1 /* Copyright (c) 2013-2016. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include <simgrid/s4u/host.hpp>
8 #include "src/simix/smx_private.h"
9 #include "cpu_cas01.hpp"
10 #include "src/surf/HostImpl.hpp"
11 #include "simgrid/sg_config.h"
13 #include "network_interface.hpp"
14 #include "virtual_machine.hpp"
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_host, surf, "Logging specific to the SURF host module");
18 simgrid::surf::HostModel *surf_host_model = nullptr;
27 simgrid::xbt::Extension<simgrid::s4u::Host, HostImpl> HostImpl::EXTENSION_ID;
32 HostImpl *HostModel::createHost(const char *name, kernel::routing::NetCard *netElm, Cpu *cpu){
33 xbt_dynar_t storageList = (xbt_dynar_t)xbt_lib_get_or_null(storage_lib, name, ROUTING_STORAGE_HOST_LEVEL);
35 HostImpl *host = new simgrid::surf::HostImpl(surf_host_model, name, storageList, cpu);
36 XBT_DEBUG("Create host %s with %ld mounted disks", name, xbt_dynar_length(host->p_storage));
40 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
41 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
42 * active task, the dummy CPU action must be deactivated, so that the VM does
43 * not get any CPU share in the PM layer. */
44 void HostModel::adjustWeightOfDummyCpuActions()
46 /* iterate for all virtual machines */
47 for (VMModel::vm_list_t::iterator iter =
48 VMModel::ws_vms.begin();
49 iter != VMModel::ws_vms.end(); ++iter) {
51 VirtualMachine *ws_vm = &*iter;
52 Cpu *cpu = ws_vm->p_cpu;
54 int is_active = lmm_constraint_used(cpu->getModel()->getMaxminSystem(), cpu->getConstraint());
57 /* some tasks exist on this VM */
58 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
60 /* FIXME: we should use lmm_update_variable_weight() ? */
61 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
62 ws_vm->action_->setPriority(1);
65 /* no task exits on this VM */
66 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
68 ws_vm->action_->setPriority(0);
73 Action *HostModel::executeParallelTask(int host_nb,
79 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
80 Action *action =nullptr;
82 && (cost_or_zero(bytes_amount, 0) == 0.0)){
83 action = host_list[0]->pimpl_cpu->execution_start(flops_amount[0]);
84 } else if ((host_nb == 1)
85 && (cost_or_zero(flops_amount, 0) == 0.0)) {
86 action = surf_network_model->communicate(host_list[0]->pimpl_netcard,
87 host_list[0]->pimpl_netcard,
88 bytes_amount[0], rate);
89 } else if ((host_nb == 2)
90 && (cost_or_zero(flops_amount, 0) == 0.0)
91 && (cost_or_zero(flops_amount, 1) == 0.0)) {
95 for (i = 0; i < host_nb * host_nb; i++) {
96 if (cost_or_zero(bytes_amount, i) > 0.0) {
98 value = cost_or_zero(bytes_amount, i);
102 action = surf_network_model->communicate(host_list[0]->pimpl_netcard, host_list[1]->pimpl_netcard, value, rate);
103 } else if (nb == 0) {
104 xbt_die("Cannot have a communication with no flop to exchange in this model. You should consider using the ptask model");
106 xbt_die("Cannot have a communication that is not a simple point-to-point in this model. You should consider using the ptask model");
109 xbt_die("This model only accepts one of the following. You should consider using the ptask model for the other cases.\n - execution with one host only and no communication\n - Self-comms with one host only\n - Communications with two hosts and no computation");
120 void HostImpl::classInit()
122 if (!EXTENSION_ID.valid()) {
123 EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::surf::HostImpl>();
127 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, xbt_dynar_t storage, Cpu *cpu)
128 : Resource(model, name)
129 , PropertyHolder(nullptr)
130 , p_storage(storage), p_cpu(cpu)
132 p_params.ramsize = 0;
135 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, lmm_constraint_t constraint,
136 xbt_dynar_t storage, Cpu *cpu)
137 : Resource(model, name, constraint)
138 , PropertyHolder(nullptr)
139 , p_storage(storage), p_cpu(cpu)
141 p_params.ramsize = 0;
144 /** @brief use destroy() instead of this destructor */
145 HostImpl::~HostImpl()
149 void HostImpl::attach(simgrid::s4u::Host* host)
151 if (piface != nullptr)
152 xbt_die("Already attached to host %s", host->name().c_str());
153 host->extension_set(this);
157 bool HostImpl::isOn() const {
158 return p_cpu->isOn();
160 bool HostImpl::isOff() const {
161 return p_cpu->isOff();
163 void HostImpl::turnOn(){
166 simgrid::s4u::Host::onStateChange(*this->piface);
169 void HostImpl::turnOff(){
172 simgrid::s4u::Host::onStateChange(*this->piface);
176 simgrid::surf::Storage *HostImpl::findStorageOnMountList(const char* mount)
178 simgrid::surf::Storage *st = nullptr;
182 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
183 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);
191 xbt_die("Can't find mount '%s' for '%s'", mount, getName());
195 xbt_dict_t HostImpl::getMountedStorageList()
199 xbt_dict_t storage_list = xbt_dict_new_homogeneous(nullptr);
200 char *storage_name = nullptr;
202 xbt_dynar_foreach(p_storage,i,mnt){
203 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
204 xbt_dict_set(storage_list,mnt.name,storage_name,nullptr);
209 xbt_dynar_t HostImpl::getAttachedStorageList()
211 xbt_lib_cursor_t cursor;
214 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), nullptr);
215 xbt_lib_foreach(storage_lib, cursor, key, data) {
216 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != nullptr) {
217 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));
218 if(!strcmp((const char*)storage->p_attach,this->getName())){
219 xbt_dynar_push_as(result, void *, (void*)storage->getName());
226 Action *HostImpl::open(const char* fullpath) {
228 simgrid::surf::Storage *st = nullptr;
231 size_t longest_prefix_length = 0;
232 char *path = nullptr;
233 char *file_mount_name = nullptr;
234 char *mount_name = nullptr;
236 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
237 xbt_dynar_foreach(p_storage,cursor,mnt)
239 XBT_DEBUG("See '%s'",mnt.name);
240 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
241 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
242 file_mount_name[strlen(mnt.name)] = '\0';
244 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
245 {/* The current mount name is found in the full path and is bigger than the previous*/
246 longest_prefix_length = strlen(mnt.name);
247 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
249 free(file_mount_name);
251 if(longest_prefix_length>0)
252 { /* Mount point found, split fullpath into mount_name and path+filename*/
253 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
254 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
255 strncpy(mount_name, fullpath, longest_prefix_length+1);
256 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
257 path[strlen(fullpath)-longest_prefix_length] = '\0';
258 mount_name[longest_prefix_length] = '\0';
261 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
263 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
264 Action *action = st->open((const char*)mount_name, (const char*)path);
266 free((char*)mount_name);
270 Action *HostImpl::close(surf_file_t fd) {
271 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
272 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
273 return st->close(fd);
276 Action *HostImpl::read(surf_file_t fd, sg_size_t size) {
277 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
278 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
279 return st->read(fd, size);
282 Action *HostImpl::write(surf_file_t fd, sg_size_t size) {
283 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
284 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
285 return st->write(fd, size);
288 int HostImpl::unlink(surf_file_t fd) {
290 XBT_WARN("No such file descriptor. Impossible to unlink");
294 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
295 /* Check if the file is on this storage */
296 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
297 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
301 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
302 st->m_usedSize -= fd->size;
304 // Remove the file from storage
305 xbt_dict_remove(st->p_content, fd->name);
315 sg_size_t HostImpl::getSize(surf_file_t fd){
319 xbt_dynar_t HostImpl::getInfo( surf_file_t fd)
321 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
322 sg_size_t *psize = xbt_new(sg_size_t, 1);
324 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), nullptr);
325 xbt_dynar_push_as(info, sg_size_t *, psize);
326 xbt_dynar_push_as(info, void *, fd->mount);
327 xbt_dynar_push_as(info, void *, (void *)st->getName());
328 xbt_dynar_push_as(info, void *, st->p_typeId);
329 xbt_dynar_push_as(info, void *, st->p_contentType);
334 sg_size_t HostImpl::fileTell(surf_file_t fd){
335 return fd->current_position;
338 int HostImpl::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
342 fd->current_position = offset;
345 fd->current_position += offset;
348 fd->current_position = fd->size + offset;
355 int HostImpl::fileMove(surf_file_t fd, const char* fullpath){
356 /* Check if the new full path is on the same mount point */
357 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
358 sg_size_t *psize, *new_psize;
360 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
362 new_psize = xbt_new(sg_size_t, 1);
364 if (psize){// src file exists
365 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
366 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
367 strncpy(path, fullpath+strlen(fd->mount),
368 strlen(fullpath)-strlen(fd->mount)+1);
369 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
371 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
375 XBT_WARN("File %s doesn't exist", fd->name);
379 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
380 fullpath, fd->mount);
385 xbt_dynar_t HostImpl::getVms()
387 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), nullptr);
389 /* iterate for all virtual machines */
390 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
391 simgrid::surf::VMModel::ws_vms.begin();
392 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
394 simgrid::surf::VirtualMachine *ws_vm = &*iter;
395 if (this == ws_vm->getPm()->extension(simgrid::surf::HostImpl::EXTENSION_ID))
396 xbt_dynar_push(dyn, &ws_vm);
402 void HostImpl::getParams(vm_params_t params)
407 void HostImpl::setParams(vm_params_t params)
409 /* may check something here. */