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 <simgrid/s4u/host.hpp>
9 #include "src/simix/smx_private.h"
10 #include "cpu_cas01.hpp"
11 #include "src/surf/HostImpl.hpp"
12 #include "simgrid/sg_config.h"
14 #include "network_interface.hpp"
15 #include "virtual_machine.hpp"
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_host, surf,
18 "Logging specific to the SURF host module");
20 simgrid::surf::HostModel *surf_host_model = NULL;
29 simgrid::xbt::Extension<simgrid::s4u::Host, HostImpl> HostImpl::EXTENSION_ID;
34 HostImpl *HostModel::createHost(const char *name, NetCard *netElm, Cpu *cpu){
35 xbt_dynar_t storageList = (xbt_dynar_t)xbt_lib_get_or_null(storage_lib, name, ROUTING_STORAGE_HOST_LEVEL);
37 HostImpl *host = new simgrid::surf::HostImpl(surf_host_model, name, storageList, cpu);
38 XBT_DEBUG("Create host %s with %ld mounted disks", name, xbt_dynar_length(host->p_storage));
42 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
43 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
44 * active task, the dummy CPU action must be deactivated, so that the VM does
45 * not get any CPU share in the PM layer. */
46 void HostModel::adjustWeightOfDummyCpuActions()
48 /* iterate for all virtual machines */
49 for (VMModel::vm_list_t::iterator iter =
50 VMModel::ws_vms.begin();
51 iter != VMModel::ws_vms.end(); ++iter) {
53 VirtualMachine *ws_vm = &*iter;
54 Cpu *cpu = ws_vm->p_cpu;
56 int is_active = lmm_constraint_used(cpu->getModel()->getMaxminSystem(), cpu->getConstraint());
59 /* some tasks exist on this VM */
60 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
62 /* FIXME: we should use lmm_update_variable_weight() ? */
63 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
64 ws_vm->action_->setPriority(1);
67 /* no task exits on this VM */
68 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
70 ws_vm->action_->setPriority(0);
75 Action *HostModel::executeParallelTask(int host_nb,
80 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
83 && (cost_or_zero(bytes_amount, 0) == 0.0)){
84 action = host_list[0]->pimpl_cpu->execution_start(flops_amount[0]);
85 } else if ((host_nb == 1)
86 && (cost_or_zero(flops_amount, 0) == 0.0)) {
87 action = surf_network_model->communicate(host_list[0]->pimpl_netcard,
88 host_list[0]->pimpl_netcard,
89 bytes_amount[0], rate);
90 } else if ((host_nb == 2)
91 && (cost_or_zero(flops_amount, 0) == 0.0)
92 && (cost_or_zero(flops_amount, 1) == 0.0)) {
96 for (i = 0; i < host_nb * host_nb; i++) {
97 if (cost_or_zero(bytes_amount, i) > 0.0) {
99 value = cost_or_zero(bytes_amount, i);
103 action = surf_network_model->communicate(host_list[0]->pimpl_netcard,
104 host_list[1]->pimpl_netcard,
108 THROW_UNIMPLEMENTED; /* This model does not implement parallel tasks for more than 2 hosts */
119 void HostImpl::classInit()
121 if (!EXTENSION_ID.valid()) {
122 EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::surf::HostImpl>();
126 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, xbt_dynar_t storage, Cpu *cpu)
127 : Resource(model, name)
128 , PropertyHolder(nullptr)
129 , p_storage(storage), p_cpu(cpu)
131 p_params.ramsize = 0;
134 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, lmm_constraint_t constraint,
135 xbt_dynar_t storage, Cpu *cpu)
136 : Resource(model, name, constraint)
137 , PropertyHolder(nullptr)
138 , p_storage(storage), p_cpu(cpu)
140 p_params.ramsize = 0;
143 /** @brief use destroy() instead of this destructor */
144 HostImpl::~HostImpl()
148 void HostImpl::attach(simgrid::s4u::Host* host)
150 if (p_host != nullptr)
151 xbt_die("Already attached to host %s", host->name().c_str());
152 host->extension_set(this);
156 bool HostImpl::isOn() const {
157 return p_cpu->isOn();
159 bool HostImpl::isOff() const {
160 return p_cpu->isOff();
162 void HostImpl::turnOn(){
165 simgrid::s4u::Host::onStateChange(*this->p_host);
168 void HostImpl::turnOff(){
171 simgrid::s4u::Host::onStateChange(*this->p_host);
175 simgrid::surf::Storage *HostImpl::findStorageOnMountList(const char* mount)
177 simgrid::surf::Storage *st = NULL;
181 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
182 xbt_dynar_foreach(p_storage,cursor,mnt)
184 XBT_DEBUG("See '%s'",mnt.name);
185 if(!strcmp(mount,mnt.name)){
186 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
190 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
194 xbt_dict_t HostImpl::getMountedStorageList()
198 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
199 char *storage_name = NULL;
201 xbt_dynar_foreach(p_storage,i,mnt){
202 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
203 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
208 xbt_dynar_t HostImpl::getAttachedStorageList()
210 xbt_lib_cursor_t cursor;
213 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
214 xbt_lib_foreach(storage_lib, cursor, key, data) {
215 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
216 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));
217 if(!strcmp((const char*)storage->p_attach,this->getName())){
218 xbt_dynar_push_as(result, void *, (void*)storage->getName());
225 Action *HostImpl::open(const char* fullpath) {
227 simgrid::surf::Storage *st = NULL;
230 size_t longest_prefix_length = 0;
232 char *file_mount_name = NULL;
233 char *mount_name = NULL;
235 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
236 xbt_dynar_foreach(p_storage,cursor,mnt)
238 XBT_DEBUG("See '%s'",mnt.name);
239 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
240 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
241 file_mount_name[strlen(mnt.name)] = '\0';
243 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
244 {/* The current mount name is found in the full path and is bigger than the previous*/
245 longest_prefix_length = strlen(mnt.name);
246 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
248 free(file_mount_name);
250 if(longest_prefix_length>0)
251 { /* Mount point found, split fullpath into mount_name and path+filename*/
252 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
253 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
254 strncpy(mount_name, fullpath, longest_prefix_length+1);
255 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
256 path[strlen(fullpath)-longest_prefix_length] = '\0';
257 mount_name[longest_prefix_length] = '\0';
260 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
262 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
263 Action *action = st->open((const char*)mount_name, (const char*)path);
265 free((char*)mount_name);
269 Action *HostImpl::close(surf_file_t fd) {
270 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
271 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
272 return st->close(fd);
275 Action *HostImpl::read(surf_file_t fd, sg_size_t size) {
276 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
277 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
278 return st->read(fd, size);
281 Action *HostImpl::write(surf_file_t fd, sg_size_t size) {
282 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
283 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
284 return st->write(fd, size);
287 int HostImpl::unlink(surf_file_t fd) {
289 XBT_WARN("No such file descriptor. Impossible to unlink");
293 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
294 /* Check if the file is on this storage */
295 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
296 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
300 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
301 st->m_usedSize -= fd->size;
303 // Remove the file from storage
304 xbt_dict_remove(st->p_content, fd->name);
314 sg_size_t HostImpl::getSize(surf_file_t fd){
318 xbt_dynar_t HostImpl::getInfo( surf_file_t fd)
320 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
321 sg_size_t *psize = xbt_new(sg_size_t, 1);
323 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
324 xbt_dynar_push_as(info, sg_size_t *, psize);
325 xbt_dynar_push_as(info, void *, fd->mount);
326 xbt_dynar_push_as(info, void *, (void *)st->getName());
327 xbt_dynar_push_as(info, void *, st->p_typeId);
328 xbt_dynar_push_as(info, void *, st->p_contentType);
333 sg_size_t HostImpl::fileTell(surf_file_t fd){
334 return fd->current_position;
337 int HostImpl::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
341 fd->current_position = offset;
344 fd->current_position += offset;
347 fd->current_position = fd->size + offset;
354 int HostImpl::fileMove(surf_file_t fd, const char* fullpath){
355 /* Check if the new full path is on the same mount point */
356 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
357 sg_size_t *psize, *new_psize;
359 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
361 new_psize = xbt_new(sg_size_t, 1);
363 if (psize){// src file exists
364 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
365 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
366 strncpy(path, fullpath+strlen(fd->mount),
367 strlen(fullpath)-strlen(fd->mount)+1);
368 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
370 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
374 XBT_WARN("File %s doesn't exist", fd->name);
378 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
379 fullpath, fd->mount);
384 xbt_dynar_t HostImpl::getVms()
386 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), NULL);
388 /* iterate for all virtual machines */
389 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
390 simgrid::surf::VMModel::ws_vms.begin();
391 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
393 simgrid::surf::VirtualMachine *ws_vm = &*iter;
394 if (this == ws_vm->getPm()->extension(simgrid::surf::HostImpl::EXTENSION_ID))
395 xbt_dynar_push(dyn, &ws_vm);
401 void HostImpl::getParams(vm_params_t params)
406 void HostImpl::setParams(vm_params_t params)
408 /* may check something here. */