X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/def75190166f07cc72917cb15535b660aa976e7f..7ab0c3292a34fe46da96475255faeadb956b4409:/src/mc/mc_base.cpp diff --git a/src/mc/mc_base.cpp b/src/mc/mc_base.cpp index 7c350f7e7f..681efc334e 100644 --- a/src/mc/mc_base.cpp +++ b/src/mc/mc_base.cpp @@ -1,52 +1,29 @@ -/* Copyright (c) 2008-2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2008-2017. 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. */ -#include - #include -#include -#include -#include - -#include - +#include "mc/mc.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" - -#include "src/simix/Synchro.h" -#include "src/simix/SynchroIo.hpp" -#include "src/simix/SynchroComm.hpp" -#include "src/simix/SynchroRaw.hpp" -#include "src/simix/SynchroSleep.hpp" -#include "src/simix/SynchroExec.hpp" - -#if HAVE_MC -#include "src/mc/mc_request.h" -#include "src/mc/Process.hpp" +#include "src/simix/smx_private.h" + +#if SIMGRID_HAVE_MC #include "src/mc/ModelChecker.hpp" -#include "src/mc/mc_smx.h" -#endif -#if HAVE_MC using simgrid::mc::remote; #endif -XBT_LOG_NEW_CATEGORY(mc, "All MC categories"); +XBT_LOG_NEW_DEFAULT_CATEGORY(mc, "All MC categories"); int MC_random(int min, int max) { -#if HAVE_MC +#if SIMGRID_HAVE_MC xbt_assert(mc_model_checker == nullptr); - /* TODO, if the MC is disabled we do not really need to make a simcall for - * this :) */ #endif + /* TODO, if the MC is disabled we do not really need to make a simcall for this :) */ return simcall_mc_random(min, max); } @@ -55,11 +32,11 @@ namespace mc { void wait_for_requests(void) { -#if HAVE_MC +#if SIMGRID_HAVE_MC xbt_assert(mc_model_checker == nullptr); #endif - smx_process_t process; + smx_actor_t process; smx_simcall_t req; unsigned int iter; @@ -71,8 +48,24 @@ void wait_for_requests(void) SIMIX_simcall_handle(req, 0); } } +#if SIMGRID_HAVE_MC + xbt_dynar_reset(simix_global->actors_vector); + for (std::pair kv : simix_global->process_list) { + xbt_dynar_push_as(simix_global->actors_vector, smx_actor_t, kv.second); + } +#endif } +/** @brief returns if there this transition can proceed in a finite amount of time + * + * It is used in the model-checker to not get into self-deadlock where it would execute a never ending transition. + * + * Only WAIT operations (on comm, on mutex, etc) can ever return false because they could lock the MC exploration. + * Wait operations are OK and return true in only two situations: + * - if the wait will succeed immediately (if both peer of the comm are there already or if the mutex is available) + * - if a timeout is provided, because we can fire the timeout if the transition is not ready without blocking in this transition for ever. + * + */ // Called from both MCer and MCed: bool request_is_enabled(smx_simcall_t req) { @@ -86,15 +79,16 @@ bool request_is_enabled(smx_simcall_t req) case SIMCALL_COMM_WAIT: { /* FIXME: check also that src and dst processes are not suspended */ - simgrid::simix::Comm *act = static_cast(simcall_comm_wait__get__comm(req)); + simgrid::kernel::activity::Comm *act = + static_cast(simcall_comm_wait__get__comm(req)); -#if HAVE_MC +#if SIMGRID_HAVE_MC // Fetch from MCed memory: // HACK, type puning - simgrid::mc::Remote temp_comm; if (mc_model_checker != nullptr) { + simgrid::mc::Remote temp_comm; mc_model_checker->process().read(temp_comm, remote(act)); - act = static_cast(temp_comm.getBuffer()); + act = static_cast(temp_comm.getBuffer()); } #endif @@ -113,9 +107,10 @@ bool request_is_enabled(smx_simcall_t req) case SIMCALL_COMM_WAITANY: { xbt_dynar_t comms; - simgrid::simix::Comm *act = static_cast(simcall_comm_wait__get__comm(req)); -#if HAVE_MC + simgrid::kernel::activity::Comm *act = + static_cast(simcall_comm_wait__get__comm(req)); +#if SIMGRID_HAVE_MC s_xbt_dynar_t comms_buffer; size_t buffer_size = 0; if (mc_model_checker != nullptr) { @@ -138,30 +133,27 @@ bool request_is_enabled(smx_simcall_t req) #endif for (index = 0; index < comms->used; ++index) { -#if HAVE_MC +#if SIMGRID_HAVE_MC // Fetch act from MCed memory: // HACK, type puning - simgrid::mc::Remote temp_comm; + simgrid::mc::Remote temp_comm; if (mc_model_checker != nullptr) { memcpy(&act, buffer + comms->elmsize * index, sizeof(act)); mc_model_checker->process().read(temp_comm, remote(act)); - act = static_cast(temp_comm.getBuffer()); + act = static_cast(temp_comm.getBuffer()); } else #endif - act = xbt_dynar_get_as(comms, index, simgrid::simix::Comm*); + act = xbt_dynar_get_as(comms, index, simgrid::kernel::activity::Comm*); if (act->src_proc && act->dst_proc) return true; } return false; } - case SIMCALL_MUTEX_TRYLOCK: - return true; - case SIMCALL_MUTEX_LOCK: { smx_mutex_t mutex = simcall_mutex_lock__get__mutex(req); -#if HAVE_MC +#if SIMGRID_HAVE_MC simgrid::mc::Remote temp_mutex; if (mc_model_checker != nullptr) { mc_model_checker->process().read(temp_mutex.getBuffer(), remote(mutex)); @@ -171,21 +163,37 @@ bool request_is_enabled(smx_simcall_t req) if(mutex->owner == nullptr) return true; -#if HAVE_MC +#if SIMGRID_HAVE_MC else if (mc_model_checker != nullptr) { simgrid::mc::Process& modelchecked = mc_model_checker->process(); // TODO, *(mutex->owner) :/ - return modelchecked.resolveProcess(simgrid::mc::remote(mutex->owner))->pid - == modelchecked.resolveProcess(simgrid::mc::remote(req->issuer))->pid; + return modelchecked.resolveActor(simgrid::mc::remote(mutex->owner))->pid == + modelchecked.resolveActor(simgrid::mc::remote(req->issuer))->pid; } #endif else return mutex->owner->pid == req->issuer->pid; } - default: - /* The rest of the requests are always enabled */ - return true; + case SIMCALL_SEM_ACQUIRE: { + static int warned = 0; + if (!warned) + XBT_INFO("Using semaphore in model-checked code is still experimental. Use at your own risk"); + warned = 1; + return true; + } + + case SIMCALL_COND_WAIT: { + static int warned = 0; + if (!warned) + XBT_INFO("Using condition variables in model-checked code is still experimental. Use at your own risk"); + warned = 1; + return true; + } + + default: + /* The rest of the requests are always enabled */ + return true; } }