X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/bc48db087894fd960073b3120cebf90e6b2f8c02..b0d07f67c6153ee2689bc22486c95becf4286493:/src/mc/mc_smx.cpp diff --git a/src/mc/mc_smx.cpp b/src/mc/mc_smx.cpp index ef15f63ef5..e57e6bd7a8 100644 --- a/src/mc/mc_smx.cpp +++ b/src/mc/mc_smx.cpp @@ -1,230 +1,157 @@ -/* Copyright (c) 2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2015-2019. 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 "simgrid/s4u/Host.hpp" -#include -#include -#include -#include - -#include "src/simix/smx_private.h" - -#include "src/mc/mc_smx.h" #include "src/mc/ModelChecker.hpp" +#include "src/mc/mc_smx.hpp" using simgrid::mc::remote; -extern "C" { - -static inline -bool is_in_vector(smx_process_t p, std::vector& ps) +/** HACK, Statically "upcast" a s_smx_actor_t into a ActorInformation + * + * This gets 'actorInfo' from '&actorInfo->copy'. It upcasts in the + * sense that we could achieve the same thing by having ActorInformation + * inherit from s_smx_actor_t but we don't really want to do that. + */ +static inline simgrid::mc::ActorInformation* actor_info_cast(smx_actor_t actor) { - return (uintptr_t) p >= (uintptr_t) &ps[0] - && (uintptr_t) p < (uintptr_t) &ps[ps.size()]; -} + simgrid::mc::ActorInformation temp; + std::size_t offset = (char*)temp.copy.get_buffer() - (char*)&temp; -static inline -simgrid::mc::SimixProcessInformation* MC_smx_process_get_info(smx_process_t p) -{ - assert(is_in_vector(p, mc_model_checker->process().smx_process_infos) - || is_in_vector(p, mc_model_checker->process().smx_old_process_infos)); - simgrid::mc::SimixProcessInformation* process_info = - (simgrid::mc::SimixProcessInformation*) - ((char*) p - offsetof(simgrid::mc::SimixProcessInformation, copy)); + simgrid::mc::ActorInformation* process_info = (simgrid::mc::ActorInformation*)((char*)actor - offset); return process_info; } -/** Load the remote swag of processes into a dynar +/** Load the remote list of processes into a vector * - * @param process MCed process - * @param target Local dynar (to be filled with copies of `s_smx_process_t`) - * @param remote_swag Address of the process SWAG in the remote list + * @param process MCed process + * @param target Local vector (to be filled with copies of `s_smx_actor_t`) + * @param remote_dynar Address of the process dynar in the remote list */ -static void MC_process_refresh_simix_process_list( - simgrid::mc::Process* process, - std::vector& target, xbt_swag_t remote_swag) +static void MC_process_refresh_simix_actor_dynar(simgrid::mc::RemoteClient* process, + std::vector& target, + simgrid::mc::RemotePtr remote_dynar) { target.clear(); - // swag = REMOTE(*simix_global->process_list) - s_xbt_swag_t swag; - process->read_bytes(&swag, sizeof(swag), remote(remote_swag)); + s_xbt_dynar_t dynar; + process->read_bytes(&dynar, sizeof(dynar), remote_dynar); - // Load each element of the dynar from the MCed process: - int i = 0; - for (smx_process_t p = (smx_process_t) swag.head; p; ++i) { + smx_actor_t* data = static_cast(::operator new(dynar.elmsize * dynar.used)); + process->read_bytes(data, dynar.elmsize * dynar.used, simgrid::mc::RemotePtr(dynar.data)); - simgrid::mc::SimixProcessInformation info; - info.address = p; + // Load each element of the vector from the MCed process: + for (unsigned int i = 0; i < dynar.used; ++i) { + + simgrid::mc::ActorInformation info; + info.address = simgrid::mc::RemotePtr(data[i]); info.hostname = nullptr; - process->read_bytes(&info.copy, sizeof(info.copy), remote(p)); + process->read_bytes(&info.copy, sizeof(info.copy), remote(data[i])); target.push_back(std::move(info)); - - // Lookup next process address: - p = (smx_process_t) xbt_swag_getNext(&info.copy, swag.offset); } - assert(i == swag.count); + ::operator delete(data); } +namespace simgrid { +namespace mc { -void MC_process_smx_refresh(simgrid::mc::Process* process) +void RemoteClient::refresh_simix() { - xbt_assert(mc_mode == MC_MODE_SERVER); - if (process->cache_flags & MC_PROCESS_CACHE_FLAG_SIMIX_PROCESSES) + if (this->cache_flags_ & RemoteClient::cache_simix_processes) return; // TODO, avoid to reload `&simix_global`, `simix_global`, `*simix_global` - // simix_global_p = REMOTE(simix_global); - smx_global_t simix_global_p; - process->read_variable("simix_global", &simix_global_p, sizeof(simix_global_p)); + static_assert(std::is_same< + std::unique_ptr, + decltype(simix_global) + >::value, "Unexpected type for simix_global"); + static_assert(sizeof(simix_global) == sizeof(simgrid::simix::Global*), + "Bad size for simix_global"); + + RemotePtr simix_global_p{this->read_variable("simix_global")}; // simix_global = REMOTE(*simix_global) - s_smx_global_t simix_global; - process->read_bytes(&simix_global, sizeof(simix_global), - remote(simix_global_p)); + Remote simix_global = + this->read(simix_global_p); - MC_process_refresh_simix_process_list( - process, process->smx_process_infos, simix_global.process_list); - MC_process_refresh_simix_process_list( - process, process->smx_old_process_infos, simix_global.process_to_destroy); + MC_process_refresh_simix_actor_dynar(this, this->smx_actors_infos, remote(simix_global.get_buffer()->actors_vector)); + MC_process_refresh_simix_actor_dynar(this, this->smx_dead_actors_infos, + remote(simix_global.get_buffer()->dead_actors_vector)); - process->cache_flags |= MC_PROCESS_CACHE_FLAG_SIMIX_PROCESSES; + this->cache_flags_ |= RemoteClient::cache_simix_processes; +} + +} } /** Get the issuer of a simcall (`req->issuer`) * * In split-process mode, it does the black magic necessary to get an address - * of a (shallow) copy of the data structure the issuer SIMIX process in the local + * of a (shallow) copy of the data structure the issuer SIMIX actor in the local * address space. * * @param process the MCed process * @param req the simcall (copied in the local process) */ -smx_process_t MC_smx_simcall_get_issuer(smx_simcall_t req) +smx_actor_t MC_smx_simcall_get_issuer(s_smx_simcall const* req) { - if (mc_mode == MC_MODE_CLIENT) - return req->issuer; - - MC_process_smx_refresh(&mc_model_checker->process()); + xbt_assert(mc_model_checker != nullptr); - // This is the address of the smx_process in the MCed process: - void* address = req->issuer; + // This is the address of the smx_actor in the MCed process: + auto address = simgrid::mc::remote(req->issuer_); // Lookup by address: - for (auto& p : mc_model_checker->process().smx_process_infos) - if (p.address == address) - return &p.copy; - for (auto& p : mc_model_checker->process().smx_old_process_infos) - if (p.address == address) - return &p.copy; + for (auto& actor : mc_model_checker->process().actors()) + if (actor.address == address) + return actor.copy.get_buffer(); + for (auto& actor : mc_model_checker->process().dead_actors()) + if (actor.address == address) + return actor.copy.get_buffer(); xbt_die("Issuer not found"); } -smx_process_t MC_smx_resolve_process(smx_process_t process_remote_address) +const char* MC_smx_actor_get_host_name(smx_actor_t actor) { - if (!process_remote_address) - return nullptr; - if (mc_mode == MC_MODE_CLIENT) - return process_remote_address; - - simgrid::mc::SimixProcessInformation* process_info = MC_smx_resolve_process_info(process_remote_address); - if (process_info) - return &process_info->copy; - else - return nullptr; -} - -simgrid::mc::SimixProcessInformation* MC_smx_resolve_process_info(smx_process_t process_remote_address) -{ - if (mc_mode == MC_MODE_CLIENT) - xbt_die("No process_info for local process is not enabled."); - for (auto& process_info : mc_model_checker->process().smx_process_infos) - if (process_info.address == process_remote_address) - return &process_info; - for (auto& process_info : mc_model_checker->process().smx_old_process_infos) - if (process_info.address == process_remote_address) - return &process_info; - xbt_die("Process info not found"); -} - -const char* MC_smx_process_get_host_name(smx_process_t p) -{ - if (mc_mode == MC_MODE_CLIENT) - return sg_host_get_name(p->host); - - simgrid::mc::Process* process = &mc_model_checker->process(); + if (mc_model_checker == nullptr) + return actor->get_host()->get_cname(); - /* Horrible hack to find the offset of the id in the simgrid::s4u::Host. - - Offsetof is not supported for non-POD types but this should - work in pratice for the targets currently supported by the MC - as long as we do not add funny features to the Host class - (such as virtual base). - - We are using a (C++11) unrestricted union in order to avoid - any construction/destruction of the simgrid::s4u::Host. - */ - union fake_host { - simgrid::s4u::Host host; - fake_host() {} - ~fake_host() {} - }; - fake_host foo; - const size_t offset = (char*) &foo.host.name() - (char*) &foo.host; + simgrid::mc::RemoteClient* process = &mc_model_checker->process(); // Read the simgrid::xbt::string in the MCed process: - simgrid::mc::SimixProcessInformation* info = MC_smx_process_get_info(p); - simgrid::xbt::string_data remote_string; - auto remote_string_address = remote( - (simgrid::xbt::string_data*) ((char*) p->host + offset)); - process->read_bytes(&remote_string, sizeof(remote_string), remote_string_address); + simgrid::mc::ActorInformation* info = actor_info_cast(actor); + auto remote_string_address = + remote(reinterpret_cast(&actor->get_host()->get_name())); + simgrid::xbt::string_data remote_string = process->read(remote_string_address); char hostname[remote_string.len]; process->read_bytes(hostname, remote_string.len + 1, remote(remote_string.data)); - info->hostname = mc_model_checker->get_host_name(hostname); + info->hostname = mc_model_checker->get_host_name(hostname).c_str(); return info->hostname; } -const char* MC_smx_process_get_name(smx_process_t p) +const char* MC_smx_actor_get_name(smx_actor_t actor) { - simgrid::mc::Process* process = &mc_model_checker->process(); - if (mc_mode == MC_MODE_CLIENT) - return p->name; - if (!p->name) - return nullptr; + simgrid::mc::RemoteClient* process = &mc_model_checker->process(); + if (mc_model_checker == nullptr) + return actor->get_cname(); - simgrid::mc::SimixProcessInformation* info = MC_smx_process_get_info(p); + simgrid::mc::ActorInformation* info = actor_info_cast(actor); if (info->name.empty()) { - char* name = process->read_string(p->name); - info->name = name; - free(name); + simgrid::xbt::string_data string_data = simgrid::xbt::string::to_string_data(actor->name_); + info->name = process->read_string(remote(string_data.data), string_data.len); } return info->name.c_str(); } -#if HAVE_SMPI -int MC_smpi_process_count(void) -{ - if (mc_mode == MC_MODE_CLIENT) - return smpi_process_count(); - int res; - mc_model_checker->process().read_variable("process_count", - &res, sizeof(res)); - return res; -} -#endif - -unsigned long MC_smx_get_maxpid(void) +unsigned long MC_smx_get_maxpid() { unsigned long maxpid; - mc_model_checker->process().read_variable("simix_process_maxpid", - &maxpid, sizeof(maxpid)); + const char* name = "simgrid::kernel::actor::maxpid"; + if (mc_model_checker->process().find_variable(name) == nullptr) + name = "maxpid"; // We seem to miss the namespaces when compiling with GCC + mc_model_checker->process().read_variable(name, &maxpid, sizeof(maxpid)); return maxpid; } - -}