X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/0e4aeb6a5d4165c8ba038514f09da26751a93538..1fcf838d99683d6752a603216d5d3640274e866b:/src/msg/msg_vm.cpp diff --git a/src/msg/msg_vm.cpp b/src/msg/msg_vm.cpp index 479da6da4a..15f68ac611 100644 --- a/src/msg/msg_vm.cpp +++ b/src/msg/msg_vm.cpp @@ -18,19 +18,19 @@ #include "simgrid/host.h" #include "simgrid/simix.hpp" +#include "xbt/string.hpp" extern "C" { struct s_dirty_page { - double prev_clock; - double prev_remaining; - msg_task_t task; + double prev_clock = 0.0; + double prev_remaining = 0.0; + msg_task_t task = nullptr; }; typedef s_dirty_page* dirty_page_t; XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_vm, msg, "Cloud-oriented parts of the MSG API"); -/* **** ******** GENERAL ********* **** */ const char* MSG_vm_get_name(msg_vm_t vm) { return vm->getCname(); @@ -58,10 +58,19 @@ void MSG_vm_get_params(msg_vm_t vm, vm_params_t params) vm->getParameters(params); } +void MSG_vm_set_ramsize(msg_vm_t vm, size_t size) +{ + vm->setRamsize(size); +} +size_t MSG_vm_get_ramsize(msg_vm_t vm) +{ + return vm->getRamsize(); +} + /* **** Check state of a VM **** */ static inline int __MSG_vm_is_state(msg_vm_t vm, e_surf_vm_state_t state) { - return vm->pimpl_vm_ != nullptr && vm->pimpl_vm_->getState() == state; + return vm->pimpl_vm_ != nullptr && vm->getState() == state; } /** @brief Returns whether the given VM has just created, not running. @@ -112,16 +121,12 @@ msg_vm_t MSG_vm_create(msg_host_t pm, const char* name, int coreAmount, int rams /* For the moment, intensity_rate is the percentage against the migration bandwidth */ - msg_vm_t vm = new simgrid::s4u::VirtualMachine(name, pm, coreAmount); + msg_vm_t vm = new simgrid::s4u::VirtualMachine(name, pm, coreAmount, static_cast(ramsize) * 1024 * 1024); s_vm_params_t params; - memset(¶ms, 0, sizeof(params)); - params.ramsize = static_cast(ramsize) * 1024 * 1024; - params.devsize = 0; - params.skip_stage2 = 0; params.max_downtime = 0.03; - params.mig_speed = static_cast(mig_netspeed) * 1024 * 1024; // mig_speed + params.mig_speed = static_cast(mig_netspeed) * 1024 * 1024; // mig_speed params.dp_intensity = static_cast(dp_intensity) / 100; - params.dp_cap = params.ramsize * 0.9; // assume working set memory is 90% of ramsize + params.dp_cap = vm->getRamsize() * 0.9; // assume working set memory is 90% of ramsize XBT_DEBUG("migspeed : %f intensity mem : %d", params.mig_speed, dp_intensity); vm->setParameters(¶ms); @@ -139,7 +144,11 @@ msg_vm_t MSG_vm_create_core(msg_host_t pm, const char* name) xbt_assert(sg_host_by_name(name) == nullptr, "Cannot create a VM named %s: this name is already used by an host or a VM", name); - return new simgrid::s4u::VirtualMachine(name, pm, 1); + msg_vm_t vm = new simgrid::s4u::VirtualMachine(name, pm, 1); + s_vm_params_t params; + memset(¶ms, 0, sizeof(params)); + vm->setParameters(¶ms); + return vm; } /** @brief Create a new VM object with the default parameters, but with a specified amount of cores * @ingroup msg_VMs* @@ -151,7 +160,11 @@ msg_vm_t MSG_vm_create_multicore(msg_host_t pm, const char* name, int coreAmount xbt_assert(sg_host_by_name(name) == nullptr, "Cannot create a VM named %s: this name is already used by an host or a VM", name); - return new simgrid::s4u::VirtualMachine(name, pm, coreAmount); + msg_vm_t vm = new simgrid::s4u::VirtualMachine(name, pm, coreAmount); + s_vm_params_t params; + memset(¶ms, 0, sizeof(params)); + vm->setParameters(¶ms); + return vm; } /** @brief Destroy a VM. Destroy the VM object from the simulation. @@ -167,7 +180,7 @@ void MSG_vm_destroy(msg_vm_t vm) MSG_vm_shutdown(vm); /* Then, destroy the VM object */ - simgrid::simix::kernelImmediate([vm]() { vm->destroy(); }); + vm->destroy(); if (TRACE_msg_vm_is_enabled()) { container_t container = simgrid::instr::Container::byName(vm->getName()); @@ -230,9 +243,9 @@ struct migration_session { /* The miration_rx process uses mbox_ctl to let the caller of do_migration() * know the completion of the migration. */ - char *mbox_ctl; + std::string mbox_ctl; /* The migration_rx and migration_tx processes use mbox to transfer migration data. */ - char *mbox; + std::string mbox; }; static int migration_rx_fun(int argc, char *argv[]) @@ -247,7 +260,7 @@ static int migration_rx_fun(int argc, char *argv[]) std::string finalize_task_name = get_mig_task_name(ms->vm, ms->src_pm, ms->dst_pm, 3); while (not received_finalize) { msg_task_t task = nullptr; - int ret = MSG_task_recv(&task, ms->mbox); + int ret = MSG_task_recv(&task, ms->mbox.c_str()); if (ret != MSG_OK) { // An error occurred, clean the code and return @@ -274,11 +287,11 @@ static int migration_rx_fun(int argc, char *argv[]) simgrid::simix::kernelImmediate([vm, dst_pm]() { /* Update the vm location */ /* precopy migration makes the VM temporally paused */ - xbt_assert(vm->pimpl_vm_->getState() == SURF_VM_STATE_SUSPENDED); + xbt_assert(vm->getState() == SURF_VM_STATE_SUSPENDED); /* Update the vm location and resume it */ vm->pimpl_vm_->setPm(dst_pm); - vm->pimpl_vm_->resume(); + vm->resume(); }); @@ -292,9 +305,8 @@ static int migration_rx_fun(int argc, char *argv[]) counter++; // start link - container_t msg = simgrid::instr::Container::byName(vm->getName()); - simgrid::instr::LinkType* link = simgrid::instr::Container::getRootContainer()->getLink("MSG_VM_LINK"); - link->startEvent(simgrid::instr::Container::getRootContainer(), msg, "M", key); + container_t msg = simgrid::instr::Container::byName(vm->getName()); + simgrid::instr::Container::getRoot()->getLink("MSG_VM_LINK")->startEvent(msg, "M", key); // destroy existing container of this vm container_t existing_container = simgrid::instr::Container::byName(vm->getName()); @@ -306,13 +318,13 @@ static int migration_rx_fun(int argc, char *argv[]) // end link msg = simgrid::instr::Container::byName(vm->getName()); - link->endEvent(simgrid::instr::Container::getRootContainer(), msg, "M", key); + simgrid::instr::Container::getRoot()->getLink("MSG_VM_LINK")->endEvent(msg, "M", key); } // Inform the SRC that the migration has been correctly performed std::string task_name = get_mig_task_name(ms->vm, ms->src_pm, ms->dst_pm, 4); msg_task_t task = MSG_task_create(task_name.c_str(), 0, 0, nullptr); - msg_error_t ret = MSG_task_send(task, ms->mbox_ctl); + msg_error_t ret = MSG_task_send(task, ms->mbox_ctl.c_str()); if(ret == MSG_HOST_FAILURE){ // The DST has crashed, this is a problem has the VM since we are not sure whether SRC is considering that the VM // has been correctly migrated on the DST node @@ -329,13 +341,13 @@ static int migration_rx_fun(int argc, char *argv[]) static void start_dirty_page_tracking(msg_vm_t vm) { - vm->pimpl_vm_->dp_enabled = 1; + vm->pimpl_vm_->dp_enabled = true; if (vm->pimpl_vm_->dp_objs.empty()) return; for (auto const& elm : vm->pimpl_vm_->dp_objs) { dirty_page_t dp = elm.second; - double remaining = MSG_task_get_flops_amount(dp->task); + double remaining = MSG_task_get_remaining_work_ratio(dp->task); dp->prev_clock = MSG_get_clock(); dp->prev_remaining = remaining; XBT_DEBUG("%s@%s remaining %f", elm.first.c_str(), vm->getCname(), remaining); @@ -344,15 +356,15 @@ static void start_dirty_page_tracking(msg_vm_t vm) static void stop_dirty_page_tracking(msg_vm_t vm) { - vm->pimpl_vm_->dp_enabled = 0; + vm->pimpl_vm_->dp_enabled = false; } -static double get_computed(const char* key, msg_vm_t vm, dirty_page_t dp, double remaining, double clock) +static double get_computed(const std::string& key, msg_vm_t vm, dirty_page_t dp, double remaining, double clock) { double computed = dp->prev_remaining - remaining; double duration = clock - dp->prev_clock; - XBT_DEBUG("%s@%s: computed %f ops (remaining %f -> %f) in %f secs (%f -> %f)", key, vm->getCname(), computed, + XBT_DEBUG("%s@%s: computed %f ops (remaining %f -> %f) in %f secs (%f -> %f)", key.c_str(), vm->getCname(), computed, dp->prev_remaining, remaining, duration, dp->prev_clock, clock); return computed; @@ -363,9 +375,9 @@ static double lookup_computed_flop_counts(msg_vm_t vm, int stage_for_fancy_debug double total = 0; for (auto const& elm : vm->pimpl_vm_->dp_objs) { - const char* key = elm.first.c_str(); + const std::string& key = elm.first; dirty_page_t dp = elm.second; - double remaining = MSG_task_get_flops_amount(dp->task); + double remaining = MSG_task_get_remaining_work_ratio(dp->task); double clock = MSG_get_clock(); @@ -394,19 +406,18 @@ void MSG_host_add_task(msg_host_t host, msg_task_t task) if (vm == nullptr) return; - double remaining = MSG_task_get_flops_amount(task); - char *key = bprintf("%s-%p", task->name, task); + double remaining = MSG_task_get_initial_flops_amount(task); + std::string key = simgrid::xbt::string_printf("%s-%p", task->name, task); - dirty_page_t dp = xbt_new0(s_dirty_page, 1); + dirty_page_t dp = new s_dirty_page; dp->task = task; if (vm->pimpl_vm_->dp_enabled) { dp->prev_clock = MSG_get_clock(); dp->prev_remaining = remaining; } vm->pimpl_vm_->dp_objs.insert({key, dp}); - XBT_DEBUG("add %s on %s (remaining %f, dp_enabled %d)", key, host->getCname(), remaining, vm->pimpl_vm_->dp_enabled); - - xbt_free(key); + XBT_DEBUG("add %s on %s (remaining %f, dp_enabled %d)", key.c_str(), host->getCname(), remaining, + vm->pimpl_vm_->dp_enabled); } void MSG_host_del_task(msg_host_t host, msg_task_t task) @@ -415,16 +426,17 @@ void MSG_host_del_task(msg_host_t host, msg_task_t task) if (vm == nullptr) return; - char *key = bprintf("%s-%p", task->name, task); + std::string key = simgrid::xbt::string_printf("%s-%p", task->name, task); dirty_page_t dp = nullptr; - if (vm->pimpl_vm_->dp_objs.find(key) != vm->pimpl_vm_->dp_objs.end()) - dp = vm->pimpl_vm_->dp_objs.at(key); + auto dp_obj = vm->pimpl_vm_->dp_objs.find(key); + if (dp_obj != vm->pimpl_vm_->dp_objs.end()) + dp = dp_obj->second; xbt_assert(dp && dp->task == task); /* If we are in the middle of dirty page tracking, we record how much computation has been done until now, and keep * the information for the lookup_() function that will called soon. */ if (vm->pimpl_vm_->dp_enabled) { - double remaining = MSG_task_get_flops_amount(task); + double remaining = MSG_task_get_remaining_work_ratio(task); double clock = MSG_get_clock(); double updated = get_computed(key, vm, dp, remaining, clock); // was host instead of vm @@ -432,14 +444,14 @@ void MSG_host_del_task(msg_host_t host, msg_task_t task) } vm->pimpl_vm_->dp_objs.erase(key); - xbt_free(dp); + delete dp; - XBT_DEBUG("del %s on %s", key, host->getCname()); - xbt_free(key); + XBT_DEBUG("del %s on %s", key.c_str(), host->getCname()); } -static sg_size_t send_migration_data(msg_vm_t vm, msg_host_t src_pm, msg_host_t dst_pm, sg_size_t size, char* mbox, - int stage, int stage2_round, double mig_speed, double timeout) +static sg_size_t send_migration_data(msg_vm_t vm, msg_host_t src_pm, msg_host_t dst_pm, sg_size_t size, + const std::string& mbox, int stage, int stage2_round, double mig_speed, + double timeout) { sg_size_t sent = 0; std::string task_name = get_mig_task_name(vm, src_pm, dst_pm, stage); @@ -449,9 +461,9 @@ static sg_size_t send_migration_data(msg_vm_t vm, msg_host_t src_pm, msg_host_t msg_error_t ret; if (mig_speed > 0) - ret = MSG_task_send_with_timeout_bounded(task, mbox, timeout, mig_speed); + ret = MSG_task_send_with_timeout_bounded(task, mbox.c_str(), timeout, mig_speed); else - ret = MSG_task_send(task, mbox); + ret = MSG_task_send(task, mbox.c_str()); if (ret == MSG_OK) { sent = size; @@ -504,22 +516,20 @@ static int migration_tx_fun(int argc, char *argv[]) // Note that the ms structure has been allocated in do_migration and hence should be freed in the same function ;) migration_session* ms = static_cast(MSG_process_get_data(MSG_process_self())); - double host_speed = ms->vm->pimpl_vm_->getPm()->getSpeed(); + double host_speed = ms->vm->getPm()->getSpeed(); s_vm_params_t params; ms->vm->getParameters(¶ms); - const sg_size_t ramsize = params.ramsize; - const sg_size_t devsize = params.devsize; - const int skip_stage1 = params.skip_stage1; - int skip_stage2 = params.skip_stage2; + const sg_size_t ramsize = ms->vm->getRamsize(); const double dp_rate = host_speed ? (params.mig_speed * params.dp_intensity) / host_speed : 1; const double dp_cap = params.dp_cap; const double mig_speed = params.mig_speed; double max_downtime = params.max_downtime; double mig_timeout = 10000000.0; + bool skip_stage2 = false; - double remaining_size = static_cast(ramsize + devsize); - double threshold = 0.0; + size_t remaining_size = ramsize; + size_t threshold = 0.0; /* check parameters */ if (ramsize == 0) @@ -531,48 +541,44 @@ static int migration_tx_fun(int argc, char *argv[]) } /* Stage1: send all memory pages to the destination. */ - XBT_DEBUG("mig-stage1: remaining_size %f", remaining_size); + XBT_DEBUG("mig-stage1: remaining_size %zu", remaining_size); start_dirty_page_tracking(ms->vm); double computed_during_stage1 = 0; - if (not skip_stage1) { - double clock_prev_send = MSG_get_clock(); - - try { - /* At stage 1, we do not need timeout. We have to send all the memory pages even though the duration of this - * transfer exceeds the timeout value. */ - XBT_VERB("Stage 1: Gonna send %llu bytes", ramsize); - sg_size_t sent = send_migration_data(ms->vm, ms->src_pm, ms->dst_pm, ramsize, ms->mbox, 1, 0, mig_speed, -1); - remaining_size -= sent; - computed_during_stage1 = lookup_computed_flop_counts(ms->vm, 1, 0); - - if (sent < ramsize) { - XBT_VERB("mig-stage1: timeout, force moving to stage 3"); - skip_stage2 = 1; - } else if (sent > ramsize) - XBT_CRITICAL("bug"); - - } - catch (xbt_ex& e) { - //hostfailure (if you want to know whether this is the SRC or the DST check directly in send_migration_data code) - // Stop the dirty page tracking an return (there is no memory space to release) - stop_dirty_page_tracking(ms->vm); - return 0; - } + double clock_prev_send = MSG_get_clock(); - double clock_post_send = MSG_get_clock(); - mig_timeout -= (clock_post_send - clock_prev_send); - if (mig_timeout < 0) { - XBT_VERB("The duration of stage 1 exceeds the timeout value, skip stage 2"); - skip_stage2 = 1; - } + try { + /* At stage 1, we do not need timeout. We have to send all the memory pages even though the duration of this + * transfer exceeds the timeout value. */ + XBT_VERB("Stage 1: Gonna send %llu bytes", ramsize); + sg_size_t sent = send_migration_data(ms->vm, ms->src_pm, ms->dst_pm, ramsize, ms->mbox, 1, 0, mig_speed, -1); + remaining_size -= sent; + computed_during_stage1 = lookup_computed_flop_counts(ms->vm, 1, 0); + + if (sent < ramsize) { + XBT_VERB("mig-stage1: timeout, force moving to stage 3"); + skip_stage2 = true; + } else if (sent > ramsize) + XBT_CRITICAL("bug"); + + } catch (xbt_ex& e) { + // hostfailure (if you want to know whether this is the SRC or the DST check directly in send_migration_data code) + // Stop the dirty page tracking an return (there is no memory space to release) + stop_dirty_page_tracking(ms->vm); + return 0; + } - /* estimate bandwidth */ - double bandwidth = ramsize / (clock_post_send - clock_prev_send); - threshold = bandwidth * max_downtime; - XBT_DEBUG("actual bandwidth %f (MB/s), threshold %f", bandwidth / 1024 / 1024, threshold); + double clock_post_send = MSG_get_clock(); + mig_timeout -= (clock_post_send - clock_prev_send); + if (mig_timeout < 0) { + XBT_VERB("The duration of stage 1 exceeds the timeout value, skip stage 2"); + skip_stage2 = true; } + /* estimate bandwidth */ + double bandwidth = ramsize / (clock_post_send - clock_prev_send); + threshold = bandwidth * max_downtime; + XBT_DEBUG("actual bandwidth %f (MB/s), threshold %zu", bandwidth / 1024 / 1024, threshold); /* Stage2: send update pages iteratively until the size of remaining states becomes smaller than threshold value. */ if (not skip_stage2) { @@ -594,7 +600,7 @@ static int migration_tx_fun(int argc, char *argv[]) /* Check whether the remaining size is below the threshold value. If so, move to stage 3. */ remaining_size += updated_size; - XBT_DEBUG("mig-stage2.%d: remaining_size %f (%s threshold %f)", stage2_round, remaining_size, + XBT_DEBUG("mig-stage2.%d: remaining_size %zu (%s threshold %zu)", stage2_round, remaining_size, (remaining_size < threshold) ? "<" : ">", threshold); if (remaining_size < threshold) break; @@ -618,7 +624,7 @@ static int migration_tx_fun(int argc, char *argv[]) /* timeout did not happen */ double bandwidth = updated_size / (clock_post_send - clock_prev_send); threshold = bandwidth * max_downtime; - XBT_DEBUG("actual bandwidth %f, threshold %f", bandwidth / 1024 / 1024, threshold); + XBT_DEBUG("actual bandwidth %f, threshold %zu", bandwidth / 1024 / 1024, threshold); remaining_size -= sent; stage2_round += 1; mig_timeout -= (clock_post_send - clock_prev_send); @@ -641,7 +647,7 @@ static int migration_tx_fun(int argc, char *argv[]) } /* Stage3: stop the VM and copy the rest of states. */ - XBT_DEBUG("mig-stage3: remaining_size %f", remaining_size); + XBT_DEBUG("mig-stage3: remaining_size %zu", remaining_size); simgrid::vm::VirtualMachineImpl* pimpl = ms->vm->pimpl_vm_; pimpl->setState(SURF_VM_STATE_RUNNING); // FIXME: this bypass of the checks in suspend() is not nice pimpl->isMigrating = false; // FIXME: this bypass of the checks in suspend() is not nice @@ -649,14 +655,13 @@ static int migration_tx_fun(int argc, char *argv[]) stop_dirty_page_tracking(ms->vm); try { - XBT_DEBUG("Stage 3: Gonna send %f bytes", remaining_size); - send_migration_data(ms->vm, ms->src_pm, ms->dst_pm, static_cast(remaining_size), ms->mbox, 3, 0, - mig_speed, -1); + XBT_DEBUG("Stage 3: Gonna send %zu bytes", remaining_size); + send_migration_data(ms->vm, ms->src_pm, ms->dst_pm, remaining_size, ms->mbox, 3, 0, mig_speed, -1); } catch(xbt_ex& e) { //hostfailure (if you want to know whether this is the SRC or the DST check directly in send_migration_data code) // Stop the dirty page tracking an return (there is no memory space to release) - ms->vm->pimpl_vm_->resume(); + ms->vm->resume(); return 0; } @@ -688,7 +693,7 @@ void MSG_vm_migrate(msg_vm_t vm, msg_host_t dst_pm) * The second one would be easier. */ - msg_host_t src_pm = vm->pimpl_vm_->getPm(); + msg_host_t src_pm = vm->getPm(); if (src_pm->isOff()) THROWF(vm_error, 0, "Cannot migrate VM '%s' from host '%s', which is offline.", vm->getCname(), src_pm->getCname()); @@ -701,34 +706,32 @@ void MSG_vm_migrate(msg_vm_t vm, msg_host_t dst_pm) vm->pimpl_vm_->isMigrating = true; - migration_session* ms = xbt_new(migration_session, 1); - ms->vm = vm; - ms->src_pm = src_pm; - ms->dst_pm = dst_pm; + migration_session ms; + ms.vm = vm; + ms.src_pm = src_pm; + ms.dst_pm = dst_pm; /* We have two mailboxes. mbox is used to transfer migration data between source and destination PMs. mbox_ctl is used * to detect the completion of a migration. The names of these mailboxes must not conflict with others. */ - ms->mbox_ctl = bprintf("__mbox_mig_ctl:%s(%s-%s)", vm->getCname(), src_pm->getCname(), dst_pm->getCname()); - ms->mbox = bprintf("__mbox_mig_src_dst:%s(%s-%s)", vm->getCname(), src_pm->getCname(), dst_pm->getCname()); + ms.mbox_ctl = + simgrid::xbt::string_printf("__mbox_mig_ctl:%s(%s-%s)", vm->getCname(), src_pm->getCname(), dst_pm->getCname()); + ms.mbox = simgrid::xbt::string_printf("__mbox_mig_src_dst:%s(%s-%s)", vm->getCname(), src_pm->getCname(), + dst_pm->getCname()); std::string pr_rx_name = get_mig_process_rx_name(vm, src_pm, dst_pm); std::string pr_tx_name = get_mig_process_tx_name(vm, src_pm, dst_pm); - MSG_process_create(pr_rx_name.c_str(), migration_rx_fun, ms, dst_pm); + MSG_process_create(pr_rx_name.c_str(), migration_rx_fun, &ms, dst_pm); - MSG_process_create(pr_tx_name.c_str(), migration_tx_fun, ms, src_pm); + MSG_process_create(pr_tx_name.c_str(), migration_tx_fun, &ms, src_pm); /* wait until the migration have finished or on error has occurred */ XBT_DEBUG("wait for reception of the final ACK (i.e. migration has been correctly performed"); msg_task_t task = nullptr; - msg_error_t ret = MSG_task_receive(&task, ms->mbox_ctl); + msg_error_t ret = MSG_task_receive(&task, ms.mbox_ctl.c_str()); vm->pimpl_vm_->isMigrating = false; - xbt_free(ms->mbox_ctl); - xbt_free(ms->mbox); - xbt_free(ms); - if (ret == MSG_HOST_FAILURE) { // Note that since the communication failed, the owner did not change and the task should be destroyed on the // other side. Hence, just throw the execption @@ -758,11 +761,7 @@ void MSG_vm_migrate(msg_vm_t vm, msg_host_t dst_pm) */ void MSG_vm_suspend(msg_vm_t vm) { - smx_actor_t issuer = SIMIX_process_self(); - simgrid::simix::kernelImmediate([vm, issuer]() { vm->pimpl_vm_->suspend(issuer); }); - - XBT_DEBUG("vm_suspend done"); - + vm->suspend(); if (TRACE_msg_vm_is_enabled()) { simgrid::instr::StateType* state = simgrid::instr::Container::byName(vm->getName())->getState("MSG_VM_STATE"); state->addEntityValue("suspend", "1 0 0"); // suspend is red @@ -777,8 +776,7 @@ void MSG_vm_suspend(msg_vm_t vm) */ void MSG_vm_resume(msg_vm_t vm) { - vm->pimpl_vm_->resume(); - + vm->resume(); if (TRACE_msg_vm_is_enabled()) simgrid::instr::Container::byName(vm->getName())->getState("MSG_VM_STATE")->popEvent(); }