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 simgrid::surf::signal<void(simgrid::surf::Host*)> hostCreatedCallbacks;
37 simgrid::surf::signal<void(simgrid::surf::Host*)> hostDestructedCallbacks;
38 simgrid::surf::signal<void(simgrid::surf::Host*, e_surf_resource_state_t, e_surf_resource_state_t)> hostStateChangedCallbacks;
39 simgrid::surf::signal<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 , PropertyHolder(props)
96 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
101 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
102 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
103 : Resource(model, name, constraint)
104 , PropertyHolder(props)
105 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
107 p_params.ramsize = 0;
112 hostDestructedCallbacks(this);
121 void Host::attach(simgrid::Host* host)
123 if (p_host != nullptr)
124 xbt_die("Already attached to host %s", host->id().c_str());
125 host->set_facet(this);
127 hostCreatedCallbacks(this);
130 void Host::setState(e_surf_resource_state_t state){
131 e_surf_resource_state_t old = Resource::getState();
132 Resource::setState(state);
133 hostStateChangedCallbacks(this, old, state);
134 p_cpu->setState(state);
137 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
139 simgrid::surf::Storage *st = NULL;
143 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
144 xbt_dynar_foreach(p_storage,cursor,mnt)
146 XBT_DEBUG("See '%s'",mnt.name);
147 if(!strcmp(mount,mnt.name)){
148 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
152 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
156 xbt_dict_t Host::getMountedStorageList()
160 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
161 char *storage_name = NULL;
163 xbt_dynar_foreach(p_storage,i,mnt){
164 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
165 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
170 xbt_dynar_t Host::getAttachedStorageList()
172 xbt_lib_cursor_t cursor;
175 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
176 xbt_lib_foreach(storage_lib, cursor, key, data) {
177 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
178 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));
179 if(!strcmp((const char*)storage->p_attach,this->getName())){
180 xbt_dynar_push_as(result, void *, (void*)storage->getName());
187 Action *Host::open(const char* fullpath) {
189 simgrid::surf::Storage *st = NULL;
192 size_t longest_prefix_length = 0;
194 char *file_mount_name = NULL;
195 char *mount_name = NULL;
197 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
198 xbt_dynar_foreach(p_storage,cursor,mnt)
200 XBT_DEBUG("See '%s'",mnt.name);
201 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
202 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
203 file_mount_name[strlen(mnt.name)] = '\0';
205 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
206 {/* The current mount name is found in the full path and is bigger than the previous*/
207 longest_prefix_length = strlen(mnt.name);
208 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
210 free(file_mount_name);
212 if(longest_prefix_length>0)
213 { /* Mount point found, split fullpath into mount_name and path+filename*/
214 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
215 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
216 strncpy(mount_name, fullpath, longest_prefix_length+1);
217 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
218 path[strlen(fullpath)-longest_prefix_length] = '\0';
219 mount_name[longest_prefix_length] = '\0';
222 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
224 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
225 Action *action = st->open((const char*)mount_name, (const char*)path);
227 free((char*)mount_name);
231 Action *Host::close(surf_file_t fd) {
232 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
233 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
234 return st->close(fd);
237 Action *Host::read(surf_file_t fd, sg_size_t size) {
238 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
239 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
240 return st->read(fd, size);
243 Action *Host::write(surf_file_t fd, sg_size_t size) {
244 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
245 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
246 return st->write(fd, size);
249 int Host::unlink(surf_file_t fd) {
251 XBT_WARN("No such file descriptor. Impossible to unlink");
255 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
256 /* Check if the file is on this storage */
257 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
258 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
262 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
263 st->m_usedSize -= fd->size;
265 // Remove the file from storage
266 xbt_dict_remove(st->p_content, fd->name);
276 sg_size_t Host::getSize(surf_file_t fd){
280 xbt_dynar_t Host::getInfo( surf_file_t fd)
282 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
283 sg_size_t *psize = xbt_new(sg_size_t, 1);
285 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
286 xbt_dynar_push_as(info, sg_size_t *, psize);
287 xbt_dynar_push_as(info, void *, fd->mount);
288 xbt_dynar_push_as(info, void *, (void *)st->getName());
289 xbt_dynar_push_as(info, void *, st->p_typeId);
290 xbt_dynar_push_as(info, void *, st->p_contentType);
295 sg_size_t Host::fileTell(surf_file_t fd){
296 return fd->current_position;
299 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
303 fd->current_position = offset;
306 fd->current_position += offset;
309 fd->current_position = fd->size + offset;
316 int Host::fileMove(surf_file_t fd, const char* fullpath){
317 /* Check if the new full path is on the same mount point */
318 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
319 sg_size_t *psize, *new_psize;
321 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
323 new_psize = xbt_new(sg_size_t, 1);
325 if (psize){// src file exists
326 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
327 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
328 strncpy(path, fullpath+strlen(fd->mount),
329 strlen(fullpath)-strlen(fd->mount)+1);
330 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
332 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
336 XBT_WARN("File %s doesn't exist", fd->name);
340 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
341 fullpath, fd->mount);
346 xbt_dynar_t Host::getVms()
348 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
350 /* iterate for all virtual machines */
351 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
352 simgrid::surf::VMModel::ws_vms.begin();
353 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
355 simgrid::surf::VirtualMachine *ws_vm = &*iter;
356 if (this == ws_vm->p_subWs)
357 xbt_dynar_push(dyn, &ws_vm);
363 void Host::getParams(vm_params_t params)
368 void Host::setParams(vm_params_t params)
370 /* may check something here. */
378 void HostAction::setState(e_surf_action_state_t state){
379 e_surf_action_state_t old = getState();
380 Action::setState(state);
381 hostActionStateChangedCallbacks(this, old, state);