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correct refcounting of ActorPtr
[simgrid.git] / src / simix / ActorImpl.cpp
index b16b66d..445aabc 100644 (file)
 
 #include <boost/range/algorithm.hpp>
 
-#include <xbt/functional.hpp>
-#include <xbt/ex.hpp>
-#include <xbt/sysdep.h>
-#include <xbt/log.h>
-#include <xbt/dict.h>
+#include "xbt/dict.h"
+#include "xbt/ex.hpp"
+#include "xbt/functional.hpp"
+#include "xbt/log.h"
+#include "xbt/sysdep.h"
 
 #include "simgrid/s4u/Host.hpp"
 
-#include <mc/mc.h>
+#include "mc/mc.h"
 
 #include "smx_private.h"
+#include "src/kernel/activity/SleepImpl.hpp"
 #include "src/kernel/activity/SynchroIo.hpp"
 #include "src/kernel/activity/SynchroRaw.hpp"
-#include "src/kernel/activity/SynchroSleep.hpp"
 #include "src/mc/mc_replay.h"
 #include "src/mc/remote/Client.hpp"
 #include "src/msg/msg_private.h"
@@ -81,26 +81,25 @@ int SIMIX_process_has_pending_comms(smx_actor_t process) {
  */
 void SIMIX_process_cleanup(smx_actor_t process)
 {
-  XBT_DEBUG("Cleanup process %s (%p), waiting synchro %p",
-      process->name.c_str(), process, process->waiting_synchro);
+  XBT_DEBUG("Cleanup process %s (%p), waiting synchro %p", process->name.c_str(), process, process->waiting_synchro);
 
   process->finished = true;
   SIMIX_process_on_exit_runall(process);
 
   /* Unregister from the kill timer if any */
   if (process->kill_timer != nullptr)
-      SIMIX_timer_remove(process->kill_timer);
+    SIMIX_timer_remove(process->kill_timer);
 
   xbt_os_mutex_acquire(simix_global->mutex);
 
   /* cancel non-blocking communications */
   smx_activity_t synchro = static_cast<smx_activity_t>(process->comms.front());
-  while (!process->comms.empty()) {
-    simgrid::kernel::activity::Comm *comm = static_cast<simgrid::kernel::activity::Comm*>(synchro);
+  while (not process->comms.empty()) {
+    simgrid::kernel::activity::CommImplPtr comm =
+        boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
 
     /* make sure no one will finish the comm after this process is destroyed,
      * because src_proc or dst_proc would be an invalid pointer */
-    comm->cancel();
 
     if (comm->src_proc == process) {
       XBT_DEBUG("Found an unfinished send comm %p (detached = %d), state %d, src = %p, dst = %p",
@@ -112,9 +111,7 @@ void SIMIX_process_cleanup(smx_actor_t process)
         XBT_DEBUG("Don't destroy it since it's a detached comm and I'm the sender");
       else
         comm->unref();
-
-    }
-    else if (comm->dst_proc == process){
+    } else if (comm->dst_proc == process) {
       XBT_DEBUG("Found an unfinished recv comm %p, state %d, src = %p, dst = %p",
           comm, (int)comm->state, comm->src_proc, comm->dst_proc);
       comm->dst_proc = nullptr;
@@ -123,13 +120,12 @@ void SIMIX_process_cleanup(smx_actor_t process)
         /* the comm will be freed right now, remove it from the sender */
         comm->src_proc->comms.remove(comm);
       }
-      
-      comm->unref();
     } else {
       xbt_die("Communication synchro %p is in my list but I'm not the sender nor the receiver", synchro);
     }
     process->comms.pop_front();
     synchro = static_cast<smx_activity_t>(process->comms.front());
+    comm->cancel();
   }
 
   XBT_DEBUG("%p should not be run anymore",process);
@@ -183,7 +179,7 @@ static int dying_daemon(void* exit_status, void* data)
 /** This process will be terminated automatically when the last non-daemon process finishes */
 void ActorImpl::daemonize()
 {
-  if (!daemon) {
+  if (not daemon) {
     daemon = true;
     simix_global->daemons.push_back(this);
     SIMIX_process_on_exit(this, dying_daemon, this);
@@ -205,10 +201,10 @@ void create_maestro(std::function<void()> code)
   maestro->name = "";
   maestro->data = nullptr;
 
-  if (!code) {
+  if (not code) {
     maestro->context = SIMIX_context_new(std::function<void()>(), nullptr, maestro);
   } else {
-    if (!simix_global)
+    if (not simix_global)
       xbt_die("simix is not initialized, please call MSG_init first");
     maestro->context =
       simix_global->context_factory->create_maestro(code, maestro);
@@ -283,7 +279,7 @@ smx_actor_t SIMIX_process_create(const char* name, std::function<void()> code, v
   if (host->extension<simgrid::simix::Host>() == nullptr)
     host->extension_set<simgrid::simix::Host>(new simgrid::simix::Host());
 
-  /* Add the process to it's host process list */
+  /* Add the process to its host process list */
   xbt_swag_insert(process, host->extension<simgrid::simix::Host>()->process_list);
 
   XBT_DEBUG("Start context '%s'", process->name.c_str());
@@ -292,6 +288,7 @@ smx_actor_t SIMIX_process_create(const char* name, std::function<void()> code, v
   simix_global->process_list[process->pid] = process;
   XBT_DEBUG("Inserting %s(%s) in the to_run list", process->cname(), host->cname());
   xbt_dynar_push_as(simix_global->process_to_run, smx_actor_t, process);
+  intrusive_ptr_add_ref(process);
 
   /* Tracing the process creation */
   TRACE_msg_process_create(process->cname(), process->pid, process->host);
@@ -340,7 +337,7 @@ smx_actor_t SIMIX_process_attach(const char* name, void* data, const char* hostn
   process->code = nullptr;
 
   XBT_VERB("Create context %s", process->name.c_str());
-  if (!simix_global)
+  if (not simix_global)
     xbt_die("simix is not initialized, please call MSG_init first");
   process->context = simix_global->context_factory->attach(
     simix_global->cleanup_process_function, process);
@@ -360,7 +357,7 @@ smx_actor_t SIMIX_process_attach(const char* name, void* data, const char* hostn
   TRACE_msg_process_create(process->cname(), process->pid, process->host);
 
   auto context = dynamic_cast<simgrid::kernel::context::AttachContext*>(process->context);
-  if (!context)
+  if (not context)
     xbt_die("Not a suitable context");
 
   context->attach_start();
@@ -370,7 +367,7 @@ smx_actor_t SIMIX_process_attach(const char* name, void* data, const char* hostn
 void SIMIX_process_detach()
 {
   auto context = dynamic_cast<simgrid::kernel::context::AttachContext*>(SIMIX_context_self());
-  if (!context)
+  if (not context)
     xbt_die("Not a suitable context");
 
   simix_global->cleanup_process_function(context->process());
@@ -428,11 +425,16 @@ void SIMIX_process_kill(smx_actor_t process, smx_actor_t issuer) {
   /* destroy the blocking synchro if any */
   if (process->waiting_synchro) {
 
-    simgrid::kernel::activity::Exec *exec = dynamic_cast<simgrid::kernel::activity::Exec*>(process->waiting_synchro);
-    simgrid::kernel::activity::Comm *comm = dynamic_cast<simgrid::kernel::activity::Comm*>(process->waiting_synchro);
-    simgrid::kernel::activity::Sleep *sleep = dynamic_cast<simgrid::kernel::activity::Sleep*>(process->waiting_synchro);
-    simgrid::kernel::activity::Raw *raw = dynamic_cast<simgrid::kernel::activity::Raw*>(process->waiting_synchro);
-    simgrid::kernel::activity::Io *io = dynamic_cast<simgrid::kernel::activity::Io*>(process->waiting_synchro);
+    simgrid::kernel::activity::ExecImplPtr exec =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro);
+    simgrid::kernel::activity::CommImplPtr comm =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro);
+    simgrid::kernel::activity::SleepImplPtr sleep =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro);
+    simgrid::kernel::activity::RawImplPtr raw =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro);
+    simgrid::kernel::activity::IoImplPtr io =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro);
 
     if (exec != nullptr) {
       exec->unref();
@@ -440,22 +442,17 @@ void SIMIX_process_kill(smx_actor_t process, smx_actor_t issuer) {
     } else if (comm != nullptr) {
       process->comms.remove(process->waiting_synchro);
       comm->cancel();
-
       // Remove first occurrence of &process->simcall:
-      auto i = boost::range::find(
-        process->waiting_synchro->simcalls,
-        &process->simcall);
+      auto i = boost::range::find(process->waiting_synchro->simcalls, &process->simcall);
       if (i != process->waiting_synchro->simcalls.end())
         process->waiting_synchro->simcalls.remove(&process->simcall);
-
       comm->unref();
-
     } else if (sleep != nullptr) {
       SIMIX_process_sleep_destroy(process->waiting_synchro);
 
     } else if (raw != nullptr) {
       SIMIX_synchro_stop_waiting(process, &process->simcall);
-      delete process->waiting_synchro;
+      process->waiting_synchro->unref();
 
     } else if (io != nullptr) {
       SIMIX_io_destroy(process->waiting_synchro);
@@ -470,7 +467,7 @@ void SIMIX_process_kill(smx_actor_t process, smx_actor_t issuer) {
 
     process->waiting_synchro = nullptr;
   }
-  if(!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
+  if (not xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
     XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
     xbt_dynar_push_as(simix_global->process_to_run, smx_actor_t, process);
   }
@@ -492,32 +489,37 @@ void SIMIX_process_throw(smx_actor_t process, xbt_errcat_t cat, int value, const
   /* cancel the blocking synchro if any */
   if (process->waiting_synchro) {
 
-    simgrid::kernel::activity::Exec *exec = dynamic_cast<simgrid::kernel::activity::Exec*>(process->waiting_synchro);
+    simgrid::kernel::activity::ExecImplPtr exec =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro);
     if (exec != nullptr) {
       SIMIX_execution_cancel(process->waiting_synchro);
     }
 
-    simgrid::kernel::activity::Comm *comm = dynamic_cast<simgrid::kernel::activity::Comm*>(process->waiting_synchro);
+    simgrid::kernel::activity::CommImplPtr comm =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro);
     if (comm != nullptr) {
       process->comms.remove(comm);
       comm->cancel();
     }
 
-    simgrid::kernel::activity::Sleep *sleep = dynamic_cast<simgrid::kernel::activity::Sleep*>(process->waiting_synchro);
+    simgrid::kernel::activity::SleepImplPtr sleep =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro);
     if (sleep != nullptr) {
       SIMIX_process_sleep_destroy(process->waiting_synchro);
-      if (!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != SIMIX_process_self()) {
+      if (not xbt_dynar_member(simix_global->process_to_run, &(process)) && process != SIMIX_process_self()) {
         XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
         xbt_dynar_push_as(simix_global->process_to_run, smx_actor_t, process);
       }
     }
 
-    simgrid::kernel::activity::Raw *raw = dynamic_cast<simgrid::kernel::activity::Raw*>(process->waiting_synchro);
+    simgrid::kernel::activity::RawImplPtr raw =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro);
     if (raw != nullptr) {
       SIMIX_synchro_stop_waiting(process, &process->simcall);
     }
 
-    simgrid::kernel::activity::Io *io = dynamic_cast<simgrid::kernel::activity::Io*>(process->waiting_synchro);
+    simgrid::kernel::activity::IoImplPtr io =
+        boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro);
     if (io != nullptr) {
       SIMIX_io_destroy(process->waiting_synchro);
     }
@@ -606,7 +608,7 @@ void SIMIX_process_resume(smx_actor_t process)
     return;
   }
 
-  if (!process->suspended)
+  if (not process->suspended)
     return;
   process->suspended = 0;
 
@@ -638,7 +640,7 @@ void* SIMIX_process_self_get_data()
 {
   smx_actor_t self = SIMIX_process_self();
 
-  if (!self) {
+  if (not self) {
     return nullptr;
   }
   return self->data;
@@ -698,13 +700,14 @@ void simcall_HANDLER_process_join(smx_simcall_t simcall, smx_actor_t process, do
   simcall->issuer->waiting_synchro = sync;
 }
 
-static int SIMIX_process_join_finish(smx_process_exit_status_t status, smx_activity_t synchro){
-  simgrid::kernel::activity::Sleep *sleep = static_cast<simgrid::kernel::activity::Sleep*>(synchro);
+static int SIMIX_process_join_finish(smx_process_exit_status_t status, void* synchro)
+{
+  simgrid::kernel::activity::SleepImpl* sleep = static_cast<simgrid::kernel::activity::SleepImpl*>(synchro);
 
   if (sleep->surf_sleep) {
     sleep->surf_sleep->cancel();
 
-    while (!sleep->simcalls.empty()) {
+    while (not sleep->simcalls.empty()) {
       smx_simcall_t simcall = sleep->simcalls.front();
       sleep->simcalls.pop_front();
       simcall_process_sleep__set__result(simcall, SIMIX_DONE);
@@ -728,14 +731,14 @@ static int SIMIX_process_join_finish(smx_process_exit_status_t status, smx_activ
 smx_activity_t SIMIX_process_join(smx_actor_t issuer, smx_actor_t process, double timeout)
 {
   smx_activity_t res = SIMIX_process_sleep(issuer, timeout);
-  static_cast<simgrid::kernel::activity::ActivityImpl*>(res)->ref();
+  (&*res)->ref();
   /* We are leaking the process here, but if we don't take the ref, we get a "use after free".
    * The correct solution would be to derivate the type SynchroSleep into a SynchroProcessJoin,
    * but the code is not clean enough for now for this.
    * The C API should first be properly replaced with the C++ one, which is a fair amount of work.
    */
   intrusive_ptr_add_ref(process);
-  SIMIX_process_on_exit(process, (int_f_pvoid_pvoid_t)SIMIX_process_join_finish, res);
+  SIMIX_process_on_exit(process, (int_f_pvoid_pvoid_t)SIMIX_process_join_finish, &*res);
   return res;
 }
 
@@ -759,9 +762,9 @@ smx_activity_t SIMIX_process_sleep(smx_actor_t process, double duration)
   if (host->isOff())
     THROWF(host_error, 0, "Host %s failed, you cannot sleep there.", host->cname());
 
-  simgrid::kernel::activity::Sleep *synchro = new simgrid::kernel::activity::Sleep();
+  simgrid::kernel::activity::SleepImpl* synchro = new simgrid::kernel::activity::SleepImpl();
   synchro->host = host;
-  synchro->surf_sleep                       = host->pimpl_cpu->sleep(duration);
+  synchro->surf_sleep                           = host->pimpl_cpu->sleep(duration);
   synchro->surf_sleep->setData(synchro);
   XBT_DEBUG("Create sleep synchronization %p", synchro);
 
@@ -771,7 +774,8 @@ smx_activity_t SIMIX_process_sleep(smx_actor_t process, double duration)
 void SIMIX_process_sleep_destroy(smx_activity_t synchro)
 {
   XBT_DEBUG("Destroy synchro %p", synchro);
-  simgrid::kernel::activity::Sleep *sleep = static_cast<simgrid::kernel::activity::Sleep*>(synchro);
+  simgrid::kernel::activity::SleepImplPtr sleep =
+      boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(synchro);
 
   if (sleep->surf_sleep) {
     sleep->surf_sleep->unref();
@@ -885,7 +889,7 @@ xbt_dynar_t SIMIX_processes_as_dynar() {
 void SIMIX_process_on_exit_runall(smx_actor_t process) {
   s_smx_process_exit_fun_t exit_fun;
   smx_process_exit_status_t exit_status = (process->context->iwannadie) ? SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS;
-  while (!process->on_exit.empty()) {
+  while (not process->on_exit.empty()) {
     exit_fun = process->on_exit.back();
     (exit_fun.fun)((void*)exit_status, exit_fun.arg);
     process->on_exit.pop_back();