1 /* Copyright (c) 2013-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "host_interface.hpp"
9 #include <simgrid/Host.hpp>
11 #include "src/simix/smx_private.h"
12 #include "cpu_cas01.hpp"
13 #include "simgrid/sg_config.h"
15 #include "network_interface.hpp"
16 #include "virtual_machine.hpp"
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_host, surf,
19 "Logging specific to the SURF host module");
21 simgrid::surf::HostModel *surf_host_model = NULL;
23 void host_add_traces(){
24 surf_host_model->addTraces();
34 simgrid::xbt::FacetLevel<simgrid::Host, Host> Host::LEVEL;
36 surf_callback(void, simgrid::surf::Host*) hostCreatedCallbacks;
37 surf_callback(void, simgrid::surf::Host*) hostDestructedCallbacks;
38 surf_callback(void, simgrid::surf::Host*, e_surf_resource_state_t, e_surf_resource_state_t) hostStateChangedCallbacks;
39 surf_callback(void, simgrid::surf::HostAction*, e_surf_action_state_t, e_surf_action_state_t) hostActionStateChangedCallbacks;
45 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
46 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
47 * active task, the dummy CPU action must be deactivated, so that the VM does
48 * not get any CPU share in the PM layer. */
49 void HostModel::adjustWeightOfDummyCpuActions()
51 /* iterate for all virtual machines */
52 for (VMModel::vm_list_t::iterator iter =
53 VMModel::ws_vms.begin();
54 iter != VMModel::ws_vms.end(); ++iter) {
56 VirtualMachine *ws_vm = &*iter;
57 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
58 xbt_assert(cpu_cas01, "cpu-less host");
60 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
61 // int is_active_old = constraint_is_active(cpu_cas01);
64 /* some tasks exist on this VM */
65 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
67 /* FIXME: we should use lmm_update_variable_weight() ? */
68 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
69 ws_vm->p_action->setPriority(1);
72 /* no task exits on this VM */
73 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
75 ws_vm->p_action->setPriority(0);
87 LEVEL = simgrid::Host::add_level<simgrid::surf::Host>();
88 SURF_HOST_LEVEL = LEVEL.id();
92 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props,
93 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
94 : Resource(model, name)
95 , p_storage(storage), p_netElm(netElm), p_cpu(cpu), p_properties(props)
100 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
101 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
102 : Resource(model, name, constraint)
103 , p_storage(storage), p_netElm(netElm), p_cpu(cpu), p_properties(props)
105 p_params.ramsize = 0;
109 surf_callback_emit(hostDestructedCallbacks, this);
110 xbt_dict_free(&p_properties);
113 void Host::attach(simgrid::Host* host)
115 if (p_host != nullptr)
116 xbt_die("Already attached to host %s", host->id().c_str());
117 host->set_facet(this);
119 surf_callback_emit(hostCreatedCallbacks, this);
122 void Host::setState(e_surf_resource_state_t state){
123 e_surf_resource_state_t old = Resource::getState();
124 Resource::setState(state);
125 surf_callback_emit(hostStateChangedCallbacks, this, old, state);
126 p_cpu->setState(state);
129 xbt_dict_t Host::getProperties()
131 if (p_properties==NULL)
132 p_properties = xbt_dict_new();
136 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
138 simgrid::surf::Storage *st = NULL;
142 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
143 xbt_dynar_foreach(p_storage,cursor,mnt)
145 XBT_DEBUG("See '%s'",mnt.name);
146 if(!strcmp(mount,mnt.name)){
147 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
151 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
155 xbt_dict_t Host::getMountedStorageList()
159 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
160 char *storage_name = NULL;
162 xbt_dynar_foreach(p_storage,i,mnt){
163 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
164 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
169 xbt_dynar_t Host::getAttachedStorageList()
171 xbt_lib_cursor_t cursor;
174 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
175 xbt_lib_foreach(storage_lib, cursor, key, data) {
176 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
177 simgrid::surf::Storage *storage = static_cast<simgrid::surf::Storage*>(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL));
178 if(!strcmp((const char*)storage->p_attach,this->getName())){
179 xbt_dynar_push_as(result, void *, (void*)storage->getName());
186 Action *Host::open(const char* fullpath) {
188 simgrid::surf::Storage *st = NULL;
191 size_t longest_prefix_length = 0;
193 char *file_mount_name = NULL;
194 char *mount_name = NULL;
196 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
197 xbt_dynar_foreach(p_storage,cursor,mnt)
199 XBT_DEBUG("See '%s'",mnt.name);
200 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
201 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
202 file_mount_name[strlen(mnt.name)] = '\0';
204 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
205 {/* The current mount name is found in the full path and is bigger than the previous*/
206 longest_prefix_length = strlen(mnt.name);
207 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
209 free(file_mount_name);
211 if(longest_prefix_length>0)
212 { /* Mount point found, split fullpath into mount_name and path+filename*/
213 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
214 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
215 strncpy(mount_name, fullpath, longest_prefix_length+1);
216 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
217 path[strlen(fullpath)-longest_prefix_length] = '\0';
218 mount_name[longest_prefix_length] = '\0';
221 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
223 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
224 Action *action = st->open((const char*)mount_name, (const char*)path);
226 free((char*)mount_name);
230 Action *Host::close(surf_file_t fd) {
231 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
232 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
233 return st->close(fd);
236 Action *Host::read(surf_file_t fd, sg_size_t size) {
237 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
238 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
239 return st->read(fd, size);
242 Action *Host::write(surf_file_t fd, sg_size_t size) {
243 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
244 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
245 return st->write(fd, size);
248 int Host::unlink(surf_file_t fd) {
250 XBT_WARN("No such file descriptor. Impossible to unlink");
254 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
255 /* Check if the file is on this storage */
256 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
257 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
261 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
262 st->m_usedSize -= fd->size;
264 // Remove the file from storage
265 xbt_dict_remove(st->p_content, fd->name);
275 sg_size_t Host::getSize(surf_file_t fd){
279 xbt_dynar_t Host::getInfo( surf_file_t fd)
281 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
282 sg_size_t *psize = xbt_new(sg_size_t, 1);
284 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
285 xbt_dynar_push_as(info, sg_size_t *, psize);
286 xbt_dynar_push_as(info, void *, fd->mount);
287 xbt_dynar_push_as(info, void *, (void *)st->getName());
288 xbt_dynar_push_as(info, void *, st->p_typeId);
289 xbt_dynar_push_as(info, void *, st->p_contentType);
294 sg_size_t Host::fileTell(surf_file_t fd){
295 return fd->current_position;
298 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
302 fd->current_position = offset;
305 fd->current_position += offset;
308 fd->current_position = fd->size + offset;
315 int Host::fileMove(surf_file_t fd, const char* fullpath){
316 /* Check if the new full path is on the same mount point */
317 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
318 sg_size_t *psize, *new_psize;
320 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
322 new_psize = xbt_new(sg_size_t, 1);
324 if (psize){// src file exists
325 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
326 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
327 strncpy(path, fullpath+strlen(fd->mount),
328 strlen(fullpath)-strlen(fd->mount)+1);
329 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
331 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
335 XBT_WARN("File %s doesn't exist", fd->name);
339 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
340 fullpath, fd->mount);
345 xbt_dynar_t Host::getVms()
347 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
349 /* iterate for all virtual machines */
350 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
351 simgrid::surf::VMModel::ws_vms.begin();
352 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
354 simgrid::surf::VirtualMachine *ws_vm = &*iter;
355 if (this == ws_vm->p_subWs)
356 xbt_dynar_push(dyn, &ws_vm);
362 void Host::getParams(vm_params_t params)
367 void Host::setParams(vm_params_t params)
369 /* may check something here. */
377 void HostAction::setState(e_surf_action_state_t state){
378 e_surf_action_state_t old = getState();
379 Action::setState(state);
380 surf_callback_emit(hostActionStateChangedCallbacks, this, old, state);