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 (VirtualMachine *ws_vm : VirtualMachine::allVms_) {
49 Cpu *cpu = ws_vm->p_cpu;
51 int is_active = lmm_constraint_used(cpu->getModel()->getMaxminSystem(), cpu->getConstraint());
54 /* some tasks exist on this VM */
55 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
57 /* FIXME: we should use lmm_update_variable_weight() ? */
58 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
59 ws_vm->action_->setPriority(1);
62 /* no task exits on this VM */
63 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
65 ws_vm->action_->setPriority(0);
70 Action *HostModel::executeParallelTask(int host_nb,
76 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
77 Action *action =nullptr;
79 && (cost_or_zero(bytes_amount, 0) == 0.0)){
80 action = host_list[0]->pimpl_cpu->execution_start(flops_amount[0]);
81 } else if ((host_nb == 1)
82 && (cost_or_zero(flops_amount, 0) == 0.0)) {
83 action = surf_network_model->communicate(host_list[0]->pimpl_netcard,
84 host_list[0]->pimpl_netcard,
85 bytes_amount[0], rate);
86 } else if ((host_nb == 2)
87 && (cost_or_zero(flops_amount, 0) == 0.0)
88 && (cost_or_zero(flops_amount, 1) == 0.0)) {
92 for (i = 0; i < host_nb * host_nb; i++) {
93 if (cost_or_zero(bytes_amount, i) > 0.0) {
95 value = cost_or_zero(bytes_amount, i);
99 action = surf_network_model->communicate(host_list[0]->pimpl_netcard, host_list[1]->pimpl_netcard, value, rate);
100 } else if (nb == 0) {
101 xbt_die("Cannot have a communication with no flop to exchange in this model. You should consider using the ptask model");
103 xbt_die("Cannot have a communication that is not a simple point-to-point in this model. You should consider using the ptask model");
106 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");
115 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, xbt_dynar_t storage, Cpu *cpu)
116 : Resource(model, name)
117 , PropertyHolder(nullptr)
118 , p_storage(storage), p_cpu(cpu)
120 if (!EXTENSION_ID.valid())
121 EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::surf::HostImpl>();
122 p_params.ramsize = 0;
125 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, lmm_constraint_t constraint,
126 xbt_dynar_t storage, Cpu *cpu)
127 : Resource(model, name, constraint)
128 , PropertyHolder(nullptr)
129 , p_storage(storage), p_cpu(cpu)
131 p_params.ramsize = 0;
134 /** @brief use destroy() instead of this destructor */
135 HostImpl::~HostImpl()
139 void HostImpl::attach(simgrid::s4u::Host* host)
141 if (piface != nullptr)
142 xbt_die("Already attached to host %s", host->name().c_str());
143 host->extension_set(this);
147 bool HostImpl::isOn() const {
148 return p_cpu->isOn();
150 bool HostImpl::isOff() const {
151 return p_cpu->isOff();
153 void HostImpl::turnOn(){
156 simgrid::s4u::Host::onStateChange(*this->piface);
159 void HostImpl::turnOff(){
162 simgrid::s4u::Host::onStateChange(*this->piface);
166 simgrid::surf::Storage *HostImpl::findStorageOnMountList(const char* mount)
168 simgrid::surf::Storage *st = nullptr;
172 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
173 xbt_dynar_foreach(p_storage,cursor,mnt){
174 XBT_DEBUG("See '%s'",mnt.name);
175 if(!strcmp(mount,mnt.name)){
176 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
181 xbt_die("Can't find mount '%s' for '%s'", mount, getName());
185 xbt_dict_t HostImpl::getMountedStorageList()
189 xbt_dict_t storage_list = xbt_dict_new_homogeneous(nullptr);
190 char *storage_name = nullptr;
192 xbt_dynar_foreach(p_storage,i,mnt){
193 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
194 xbt_dict_set(storage_list,mnt.name,storage_name,nullptr);
199 xbt_dynar_t HostImpl::getAttachedStorageList()
201 xbt_lib_cursor_t cursor;
204 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), nullptr);
205 xbt_lib_foreach(storage_lib, cursor, key, data) {
206 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != nullptr) {
207 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));
208 if(!strcmp((const char*)storage->attach_,this->getName())){
209 xbt_dynar_push_as(result, void *, (void*)storage->getName());
216 Action *HostImpl::open(const char* fullpath) {
218 simgrid::surf::Storage *st = nullptr;
221 size_t longest_prefix_length = 0;
222 char *path = nullptr;
223 char *file_mount_name = nullptr;
224 char *mount_name = nullptr;
226 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
227 xbt_dynar_foreach(p_storage,cursor,mnt)
229 XBT_DEBUG("See '%s'",mnt.name);
230 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
231 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
232 file_mount_name[strlen(mnt.name)] = '\0';
234 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
235 {/* The current mount name is found in the full path and is bigger than the previous*/
236 longest_prefix_length = strlen(mnt.name);
237 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
239 free(file_mount_name);
241 if(longest_prefix_length>0)
242 { /* Mount point found, split fullpath into mount_name and path+filename*/
243 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
244 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
245 strncpy(mount_name, fullpath, longest_prefix_length+1);
246 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
247 path[strlen(fullpath)-longest_prefix_length] = '\0';
248 mount_name[longest_prefix_length] = '\0';
251 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
253 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
254 Action *action = st->open((const char*)mount_name, (const char*)path);
256 free((char*)mount_name);
260 Action *HostImpl::close(surf_file_t fd) {
261 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
262 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
263 return st->close(fd);
266 Action *HostImpl::read(surf_file_t fd, sg_size_t size) {
267 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
268 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
269 return st->read(fd, size);
272 Action *HostImpl::write(surf_file_t fd, sg_size_t size) {
273 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
274 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
275 return st->write(fd, size);
278 int HostImpl::unlink(surf_file_t fd) {
280 XBT_WARN("No such file descriptor. Impossible to unlink");
284 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
285 /* Check if the file is on this storage */
286 if (!xbt_dict_get_or_null(st->content_, fd->name)){
287 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
291 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
292 st->usedSize_ -= fd->size;
294 // Remove the file from storage
295 xbt_dict_remove(st->content_, fd->name);
305 sg_size_t HostImpl::getSize(surf_file_t fd){
309 xbt_dynar_t HostImpl::getInfo( surf_file_t fd)
311 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
312 sg_size_t *psize = xbt_new(sg_size_t, 1);
314 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), nullptr);
315 xbt_dynar_push_as(info, sg_size_t *, psize);
316 xbt_dynar_push_as(info, void *, fd->mount);
317 xbt_dynar_push_as(info, void *, (void *)st->getName());
318 xbt_dynar_push_as(info, void *, st->typeId_);
319 xbt_dynar_push_as(info, void *, st->contentType_);
324 sg_size_t HostImpl::fileTell(surf_file_t fd){
325 return fd->current_position;
328 int HostImpl::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
332 fd->current_position = offset;
335 fd->current_position += offset;
338 fd->current_position = fd->size + offset;
345 int HostImpl::fileMove(surf_file_t fd, const char* fullpath){
346 /* Check if the new full path is on the same mount point */
347 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
348 sg_size_t *psize, *new_psize;
350 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->content_,
352 new_psize = xbt_new(sg_size_t, 1);
354 if (psize){// src file exists
355 xbt_dict_remove(findStorageOnMountList(fd->mount)->content_, fd->name);
356 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
357 strncpy(path, fullpath+strlen(fd->mount),
358 strlen(fullpath)-strlen(fd->mount)+1);
359 xbt_dict_set(findStorageOnMountList(fd->mount)->content_, path,
361 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
365 XBT_WARN("File %s doesn't exist", fd->name);
369 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
370 fullpath, fd->mount);
375 xbt_dynar_t HostImpl::getVms()
377 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), nullptr);
379 for (VirtualMachine *ws_vm : VirtualMachine::allVms_) {
380 if (this == ws_vm->getPm()->extension<simgrid::surf::HostImpl>())
381 xbt_dynar_push(dyn, &ws_vm);
387 void HostImpl::getParams(vm_params_t params)
392 void HostImpl::setParams(vm_params_t params)
394 /* may check something here. */