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 "src/simix/smx_private.h"
10 #include "cpu_cas01.hpp"
11 #include "simgrid/sg_config.h"
13 #include "network_interface.hpp"
14 #include "virtual_machine.hpp"
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_host, surf,
17 "Logging specific to the SURF host module");
19 simgrid::surf::HostModel *surf_host_model = NULL;
21 void host_add_traces(){
22 surf_host_model->addTraces();
32 surf_callback(void, simgrid::surf::Host*) hostCreatedCallbacks;
33 surf_callback(void, simgrid::surf::Host*) hostDestructedCallbacks;
34 surf_callback(void, simgrid::surf::Host*, e_surf_resource_state_t, e_surf_resource_state_t) hostStateChangedCallbacks;
35 surf_callback(void, simgrid::surf::HostAction*, e_surf_action_state_t, e_surf_action_state_t) hostActionStateChangedCallbacks;
41 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
42 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
43 * active task, the dummy CPU action must be deactivated, so that the VM does
44 * not get any CPU share in the PM layer. */
45 void HostModel::adjustWeightOfDummyCpuActions()
47 /* iterate for all virtual machines */
48 for (VMModel::vm_list_t::iterator iter =
49 VMModel::ws_vms.begin();
50 iter != VMModel::ws_vms.end(); ++iter) {
52 VirtualMachine *ws_vm = &*iter;
53 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
54 xbt_assert(cpu_cas01, "cpu-less host");
56 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
57 // int is_active_old = constraint_is_active(cpu_cas01);
60 /* some tasks exist on this VM */
61 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
63 /* FIXME: we should use lmm_update_variable_weight() ? */
64 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
65 ws_vm->p_action->setPriority(1);
68 /* no task exits on this VM */
69 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
71 ws_vm->p_action->setPriority(0);
79 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props,
80 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
81 : Resource(model, name, props)
82 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
87 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
88 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
89 : Resource(model, name, props, constraint)
90 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
96 surf_callback_emit(hostDestructedCallbacks, this);
99 void Host::setState(e_surf_resource_state_t state){
100 e_surf_resource_state_t old = Resource::getState();
101 Resource::setState(state);
102 surf_callback_emit(hostStateChangedCallbacks, this, old, state);
103 p_cpu->setState(state);
106 xbt_dict_t Host::getProperties()
108 return p_cpu->getProperties();
111 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
113 simgrid::surf::Storage *st = NULL;
117 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
118 xbt_dynar_foreach(p_storage,cursor,mnt)
120 XBT_DEBUG("See '%s'",mnt.name);
121 if(!strcmp(mount,mnt.name)){
122 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
126 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
130 xbt_dict_t Host::getMountedStorageList()
134 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
135 char *storage_name = NULL;
137 xbt_dynar_foreach(p_storage,i,mnt){
138 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
139 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
144 xbt_dynar_t Host::getAttachedStorageList()
146 xbt_lib_cursor_t cursor;
149 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
150 xbt_lib_foreach(storage_lib, cursor, key, data) {
151 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
152 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));
153 if(!strcmp((const char*)storage->p_attach,this->getName())){
154 xbt_dynar_push_as(result, void *, (void*)storage->getName());
161 Action *Host::open(const char* fullpath) {
163 simgrid::surf::Storage *st = NULL;
166 size_t longest_prefix_length = 0;
168 char *file_mount_name = NULL;
169 char *mount_name = NULL;
171 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
172 xbt_dynar_foreach(p_storage,cursor,mnt)
174 XBT_DEBUG("See '%s'",mnt.name);
175 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
176 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
177 file_mount_name[strlen(mnt.name)] = '\0';
179 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
180 {/* The current mount name is found in the full path and is bigger than the previous*/
181 longest_prefix_length = strlen(mnt.name);
182 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
184 free(file_mount_name);
186 if(longest_prefix_length>0)
187 { /* Mount point found, split fullpath into mount_name and path+filename*/
188 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
189 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
190 strncpy(mount_name, fullpath, longest_prefix_length+1);
191 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
192 path[strlen(fullpath)-longest_prefix_length] = '\0';
193 mount_name[longest_prefix_length] = '\0';
196 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
198 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
199 Action *action = st->open((const char*)mount_name, (const char*)path);
201 free((char*)mount_name);
205 Action *Host::close(surf_file_t fd) {
206 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
207 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
208 return st->close(fd);
211 Action *Host::read(surf_file_t fd, sg_size_t size) {
212 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
213 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
214 return st->read(fd, size);
217 Action *Host::write(surf_file_t fd, sg_size_t size) {
218 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
219 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
220 return st->write(fd, size);
223 int Host::unlink(surf_file_t fd) {
225 XBT_WARN("No such file descriptor. Impossible to unlink");
229 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
230 /* Check if the file is on this storage */
231 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
232 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
236 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
237 st->m_usedSize -= fd->size;
239 // Remove the file from storage
240 xbt_dict_remove(st->p_content, fd->name);
250 sg_size_t Host::getSize(surf_file_t fd){
254 xbt_dynar_t Host::getInfo( surf_file_t fd)
256 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
257 sg_size_t *psize = xbt_new(sg_size_t, 1);
259 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
260 xbt_dynar_push_as(info, sg_size_t *, psize);
261 xbt_dynar_push_as(info, void *, fd->mount);
262 xbt_dynar_push_as(info, void *, (void *)st->getName());
263 xbt_dynar_push_as(info, void *, st->p_typeId);
264 xbt_dynar_push_as(info, void *, st->p_contentType);
269 sg_size_t Host::fileTell(surf_file_t fd){
270 return fd->current_position;
273 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
277 fd->current_position = offset;
280 fd->current_position += offset;
283 fd->current_position = fd->size + offset;
290 int Host::fileMove(surf_file_t fd, const char* fullpath){
291 /* Check if the new full path is on the same mount point */
292 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
293 sg_size_t *psize, *new_psize;
295 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
297 new_psize = xbt_new(sg_size_t, 1);
299 if (psize){// src file exists
300 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
301 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
302 strncpy(path, fullpath+strlen(fd->mount),
303 strlen(fullpath)-strlen(fd->mount)+1);
304 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
306 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
310 XBT_WARN("File %s doesn't exist", fd->name);
314 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
315 fullpath, fd->mount);
320 xbt_dynar_t Host::getVms()
322 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
324 /* iterate for all virtual machines */
325 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
326 simgrid::surf::VMModel::ws_vms.begin();
327 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
329 simgrid::surf::VirtualMachine *ws_vm = &*iter;
330 if (this == ws_vm->p_subWs)
331 xbt_dynar_push(dyn, &ws_vm);
337 void Host::getParams(vm_params_t params)
342 void Host::setParams(vm_params_t params)
344 /* may check something here. */
352 void HostAction::setState(e_surf_action_state_t state){
353 e_surf_action_state_t old = getState();
354 Action::setState(state);
355 surf_callback_emit(hostActionStateChangedCallbacks, this, old, state);