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::Extension<simgrid::Host, Host> Host::EXTENSION_ID;
40 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
41 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
42 * active task, the dummy CPU action must be deactivated, so that the VM does
43 * not get any CPU share in the PM layer. */
44 void HostModel::adjustWeightOfDummyCpuActions()
46 /* iterate for all virtual machines */
47 for (VMModel::vm_list_t::iterator iter =
48 VMModel::ws_vms.begin();
49 iter != VMModel::ws_vms.end(); ++iter) {
51 VirtualMachine *ws_vm = &*iter;
52 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
53 xbt_assert(cpu_cas01, "cpu-less host");
55 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
56 // int is_active_old = constraint_is_active(cpu_cas01);
59 /* some tasks exist on this VM */
60 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
62 /* FIXME: we should use lmm_update_variable_weight() ? */
63 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
64 ws_vm->p_action->setPriority(1);
67 /* no task exits on this VM */
68 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
70 ws_vm->p_action->setPriority(0);
78 simgrid::surf::signal<void(simgrid::surf::Host*)> Host::creationCallbacks;
79 simgrid::surf::signal<void(simgrid::surf::Host*)> Host::destructionCallbacks;
80 simgrid::surf::signal<void(simgrid::surf::Host*, e_surf_resource_state_t, e_surf_resource_state_t)> Host::stateChangeCallbacks;
84 if (!EXTENSION_ID.valid()) {
85 EXTENSION_ID = simgrid::Host::extension_create<simgrid::surf::Host>();
86 SURF_HOST_LEVEL = EXTENSION_ID.id(); // FIXME: KILLME
90 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props,
91 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
92 : Resource(model, name)
93 , PropertyHolder(props)
94 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
99 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
100 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
101 : Resource(model, name, constraint)
102 , PropertyHolder(props)
103 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
105 p_params.ramsize = 0;
110 destructionCallbacks(this);
119 void Host::attach(simgrid::Host* host)
121 if (p_host != nullptr)
122 xbt_die("Already attached to host %s", host->id().c_str());
123 host->extension_set(this);
125 creationCallbacks(this);
128 void Host::setState(e_surf_resource_state_t state){
129 e_surf_resource_state_t old = Resource::getState();
130 Resource::setState(state);
131 stateChangeCallbacks(this, old, state);
132 p_cpu->setState(state);
135 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
137 simgrid::surf::Storage *st = NULL;
141 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
142 xbt_dynar_foreach(p_storage,cursor,mnt)
144 XBT_DEBUG("See '%s'",mnt.name);
145 if(!strcmp(mount,mnt.name)){
146 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
150 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
154 xbt_dict_t Host::getMountedStorageList()
158 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
159 char *storage_name = NULL;
161 xbt_dynar_foreach(p_storage,i,mnt){
162 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
163 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
168 xbt_dynar_t Host::getAttachedStorageList()
170 xbt_lib_cursor_t cursor;
173 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
174 xbt_lib_foreach(storage_lib, cursor, key, data) {
175 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
176 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));
177 if(!strcmp((const char*)storage->p_attach,this->getName())){
178 xbt_dynar_push_as(result, void *, (void*)storage->getName());
185 Action *Host::open(const char* fullpath) {
187 simgrid::surf::Storage *st = NULL;
190 size_t longest_prefix_length = 0;
192 char *file_mount_name = NULL;
193 char *mount_name = NULL;
195 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
196 xbt_dynar_foreach(p_storage,cursor,mnt)
198 XBT_DEBUG("See '%s'",mnt.name);
199 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
200 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
201 file_mount_name[strlen(mnt.name)] = '\0';
203 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
204 {/* The current mount name is found in the full path and is bigger than the previous*/
205 longest_prefix_length = strlen(mnt.name);
206 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
208 free(file_mount_name);
210 if(longest_prefix_length>0)
211 { /* Mount point found, split fullpath into mount_name and path+filename*/
212 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
213 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
214 strncpy(mount_name, fullpath, longest_prefix_length+1);
215 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
216 path[strlen(fullpath)-longest_prefix_length] = '\0';
217 mount_name[longest_prefix_length] = '\0';
220 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
222 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
223 Action *action = st->open((const char*)mount_name, (const char*)path);
225 free((char*)mount_name);
229 Action *Host::close(surf_file_t fd) {
230 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
231 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
232 return st->close(fd);
235 Action *Host::read(surf_file_t fd, sg_size_t size) {
236 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
237 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
238 return st->read(fd, size);
241 Action *Host::write(surf_file_t fd, sg_size_t size) {
242 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
243 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
244 return st->write(fd, size);
247 int Host::unlink(surf_file_t fd) {
249 XBT_WARN("No such file descriptor. Impossible to unlink");
253 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
254 /* Check if the file is on this storage */
255 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
256 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
260 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
261 st->m_usedSize -= fd->size;
263 // Remove the file from storage
264 xbt_dict_remove(st->p_content, fd->name);
274 sg_size_t Host::getSize(surf_file_t fd){
278 xbt_dynar_t Host::getInfo( surf_file_t fd)
280 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
281 sg_size_t *psize = xbt_new(sg_size_t, 1);
283 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
284 xbt_dynar_push_as(info, sg_size_t *, psize);
285 xbt_dynar_push_as(info, void *, fd->mount);
286 xbt_dynar_push_as(info, void *, (void *)st->getName());
287 xbt_dynar_push_as(info, void *, st->p_typeId);
288 xbt_dynar_push_as(info, void *, st->p_contentType);
293 sg_size_t Host::fileTell(surf_file_t fd){
294 return fd->current_position;
297 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
301 fd->current_position = offset;
304 fd->current_position += offset;
307 fd->current_position = fd->size + offset;
314 int Host::fileMove(surf_file_t fd, const char* fullpath){
315 /* Check if the new full path is on the same mount point */
316 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
317 sg_size_t *psize, *new_psize;
319 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
321 new_psize = xbt_new(sg_size_t, 1);
323 if (psize){// src file exists
324 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
325 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
326 strncpy(path, fullpath+strlen(fd->mount),
327 strlen(fullpath)-strlen(fd->mount)+1);
328 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
330 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
334 XBT_WARN("File %s doesn't exist", fd->name);
338 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
339 fullpath, fd->mount);
344 xbt_dynar_t Host::getVms()
346 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
348 /* iterate for all virtual machines */
349 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
350 simgrid::surf::VMModel::ws_vms.begin();
351 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
353 simgrid::surf::VirtualMachine *ws_vm = &*iter;
354 if (this == ws_vm->p_subWs)
355 xbt_dynar_push(dyn, &ws_vm);
361 void Host::getParams(vm_params_t params)
366 void Host::setParams(vm_params_t params)
368 /* may check something here. */
375 simgrid::surf::signal<void(simgrid::surf::HostAction*, e_surf_action_state_t, e_surf_action_state_t)> HostAction::stateChangeCallbacks;
377 void HostAction::setState(e_surf_action_state_t state){
378 e_surf_action_state_t old = getState();
379 Action::setState(state);
380 stateChangeCallbacks(this, old, state);