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Implement I/O as asynchronous activities
[simgrid.git] / src / simix / libsmx.cpp
index b26dcb7..0ec3f39 100644 (file)
@@ -5,85 +5,69 @@
 /*                                                                            */
 /* This is somehow the "libc" of SimGrid                                      */
 
-/* Copyright (c) 2010-2015. The SimGrid Team.
- * All rights reserved.                                                     */
+/* Copyright (c) 2010-2018. 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 <cmath>         /* std::isfinite() */
-
-#include <functional>
-
 #include "mc/mc.h"
-#include "simgrid/s4u/VirtualMachine.hpp"
-#include "simgrid/simix.hpp"
 #include "simgrid/simix/blocking_simcall.hpp"
-#include "smx_private.h"
 #include "src/kernel/activity/CommImpl.hpp"
-#include "src/mc/mc_forward.hpp"
-#include "src/mc/mc_replay.h"
+#include "src/kernel/activity/ConditionVariableImpl.hpp"
+#include "src/kernel/activity/ExecImpl.hpp"
+#include "src/kernel/activity/IoImpl.hpp"
+#include "src/kernel/activity/MutexImpl.hpp"
+#include "src/mc/mc_replay.hpp"
 #include "src/plugins/vm/VirtualMachineImpl.hpp"
-#include "src/simix/smx_host_private.h"
-#include "xbt/ex.h"
-#include "xbt/functional.hpp"
+#include "src/simix/smx_host_private.hpp"
+#include "src/simix/smx_io_private.hpp"
 
 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix);
 
 #include "popping_bodies.cpp"
 
-void simcall_call(smx_actor_t actor)
-{
-  if (actor != simix_global->maestro_process) {
-    XBT_DEBUG("Yield actor '%s' on simcall %s (%d)", actor->cname(), SIMIX_simcall_name(actor->simcall.call),
-              (int)actor->simcall.call);
-    SIMIX_process_yield(actor);
-  } else {
-    SIMIX_simcall_handle(&actor->simcall, 0);
-  }
-}
-
 /**
- * \ingroup simix_process_management
- * \brief Creates a synchro that executes some computation of an host.
+ * @ingroup simix_process_management
+ * @brief Creates a synchro that executes some computation of an host.
  *
  * This function creates a SURF action and allocates the data necessary
  * to create the SIMIX synchro. It can raise a host_error exception if the host crashed.
  *
- * \param name Name of the execution synchro to create
- * \param flops_amount amount Computation amount (in flops)
- * \param priority computation priority
- * \param bound
- * \return A new SIMIX execution synchronization
+ * @param name Name of the execution synchro to create
+ * @param flops_amount amount Computation amount (in flops)
+ * @param priority computation priority
+ * @param bound
+ * @param host host where the synchro will be executed
+ * @return A new SIMIX execution synchronization
  */
-smx_activity_t simcall_execution_start(const char *name,
-                                    double flops_amount,
-                                    double priority, double bound)
+smx_activity_t simcall_execution_start(std::string name, std::string category, double flops_amount, double priority,
+                                       double bound, simgrid::s4u::Host* host)
 {
   /* checking for infinite values */
   xbt_assert(std::isfinite(flops_amount), "flops_amount is not finite!");
   xbt_assert(std::isfinite(priority), "priority is not finite!");
 
-  return simcall_BODY_execution_start(name, flops_amount, priority, bound);
+  return simgrid::simix::simcall([name, category, flops_amount, priority, bound, host] {
+    return SIMIX_execution_start(name, category, flops_amount, priority, bound, host);
+  });
 }
 
 /**
- * \ingroup simix_process_management
- * \brief Creates a synchro that may involve parallel computation on
+ * @ingroup simix_process_management
+ * @brief Creates a synchro that may involve parallel computation on
  * several hosts and communication between them.
  *
- * \param name Name of the execution synchro to create
- * \param host_nb Number of hosts where the synchro will be executed
- * \param host_list Array (of size host_nb) of hosts where the synchro will be executed
- * \param flops_amount Array (of size host_nb) of computation amount of hosts (in bytes)
- * \param bytes_amount Array (of size host_nb * host_nb) representing the communication
+ * @param name Name of the execution synchro to create
+ * @param host_nb Number of hosts where the synchro will be executed
+ * @param host_list Array (of size host_nb) of hosts where the synchro will be executed
+ * @param flops_amount Array (of size host_nb) of computation amount of hosts (in bytes)
+ * @param bytes_amount Array (of size host_nb * host_nb) representing the communication
  * amount between each pair of hosts
- * \param amount the SURF action amount
- * \param rate the SURF action rate
- * \param timeout timeout
- * \return A new SIMIX execution synchronization
+ * @param rate the SURF action rate
+ * @param timeout timeout
+ * @return A new SIMIX execution synchronization
  */
-smx_activity_t simcall_execution_parallel_start(const char* name, int host_nb, sg_host_t* host_list,
+smx_activity_t simcall_execution_parallel_start(std::string name, int host_nb, sg_host_t* host_list,
                                                 double* flops_amount, double* bytes_amount, double rate, double timeout)
 {
   /* checking for infinite values */
@@ -99,95 +83,78 @@ smx_activity_t simcall_execution_parallel_start(const char* name, int host_nb, s
 
   xbt_assert(std::isfinite(rate), "rate is not finite!");
 
-  return simcall_BODY_execution_parallel_start(name, host_nb, host_list, flops_amount, bytes_amount, rate, timeout);
+  return simgrid::simix::simcall([name, host_nb, host_list, flops_amount, bytes_amount, rate, timeout] {
+    return SIMIX_execution_parallel_start(name, host_nb, host_list, flops_amount, bytes_amount, rate, timeout);
+  });
 }
 
 /**
- * \ingroup simix_process_management
- * \brief Cancels an execution synchro.
+ * @ingroup simix_process_management
+ * @brief Cancels an execution synchro.
  *
  * This functions stops the execution. It calls a surf function.
- * \param execution The execution synchro to cancel
+ * @param execution The execution synchro to cancel
  */
 void simcall_execution_cancel(smx_activity_t execution)
 {
-  simgrid::simix::kernelImmediate([execution] {
-    XBT_DEBUG("Cancel synchro %p", execution.get());
-    simgrid::kernel::activity::ExecImplPtr exec =
-        boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(execution);
-
-    if (exec->surf_exec)
-      exec->surf_exec->cancel();
-  });
+  simgrid::kernel::activity::ExecImplPtr exec =
+      boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(execution);
+  if (exec->surf_action_ == nullptr) // FIXME: One test fails if I remove this, but I don't get why...
+    return;
+  simgrid::simix::simcall([exec] { exec->cancel(); });
 }
 
 /**
- * \ingroup simix_process_management
- * \brief Changes the priority of an execution synchro.
+ * @ingroup simix_process_management
+ * @brief Changes the priority of an execution synchro.
  *
  * This functions changes the priority only. It calls a surf function.
- * \param execution The execution synchro
- * \param priority The new priority
+ * @param execution The execution synchro
+ * @param priority The new priority
  */
 void simcall_execution_set_priority(smx_activity_t execution, double priority)
 {
   /* checking for infinite values */
   xbt_assert(std::isfinite(priority), "priority is not finite!");
-  simgrid::simix::kernelImmediate([execution, priority] {
+  simgrid::simix::simcall([execution, priority] {
 
     simgrid::kernel::activity::ExecImplPtr exec =
         boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(execution);
-    if (exec->surf_exec)
-      exec->surf_exec->setSharingWeight(priority);
+    exec->set_priority(priority);
   });
 }
 
 /**
- * \ingroup simix_process_management
- * \brief Changes the capping (the maximum CPU utilization) of an execution synchro.
+ * @ingroup simix_process_management
+ * @brief Changes the capping (the maximum CPU utilization) of an execution synchro.
  *
  * This functions changes the capping only. It calls a surf function.
- * \param execution The execution synchro
- * \param bound The new bound
+ * @param execution The execution synchro
+ * @param bound The new bound
  */
 void simcall_execution_set_bound(smx_activity_t execution, double bound)
 {
-  simgrid::simix::kernelImmediate([execution, bound] {
+  simgrid::simix::simcall([execution, bound] {
     simgrid::kernel::activity::ExecImplPtr exec =
         boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(execution);
-    if (exec->surf_exec)
-      static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
+    exec->set_bound(bound);
   });
 }
 
 /**
- * \ingroup simix_host_management
- * \brief Waits for the completion of an execution synchro and destroy it.
+ * @ingroup simix_host_management
+ * @brief Waits for the completion of an execution synchro and destroy it.
  *
- * \param execution The execution synchro
+ * @param execution The execution synchro
  */
 e_smx_state_t simcall_execution_wait(smx_activity_t execution)
 {
   return (e_smx_state_t) simcall_BODY_execution_wait(execution);
 }
 
-/**
- * \ingroup simix_process_management
- * \brief Kills all SIMIX processes.
- */
-void simcall_process_killall(int reset_pid)
+e_smx_state_t simcall_execution_test(smx_activity_t execution)
 {
-  simcall_BODY_process_killall(reset_pid);
-}
-
-/**
- * \ingroup simix_process_management
- * \brief Cleans up a SIMIX process.
- * \param process poor victim (must have already been killed)
- */
-void simcall_process_cleanup(smx_actor_t process)
-{
-  simcall_BODY_process_cleanup(process);
+  return (e_smx_state_t)simcall_BODY_execution_test(execution);
 }
 
 void simcall_process_join(smx_actor_t process, double timeout)
@@ -196,13 +163,13 @@ void simcall_process_join(smx_actor_t process, double timeout)
 }
 
 /**
- * \ingroup simix_process_management
- * \brief Suspends a process.
+ * @ingroup simix_process_management
+ * @brief Suspends a process.
  *
  * This function suspends the process by suspending the synchro
  * it was waiting for completion.
  *
- * \param process a SIMIX process
+ * @param process a SIMIX process
  */
 void simcall_process_suspend(smx_actor_t process)
 {
@@ -210,39 +177,28 @@ void simcall_process_suspend(smx_actor_t process)
 }
 
 /**
- * \ingroup simix_process_management
- * \brief Returns the amount of SIMIX processes in the system
+ * @ingroup simix_process_management
+ * @brief Set the user data of a #smx_actor_t.
  *
- * Maestro internal process is not counted, only user code processes are
- */
-int simcall_process_count()
-{
-  return simgrid::simix::kernelImmediate(SIMIX_process_count);
-}
-
-/**
- * \ingroup simix_process_management
- * \brief Set the user data of a #smx_actor_t.
- *
- * This functions sets the user data associated to \a process.
- * \param process SIMIX process
- * \param data User data
+ * This functions sets the user data associated to @a process.
+ * @param process SIMIX process
+ * @param data User data
  */
 void simcall_process_set_data(smx_actor_t process, void *data)
 {
-  simgrid::simix::kernelImmediate([process, data] { process->setUserData(data); });
+  simgrid::simix::simcall([process, data] { process->set_user_data(data); });
 }
 
 /**
- * \ingroup simix_process_management
- * \brief Set the kill time of a process.
+ * @ingroup simix_process_management
+ * @brief Set the kill time of a process.
  */
 void simcall_process_set_kill_time(smx_actor_t process, double kill_time)
 {
 
   if (kill_time <= SIMIX_get_clock() || simix_global->kill_process_function == nullptr)
     return;
-  XBT_DEBUG("Set kill time %f for process %s@%s", kill_time, process->cname(), process->host->getCname());
+  XBT_DEBUG("Set kill time %f for process %s@%s", kill_time, process->get_cname(), process->host_->get_cname());
   process->kill_timer = SIMIX_timer_set(kill_time, [process] {
     simix_global->kill_process_function(process);
     process->kill_timer=nullptr;
@@ -250,25 +206,15 @@ void simcall_process_set_kill_time(smx_actor_t process, double kill_time)
 }
 
 /**
- * \ingroup simix_process_management
- * \brief Add an on_exit function
- * Add an on_exit function which will be executed when the process exits/is killed.
- */
-XBT_PUBLIC(void) simcall_process_on_exit(smx_actor_t process, int_f_pvoid_pvoid_t fun, void *data)
-{
-  simcall_BODY_process_on_exit(process, fun, data);
-}
-
-/**
- * \ingroup simix_process_management
- * \brief Creates a new sleep SIMIX synchro.
+ * @ingroup simix_process_management
+ * @brief Creates a new sleep SIMIX synchro.
  *
  * This function creates a SURF action and allocates the data necessary
  * to create the SIMIX synchro. It can raise a host_error exception if the
  * host crashed. The default SIMIX name of the synchro is "sleep".
  *
- *   \param duration Time duration of the sleep.
- *   \return A result telling whether the sleep was successful
+ *   @param duration Time duration of the sleep.
+ *   @return A result telling whether the sleep was successful
  */
 e_smx_state_t simcall_process_sleep(double duration)
 {
@@ -278,7 +224,7 @@ e_smx_state_t simcall_process_sleep(double duration)
 }
 
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  */
 void simcall_comm_send(smx_actor_t sender, smx_mailbox_t mbox, double task_size, double rate, void* src_buff,
                        size_t src_buff_size, int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
@@ -306,7 +252,7 @@ void simcall_comm_send(smx_actor_t sender, smx_mailbox_t mbox, double task_size,
 }
 
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  */
 smx_activity_t simcall_comm_isend(smx_actor_t sender, smx_mailbox_t mbox, double task_size, double rate, void* src_buff,
                                   size_t src_buff_size,
@@ -326,7 +272,7 @@ smx_activity_t simcall_comm_isend(smx_actor_t sender, smx_mailbox_t mbox, double
 }
 
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  */
 void simcall_comm_recv(smx_actor_t receiver, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
                        int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
@@ -349,7 +295,7 @@ void simcall_comm_recv(smx_actor_t receiver, smx_mailbox_t mbox, void* dst_buff,
   }
 }
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  */
 smx_activity_t simcall_comm_irecv(smx_actor_t receiver, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
                                   int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
@@ -362,7 +308,7 @@ smx_activity_t simcall_comm_irecv(smx_actor_t receiver, smx_mailbox_t mbox, void
 }
 
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  */
 smx_activity_t simcall_comm_iprobe(smx_mailbox_t mbox, int type,
                                    int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*), void* data)
@@ -373,11 +319,11 @@ smx_activity_t simcall_comm_iprobe(smx_mailbox_t mbox, int type,
 }
 
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  */
 void simcall_comm_cancel(smx_activity_t synchro)
 {
-  simgrid::simix::kernelImmediate([synchro] {
+  simgrid::simix::simcall([synchro] {
     simgrid::kernel::activity::CommImplPtr comm =
         boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
     comm->cancel();
@@ -385,7 +331,7 @@ void simcall_comm_cancel(smx_activity_t synchro)
 }
 
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  */
 unsigned int simcall_comm_waitany(xbt_dynar_t comms, double timeout)
 {
@@ -393,7 +339,7 @@ unsigned int simcall_comm_waitany(xbt_dynar_t comms, double timeout)
 }
 
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  */
 int simcall_comm_testany(smx_activity_t* comms, size_t count)
 {
@@ -403,7 +349,7 @@ int simcall_comm_testany(smx_activity_t* comms, size_t count)
 }
 
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  */
 void simcall_comm_wait(smx_activity_t comm, double timeout)
 {
@@ -412,22 +358,22 @@ void simcall_comm_wait(smx_activity_t comm, double timeout)
 }
 
 /**
- * \brief Set the category of an synchro.
+ * @brief Set the category of an synchro.
  *
  * This functions changes the category only. It calls a surf function.
- * \param synchro The execution synchro
- * \param category The tracing category
+ * @param synchro The execution synchro
+ * @param category The tracing category
  */
-void simcall_set_category(smx_activity_t synchro, const char *category)
+void simcall_set_category(smx_activity_t synchro, std::string category)
 {
-  if (category == nullptr) {
+  if (category.empty()) {
     return;
   }
-  simcall_BODY_set_category(synchro, category);
+  simgrid::simix::simcall([synchro, category] { SIMIX_set_category(synchro, category); });
 }
 
 /**
- * \ingroup simix_comm_management
+ * @ingroup simix_comm_management
  *
  */
 int simcall_comm_test(smx_activity_t comm)
@@ -436,7 +382,7 @@ int simcall_comm_test(smx_activity_t comm)
 }
 
 /**
- * \ingroup simix_synchro_management
+ * @ingroup simix_synchro_management
  *
  */
 smx_mutex_t simcall_mutex_init()
@@ -445,11 +391,11 @@ smx_mutex_t simcall_mutex_init()
     fprintf(stderr,"You must run MSG_init before using MSG\n"); // We can't use xbt_die since we may get there before the initialization
     xbt_abort();
   }
-  return simgrid::simix::kernelImmediate([] { return new simgrid::simix::MutexImpl(); });
+  return simgrid::simix::simcall([] { return new simgrid::kernel::activity::MutexImpl(); });
 }
 
 /**
- * \ingroup simix_synchro_management
+ * @ingroup simix_synchro_management
  *
  */
 void simcall_mutex_lock(smx_mutex_t mutex)
@@ -458,7 +404,7 @@ void simcall_mutex_lock(smx_mutex_t mutex)
 }
 
 /**
- * \ingroup simix_synchro_management
+ * @ingroup simix_synchro_management
  *
  */
 int simcall_mutex_trylock(smx_mutex_t mutex)
@@ -467,7 +413,7 @@ int simcall_mutex_trylock(smx_mutex_t mutex)
 }
 
 /**
- * \ingroup simix_synchro_management
+ * @ingroup simix_synchro_management
  *
  */
 void simcall_mutex_unlock(smx_mutex_t mutex)
@@ -476,25 +422,16 @@ void simcall_mutex_unlock(smx_mutex_t mutex)
 }
 
 /**
- * \ingroup simix_synchro_management
+ * @ingroup simix_synchro_management
  *
  */
 smx_cond_t simcall_cond_init()
 {
-  return simcall_BODY_cond_init();
-}
-
-/**
- * \ingroup simix_synchro_management
- *
- */
-void simcall_cond_signal(smx_cond_t cond)
-{
-  simcall_BODY_cond_signal(cond);
+  return simgrid::simix::simcall([] { return new simgrid::kernel::activity::ConditionVariableImpl(); });
 }
 
 /**
- * \ingroup simix_synchro_management
+ * @ingroup simix_synchro_management
  *
  */
 void simcall_cond_wait(smx_cond_t cond, smx_mutex_t mutex)
@@ -503,28 +440,17 @@ void simcall_cond_wait(smx_cond_t cond, smx_mutex_t mutex)
 }
 
 /**
- * \ingroup simix_synchro_management
+ * @ingroup simix_synchro_management
  *
  */
-void simcall_cond_wait_timeout(smx_cond_t cond,
-                                 smx_mutex_t mutex,
-                                 double timeout)
+int simcall_cond_wait_timeout(smx_cond_t cond, smx_mutex_t mutex, double timeout)
 {
   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
-  simcall_BODY_cond_wait_timeout(cond, mutex, timeout);
+  return simcall_BODY_cond_wait_timeout(cond, mutex, timeout);
 }
 
 /**
- * \ingroup simix_synchro_management
- *
- */
-void simcall_cond_broadcast(smx_cond_t cond)
-{
-  simcall_BODY_cond_broadcast(cond);
-}
-
-/**
- * \ingroup simix_synchro_management
+ * @ingroup simix_synchro_management
  *
  */
 void simcall_sem_acquire(smx_sem_t sem)
@@ -533,31 +459,31 @@ void simcall_sem_acquire(smx_sem_t sem)
 }
 
 /**
- * \ingroup simix_synchro_management
+ * @ingroup simix_synchro_management
  *
  */
-void simcall_sem_acquire_timeout(smx_sem_t sem, double timeout)
+int simcall_sem_acquire_timeout(smx_sem_t sem, double timeout)
 {
   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
-  simcall_BODY_sem_acquire_timeout(sem, timeout);
+  return simcall_BODY_sem_acquire_timeout(sem, timeout);
 }
 
-/**
- * \ingroup simix_file_management
- *
- */
-sg_size_t simcall_file_read(surf_file_t fd, sg_size_t size)
+smx_activity_t simcall_io_start(std::string name, sg_size_t size, simgrid::s4u::Storage* storage)
 {
-  return simcall_BODY_file_read(fd, size);
+  /* checking for infinite values */
+  xbt_assert(std::isfinite(size), "size is not finite!");
+
+  return simgrid::simix::simcall([name, size, storage] { return SIMIX_io_start(name, size, storage); });
 }
 
-/**
- * \ingroup simix_file_management
- *
- */
-sg_size_t simcall_file_write(surf_file_t fd, sg_size_t size)
+sg_size_t simcall_storage_read(surf_storage_t st, sg_size_t size)
+{
+  return simcall_BODY_storage_read(st, size);
+}
+
+sg_size_t simcall_storage_write(surf_storage_t st, sg_size_t size)
 {
-  return simcall_BODY_file_write(fd, size);
+  return simcall_BODY_storage_write(st, size);
 }
 
 void simcall_run_kernel(std::function<void()> const& code)