X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/dbb714754efd44f72bf3b18e5dc973d8669ed735..220a6109b767302515959ba7b80a36cfd9fd94ca:/src/simix/smx_vm.c diff --git a/src/simix/smx_vm.c b/src/simix/smx_vm.c index d68acb2c00..d91b857b7d 100644 --- a/src/simix/smx_vm.c +++ b/src/simix/smx_vm.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2007-2012. The SimGrid Team. +/* Copyright (c) 2007-2014. The SimGrid Team. * All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it @@ -22,25 +22,15 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_vm, simix, "Logging specific to SIMIX (vms */ smx_host_t SIMIX_vm_create(const char *name, smx_host_t ind_phys_host) { + /* Create surf associated resource */ + surf_vm_workstation_model_create(name, ind_phys_host); - smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1); - s_smx_process_t proc; - - // TODO check why we do not have any VM here and why we have the host_proc_hookup ? - - /* Host structure */ - smx_host->data = NULL; - smx_host->process_list = - xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup)); + smx_host_t smx_host = SIMIX_host_create(name, ind_phys_host, NULL); - /* Update global variables */ - xbt_lib_set(host_lib,name,SIMIX_HOST_LEVEL,smx_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. */ - /* Create surf associated resource */ - // TODO change phys_host into the right workstation surf model - surf_vm_workstation_model->extension.vm_workstation.create(name, ind_phys_host); - - return xbt_lib_get_elm_or_null(host_lib, name); + return smx_host; } @@ -50,63 +40,78 @@ smx_host_t SIMIX_pre_vm_create(smx_simcall_t simcall, const char *name, smx_host } -static int get_host_property_as_integer(smx_host_t host, const char *name) +/* works for VMs and PMs */ +static long host_get_ramsize(smx_host_t vm, int *overcommit) { - xbt_dict_t dict = SIMIX_host_get_properties(host); - - char *value = xbt_dict_get_or_null(dict, name); - return atoi(value); -} + s_ws_params_t params; + surf_workstation_get_params(vm, ¶ms); + if (overcommit) + *overcommit = params.overcommit; + return params.ramsize; +} /* **** start a VM **** */ static int __can_be_started(smx_host_t vm) { - // TODO add checking code related to overcommitment or not. + smx_host_t pm = surf_vm_workstation_get_pm(vm); + + int pm_overcommit = 0; + long pm_ramsize = host_get_ramsize(pm, &pm_overcommit); + long vm_ramsize = host_get_ramsize(vm, NULL); -#if 0 - int overcommit = get_host_property_as_integer(vm, "OverCommit"); - int core_nb = get_host_property_as_integer(vm, "CORE_NB"); - int mem_cap = get_host_property_as_integer(vm, "MEM_CAP"); - int net_cap = get_host_property_as_integer(vm, "NET_CAP"); -#endif + if (!pm_ramsize) { + /* We assume users do not want to care about ramsize. */ + return 1; + } - /* we need to get other VM objects on this physical host. */ + if (pm_overcommit) { + XBT_INFO("%s allows memory overcommit.", pm->key); + return 1; + } + long total_ramsize_of_vms = 0; + xbt_dynar_t dyn_vms = surf_workstation_get_vms(pm); + { + unsigned int cursor = 0; + smx_host_t another_vm; + xbt_dynar_foreach(dyn_vms, cursor, another_vm) { + long another_vm_ramsize = host_get_ramsize(vm, NULL); + 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).", + vm->key, pm->key, vm_ramsize, pm_ramsize - total_ramsize_of_vms, pm_ramsize); + xbt_dynar_free(&dyn_vms); + return 0; + } + xbt_dynar_free(&dyn_vms); return 1; } void SIMIX_vm_start(smx_host_t ind_vm) { - //TODO only start the VM if you can if (__can_be_started(ind_vm)) - SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_RUNNING); + surf_resource_set_state(surf_workstation_resource_priv(ind_vm), + (int)SURF_VM_STATE_RUNNING); else THROWF(vm_error, 0, "The VM %s cannot be started", SIMIX_host_get_name(ind_vm)); } -void SIMIX_pre_vm_start(smx_simcall_t simcall, smx_host_t ind_vm) -{ - SIMIX_vm_start(ind_vm); -} -/* ***** set/get state of a VM ***** */ -void SIMIX_vm_set_state(smx_host_t ind_vm, int state) -{ - surf_vm_workstation_model->extension.vm_workstation.set_state(ind_vm, state); -} -void SIMIX_pre_vm_set_state(smx_simcall_t simcall, smx_host_t ind_vm, int state) +void SIMIX_pre_vm_start(smx_simcall_t simcall, smx_host_t ind_vm) { - SIMIX_vm_set_state(ind_vm, state); + SIMIX_vm_start(ind_vm); } int SIMIX_vm_get_state(smx_host_t ind_vm) { - return surf_vm_workstation_model->extension.vm_workstation.get_state(ind_vm); + return surf_resource_get_state(surf_workstation_resource_priv(ind_vm)); } int SIMIX_pre_vm_get_state(smx_simcall_t simcall, smx_host_t ind_vm) @@ -116,19 +121,17 @@ int SIMIX_pre_vm_get_state(smx_simcall_t simcall, smx_host_t ind_vm) /** - * \brief Function to migrate a SIMIX VM host. + * \brief Function to migrate a SIMIX VM host. * * \param host the vm host to migrate (a smx_host_t) */ void SIMIX_vm_migrate(smx_host_t ind_vm, smx_host_t ind_dst_pm) { - const char *name = SIMIX_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); + /* precopy migration makes the VM temporally paused */ + xbt_assert(SIMIX_vm_get_state(ind_vm) == SURF_VM_STATE_SUSPENDED); - /* jump to vm_ws_migrate(). this will update the vm location. */ - surf_vm_workstation_model->extension.vm_workstation.migrate(ind_vm, ind_dst_pm); + /* jump to vm_ws_xigrate(). this will update the vm location. */ + surf_vm_workstation_migrate(ind_vm, ind_dst_pm); } void SIMIX_pre_vm_migrate(smx_simcall_t simcall, smx_host_t ind_vm, smx_host_t ind_dst_pm) @@ -138,14 +141,14 @@ void SIMIX_pre_vm_migrate(smx_simcall_t simcall, smx_host_t ind_vm, smx_host_t i /** - * \brief Function to get the physical host of the given the SIMIX VM host. + * \brief Function to get the physical host of the given SIMIX VM host. * * \param host the vm host to get_phys_host (a smx_host_t) */ void *SIMIX_vm_get_pm(smx_host_t ind_vm) { /* jump to vm_ws_get_pm(). this will return the vm name. */ - return surf_vm_workstation_model->extension.vm_workstation.get_pm(ind_vm); + return surf_vm_workstation_get_pm(ind_vm); } void *SIMIX_pre_vm_get_pm(smx_simcall_t simcall, smx_host_t ind_vm) @@ -155,7 +158,47 @@ void *SIMIX_pre_vm_get_pm(smx_simcall_t simcall, smx_host_t ind_vm) /** - * \brief Function to suspend a SIMIX VM host. This function stops the exection of the + * \brief Function to set the CPU bound of the given SIMIX VM host. + * + * \param host the vm host (a smx_host_t) + * \param bound bound (a double) + */ +void SIMIX_vm_set_bound(smx_host_t ind_vm, double bound) +{ + /* jump to vm_ws_set_vm_bound(). */ + surf_vm_workstation_set_bound(ind_vm, bound); +} + +void SIMIX_pre_vm_set_bound(smx_simcall_t simcall, smx_host_t ind_vm, double bound) +{ + SIMIX_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 smx_host_t) + * \param host the pm host (a smx_host_t) + * \param mask affinity mask (a unsigned long) + */ +void SIMIX_vm_set_affinity(smx_host_t ind_vm, smx_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_workstation_set_affinity(ind_vm, ind_pm, mask); +} + +void SIMIX_pre_vm_set_affinity(smx_simcall_t simcall, smx_host_t ind_vm, smx_host_t ind_pm, unsigned long mask) +{ + SIMIX_vm_set_affinity(ind_vm, ind_pm, mask); +} + + +/** + * \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. * @@ -171,7 +214,7 @@ void SIMIX_vm_suspend(smx_host_t ind_vm, smx_process_t issuer) XBT_DEBUG("suspend VM(%s), where %d processes exist", name, xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list)); /* jump to vm_ws_suspend. The state will be set. */ - surf_vm_workstation_model->extension.vm_workstation.suspend(ind_vm); + surf_vm_workstation_suspend(ind_vm); smx_process_t smx_process, smx_process_safe; xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) { @@ -191,16 +234,13 @@ void SIMIX_pre_vm_suspend(smx_simcall_t simcall, smx_host_t ind_vm) SIMIX_vm_suspend(ind_vm, simcall->issuer); - /* without this, simcall_vm_suspend() does not return to the userland. why? */ - SIMIX_simcall_answer(simcall); - XBT_DEBUG("SIMIX_pre_vm_suspend done"); } /** * \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. + * VM. All the processes on this VM will run again. * * \param host the vm host to resume (a smx_host_t) */ @@ -214,7 +254,7 @@ void SIMIX_vm_resume(smx_host_t ind_vm, smx_process_t issuer) XBT_DEBUG("resume VM(%s), where %d processes exist", name, xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list)); /* jump to vm_ws_resume() */ - surf_vm_workstation_model->extension.vm_workstation.resume(ind_vm); + surf_vm_workstation_resume(ind_vm); smx_process_t smx_process, smx_process_safe; xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) { @@ -226,7 +266,6 @@ void SIMIX_vm_resume(smx_host_t ind_vm, smx_process_t issuer) void SIMIX_pre_vm_resume(smx_simcall_t simcall, smx_host_t ind_vm) { SIMIX_vm_resume(ind_vm, simcall->issuer); - SIMIX_simcall_answer(simcall); } @@ -248,7 +287,7 @@ void SIMIX_vm_save(smx_host_t ind_vm, smx_process_t issuer) XBT_DEBUG("save VM(%s), where %d processes exist", name, xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list)); /* jump to vm_ws_save() */ - surf_vm_workstation_model->extension.vm_workstation.save(ind_vm); + surf_vm_workstation_save(ind_vm); smx_process_t smx_process, smx_process_safe; xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) { @@ -260,15 +299,12 @@ void SIMIX_vm_save(smx_host_t ind_vm, smx_process_t issuer) void SIMIX_pre_vm_save(smx_simcall_t simcall, smx_host_t ind_vm) { SIMIX_vm_save(ind_vm, simcall->issuer); - - /* without this, simcall_vm_suspend() does not return to the userland. why? */ - SIMIX_simcall_answer(simcall); } /** * \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. + * VM. All the processes on this VM will run again. * * \param host the vm host to restore (a smx_host_t) */ @@ -282,7 +318,7 @@ void SIMIX_vm_restore(smx_host_t ind_vm, smx_process_t issuer) XBT_DEBUG("restore VM(%s), where %d processes exist", name, xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list)); /* jump to vm_ws_restore() */ - surf_vm_workstation_model->extension.vm_workstation.resume(ind_vm); + surf_vm_workstation_resume(ind_vm); smx_process_t smx_process, smx_process_safe; xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) { @@ -294,7 +330,6 @@ void SIMIX_vm_restore(smx_host_t ind_vm, smx_process_t issuer) void SIMIX_pre_vm_restore(smx_simcall_t simcall, smx_host_t ind_vm) { SIMIX_vm_restore(ind_vm, simcall->issuer); - SIMIX_simcall_answer(simcall); } @@ -312,22 +347,23 @@ void SIMIX_vm_shutdown(smx_host_t ind_vm, smx_process_t issuer) 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(SIMIX_host_priv(ind_vm)->process_list)); smx_process_t smx_process, smx_process_safe; xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) { - XBT_DEBUG("shutdown %s", name); + XBT_DEBUG("kill %s", smx_process->name); SIMIX_process_kill(smx_process, issuer); } /* FIXME: we may have to do something at the surf layer, e.g., vcpu action */ - SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_CREATED); + surf_resource_set_state(surf_workstation_resource_priv(ind_vm), + (int)SURF_VM_STATE_CREATED); } void SIMIX_pre_vm_shutdown(smx_simcall_t simcall, smx_host_t ind_vm) { SIMIX_vm_shutdown(ind_vm, simcall->issuer); - SIMIX_simcall_answer(simcall); } @@ -343,15 +379,16 @@ void SIMIX_vm_destroy(smx_host_t ind_vm) xbt_assert((ind_vm != NULL), "Invalid parameters"); const char *hostname = SIMIX_host_get_name(ind_vm); - smx_host_priv_t host_priv = SIMIX_host_priv(ind_vm); + XBT_DEBUG("destroy %s", hostname); /* this will call the registered callback function, i.e., SIMIX_host_destroy(). */ xbt_lib_unset(host_lib, hostname, SIMIX_HOST_LEVEL, 1); /* jump to vm_ws_destroy(). The surf level resource will be freed. */ - surf_vm_workstation_model->extension.vm_workstation.destroy(ind_vm); + surf_vm_workstation_destroy(ind_vm); } -void SIMIX_pre_vm_destroy(smx_simcall_t simcall, smx_host_t ind_vm){ - SIMIX_vm_destroy(ind_vm); +void SIMIX_pre_vm_destroy(smx_simcall_t simcall, smx_host_t ind_vm) +{ + SIMIX_vm_destroy(ind_vm); }