X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/1928b36ff7a719c88d3db6b4e685bed8f544c7da..411bdcf820a148926951d59809cd452e1c683eec:/src/simix/smx_vm.cpp diff --git a/src/simix/smx_vm.cpp b/src/simix/smx_vm.cpp index f7b6c3e4b4..10def72ddd 100644 --- a/src/simix/smx_vm.cpp +++ b/src/simix/smx_vm.cpp @@ -3,206 +3,34 @@ /* 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 "smx_private.h" #include "mc/mc.h" -#include "src/surf/virtual_machine.hpp" +#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 (vms)"); - -/* **** create a VM **** */ - -/** - * @brief Internal function to create a SIMIX host. - * @param name name of the host to create - * @param data some user data (may be nullptr) - */ -sg_host_t SIMIX_vm_create(const char *name, sg_host_t ind_phys_host) -{ - /* Create surf associated resource */ - surf_vm_model_create(name, ind_phys_host); - sg_host_t host = sg_host_by_name(name); - SIMIX_host_create(host); - - /* We will be able to register the VM to its physical host, so that we can promptly - * retrieve the list VMs on the physical host. */ - - return host; -} - - -/* works for VMs and PMs */ -static long host_get_ramsize(sg_host_t vm, int *overcommit) -{ - s_vm_params_t params; - vm->extension()->getParams(¶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 = surf_vm_get_pm(vm); - - 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->extension()->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 ind_vm) -{ - if (__can_be_started(ind_vm)) - static_cast( - ind_vm->extension() - )->setState(SURF_VM_STATE_RUNNING); - else - THROWF(vm_error, 0, "The VM %s cannot be started", sg_host_get_name(ind_vm)); -} - - -e_surf_vm_state_t SIMIX_vm_get_state(sg_host_t ind_vm) -{ - return static_cast( - ind_vm->extension() - )->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 ind_vm, sg_host_t ind_dst_pm) -{ - /* precopy migration makes the VM temporally paused */ - xbt_assert(SIMIX_vm_get_state(ind_vm) == SURF_VM_STATE_SUSPENDED); - - /* jump to vm_ws_xigrate(). this will update the vm location. */ - surf_vm_migrate(ind_vm, ind_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_set_affinity(vm, src_pm, 0); - * 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) -{ - /* deinstall the current affinity setting for the CPU */ - SIMIX_vm_set_affinity(vm, src_pm, 0); - - /* Update the vm location */ - SIMIX_vm_migrate(vm, dst_pm); - - /* Resume the VM */ - smx_process_t self = SIMIX_process_self(); - SIMIX_vm_resume(vm, self->simcall.issuer); -} - -/** - * @brief Function to get the physical host of the given SIMIX VM host. - * - * @param host the vm host to get_phys_host (a sg_host_t) - */ -void *SIMIX_vm_get_pm(sg_host_t ind_vm) -{ - /* jump to vm_ws_get_pm(). this will return the vm name. */ - return surf_vm_get_pm(ind_vm); -} - -/** - * @brief Function to set the CPU bound of the given SIMIX VM host. - * - * @param host the vm host (a sg_host_t) - * @param bound bound (a double) - */ -void SIMIX_vm_set_bound(sg_host_t ind_vm, double bound) -{ - /* jump to vm_ws_set_vm_bound(). */ - surf_vm_set_bound(ind_vm, bound); -} - -/** - * @brief Function to set the CPU affinity of the given SIMIX VM host. - * - * @param host the vm host (a sg_host_t) - * @param host the pm host (a sg_host_t) - * @param mask affinity mask (a unsigned long) - */ -void SIMIX_vm_set_affinity(sg_host_t ind_vm, sg_host_t ind_pm, unsigned long mask) -{ - /* make sure this at the MSG layer. */ - xbt_assert(SIMIX_vm_get_pm(ind_vm) == ind_pm); - - /* jump to vm_ws_set_vm_affinity(). */ - surf_vm_set_affinity(ind_vm, ind_pm, mask); -} - +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_vm, simix, "Logging specific to SIMIX Virtual Machines"); /** * @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 * preserved on memory. We can later resume it again. * - * @param host the vm host to suspend (a sg_host_t) + * @param vm the vm host to suspend (a sg_host_t) */ -void SIMIX_vm_suspend(sg_host_t ind_vm, smx_process_t issuer) +void SIMIX_vm_suspend(sg_host_t vm, smx_actor_t issuer) { - const char *name = sg_host_get_name(ind_vm); - - if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_RUNNING) - THROWF(vm_error, 0, "VM(%s) is not running", name); + if (static_cast(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING) + THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str()); - XBT_DEBUG("suspend VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(ind_vm)->process_list)); + XBT_DEBUG("suspend VM(%s), where %d processes exist", vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list)); /* jump to vm_ws_suspend. The state will be set. */ - surf_vm_suspend(ind_vm); + static_cast(vm)->pimpl_vm_->suspend(); - smx_process_t smx_process, smx_process_safe; - xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(ind_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) { XBT_DEBUG("suspend %s", smx_process->name.c_str()); SIMIX_process_suspend(smx_process, issuer); } @@ -210,14 +38,11 @@ void SIMIX_vm_suspend(sg_host_t ind_vm, smx_process_t issuer) XBT_DEBUG("suspend all processes on the VM done done"); } -void simcall_HANDLER_vm_suspend(smx_simcall_t simcall, sg_host_t ind_vm) +void simcall_HANDLER_vm_suspend(smx_simcall_t simcall, sg_host_t vm) { - if (simcall->issuer->host == ind_vm) { - XBT_ERROR("cannot suspend the VM where I run"); - DIE_IMPOSSIBLE; - } + xbt_assert(simcall->issuer->host != vm, "cannot suspend the VM where I run"); - SIMIX_vm_suspend(ind_vm, simcall->issuer); + SIMIX_vm_suspend(vm, simcall->issuer); XBT_DEBUG("simcall_HANDLER_vm_suspend done"); } @@ -227,148 +52,83 @@ void simcall_HANDLER_vm_suspend(smx_simcall_t simcall, sg_host_t ind_vm) * @brief Function to resume a SIMIX VM host. This function restart the execution of the * VM. All the processes on this VM will run again. * - * @param host the vm host to resume (a sg_host_t) + * @param vm the vm host to resume (a sg_host_t) */ -void SIMIX_vm_resume(sg_host_t ind_vm, smx_process_t issuer) +void SIMIX_vm_resume(sg_host_t vm) { - const char *name = sg_host_get_name(ind_vm); + if (static_cast(vm)->pimpl_vm_->getState() != SURF_VM_STATE_SUSPENDED) + THROWF(vm_error, 0, "VM(%s) was not suspended", vm->name().c_str()); - if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_SUSPENDED) - THROWF(vm_error, 0, "VM(%s) was not suspended", name); - - XBT_DEBUG("resume VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(ind_vm)->process_list)); + XBT_DEBUG("resume VM(%s), where %d processes exist", + vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list)); /* jump to vm_ws_resume() */ - surf_vm_resume(ind_vm); + static_cast(vm)->pimpl_vm_->resume(); - smx_process_t smx_process, smx_process_safe; - xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(ind_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) { XBT_DEBUG("resume %s", smx_process->name.c_str()); - SIMIX_process_resume(smx_process, issuer); + SIMIX_process_resume(smx_process); } } -void simcall_HANDLER_vm_resume(smx_simcall_t simcall, sg_host_t ind_vm) -{ - SIMIX_vm_resume(ind_vm, simcall->issuer); -} - - /** * @brief Function to save a SIMIX VM host. * This function is the same as vm_suspend, but the state of the VM is saved to the disk, and not preserved on memory. * We can later restore it again. * - * @param host the vm host to save (a sg_host_t) + * @param vm the vm host to save (a sg_host_t) */ -void SIMIX_vm_save(sg_host_t ind_vm, smx_process_t issuer) +void SIMIX_vm_save(sg_host_t vm, smx_actor_t issuer) { - const char *name = sg_host_get_name(ind_vm); + const char *name = sg_host_get_name(vm); - if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_RUNNING) + if (static_cast(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING) THROWF(vm_error, 0, "VM(%s) is not running", name); - - XBT_DEBUG("save VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(ind_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() */ - surf_vm_save(ind_vm); + static_cast(vm)->pimpl_vm_->save(); - smx_process_t smx_process, smx_process_safe; - xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(ind_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) { XBT_DEBUG("suspend %s", smx_process->name.c_str()); SIMIX_process_suspend(smx_process, issuer); } } -void simcall_HANDLER_vm_save(smx_simcall_t simcall, sg_host_t ind_vm) +void simcall_HANDLER_vm_save(smx_simcall_t simcall, sg_host_t vm) { - SIMIX_vm_save(ind_vm, simcall->issuer); + 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 host the vm host to restore (a sg_host_t) - */ -void SIMIX_vm_restore(sg_host_t ind_vm, smx_process_t issuer) -{ - const char *name = sg_host_get_name(ind_vm); - - if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_SAVED) - THROWF(vm_error, 0, "VM(%s) was not saved", name); - - XBT_DEBUG("restore VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(ind_vm)->process_list)); - - /* jump to vm_ws_restore() */ - surf_vm_resume(ind_vm); - - smx_process_t smx_process, smx_process_safe; - xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(ind_vm)->process_list) { - XBT_DEBUG("resume %s", smx_process->name.c_str()); - SIMIX_process_resume(smx_process, issuer); - } -} - -void simcall_HANDLER_vm_restore(smx_simcall_t simcall, sg_host_t ind_vm) -{ - SIMIX_vm_restore(ind_vm, simcall->issuer); -} - - /** * @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 * preserved on memory. We can later start it again. * - * @param host the vm host to shutdown (a sg_host_t) + * @param vm the VM to shutdown (a sg_host_t) */ -void SIMIX_vm_shutdown(sg_host_t ind_vm, smx_process_t issuer) +void SIMIX_vm_shutdown(sg_host_t vm, smx_actor_t issuer) { - const char *name = sg_host_get_name(ind_vm); + if (static_cast(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING) + THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str()); - if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_RUNNING) - THROWF(vm_error, 0, "VM(%s) is not running", name); - - XBT_DEBUG("shutdown %s", name); - XBT_DEBUG("%d processes in the VM", xbt_swag_size(sg_host_simix(ind_vm)->process_list)); + XBT_DEBUG("shutdown VM %s, that contains %d processes", + vm->name().c_str(),xbt_swag_size(sg_host_simix(vm)->process_list)); - smx_process_t smx_process, smx_process_safe; - xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(ind_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) { XBT_DEBUG("kill %s", smx_process->name.c_str()); SIMIX_process_kill(smx_process, issuer); } /* FIXME: we may have to do something at the surf layer, e.g., vcpu action */ - static_cast( - ind_vm->extension() - )->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 ind_vm) +void simcall_HANDLER_vm_shutdown(smx_simcall_t simcall, sg_host_t vm) { - SIMIX_vm_shutdown(ind_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() */ - - const char *hostname = sg_host_get_name(vm); - - XBT_DEBUG("destroy %s", hostname); - - /* this will call the registered callback function, i.e., SIMIX_host_destroy(). */ - sg_host_simix_destroy(vm); - - /* jump to vm_ws_destroy(). The surf level resource will be freed. */ - surf_vm_destroy(vm); + SIMIX_vm_shutdown(vm, simcall->issuer); }