X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/224e87cf30cd5397ab3172eca7034f3d9d50c427..18bee871381a6ce670d9da211f43ab9b55fdc350:/src/simix/smx_vm.cpp diff --git a/src/simix/smx_vm.cpp b/src/simix/smx_vm.cpp index 0eb77b56b6..5714078042 100644 --- a/src/simix/smx_vm.cpp +++ b/src/simix/smx_vm.cpp @@ -7,112 +7,11 @@ #include "simgrid/s4u/VirtualMachine.hpp" #include "smx_private.h" #include "src/plugins/vm/VirtualMachineImpl.hpp" +#include "src/plugins/vm/VmHostExt.hpp" #include "src/surf/HostImpl.hpp" XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_vm, simix, "Logging specific to SIMIX Virtual Machines"); -/* works for VMs and PMs */ -static long host_get_ramsize(sg_host_t vm, int *overcommit) -{ - s_vm_params_t params; - static_cast(vm)->parameters(¶ms); - - if (overcommit) - *overcommit = params.overcommit; - - return params.ramsize; -} - -/* **** start a VM **** */ -static int __can_be_started(sg_host_t vm) -{ - sg_host_t pm = static_cast(vm)->pimpl_vm_->getPm(); - - int pm_overcommit = 0; - long pm_ramsize = host_get_ramsize(pm, &pm_overcommit); - long vm_ramsize = host_get_ramsize(vm, nullptr); - - if (!pm_ramsize) { - /* We assume users do not want to care about ramsize. */ - return 1; - } - - if (pm_overcommit) { - XBT_VERB("%s allows memory overcommit.", sg_host_get_name(pm)); - return 1; - } - - long total_ramsize_of_vms = 0; - xbt_dynar_t dyn_vms = pm->pimpl_->getVms(); - { - unsigned int cursor = 0; - sg_host_t another_vm; - xbt_dynar_foreach(dyn_vms, cursor, another_vm) { - long another_vm_ramsize = host_get_ramsize(vm, nullptr); - total_ramsize_of_vms += another_vm_ramsize; - } - } - - if (vm_ramsize > pm_ramsize - total_ramsize_of_vms) { - XBT_WARN("cannnot start %s@%s due to memory shortage: vm_ramsize %ld, free %ld, pm_ramsize %ld (bytes).", - sg_host_get_name(vm), sg_host_get_name(pm), - vm_ramsize, pm_ramsize - total_ramsize_of_vms, pm_ramsize); - xbt_dynar_free(&dyn_vms); - return 0; - } - - return 1; -} - -void SIMIX_vm_start(sg_host_t vm) -{ - if (__can_be_started(vm)) - static_cast(vm->pimpl_)->setState(SURF_VM_STATE_RUNNING); - else - THROWF(vm_error, 0, "The VM %s cannot be started", vm->name().c_str()); -} - - -e_surf_vm_state_t SIMIX_vm_get_state(sg_host_t vm) -{ - return static_cast(vm->pimpl_)->getState(); -} - -/** - * @brief Function to migrate a SIMIX VM host. - * - * @param host the vm host to migrate (a sg_host_t) - */ -void SIMIX_vm_migrate(sg_host_t vm, sg_host_t dst_pm) -{ - /* precopy migration makes the VM temporally paused */ - xbt_assert(SIMIX_vm_get_state(vm) == SURF_VM_STATE_SUSPENDED); - - /* jump to vm_ws_xigrate(). this will update the vm location. */ - static_cast(vm)->pimpl_vm_->migrate(dst_pm); -} - -/** - * @brief Encompassing simcall to prevent the removal of the src or the dst node at the end of a VM migration - * The simcall actually invokes the following calls: - * simcall_vm_migrate(vm, dst_pm); - * simcall_vm_resume(vm); - * - * It is called at the end of the migration_rx_fun function from msg/msg_vm.c - * - * @param vm VM to migrate - * @param src_pm Source physical host - * @param dst_pmt Destination physical host - */ -void SIMIX_vm_migratefrom_resumeto(sg_host_t vm, sg_host_t src_pm, sg_host_t dst_pm) -{ - /* Update the vm location */ - SIMIX_vm_migrate(vm, dst_pm); - - /* Resume the VM */ - SIMIX_vm_resume(vm); -} - /** * @brief Function to suspend a SIMIX VM host. This function stops the execution of the * VM. All the processes on this VM will pause. The state of the VM is @@ -122,10 +21,10 @@ void SIMIX_vm_migratefrom_resumeto(sg_host_t vm, sg_host_t src_pm, sg_host_t dst */ void SIMIX_vm_suspend(sg_host_t vm, smx_actor_t issuer) { - if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_RUNNING) - THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str()); + if (static_cast(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING) + THROWF(vm_error, 0, "VM(%s) is not running", vm->cname()); - XBT_DEBUG("suspend VM(%s), where %d processes exist", vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list)); + XBT_DEBUG("suspend VM(%s), where %d processes exist", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list)); /* jump to vm_ws_suspend. The state will be set. */ static_cast(vm)->pimpl_vm_->suspend(); @@ -157,11 +56,10 @@ void simcall_HANDLER_vm_suspend(smx_simcall_t simcall, sg_host_t vm) */ void SIMIX_vm_resume(sg_host_t vm) { - if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_SUSPENDED) - THROWF(vm_error, 0, "VM(%s) was not suspended", vm->name().c_str()); + if (static_cast(vm)->pimpl_vm_->getState() != SURF_VM_STATE_SUSPENDED) + THROWF(vm_error, 0, "VM(%s) was not suspended", vm->cname()); - XBT_DEBUG("resume VM(%s), where %d processes exist", - vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list)); + XBT_DEBUG("resume VM(%s), where %d processes exist", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list)); /* jump to vm_ws_resume() */ static_cast(vm)->pimpl_vm_->resume(); @@ -182,19 +80,16 @@ void SIMIX_vm_resume(sg_host_t vm) */ void SIMIX_vm_save(sg_host_t vm, smx_actor_t issuer) { - const char *name = sg_host_get_name(vm); + if (static_cast(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING) + THROWF(vm_error, 0, "VM(%s) is not running", vm->cname()); - if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_RUNNING) - THROWF(vm_error, 0, "VM(%s) is not running", name); + XBT_DEBUG("save VM(%s), where %d processes exist", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list)); - XBT_DEBUG("save VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(vm)->process_list)); - - /* jump to vm_ws_save() */ static_cast(vm)->pimpl_vm_->save(); smx_actor_t smx_process, smx_process_safe; xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) { - XBT_DEBUG("suspend %s", smx_process->name.c_str()); + XBT_DEBUG("suspend %s", smx_process->cname()); SIMIX_process_suspend(smx_process, issuer); } } @@ -204,30 +99,6 @@ void simcall_HANDLER_vm_save(smx_simcall_t simcall, sg_host_t vm) SIMIX_vm_save(vm, simcall->issuer); } -/** - * @brief Function to restore a SIMIX VM host. This function restart the execution of the - * VM. All the processes on this VM will run again. - * - * @param vm the vm host to restore (a sg_host_t) - */ -void SIMIX_vm_restore(sg_host_t vm) -{ - if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_SAVED) - THROWF(vm_error, 0, "VM(%s) was not saved", vm->name().c_str()); - - XBT_DEBUG("restore VM(%s), where %d processes exist", - vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list)); - - /* jump to vm_ws_restore() */ - static_cast(vm)->pimpl_vm_->restore(); - - smx_actor_t smx_process, smx_process_safe; - xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) { - XBT_DEBUG("resume %s", smx_process->name.c_str()); - SIMIX_process_resume(smx_process); - } -} - /** * @brief Function to shutdown a SIMIX VM host. This function powers off the * VM. All the processes on this VM will be killed. But, the state of the VM is @@ -237,11 +108,10 @@ void SIMIX_vm_restore(sg_host_t vm) */ void SIMIX_vm_shutdown(sg_host_t vm, smx_actor_t issuer) { - if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_RUNNING) - THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str()); + if (static_cast(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING) + THROWF(vm_error, 0, "VM(%s) is not running", vm->cname()); - XBT_DEBUG("shutdown VM %s, that contains %d processes", - vm->name().c_str(),xbt_swag_size(sg_host_simix(vm)->process_list)); + XBT_DEBUG("shutdown VM %s, that contains %d processes", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list)); smx_actor_t smx_process, smx_process_safe; xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) { @@ -250,35 +120,10 @@ void SIMIX_vm_shutdown(sg_host_t vm, smx_actor_t issuer) } /* FIXME: we may have to do something at the surf layer, e.g., vcpu action */ - static_cast(vm->pimpl_)->setState(SURF_VM_STATE_CREATED); + static_cast(vm)->pimpl_vm_->setState(SURF_VM_STATE_CREATED); } void simcall_HANDLER_vm_shutdown(smx_simcall_t simcall, sg_host_t vm) { SIMIX_vm_shutdown(vm, simcall->issuer); } - -/** - * @brief Function to destroy a SIMIX VM host. - * - * @param vm the vm host to destroy (a sg_host_t) - */ -void SIMIX_vm_destroy(sg_host_t vm) -{ - /* this code basically performs a similar thing like SIMIX_host_destroy() */ - XBT_DEBUG("destroy %s", vm->name().c_str()); - - /* FIXME: this is really strange that everything fails if the next line is removed. - * This is as if we shared these data with the PM, which definitely should not be the case... - * - * We need to test that suspending a VM does not suspends the processes running on its PM, for example. - * Or we need to simplify this code enough to make it actually readable (but this sounds harder than testing) - */ - vm->extension_set(nullptr); - - /* Don't free these things twice: they are the ones of my physical host */ - vm->pimpl_cpu = nullptr; - vm->pimpl_netcard = nullptr; - - vm->destroy(); -}