X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/26af220e017a088b56105b2f21fadecf7d6e2a88..4b95f054f8e620b68676f19b9db38002889538c6:/src/mc/mc_base.cpp

diff --git a/src/mc/mc_base.cpp b/src/mc/mc_base.cpp
index 9144932640..f68fc96a9b 100644
--- a/src/mc/mc_base.cpp
+++ b/src/mc/mc_base.cpp
@@ -1,39 +1,53 @@
-/* Copyright (c) 2008-2014. The SimGrid Team.
+/* Copyright (c) 2008-2015. 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 <assert.h>
+#include <cassert>
+
+#include <simgrid_config.h>
+
+#include <xbt/log.h>
+#include <xbt/asserts.h>
+#include <xbt/dynar.h>
 
 #include <simgrid/simix.h>
 
-#include "mc_base.h"
-#include "../simix/smx_private.h"
-#include "mc/mc_record.h"
-#include "mc/mc_replay.h"
+#include "src/mc/mc_base.h"
+#include "src/simix/smx_private.h"
+#include "src/mc/mc_replay.h"
 #include "mc/mc.h"
+#include "src/mc/mc_protocol.h"
 
-#ifdef HAVE_MC
-#include "mc_process.h"
-#include "ModelChecker.hpp"
-#include "mc_protocol.h"
-#include "mc_smx.h"
-#include "mc_server.h"
+#if HAVE_MC
+#include "src/mc/mc_request.h"
+#include "src/mc/Process.hpp"
+#include "src/mc/ModelChecker.hpp"
+#include "src/mc/mc_smx.h"
 #endif
 
-extern "C" {
+#if HAVE_MC
+using simgrid::mc::remote;
+#endif
 
 XBT_LOG_NEW_CATEGORY(mc, "All MC categories");
 
-void MC_wait_for_requests(void)
+int MC_random(int min, int max)
 {
-#ifdef HAVE_MC
-  if (mc_mode == MC_MODE_SERVER) {
-    MC_server_wait_client(&mc_model_checker->process());
-    return;
-  }
-#endif
+  xbt_assert(mc_mode != MC_MODE_SERVER);
+  /* TODO, if the MC is disabled we do not really need to make a simcall for
+   * this :) */
+  /* FIXME: return mc_current_state->executed_transition->random.value; */
+  return simcall_mc_random(min, max);
+}
+
+namespace simgrid {
+namespace mc {
+
+void wait_for_requests(void)
+{
+  assert(mc_mode != MC_MODE_SERVER);
 
   smx_process_t process;
   smx_simcall_t req;
@@ -43,34 +57,33 @@ void MC_wait_for_requests(void)
     SIMIX_process_runall();
     xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
       req = &process->simcall;
-      if (req->call != SIMCALL_NONE && !MC_request_is_visible(req))
+      if (req->call != SIMCALL_NONE && !simgrid::mc::request_is_visible(req))
         SIMIX_simcall_handle(req, 0);
     }
   }
 }
 
-int MC_request_is_enabled(smx_simcall_t req)
+// Called from both MCer and MCed:
+bool request_is_enabled(smx_simcall_t req)
 {
   unsigned int index = 0;
   smx_synchro_t act = 0;
-#ifdef HAVE_MC
+#if HAVE_MC
   s_smx_synchro_t temp_synchro;
 #endif
 
   switch (req->call) {
   case SIMCALL_NONE:
-    return FALSE;
+    return false;
 
   case SIMCALL_COMM_WAIT:
     /* FIXME: check also that src and dst processes are not suspended */
     act = simcall_comm_wait__get__comm(req);
 
-#ifdef HAVE_MC
+#if HAVE_MC
     // Fetch from MCed memory:
-    if (!MC_process_is_self(&mc_model_checker->process())) {
-      MC_process_read(&mc_model_checker->process(), MC_ADDRESS_SPACE_READ_FLAGS_NONE,
-        &temp_synchro, act, sizeof(temp_synchro),
-        MC_PROCESS_INDEX_ANY);
+    if (mc_mode == MC_MODE_SERVER) {
+      mc_model_checker->process().read(&temp_synchro, remote(act));
       act = &temp_synchro;
     }
 #endif
@@ -79,67 +92,72 @@ int MC_request_is_enabled(smx_simcall_t req)
       /* If it has a timeout it will be always be enabled, because even if the
        * communication is not ready, it can timeout and won't block. */
       if (_sg_mc_timeout == 1)
-        return TRUE;
-    } else {
-      /* On the other hand if it hasn't a timeout, check if the comm is ready.*/
-      if (act->comm.detached && act->comm.src_proc == NULL
-          && act->comm.type == SIMIX_COMM_READY)
-        return (act->comm.dst_proc != NULL);
+        return true;
     }
+    /* On the other hand if it hasn't a timeout, check if the comm is ready.*/
+    else if (act->comm.detached && act->comm.src_proc == nullptr
+          && act->comm.type == SIMIX_COMM_READY)
+        return (act->comm.dst_proc != nullptr);
     return (act->comm.src_proc && act->comm.dst_proc);
 
   case SIMCALL_COMM_WAITANY: {
-#ifdef HAVE_MC
-    // Read dynar:
-    s_xbt_dynar_t comms;
-    MC_process_read_simple(&mc_model_checker->process(),
-      &comms, simcall_comm_waitany__get__comms(req), sizeof(comms));
-    // Read dynar buffer:
-    assert(comms.elmsize == sizeof(act));
-    size_t buffer_size = comms.elmsize * comms.used;
+    xbt_dynar_t comms;
+#if HAVE_MC
+
+    s_xbt_dynar_t comms_buffer;
+    size_t buffer_size = 0;
+    if (mc_mode == MC_MODE_SERVER) {
+      // Read dynar:
+      mc_model_checker->process().read(
+        &comms_buffer, remote(simcall_comm_waitany__get__comms(req)));
+      assert(comms_buffer.elmsize == sizeof(act));
+      buffer_size = comms_buffer.elmsize * comms_buffer.used;
+      comms = &comms_buffer;
+    } else
+      comms = simcall_comm_waitany__get__comms(req);
+
+    // Read all the dynar buffer:
     char buffer[buffer_size];
-    MC_process_read_simple(&mc_model_checker->process(),
-      buffer, comms.data, sizeof(buffer));
-#endif
-
-#ifdef HAVE_MC
-    for (index = 0; index < comms.used; ++index) {
-      memcpy(&act, buffer + comms.elmsize * index, sizeof(act));
+    if (mc_mode == MC_MODE_SERVER)
+      mc_model_checker->process().read_bytes(buffer, sizeof(buffer),
+        remote(comms->data));
 #else
-    xbt_dynar_foreach(simcall_comm_waitany__get__comms(req), index, act) {
+    comms = simcall_comm_waitany__get__comms(req);
 #endif
 
-#ifdef HAVE_MC
-      // Fetch from MCed memory:
-      if (!MC_process_is_self(&mc_model_checker->process())) {
-        MC_process_read(&mc_model_checker->process(), MC_ADDRESS_SPACE_READ_FLAGS_NONE,
-          &temp_synchro, act, sizeof(temp_synchro),
-          MC_PROCESS_INDEX_ANY);
+    for (index = 0; index < comms->used; ++index) {
+#if HAVE_MC
+      // Fetch act from MCed memory:
+      if (mc_mode == MC_MODE_SERVER) {
+        memcpy(&act, buffer + comms->elmsize * index, sizeof(act));
+        mc_model_checker->process().read(&temp_synchro, remote(act));
         act = &temp_synchro;
       }
+      else
 #endif
-
+        act = xbt_dynar_get_as(comms, index, smx_synchro_t);
       if (act->comm.src_proc && act->comm.dst_proc)
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
   }
 
+  case SIMCALL_MUTEX_TRYLOCK:
+    return true;
+
   case SIMCALL_MUTEX_LOCK: {
     smx_mutex_t mutex = simcall_mutex_lock__get__mutex(req);
-#ifdef HAVE_MC
+#if HAVE_MC
     s_smx_mutex_t temp_mutex;
-    if (!MC_process_is_self(&mc_model_checker->process())) {
-      MC_process_read(&mc_model_checker->process(), MC_ADDRESS_SPACE_READ_FLAGS_NONE,
-        &temp_mutex, mutex, sizeof(temp_mutex),
-        MC_PROCESS_INDEX_ANY);
+    if (mc_mode == MC_MODE_SERVER) {
+      mc_model_checker->process().read(&temp_mutex, remote(mutex));
       mutex = &temp_mutex;
     }
 #endif
-    if(mutex->owner == NULL)
-      return TRUE;
+    if(mutex->owner == nullptr)
+      return true;
     else
-#ifdef HAVE_MC
+#if HAVE_MC
       // TODO, *(mutex->owner) :/
       return MC_smx_resolve_process(mutex->owner)->pid ==
         MC_smx_resolve_process(req->issuer)->pid;
@@ -150,11 +168,11 @@ int MC_request_is_enabled(smx_simcall_t req)
 
   default:
     /* The rest of the requests are always enabled */
-    return TRUE;
+    return true;
   }
 }
 
-int MC_request_is_visible(smx_simcall_t req)
+bool request_is_visible(smx_simcall_t req)
 {
   return req->call == SIMCALL_COMM_ISEND
       || req->call == SIMCALL_COMM_IRECV
@@ -164,17 +182,11 @@ int MC_request_is_visible(smx_simcall_t req)
       || req->call == SIMCALL_COMM_TESTANY
       || req->call == SIMCALL_MC_RANDOM
       || req->call == SIMCALL_MUTEX_LOCK
-#ifdef HAVE_MC
-      || req->call == SIMCALL_MC_SNAPSHOT
-      || req->call == SIMCALL_MC_COMPARE_SNAPSHOTS
-#endif
+      || req->call == SIMCALL_MUTEX_TRYLOCK
       ;
 }
 
-int MC_random(int min, int max)
-{
-  /*FIXME: return mc_current_state->executed_transition->random.value; */
-  return simcall_mc_random(min, max);
+}
 }
 
 static int prng_random(int min, int max)
@@ -187,7 +199,7 @@ static int prng_random(int min, int max)
   // Use rejection in order to avoid skew
   unsigned long x;
   do {
-#ifndef _XBT_WIN32
+#ifndef _WIN32
     x = (unsigned long) random();
 #else
     x = (unsigned long) rand();
@@ -198,35 +210,34 @@ static int prng_random(int min, int max)
 
 int simcall_HANDLER_mc_random(smx_simcall_t simcall, int min, int max)
 {
-  if (!MC_is_active() && !MC_record_path){
+  if (!MC_is_active() && !MC_record_path)
     return prng_random(min, max);
-  }
-
   return simcall->mc_value;
 }
 
-void MC_simcall_handle(smx_simcall_t req, int value)
+namespace simgrid {
+namespace mc {
+
+void handle_simcall(smx_simcall_t req, int value)
 {
-#ifndef HAVE_MC
+#if !HAVE_MC
   SIMIX_simcall_handle(req, value);
 #else
-  if (MC_process_is_self(&mc_model_checker->process())) {
+  if (mc_mode == MC_MODE_CLIENT) {
     SIMIX_simcall_handle(req, value);
     return;
   }
 
-  unsigned i;
-  mc_smx_process_info_t pi = NULL;
-
-  xbt_dynar_foreach_ptr(mc_model_checker->process().smx_process_infos, i, pi) {
-    if (req == &pi->copy.simcall) {
-      MC_server_simcall_handle(&mc_model_checker->process(), pi->copy.pid, value);
+  for (auto& pi : mc_model_checker->process().smx_process_infos)
+    if (req == &pi.copy.simcall) {
+      mc_model_checker->simcall_handle(
+        mc_model_checker->process(), pi.copy.pid, value);
       return;
     }
-  }
 
   xbt_die("Could not find the request");
 #endif
 }
 
 }
+}