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;
39 Host *HostModel::createHost(const char *name,NetCard *netElm, Cpu *cpu, xbt_dict_t props){
40 xbt_dynar_t storageList = (xbt_dynar_t)xbt_lib_get_or_null(storage_lib, name, ROUTING_STORAGE_HOST_LEVEL);
42 Host *host = new simgrid::surf::Host(surf_host_model, name, props, storageList, cpu);
43 XBT_DEBUG("Create host %s with %ld mounted disks", name, xbt_dynar_length(host->p_storage));
47 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
48 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
49 * active task, the dummy CPU action must be deactivated, so that the VM does
50 * not get any CPU share in the PM layer. */
51 void HostModel::adjustWeightOfDummyCpuActions()
53 /* iterate for all virtual machines */
54 for (VMModel::vm_list_t::iterator iter =
55 VMModel::ws_vms.begin();
56 iter != VMModel::ws_vms.end(); ++iter) {
58 VirtualMachine *ws_vm = &*iter;
59 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
60 xbt_assert(cpu_cas01, "cpu-less host");
62 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
63 // int is_active_old = constraint_is_active(cpu_cas01);
66 /* some tasks exist on this VM */
67 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
69 /* FIXME: we should use lmm_update_variable_weight() ? */
70 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
71 ws_vm->p_action->setPriority(1);
74 /* no task exits on this VM */
75 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
77 ws_vm->p_action->setPriority(0);
87 void Host::classInit()
89 if (!EXTENSION_ID.valid()) {
90 EXTENSION_ID = simgrid::Host::extension_create<simgrid::surf::Host>();
94 Host::Host(simgrid::surf::HostModel *model, const char *name, xbt_dict_t props,
95 xbt_dynar_t storage, Cpu *cpu)
96 : Resource(model, name)
97 , PropertyHolder(props)
98 , p_storage(storage), p_cpu(cpu)
100 p_params.ramsize = 0;
103 Host::Host(simgrid::surf::HostModel *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
104 xbt_dynar_t storage, Cpu *cpu)
105 : Resource(model, name, constraint)
106 , PropertyHolder(props)
107 , p_storage(storage), p_cpu(cpu)
109 p_params.ramsize = 0;
112 /** @brief use destroy() instead of this destructor */
117 void Host::attach(simgrid::Host* host)
119 if (p_host != nullptr)
120 xbt_die("Already attached to host %s", host->getName().c_str());
121 host->extension_set(this);
126 return p_cpu->isOn();
129 return p_cpu->isOff();
134 simgrid::Host::onStateChange(*this->p_host);
137 void Host::turnOff(){
140 simgrid::Host::onStateChange(*this->p_host);
144 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
146 simgrid::surf::Storage *st = NULL;
150 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
151 xbt_dynar_foreach(p_storage,cursor,mnt)
153 XBT_DEBUG("See '%s'",mnt.name);
154 if(!strcmp(mount,mnt.name)){
155 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
159 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
163 xbt_dict_t Host::getMountedStorageList()
167 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
168 char *storage_name = NULL;
170 xbt_dynar_foreach(p_storage,i,mnt){
171 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
172 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
177 xbt_dynar_t Host::getAttachedStorageList()
179 xbt_lib_cursor_t cursor;
182 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
183 xbt_lib_foreach(storage_lib, cursor, key, data) {
184 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
185 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));
186 if(!strcmp((const char*)storage->p_attach,this->getName())){
187 xbt_dynar_push_as(result, void *, (void*)storage->getName());
194 Action *Host::open(const char* fullpath) {
196 simgrid::surf::Storage *st = NULL;
199 size_t longest_prefix_length = 0;
201 char *file_mount_name = NULL;
202 char *mount_name = NULL;
204 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
205 xbt_dynar_foreach(p_storage,cursor,mnt)
207 XBT_DEBUG("See '%s'",mnt.name);
208 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
209 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
210 file_mount_name[strlen(mnt.name)] = '\0';
212 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
213 {/* The current mount name is found in the full path and is bigger than the previous*/
214 longest_prefix_length = strlen(mnt.name);
215 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
217 free(file_mount_name);
219 if(longest_prefix_length>0)
220 { /* Mount point found, split fullpath into mount_name and path+filename*/
221 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
222 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
223 strncpy(mount_name, fullpath, longest_prefix_length+1);
224 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
225 path[strlen(fullpath)-longest_prefix_length] = '\0';
226 mount_name[longest_prefix_length] = '\0';
229 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
231 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
232 Action *action = st->open((const char*)mount_name, (const char*)path);
234 free((char*)mount_name);
238 Action *Host::close(surf_file_t fd) {
239 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
240 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
241 return st->close(fd);
244 Action *Host::read(surf_file_t fd, sg_size_t size) {
245 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
246 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
247 return st->read(fd, size);
250 Action *Host::write(surf_file_t fd, sg_size_t size) {
251 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
252 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
253 return st->write(fd, size);
256 int Host::unlink(surf_file_t fd) {
258 XBT_WARN("No such file descriptor. Impossible to unlink");
262 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
263 /* Check if the file is on this storage */
264 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
265 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
269 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
270 st->m_usedSize -= fd->size;
272 // Remove the file from storage
273 xbt_dict_remove(st->p_content, fd->name);
283 sg_size_t Host::getSize(surf_file_t fd){
287 xbt_dynar_t Host::getInfo( surf_file_t fd)
289 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
290 sg_size_t *psize = xbt_new(sg_size_t, 1);
292 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
293 xbt_dynar_push_as(info, sg_size_t *, psize);
294 xbt_dynar_push_as(info, void *, fd->mount);
295 xbt_dynar_push_as(info, void *, (void *)st->getName());
296 xbt_dynar_push_as(info, void *, st->p_typeId);
297 xbt_dynar_push_as(info, void *, st->p_contentType);
302 sg_size_t Host::fileTell(surf_file_t fd){
303 return fd->current_position;
306 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
310 fd->current_position = offset;
313 fd->current_position += offset;
316 fd->current_position = fd->size + offset;
323 int Host::fileMove(surf_file_t fd, const char* fullpath){
324 /* Check if the new full path is on the same mount point */
325 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
326 sg_size_t *psize, *new_psize;
328 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
330 new_psize = xbt_new(sg_size_t, 1);
332 if (psize){// src file exists
333 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
334 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
335 strncpy(path, fullpath+strlen(fd->mount),
336 strlen(fullpath)-strlen(fd->mount)+1);
337 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
339 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
343 XBT_WARN("File %s doesn't exist", fd->name);
347 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
348 fullpath, fd->mount);
353 xbt_dynar_t Host::getVms()
355 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
357 /* iterate for all virtual machines */
358 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
359 simgrid::surf::VMModel::ws_vms.begin();
360 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
362 simgrid::surf::VirtualMachine *ws_vm = &*iter;
363 if (this == ws_vm->p_hostPM->extension(simgrid::surf::Host::EXTENSION_ID))
364 xbt_dynar_push(dyn, &ws_vm);
370 void Host::getParams(vm_params_t params)
375 void Host::setParams(vm_params_t params)
377 /* may check something here. */