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,
43 storageList, netElm, cpu);
44 XBT_DEBUG("Create host %s with %ld mounted disks", name, xbt_dynar_length(host->p_storage));
48 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
49 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
50 * active task, the dummy CPU action must be deactivated, so that the VM does
51 * not get any CPU share in the PM layer. */
52 void HostModel::adjustWeightOfDummyCpuActions()
54 /* iterate for all virtual machines */
55 for (VMModel::vm_list_t::iterator iter =
56 VMModel::ws_vms.begin();
57 iter != VMModel::ws_vms.end(); ++iter) {
59 VirtualMachine *ws_vm = &*iter;
60 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
61 xbt_assert(cpu_cas01, "cpu-less host");
63 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
64 // int is_active_old = constraint_is_active(cpu_cas01);
67 /* some tasks exist on this VM */
68 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
70 /* FIXME: we should use lmm_update_variable_weight() ? */
71 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
72 ws_vm->p_action->setPriority(1);
75 /* no task exits on this VM */
76 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
78 ws_vm->p_action->setPriority(0);
86 simgrid::surf::signal<void(simgrid::surf::Host*)> Host::onCreation;
87 simgrid::surf::signal<void(simgrid::surf::Host*)> Host::onDestruction;
88 simgrid::surf::signal<void(simgrid::surf::Host*, e_surf_resource_state_t, e_surf_resource_state_t)> Host::onStateChange;
90 void Host::classInit()
92 if (!EXTENSION_ID.valid()) {
93 EXTENSION_ID = simgrid::Host::extension_create<simgrid::surf::Host>([](void *h) {
94 static_cast<simgrid::surf::Host*>(h)->destroy();
99 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props,
100 xbt_dynar_t storage, NetCard *netElm, Cpu *cpu)
101 : Resource(model, name)
102 , PropertyHolder(props)
103 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
105 p_params.ramsize = 0;
108 Host::Host(simgrid::surf::Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
109 xbt_dynar_t storage, NetCard *netElm, Cpu *cpu)
110 : Resource(model, name, constraint)
111 , PropertyHolder(props)
112 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
114 p_params.ramsize = 0;
117 /** @brief use destroy() instead of this destructor */
120 xbt_assert(currentlyDestroying_, "Don't delete Hosts directly. Call destroy() instead.");
122 // FIXME: VM plays strange games, leading to segfaults if I do the expected thing of next line
126 /** @brief Fire the require callbacks and destroy the object
128 * Don't delete directly an Host, call h->destroy() instead.
132 if (!currentlyDestroying_) {
133 currentlyDestroying_ = true;
139 void Host::attach(simgrid::Host* host)
141 if (p_host != nullptr)
142 xbt_die("Already attached to host %s", host->getName().c_str());
143 host->extension_set(this);
148 e_surf_resource_state_t Host::getState() {
149 return p_cpu->getState();
151 void Host::setState(e_surf_resource_state_t state){
152 e_surf_resource_state_t old = Resource::getState();
153 Resource::setState(state);
154 onStateChange(this, old, state);
155 p_cpu->setState(state);
159 simgrid::surf::Storage *Host::findStorageOnMountList(const char* mount)
161 simgrid::surf::Storage *st = NULL;
165 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
166 xbt_dynar_foreach(p_storage,cursor,mnt)
168 XBT_DEBUG("See '%s'",mnt.name);
169 if(!strcmp(mount,mnt.name)){
170 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
174 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
178 xbt_dict_t Host::getMountedStorageList()
182 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
183 char *storage_name = NULL;
185 xbt_dynar_foreach(p_storage,i,mnt){
186 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
187 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
192 xbt_dynar_t Host::getAttachedStorageList()
194 xbt_lib_cursor_t cursor;
197 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
198 xbt_lib_foreach(storage_lib, cursor, key, data) {
199 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
200 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));
201 if(!strcmp((const char*)storage->p_attach,this->getName())){
202 xbt_dynar_push_as(result, void *, (void*)storage->getName());
209 Action *Host::open(const char* fullpath) {
211 simgrid::surf::Storage *st = NULL;
214 size_t longest_prefix_length = 0;
216 char *file_mount_name = NULL;
217 char *mount_name = NULL;
219 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
220 xbt_dynar_foreach(p_storage,cursor,mnt)
222 XBT_DEBUG("See '%s'",mnt.name);
223 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
224 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
225 file_mount_name[strlen(mnt.name)] = '\0';
227 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
228 {/* The current mount name is found in the full path and is bigger than the previous*/
229 longest_prefix_length = strlen(mnt.name);
230 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
232 free(file_mount_name);
234 if(longest_prefix_length>0)
235 { /* Mount point found, split fullpath into mount_name and path+filename*/
236 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
237 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
238 strncpy(mount_name, fullpath, longest_prefix_length+1);
239 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
240 path[strlen(fullpath)-longest_prefix_length] = '\0';
241 mount_name[longest_prefix_length] = '\0';
244 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
246 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
247 Action *action = st->open((const char*)mount_name, (const char*)path);
249 free((char*)mount_name);
253 Action *Host::close(surf_file_t fd) {
254 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
255 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
256 return st->close(fd);
259 Action *Host::read(surf_file_t fd, sg_size_t size) {
260 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
261 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
262 return st->read(fd, size);
265 Action *Host::write(surf_file_t fd, sg_size_t size) {
266 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
267 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
268 return st->write(fd, size);
271 int Host::unlink(surf_file_t fd) {
273 XBT_WARN("No such file descriptor. Impossible to unlink");
277 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
278 /* Check if the file is on this storage */
279 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
280 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
284 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
285 st->m_usedSize -= fd->size;
287 // Remove the file from storage
288 xbt_dict_remove(st->p_content, fd->name);
298 sg_size_t Host::getSize(surf_file_t fd){
302 xbt_dynar_t Host::getInfo( surf_file_t fd)
304 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
305 sg_size_t *psize = xbt_new(sg_size_t, 1);
307 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
308 xbt_dynar_push_as(info, sg_size_t *, psize);
309 xbt_dynar_push_as(info, void *, fd->mount);
310 xbt_dynar_push_as(info, void *, (void *)st->getName());
311 xbt_dynar_push_as(info, void *, st->p_typeId);
312 xbt_dynar_push_as(info, void *, st->p_contentType);
317 sg_size_t Host::fileTell(surf_file_t fd){
318 return fd->current_position;
321 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
325 fd->current_position = offset;
328 fd->current_position += offset;
331 fd->current_position = fd->size + offset;
338 int Host::fileMove(surf_file_t fd, const char* fullpath){
339 /* Check if the new full path is on the same mount point */
340 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
341 sg_size_t *psize, *new_psize;
343 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
345 new_psize = xbt_new(sg_size_t, 1);
347 if (psize){// src file exists
348 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
349 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
350 strncpy(path, fullpath+strlen(fd->mount),
351 strlen(fullpath)-strlen(fd->mount)+1);
352 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
354 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
358 XBT_WARN("File %s doesn't exist", fd->name);
362 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
363 fullpath, fd->mount);
368 xbt_dynar_t Host::getVms()
370 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
372 /* iterate for all virtual machines */
373 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
374 simgrid::surf::VMModel::ws_vms.begin();
375 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
377 simgrid::surf::VirtualMachine *ws_vm = &*iter;
378 if (this == ws_vm->p_hostPM->extension(simgrid::surf::Host::EXTENSION_ID))
379 xbt_dynar_push(dyn, &ws_vm);
385 void Host::getParams(vm_params_t params)
390 void Host::setParams(vm_params_t params)
392 /* may check something here. */