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 =
35 simgrid::Host::extension_create<simgrid::surf::Host>([](void *h) {
36 static_cast<simgrid::surf::Host*>(h)->destroy();
42 Host *HostModel::createHost(const char *name,NetCard *netElm, Cpu *cpu, xbt_dict_t props){
43 xbt_dynar_t storageList = (xbt_dynar_t)xbt_lib_get_or_null(storage_lib, name, ROUTING_STORAGE_HOST_LEVEL);
45 Host *host = new simgrid::surf::Host(surf_host_model, name, props,
46 storageList, netElm, cpu);
47 XBT_DEBUG("Create host %s with %ld mounted disks", name, xbt_dynar_length(host->p_storage));
51 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
52 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
53 * active task, the dummy CPU action must be deactivated, so that the VM does
54 * not get any CPU share in the PM layer. */
55 void HostModel::adjustWeightOfDummyCpuActions()
57 /* iterate for all virtual machines */
58 for (VMModel::vm_list_t::iterator iter =
59 VMModel::ws_vms.begin();
60 iter != VMModel::ws_vms.end(); ++iter) {
62 VirtualMachine *ws_vm = &*iter;
63 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
64 xbt_assert(cpu_cas01, "cpu-less host");
66 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
67 // int is_active_old = constraint_is_active(cpu_cas01);
70 /* some tasks exist on this VM */
71 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
73 /* FIXME: we should use lmm_update_variable_weight() ? */
74 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
75 ws_vm->p_action->setPriority(1);
78 /* no task exits on this VM */
79 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
81 ws_vm->p_action->setPriority(0);
89 simgrid::surf::signal<void(simgrid::surf::Host*)> Host::onCreation;
90 simgrid::surf::signal<void(simgrid::surf::Host*)> Host::onDestruction;
91 simgrid::surf::signal<void(simgrid::surf::Host*, e_surf_resource_state_t, e_surf_resource_state_t)> Host::onStateChange;
93 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props,
94 xbt_dynar_t storage, NetCard *netElm, Cpu *cpu)
95 : Resource(model, name)
96 , PropertyHolder(props)
97 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
102 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
103 xbt_dynar_t storage, NetCard *netElm, Cpu *cpu)
104 : Resource(model, name, constraint)
105 , PropertyHolder(props)
106 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
108 p_params.ramsize = 0;
111 /** @brief use destroy() instead of this destructor */
114 xbt_assert(currentlyDestroying_, "Don't delete Hosts directly. Call destroy() instead.");
116 // FIXME: VM plays strange games, leading to segfaults if I do the expected thing of next line
120 /** @brief Fire the require callbacks and destroy the object
122 * Don't delete directly an Host, call h->destroy() instead.
126 if (!currentlyDestroying_) {
127 currentlyDestroying_ = true;
133 void Host::attach(simgrid::Host* host)
135 if (p_host != nullptr)
136 xbt_die("Already attached to host %s", host->getName().c_str());
137 host->extension_set(this);
142 e_surf_resource_state_t Host::getState() {
143 return p_cpu->getState();
145 void Host::setState(e_surf_resource_state_t state){
146 e_surf_resource_state_t old = Resource::getState();
147 Resource::setState(state);
148 onStateChange(this, old, state);
149 p_cpu->setState(state);
153 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
155 simgrid::surf::Storage *st = NULL;
159 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
160 xbt_dynar_foreach(p_storage,cursor,mnt)
162 XBT_DEBUG("See '%s'",mnt.name);
163 if(!strcmp(mount,mnt.name)){
164 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
168 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
172 xbt_dict_t Host::getMountedStorageList()
176 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
177 char *storage_name = NULL;
179 xbt_dynar_foreach(p_storage,i,mnt){
180 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
181 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
186 xbt_dynar_t Host::getAttachedStorageList()
188 xbt_lib_cursor_t cursor;
191 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
192 xbt_lib_foreach(storage_lib, cursor, key, data) {
193 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
194 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));
195 if(!strcmp((const char*)storage->p_attach,this->getName())){
196 xbt_dynar_push_as(result, void *, (void*)storage->getName());
203 Action *Host::open(const char* fullpath) {
205 simgrid::surf::Storage *st = NULL;
208 size_t longest_prefix_length = 0;
210 char *file_mount_name = NULL;
211 char *mount_name = NULL;
213 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
214 xbt_dynar_foreach(p_storage,cursor,mnt)
216 XBT_DEBUG("See '%s'",mnt.name);
217 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
218 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
219 file_mount_name[strlen(mnt.name)] = '\0';
221 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
222 {/* The current mount name is found in the full path and is bigger than the previous*/
223 longest_prefix_length = strlen(mnt.name);
224 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
226 free(file_mount_name);
228 if(longest_prefix_length>0)
229 { /* Mount point found, split fullpath into mount_name and path+filename*/
230 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
231 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
232 strncpy(mount_name, fullpath, longest_prefix_length+1);
233 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
234 path[strlen(fullpath)-longest_prefix_length] = '\0';
235 mount_name[longest_prefix_length] = '\0';
238 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
240 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
241 Action *action = st->open((const char*)mount_name, (const char*)path);
243 free((char*)mount_name);
247 Action *Host::close(surf_file_t fd) {
248 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
249 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
250 return st->close(fd);
253 Action *Host::read(surf_file_t fd, sg_size_t size) {
254 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
255 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
256 return st->read(fd, size);
259 Action *Host::write(surf_file_t fd, sg_size_t size) {
260 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
261 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
262 return st->write(fd, size);
265 int Host::unlink(surf_file_t fd) {
267 XBT_WARN("No such file descriptor. Impossible to unlink");
271 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
272 /* Check if the file is on this storage */
273 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
274 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
278 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
279 st->m_usedSize -= fd->size;
281 // Remove the file from storage
282 xbt_dict_remove(st->p_content, fd->name);
292 sg_size_t Host::getSize(surf_file_t fd){
296 xbt_dynar_t Host::getInfo( surf_file_t fd)
298 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
299 sg_size_t *psize = xbt_new(sg_size_t, 1);
301 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
302 xbt_dynar_push_as(info, sg_size_t *, psize);
303 xbt_dynar_push_as(info, void *, fd->mount);
304 xbt_dynar_push_as(info, void *, (void *)st->getName());
305 xbt_dynar_push_as(info, void *, st->p_typeId);
306 xbt_dynar_push_as(info, void *, st->p_contentType);
311 sg_size_t Host::fileTell(surf_file_t fd){
312 return fd->current_position;
315 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
319 fd->current_position = offset;
322 fd->current_position += offset;
325 fd->current_position = fd->size + offset;
332 int Host::fileMove(surf_file_t fd, const char* fullpath){
333 /* Check if the new full path is on the same mount point */
334 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
335 sg_size_t *psize, *new_psize;
337 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
339 new_psize = xbt_new(sg_size_t, 1);
341 if (psize){// src file exists
342 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
343 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
344 strncpy(path, fullpath+strlen(fd->mount),
345 strlen(fullpath)-strlen(fd->mount)+1);
346 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
348 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
352 XBT_WARN("File %s doesn't exist", fd->name);
356 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
357 fullpath, fd->mount);
362 xbt_dynar_t Host::getVms()
364 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
366 /* iterate for all virtual machines */
367 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
368 simgrid::surf::VMModel::ws_vms.begin();
369 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
371 simgrid::surf::VirtualMachine *ws_vm = &*iter;
372 if (this == ws_vm->p_hostPM->extension(simgrid::surf::Host::EXTENSION_ID))
373 xbt_dynar_push(dyn, &ws_vm);
379 void Host::getParams(vm_params_t params)
384 void Host::setParams(vm_params_t params)
386 /* may check something here. */