add capacity to set priorities on I/Os + example

[simgrid.git] / src / kernel / activity / ConditionVariableImpl.cpp

diff --git a/src/kernel/activity/ConditionVariableImpl.cpp b/src/kernel/activity/ConditionVariableImpl.cpp
index 87683e1..1a0a73b 100644 (file)
--- a/src/kernel/activity/ConditionVariableImpl.cpp
+++ b/src/kernel/activity/ConditionVariableImpl.cpp
@@ -4,22 +4,15 @@
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
 #include "src/kernel/activity/ConditionVariableImpl.hpp"
-#include "simgrid/Exception.hpp"
 #include "src/kernel/activity/MutexImpl.hpp"
 #include "src/kernel/activity/SynchroRaw.hpp"
-#include "src/mc/checker/SimcallObserver.hpp"
+#include "src/kernel/actor/SimcallObserver.hpp"
+#include <cmath> // std::isfinite
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_condition, simix_synchro, "Condition variables");
 
 /********************************* Condition **********************************/
 
-/** @brief Handle a condition waiting simcall with timeouts */
-void simcall_HANDLER_cond_wait_timeout(smx_simcall_t simcall, smx_cond_t cond, smx_mutex_t mutex, double timeout)
-{
-  simcall_cond_wait_timeout__set__result(simcall, 0); // default result, will be set to 1 on timeout
-  cond->wait(mutex, timeout, simcall->issuer_);
-}
-
 namespace simgrid {
 namespace kernel {
 namespace activity {
@@ -27,15 +20,14 @@ namespace activity {
 /**
  * @brief Signalizes a condition.
  *
- * Signalizes a condition and wakes up a sleeping process.
- * If there are no process sleeping, no action is done.
+ * Signalizes a condition and wakes up a sleeping actor.
+ * If there are no actor sleeping, no action is done.
  */
 void ConditionVariableImpl::signal()
 {
   XBT_DEBUG("Signal condition %p", this);
 
-  /* If there are processes waiting for the condition choose one and try
-     to make it acquire the mutex */
+  /* If there are actors waiting for the condition choose one and try to make it acquire the mutex */
   if (not sleeping_.empty()) {
     auto& proc = sleeping_.front();
     sleeping_.pop_front();
@@ -45,18 +37,9 @@ void ConditionVariableImpl::signal()
 
     /* Now transform the cond wait simcall into a mutex lock one */
     smx_simcall_t simcall = &proc.simcall_;
-    MutexImpl* simcall_mutex;
-    if (simcall->call_ == simix::Simcall::COND_WAIT_TIMEOUT)
-      simcall_mutex = simcall_cond_wait_timeout__get__mutex(simcall);
-    else {
-      // FIXME? using here the MC observer to solve a problem not related to MC
-      const auto* observer = dynamic_cast<mc::ConditionWaitSimcall*>(simcall->observer_);
-      xbt_assert(observer != nullptr);
-      simcall_mutex = observer->get_mutex();
-    }
-    simcall->call_ = simix::Simcall::RUN_BLOCKING;
-
-    simcall_mutex->lock(simcall->issuer_);
+    const auto* observer  = dynamic_cast<kernel::actor::ConditionWaitSimcall*>(simcall->observer_);
+    xbt_assert(observer != nullptr);
+    observer->get_mutex()->lock(simcall->issuer_);
   }
   XBT_OUT();
 }
@@ -64,8 +47,8 @@ void ConditionVariableImpl::signal()
 /**
  * @brief Broadcasts a condition.
  *
- * Signal ALL processes waiting on a condition.
- * If there are no process waiting, no action is done.
+ * Signal ALL actors waiting on a condition.
+ * If there are no actor waiting, no action is done.
  */
 void ConditionVariableImpl::broadcast()
 {
@@ -79,6 +62,7 @@ void ConditionVariableImpl::broadcast()
 void ConditionVariableImpl::wait(smx_mutex_t mutex, double timeout, actor::ActorImpl* issuer)
 {
   XBT_DEBUG("Wait condition %p", this);
+  xbt_assert(std::isfinite(timeout), "timeout is not finite!");
 
   /* If there is a mutex unlock it */
   if (mutex != nullptr) {
@@ -91,8 +75,9 @@ void ConditionVariableImpl::wait(smx_mutex_t mutex, double timeout, actor::Actor
 
   RawImplPtr synchro(new RawImpl([this, issuer]() {
     this->remove_sleeping_actor(*issuer);
-    if (issuer->simcall_.call_ == simix::Simcall::COND_WAIT_TIMEOUT)
-      simcall_cond_wait_timeout__set__result(&issuer->simcall_, 1);
+    auto* observer = dynamic_cast<kernel::actor::ConditionWaitSimcall*>(issuer->simcall_.observer_);
+    xbt_assert(observer != nullptr);
+    observer->set_result(true);
   }));
   synchro->set_host(issuer->get_host()).set_timeout(timeout).start();
   synchro->register_simcall(&issuer->simcall_);
@@ -100,12 +85,12 @@ void ConditionVariableImpl::wait(smx_mutex_t mutex, double timeout, actor::Actor
 }
 
 // boost::intrusive_ptr<ConditionVariableImpl> support:
-void intrusive_ptr_add_ref(simgrid::kernel::activity::ConditionVariableImpl* cond)
+void intrusive_ptr_add_ref(ConditionVariableImpl* cond)
 {
   cond->refcount_.fetch_add(1, std::memory_order_relaxed);
 }
 
-void intrusive_ptr_release(simgrid::kernel::activity::ConditionVariableImpl* cond)
+void intrusive_ptr_release(ConditionVariableImpl* cond)
 {
   if (cond->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
     std::atomic_thread_fence(std::memory_order_acquire);