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 Cpu *cpu = ws_vm->p_cpu;
57 int is_active = lmm_constraint_used(cpu->getModel()->getMaxminSystem(), cpu->getConstraint());
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);
76 Action *HostModel::executeParallelTask(int host_nb,
81 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
84 && (cost_or_zero(bytes_amount, 0) == 0.0)){
85 action = host_list[0]->pimpl_cpu->execute(flops_amount[0]);
86 } else if ((host_nb == 1)
87 && (cost_or_zero(flops_amount, 0) == 0.0)) {
88 action = surf_network_model->communicate(host_list[0]->pimpl_netcard,
89 host_list[0]->pimpl_netcard,
90 bytes_amount[0], rate);
91 } else if ((host_nb == 2)
92 && (cost_or_zero(flops_amount, 0) == 0.0)
93 && (cost_or_zero(flops_amount, 1) == 0.0)) {
97 for (i = 0; i < host_nb * host_nb; i++) {
98 if (cost_or_zero(bytes_amount, i) > 0.0) {
100 value = cost_or_zero(bytes_amount, i);
104 action = surf_network_model->communicate(host_list[0]->pimpl_netcard,
105 host_list[1]->pimpl_netcard,
109 THROW_UNIMPLEMENTED; /* This model does not implement parallel tasks for more than 2 hosts */
120 void Host::classInit()
122 if (!EXTENSION_ID.valid()) {
123 EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::surf::Host>();
127 Host::Host(simgrid::surf::HostModel *model, const char *name, xbt_dict_t props,
128 xbt_dynar_t storage, Cpu *cpu)
129 : Resource(model, name)
130 , PropertyHolder(props)
131 , p_storage(storage), p_cpu(cpu)
133 p_params.ramsize = 0;
136 Host::Host(simgrid::surf::HostModel *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
137 xbt_dynar_t storage, Cpu *cpu)
138 : Resource(model, name, constraint)
139 , PropertyHolder(props)
140 , p_storage(storage), p_cpu(cpu)
142 p_params.ramsize = 0;
145 /** @brief use destroy() instead of this destructor */
150 void Host::attach(simgrid::s4u::Host* host)
152 if (p_host != nullptr)
153 xbt_die("Already attached to host %s", host->name().c_str());
154 host->extension_set(this);
159 return p_cpu->isOn();
162 return p_cpu->isOff();
167 simgrid::s4u::Host::onStateChange(*this->p_host);
170 void Host::turnOff(){
173 simgrid::s4u::Host::onStateChange(*this->p_host);
177 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
179 simgrid::surf::Storage *st = NULL;
183 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
184 xbt_dynar_foreach(p_storage,cursor,mnt)
186 XBT_DEBUG("See '%s'",mnt.name);
187 if(!strcmp(mount,mnt.name)){
188 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
192 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
196 xbt_dict_t Host::getMountedStorageList()
200 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
201 char *storage_name = NULL;
203 xbt_dynar_foreach(p_storage,i,mnt){
204 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
205 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
210 xbt_dynar_t Host::getAttachedStorageList()
212 xbt_lib_cursor_t cursor;
215 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
216 xbt_lib_foreach(storage_lib, cursor, key, data) {
217 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
218 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));
219 if(!strcmp((const char*)storage->p_attach,this->getName())){
220 xbt_dynar_push_as(result, void *, (void*)storage->getName());
227 Action *Host::open(const char* fullpath) {
229 simgrid::surf::Storage *st = NULL;
232 size_t longest_prefix_length = 0;
234 char *file_mount_name = NULL;
235 char *mount_name = NULL;
237 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
238 xbt_dynar_foreach(p_storage,cursor,mnt)
240 XBT_DEBUG("See '%s'",mnt.name);
241 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
242 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
243 file_mount_name[strlen(mnt.name)] = '\0';
245 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
246 {/* The current mount name is found in the full path and is bigger than the previous*/
247 longest_prefix_length = strlen(mnt.name);
248 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
250 free(file_mount_name);
252 if(longest_prefix_length>0)
253 { /* Mount point found, split fullpath into mount_name and path+filename*/
254 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
255 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
256 strncpy(mount_name, fullpath, longest_prefix_length+1);
257 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
258 path[strlen(fullpath)-longest_prefix_length] = '\0';
259 mount_name[longest_prefix_length] = '\0';
262 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
264 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
265 Action *action = st->open((const char*)mount_name, (const char*)path);
267 free((char*)mount_name);
271 Action *Host::close(surf_file_t fd) {
272 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
273 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
274 return st->close(fd);
277 Action *Host::read(surf_file_t fd, sg_size_t size) {
278 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
279 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
280 return st->read(fd, size);
283 Action *Host::write(surf_file_t fd, sg_size_t size) {
284 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
285 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
286 return st->write(fd, size);
289 int Host::unlink(surf_file_t fd) {
291 XBT_WARN("No such file descriptor. Impossible to unlink");
295 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
296 /* Check if the file is on this storage */
297 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
298 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
302 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
303 st->m_usedSize -= fd->size;
305 // Remove the file from storage
306 xbt_dict_remove(st->p_content, fd->name);
316 sg_size_t Host::getSize(surf_file_t fd){
320 xbt_dynar_t Host::getInfo( surf_file_t fd)
322 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
323 sg_size_t *psize = xbt_new(sg_size_t, 1);
325 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
326 xbt_dynar_push_as(info, sg_size_t *, psize);
327 xbt_dynar_push_as(info, void *, fd->mount);
328 xbt_dynar_push_as(info, void *, (void *)st->getName());
329 xbt_dynar_push_as(info, void *, st->p_typeId);
330 xbt_dynar_push_as(info, void *, st->p_contentType);
335 sg_size_t Host::fileTell(surf_file_t fd){
336 return fd->current_position;
339 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
343 fd->current_position = offset;
346 fd->current_position += offset;
349 fd->current_position = fd->size + offset;
356 int Host::fileMove(surf_file_t fd, const char* fullpath){
357 /* Check if the new full path is on the same mount point */
358 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
359 sg_size_t *psize, *new_psize;
361 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
363 new_psize = xbt_new(sg_size_t, 1);
365 if (psize){// src file exists
366 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
367 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
368 strncpy(path, fullpath+strlen(fd->mount),
369 strlen(fullpath)-strlen(fd->mount)+1);
370 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
372 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
376 XBT_WARN("File %s doesn't exist", fd->name);
380 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
381 fullpath, fd->mount);
386 xbt_dynar_t Host::getVms()
388 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
390 /* iterate for all virtual machines */
391 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
392 simgrid::surf::VMModel::ws_vms.begin();
393 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
395 simgrid::surf::VirtualMachine *ws_vm = &*iter;
396 if (this == ws_vm->p_hostPM->extension(simgrid::surf::Host::EXTENSION_ID))
397 xbt_dynar_push(dyn, &ws_vm);
403 void Host::getParams(vm_params_t params)
408 void Host::setParams(vm_params_t params)
410 /* may check something here. */