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/s4u/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;
30 simgrid::xbt::Extension<simgrid::s4u::Host, Host> Host::EXTENSION_ID;
35 Host *HostModel::createHost(const char *name,NetCard *netElm, Cpu *cpu, xbt_dict_t props){
36 xbt_dynar_t storageList = (xbt_dynar_t)xbt_lib_get_or_null(storage_lib, name, ROUTING_STORAGE_HOST_LEVEL);
38 Host *host = new simgrid::surf::Host(surf_host_model, name, props, storageList, cpu);
39 XBT_DEBUG("Create host %s with %ld mounted disks", name, xbt_dynar_length(host->p_storage));
43 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
44 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
45 * active task, the dummy CPU action must be deactivated, so that the VM does
46 * not get any CPU share in the PM layer. */
47 void HostModel::adjustWeightOfDummyCpuActions()
49 /* iterate for all virtual machines */
50 for (VMModel::vm_list_t::iterator iter =
51 VMModel::ws_vms.begin();
52 iter != VMModel::ws_vms.end(); ++iter) {
54 VirtualMachine *ws_vm = &*iter;
55 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
56 xbt_assert(cpu_cas01, "cpu-less host");
58 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
59 // int is_active_old = constraint_is_active(cpu_cas01);
62 /* some tasks exist on this VM */
63 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
65 /* FIXME: we should use lmm_update_variable_weight() ? */
66 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
67 ws_vm->p_action->setPriority(1);
70 /* no task exits on this VM */
71 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
73 ws_vm->p_action->setPriority(0);
83 void Host::classInit()
85 if (!EXTENSION_ID.valid()) {
86 EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::surf::Host>();
90 Host::Host(simgrid::surf::HostModel *model, const char *name, xbt_dict_t props,
91 xbt_dynar_t storage, Cpu *cpu)
92 : Resource(model, name)
93 , PropertyHolder(props)
94 , p_storage(storage), p_cpu(cpu)
99 Host::Host(simgrid::surf::HostModel *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
100 xbt_dynar_t storage, Cpu *cpu)
101 : Resource(model, name, constraint)
102 , PropertyHolder(props)
103 , p_storage(storage), p_cpu(cpu)
105 p_params.ramsize = 0;
108 /** @brief use destroy() instead of this destructor */
113 void Host::attach(simgrid::s4u::Host* host)
115 if (p_host != nullptr)
116 xbt_die("Already attached to host %s", host->name().c_str());
117 host->extension_set(this);
122 return p_cpu->isOn();
125 return p_cpu->isOff();
130 simgrid::s4u::Host::onStateChange(*this->p_host);
133 void Host::turnOff(){
136 simgrid::s4u::Host::onStateChange(*this->p_host);
140 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
142 simgrid::surf::Storage *st = NULL;
146 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
147 xbt_dynar_foreach(p_storage,cursor,mnt)
149 XBT_DEBUG("See '%s'",mnt.name);
150 if(!strcmp(mount,mnt.name)){
151 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
155 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
159 xbt_dict_t Host::getMountedStorageList()
163 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
164 char *storage_name = NULL;
166 xbt_dynar_foreach(p_storage,i,mnt){
167 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
168 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
173 xbt_dynar_t Host::getAttachedStorageList()
175 xbt_lib_cursor_t cursor;
178 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
179 xbt_lib_foreach(storage_lib, cursor, key, data) {
180 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
181 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));
182 if(!strcmp((const char*)storage->p_attach,this->getName())){
183 xbt_dynar_push_as(result, void *, (void*)storage->getName());
190 Action *Host::open(const char* fullpath) {
192 simgrid::surf::Storage *st = NULL;
195 size_t longest_prefix_length = 0;
197 char *file_mount_name = NULL;
198 char *mount_name = NULL;
200 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
201 xbt_dynar_foreach(p_storage,cursor,mnt)
203 XBT_DEBUG("See '%s'",mnt.name);
204 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
205 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
206 file_mount_name[strlen(mnt.name)] = '\0';
208 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
209 {/* The current mount name is found in the full path and is bigger than the previous*/
210 longest_prefix_length = strlen(mnt.name);
211 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
213 free(file_mount_name);
215 if(longest_prefix_length>0)
216 { /* Mount point found, split fullpath into mount_name and path+filename*/
217 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
218 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
219 strncpy(mount_name, fullpath, longest_prefix_length+1);
220 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
221 path[strlen(fullpath)-longest_prefix_length] = '\0';
222 mount_name[longest_prefix_length] = '\0';
225 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
227 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
228 Action *action = st->open((const char*)mount_name, (const char*)path);
230 free((char*)mount_name);
234 Action *Host::close(surf_file_t fd) {
235 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
236 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
237 return st->close(fd);
240 Action *Host::read(surf_file_t fd, sg_size_t size) {
241 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
242 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
243 return st->read(fd, size);
246 Action *Host::write(surf_file_t fd, sg_size_t size) {
247 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
248 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
249 return st->write(fd, size);
252 int Host::unlink(surf_file_t fd) {
254 XBT_WARN("No such file descriptor. Impossible to unlink");
258 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
259 /* Check if the file is on this storage */
260 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
261 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
265 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
266 st->m_usedSize -= fd->size;
268 // Remove the file from storage
269 xbt_dict_remove(st->p_content, fd->name);
279 sg_size_t Host::getSize(surf_file_t fd){
283 xbt_dynar_t Host::getInfo( surf_file_t fd)
285 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
286 sg_size_t *psize = xbt_new(sg_size_t, 1);
288 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
289 xbt_dynar_push_as(info, sg_size_t *, psize);
290 xbt_dynar_push_as(info, void *, fd->mount);
291 xbt_dynar_push_as(info, void *, (void *)st->getName());
292 xbt_dynar_push_as(info, void *, st->p_typeId);
293 xbt_dynar_push_as(info, void *, st->p_contentType);
298 sg_size_t Host::fileTell(surf_file_t fd){
299 return fd->current_position;
302 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
306 fd->current_position = offset;
309 fd->current_position += offset;
312 fd->current_position = fd->size + offset;
319 int Host::fileMove(surf_file_t fd, const char* fullpath){
320 /* Check if the new full path is on the same mount point */
321 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
322 sg_size_t *psize, *new_psize;
324 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
326 new_psize = xbt_new(sg_size_t, 1);
328 if (psize){// src file exists
329 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
330 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
331 strncpy(path, fullpath+strlen(fd->mount),
332 strlen(fullpath)-strlen(fd->mount)+1);
333 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
335 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
339 XBT_WARN("File %s doesn't exist", fd->name);
343 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
344 fullpath, fd->mount);
349 xbt_dynar_t Host::getVms()
351 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
353 /* iterate for all virtual machines */
354 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
355 simgrid::surf::VMModel::ws_vms.begin();
356 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
358 simgrid::surf::VirtualMachine *ws_vm = &*iter;
359 if (this == ws_vm->p_hostPM->extension(simgrid::surf::Host::EXTENSION_ID))
360 xbt_dynar_push(dyn, &ws_vm);
366 void Host::getParams(vm_params_t params)
371 void Host::setParams(vm_params_t params)
373 /* may check something here. */