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 , 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;
111 surf_callback_emit(hostDestructedCallbacks, this);
114 void Host::attach(simgrid::Host* host)
116 if (p_host != nullptr)
117 xbt_die("Already attached to host %s", host->id().c_str());
118 host->set_facet(this);
120 surf_callback_emit(hostCreatedCallbacks, this);
123 void Host::setState(e_surf_resource_state_t state){
124 e_surf_resource_state_t old = Resource::getState();
125 Resource::setState(state);
126 surf_callback_emit(hostStateChangedCallbacks, this, old, state);
127 p_cpu->setState(state);
130 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
132 simgrid::surf::Storage *st = NULL;
136 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
137 xbt_dynar_foreach(p_storage,cursor,mnt)
139 XBT_DEBUG("See '%s'",mnt.name);
140 if(!strcmp(mount,mnt.name)){
141 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
145 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
149 xbt_dict_t Host::getMountedStorageList()
153 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
154 char *storage_name = NULL;
156 xbt_dynar_foreach(p_storage,i,mnt){
157 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
158 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
163 xbt_dynar_t Host::getAttachedStorageList()
165 xbt_lib_cursor_t cursor;
168 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
169 xbt_lib_foreach(storage_lib, cursor, key, data) {
170 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
171 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));
172 if(!strcmp((const char*)storage->p_attach,this->getName())){
173 xbt_dynar_push_as(result, void *, (void*)storage->getName());
180 Action *Host::open(const char* fullpath) {
182 simgrid::surf::Storage *st = NULL;
185 size_t longest_prefix_length = 0;
187 char *file_mount_name = NULL;
188 char *mount_name = NULL;
190 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
191 xbt_dynar_foreach(p_storage,cursor,mnt)
193 XBT_DEBUG("See '%s'",mnt.name);
194 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
195 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
196 file_mount_name[strlen(mnt.name)] = '\0';
198 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
199 {/* The current mount name is found in the full path and is bigger than the previous*/
200 longest_prefix_length = strlen(mnt.name);
201 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
203 free(file_mount_name);
205 if(longest_prefix_length>0)
206 { /* Mount point found, split fullpath into mount_name and path+filename*/
207 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
208 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
209 strncpy(mount_name, fullpath, longest_prefix_length+1);
210 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
211 path[strlen(fullpath)-longest_prefix_length] = '\0';
212 mount_name[longest_prefix_length] = '\0';
215 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
217 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
218 Action *action = st->open((const char*)mount_name, (const char*)path);
220 free((char*)mount_name);
224 Action *Host::close(surf_file_t fd) {
225 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
226 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
227 return st->close(fd);
230 Action *Host::read(surf_file_t fd, sg_size_t size) {
231 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
232 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
233 return st->read(fd, size);
236 Action *Host::write(surf_file_t fd, sg_size_t size) {
237 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
238 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
239 return st->write(fd, size);
242 int Host::unlink(surf_file_t fd) {
244 XBT_WARN("No such file descriptor. Impossible to unlink");
248 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
249 /* Check if the file is on this storage */
250 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
251 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
255 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
256 st->m_usedSize -= fd->size;
258 // Remove the file from storage
259 xbt_dict_remove(st->p_content, fd->name);
269 sg_size_t Host::getSize(surf_file_t fd){
273 xbt_dynar_t Host::getInfo( surf_file_t fd)
275 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
276 sg_size_t *psize = xbt_new(sg_size_t, 1);
278 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
279 xbt_dynar_push_as(info, sg_size_t *, psize);
280 xbt_dynar_push_as(info, void *, fd->mount);
281 xbt_dynar_push_as(info, void *, (void *)st->getName());
282 xbt_dynar_push_as(info, void *, st->p_typeId);
283 xbt_dynar_push_as(info, void *, st->p_contentType);
288 sg_size_t Host::fileTell(surf_file_t fd){
289 return fd->current_position;
292 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
296 fd->current_position = offset;
299 fd->current_position += offset;
302 fd->current_position = fd->size + offset;
309 int Host::fileMove(surf_file_t fd, const char* fullpath){
310 /* Check if the new full path is on the same mount point */
311 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
312 sg_size_t *psize, *new_psize;
314 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
316 new_psize = xbt_new(sg_size_t, 1);
318 if (psize){// src file exists
319 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
320 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
321 strncpy(path, fullpath+strlen(fd->mount),
322 strlen(fullpath)-strlen(fd->mount)+1);
323 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
325 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
329 XBT_WARN("File %s doesn't exist", fd->name);
333 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
334 fullpath, fd->mount);
339 xbt_dynar_t Host::getVms()
341 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
343 /* iterate for all virtual machines */
344 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
345 simgrid::surf::VMModel::ws_vms.begin();
346 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
348 simgrid::surf::VirtualMachine *ws_vm = &*iter;
349 if (this == ws_vm->p_subWs)
350 xbt_dynar_push(dyn, &ws_vm);
356 void Host::getParams(vm_params_t params)
361 void Host::setParams(vm_params_t params)
363 /* may check something here. */
371 void HostAction::setState(e_surf_action_state_t state){
372 e_surf_action_state_t old = getState();
373 Action::setState(state);
374 surf_callback_emit(hostActionStateChangedCallbacks, this, old, state);