111,7 +111,8 @@ double Actor::killTime()
   return simcall_process_get_kill_time(pimpl_);
 }
 
-void Actor::kill(int pid) {
+void Actor::kill(aid_t pid)
+{
   smx_actor_t process = SIMIX_process_from_PID(pid);
   if(process != nullptr) {
     simcall_process_kill(process);
@@ -132,7 +133,7 @@ void Actor::kill() {
 
 // ***** Static functions *****
 
-ActorPtr Actor::byPid(int pid)
+ActorPtr Actor::byPid(aid_t pid)
 {
   smx_actor_t process = SIMIX_process_from_PID(pid);
   if (process != nullptr)
@@ -151,10 +152,37 @@ void Actor::killAll(int resetPid)
   simcall_process_killall(resetPid);
 }
 
+/** Retrieve the property value (or nullptr if not set) */
+const char* Actor::property(const char* key)
+{
+  return (char*)xbt_dict_get_or_null(simcall_process_get_properties(pimpl_), key);
+}
+void Actor::setProperty(const char* key, const char* value)
+{
+  simgrid::simix::kernelImmediate([this, key, value] {
+    xbt_dict_set(simcall_process_get_properties(pimpl_), key, (char*)value, (void_f_pvoid_t) nullptr);
+  });
+}
+
 // ***** this_actor *****
 
 namespace this_actor {
 
+/** Returns true if run from the kernel mode, and false if run from a real actor
+ *
+ * Everything that is run out of any actor (simulation setup before the engine is run,
+ * computing the model evolutions as a result to the actors' action, etc) is run in
+ * kernel mode, just as in any operating systems.
+ *
+ * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
+ * because it is the one scheduling when the others should move or wait.
+ */
+bool isMaestro()
+{
+  smx_context_t self_context = SIMIX_context_self();
+  return self_context == nullptr;
+}
+
 void sleep_for(double duration)
 {
   if (duration > 0)
@@ -175,46 +203,51 @@ e_smx_state_t execute(double flops) {
 
 void* recv(MailboxPtr chan) {
   void *res = nullptr;
-  Comm& c = Comm::recv_init(chan);
-  c.setDstData(&res,sizeof(res));
-  c.wait();
+  CommPtr c = Comm::recv_init(chan);
+  c->setDstData(&res, sizeof(res));
+  c->wait();
   return res;
 }
 
 void send(MailboxPtr chan, void* payload, double simulatedSize)
 {
-  Comm& c = Comm::send_init(chan);
-  c.setRemains(simulatedSize);
-  c.setSrcData(payload);
-  // c.start() is optional.
-  c.wait();
+  CommPtr c = Comm::send_init(chan);
+  c->setRemains(simulatedSize);
+  c->setSrcData(payload);
+  // c->start() is optional.
+  c->wait();
 }
 
 void send(MailboxPtr chan, void* payload, double simulatedSize, double timeout)
 {
-  Comm& c = Comm::send_init(chan);
-  c.setRemains(simulatedSize);
-  c.setSrcData(payload);
-  // c.start() is optional.
-  c.wait(timeout);
+  CommPtr c = Comm::send_init(chan);
+  c->setRemains(simulatedSize);
+  c->setSrcData(payload);
+  // c->start() is optional.
+  c->wait(timeout);
 }
 
-Comm& isend(MailboxPtr chan, void* payload, double simulatedSize)
+CommPtr isend(MailboxPtr chan, void* payload, double simulatedSize)
 {
   return Comm::send_async(chan, payload, simulatedSize);
 }
 
-Comm& isend(MailboxPtr chan, void** data)
+void dsend(MailboxPtr chan, void* payload, double simulatedSize)
+{
+  Comm::send_detached(chan, payload, simulatedSize);
+}
+
+CommPtr irecv(MailboxPtr chan, void** data)
 {
   return Comm::recv_async(chan, data);
 }
 
-int pid()
+aid_t pid()
 {
   return SIMIX_process_self()->pid;
 }
 
-int ppid()
+aid_t ppid()
 {
   return SIMIX_process_self()->ppid;
 }