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, storageList, cpu);
46 XBT_DEBUG("Create host %s with %ld mounted disks", name, xbt_dynar_length(host->p_storage));
50 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
51 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
52 * active task, the dummy CPU action must be deactivated, so that the VM does
53 * not get any CPU share in the PM layer. */
54 void HostModel::adjustWeightOfDummyCpuActions()
56 /* iterate for all virtual machines */
57 for (VMModel::vm_list_t::iterator iter =
58 VMModel::ws_vms.begin();
59 iter != VMModel::ws_vms.end(); ++iter) {
61 VirtualMachine *ws_vm = &*iter;
62 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
63 xbt_assert(cpu_cas01, "cpu-less host");
65 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
66 // int is_active_old = constraint_is_active(cpu_cas01);
69 /* some tasks exist on this VM */
70 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
72 /* FIXME: we should use lmm_update_variable_weight() ? */
73 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
74 ws_vm->p_action->setPriority(1);
77 /* no task exits on this VM */
78 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
80 ws_vm->p_action->setPriority(0);
88 simgrid::surf::signal<void(simgrid::surf::Host*)> Host::onCreation;
89 simgrid::surf::signal<void(simgrid::surf::Host*)> Host::onDestruction;
90 simgrid::surf::signal<void(simgrid::surf::Host*)> Host::onStateChange;
92 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props,
93 xbt_dynar_t storage, Cpu *cpu)
94 : Resource(model, name)
95 , PropertyHolder(props)
96 , p_storage(storage), p_cpu(cpu)
101 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
102 xbt_dynar_t storage, Cpu *cpu)
103 : Resource(model, name, constraint)
104 , PropertyHolder(props)
105 , p_storage(storage), p_cpu(cpu)
107 p_params.ramsize = 0;
110 /** @brief use destroy() instead of this destructor */
113 xbt_assert(currentlyDestroying_, "Don't delete Hosts directly. Call destroy() instead.");
115 // FIXME: VM plays strange games, leading to segfaults if I do the expected thing of next line
119 /** @brief Fire the require callbacks and destroy the object
121 * Don't delete directly an Host, call h->destroy() instead.
125 if (!currentlyDestroying_) {
126 currentlyDestroying_ = true;
132 void Host::attach(simgrid::Host* host)
134 if (p_host != nullptr)
135 xbt_die("Already attached to host %s", host->getName().c_str());
136 host->extension_set(this);
142 return p_cpu->isOn();
145 return p_cpu->isOff();
153 void Host::turnOff(){
160 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
162 simgrid::surf::Storage *st = NULL;
166 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
167 xbt_dynar_foreach(p_storage,cursor,mnt)
169 XBT_DEBUG("See '%s'",mnt.name);
170 if(!strcmp(mount,mnt.name)){
171 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
175 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
179 xbt_dict_t Host::getMountedStorageList()
183 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
184 char *storage_name = NULL;
186 xbt_dynar_foreach(p_storage,i,mnt){
187 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
188 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
193 xbt_dynar_t Host::getAttachedStorageList()
195 xbt_lib_cursor_t cursor;
198 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
199 xbt_lib_foreach(storage_lib, cursor, key, data) {
200 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
201 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));
202 if(!strcmp((const char*)storage->p_attach,this->getName())){
203 xbt_dynar_push_as(result, void *, (void*)storage->getName());
210 Action *Host::open(const char* fullpath) {
212 simgrid::surf::Storage *st = NULL;
215 size_t longest_prefix_length = 0;
217 char *file_mount_name = NULL;
218 char *mount_name = NULL;
220 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
221 xbt_dynar_foreach(p_storage,cursor,mnt)
223 XBT_DEBUG("See '%s'",mnt.name);
224 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
225 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
226 file_mount_name[strlen(mnt.name)] = '\0';
228 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
229 {/* The current mount name is found in the full path and is bigger than the previous*/
230 longest_prefix_length = strlen(mnt.name);
231 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
233 free(file_mount_name);
235 if(longest_prefix_length>0)
236 { /* Mount point found, split fullpath into mount_name and path+filename*/
237 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
238 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
239 strncpy(mount_name, fullpath, longest_prefix_length+1);
240 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
241 path[strlen(fullpath)-longest_prefix_length] = '\0';
242 mount_name[longest_prefix_length] = '\0';
245 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
247 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
248 Action *action = st->open((const char*)mount_name, (const char*)path);
250 free((char*)mount_name);
254 Action *Host::close(surf_file_t fd) {
255 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
256 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
257 return st->close(fd);
260 Action *Host::read(surf_file_t fd, sg_size_t size) {
261 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
262 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
263 return st->read(fd, size);
266 Action *Host::write(surf_file_t fd, sg_size_t size) {
267 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
268 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
269 return st->write(fd, size);
272 int Host::unlink(surf_file_t fd) {
274 XBT_WARN("No such file descriptor. Impossible to unlink");
278 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
279 /* Check if the file is on this storage */
280 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
281 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
285 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
286 st->m_usedSize -= fd->size;
288 // Remove the file from storage
289 xbt_dict_remove(st->p_content, fd->name);
299 sg_size_t Host::getSize(surf_file_t fd){
303 xbt_dynar_t Host::getInfo( surf_file_t fd)
305 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
306 sg_size_t *psize = xbt_new(sg_size_t, 1);
308 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
309 xbt_dynar_push_as(info, sg_size_t *, psize);
310 xbt_dynar_push_as(info, void *, fd->mount);
311 xbt_dynar_push_as(info, void *, (void *)st->getName());
312 xbt_dynar_push_as(info, void *, st->p_typeId);
313 xbt_dynar_push_as(info, void *, st->p_contentType);
318 sg_size_t Host::fileTell(surf_file_t fd){
319 return fd->current_position;
322 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
326 fd->current_position = offset;
329 fd->current_position += offset;
332 fd->current_position = fd->size + offset;
339 int Host::fileMove(surf_file_t fd, const char* fullpath){
340 /* Check if the new full path is on the same mount point */
341 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
342 sg_size_t *psize, *new_psize;
344 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
346 new_psize = xbt_new(sg_size_t, 1);
348 if (psize){// src file exists
349 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
350 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
351 strncpy(path, fullpath+strlen(fd->mount),
352 strlen(fullpath)-strlen(fd->mount)+1);
353 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
355 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
359 XBT_WARN("File %s doesn't exist", fd->name);
363 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
364 fullpath, fd->mount);
369 xbt_dynar_t Host::getVms()
371 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
373 /* iterate for all virtual machines */
374 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
375 simgrid::surf::VMModel::ws_vms.begin();
376 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
378 simgrid::surf::VirtualMachine *ws_vm = &*iter;
379 if (this == ws_vm->p_hostPM->extension(simgrid::surf::Host::EXTENSION_ID))
380 xbt_dynar_push(dyn, &ws_vm);
386 void Host::getParams(vm_params_t params)
391 void Host::setParams(vm_params_t params)
393 /* may check something here. */