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,
17 "Logging specific to the SURF host module");
19 simgrid::surf::HostModel *surf_host_model = nullptr;
28 simgrid::xbt::Extension<simgrid::s4u::Host, HostImpl> HostImpl::EXTENSION_ID;
33 HostImpl *HostModel::createHost(const char *name, kernel::routing::NetCard *netElm, Cpu *cpu){
34 xbt_dynar_t storageList = (xbt_dynar_t)xbt_lib_get_or_null(storage_lib, name, ROUTING_STORAGE_HOST_LEVEL);
36 HostImpl *host = new simgrid::surf::HostImpl(surf_host_model, name, storageList, cpu);
37 XBT_DEBUG("Create host %s with %ld mounted disks", name, xbt_dynar_length(host->p_storage));
41 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
42 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
43 * active task, the dummy CPU action must be deactivated, so that the VM does
44 * not get any CPU share in the PM layer. */
45 void HostModel::adjustWeightOfDummyCpuActions()
47 /* iterate for all virtual machines */
48 for (VMModel::vm_list_t::iterator iter =
49 VMModel::ws_vms.begin();
50 iter != VMModel::ws_vms.end(); ++iter) {
52 VirtualMachine *ws_vm = &*iter;
53 Cpu *cpu = ws_vm->p_cpu;
55 int is_active = lmm_constraint_used(cpu->getModel()->getMaxminSystem(), cpu->getConstraint());
58 /* some tasks exist on this VM */
59 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
61 /* FIXME: we should use lmm_update_variable_weight() ? */
62 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
63 ws_vm->action_->setPriority(1);
66 /* no task exits on this VM */
67 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
69 ws_vm->action_->setPriority(0);
74 Action *HostModel::executeParallelTask(int host_nb,
80 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
81 Action *action =nullptr;
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,
106 } else if (nb == 0) {
107 xbt_die("Cannot have a communication with no flop to exchange in this model. You should consider using the ptask model");
109 xbt_die("Cannot have a communication that is not a simple point-to-point in this model. You should consider using the ptask model");
112 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");
123 void HostImpl::classInit()
125 if (!EXTENSION_ID.valid()) {
126 EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::surf::HostImpl>();
130 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, xbt_dynar_t storage, Cpu *cpu)
131 : Resource(model, name)
132 , PropertyHolder(nullptr)
133 , p_storage(storage), p_cpu(cpu)
135 p_params.ramsize = 0;
138 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, lmm_constraint_t constraint,
139 xbt_dynar_t storage, Cpu *cpu)
140 : Resource(model, name, constraint)
141 , PropertyHolder(nullptr)
142 , p_storage(storage), p_cpu(cpu)
144 p_params.ramsize = 0;
147 /** @brief use destroy() instead of this destructor */
148 HostImpl::~HostImpl()
152 void HostImpl::attach(simgrid::s4u::Host* host)
154 if (piface != nullptr)
155 xbt_die("Already attached to host %s", host->name().c_str());
156 host->extension_set(this);
160 bool HostImpl::isOn() const {
161 return p_cpu->isOn();
163 bool HostImpl::isOff() const {
164 return p_cpu->isOff();
166 void HostImpl::turnOn(){
169 simgrid::s4u::Host::onStateChange(*this->piface);
172 void HostImpl::turnOff(){
175 simgrid::s4u::Host::onStateChange(*this->piface);
179 simgrid::surf::Storage *HostImpl::findStorageOnMountList(const char* mount)
181 simgrid::surf::Storage *st = nullptr;
185 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
186 xbt_dynar_foreach(p_storage,cursor,mnt)
188 XBT_DEBUG("See '%s'",mnt.name);
189 if(!strcmp(mount,mnt.name)){
190 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
194 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
198 xbt_dict_t HostImpl::getMountedStorageList()
202 xbt_dict_t storage_list = xbt_dict_new_homogeneous(nullptr);
203 char *storage_name = nullptr;
205 xbt_dynar_foreach(p_storage,i,mnt){
206 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
207 xbt_dict_set(storage_list,mnt.name,storage_name,nullptr);
212 xbt_dynar_t HostImpl::getAttachedStorageList()
214 xbt_lib_cursor_t cursor;
217 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), nullptr);
218 xbt_lib_foreach(storage_lib, cursor, key, data) {
219 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != nullptr) {
220 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));
221 if(!strcmp((const char*)storage->p_attach,this->getName())){
222 xbt_dynar_push_as(result, void *, (void*)storage->getName());
229 Action *HostImpl::open(const char* fullpath) {
231 simgrid::surf::Storage *st = nullptr;
234 size_t longest_prefix_length = 0;
235 char *path = nullptr;
236 char *file_mount_name = nullptr;
237 char *mount_name = nullptr;
239 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
240 xbt_dynar_foreach(p_storage,cursor,mnt)
242 XBT_DEBUG("See '%s'",mnt.name);
243 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
244 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
245 file_mount_name[strlen(mnt.name)] = '\0';
247 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
248 {/* The current mount name is found in the full path and is bigger than the previous*/
249 longest_prefix_length = strlen(mnt.name);
250 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
252 free(file_mount_name);
254 if(longest_prefix_length>0)
255 { /* Mount point found, split fullpath into mount_name and path+filename*/
256 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
257 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
258 strncpy(mount_name, fullpath, longest_prefix_length+1);
259 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
260 path[strlen(fullpath)-longest_prefix_length] = '\0';
261 mount_name[longest_prefix_length] = '\0';
264 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
266 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
267 Action *action = st->open((const char*)mount_name, (const char*)path);
269 free((char*)mount_name);
273 Action *HostImpl::close(surf_file_t fd) {
274 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
275 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
276 return st->close(fd);
279 Action *HostImpl::read(surf_file_t fd, sg_size_t size) {
280 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
281 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
282 return st->read(fd, size);
285 Action *HostImpl::write(surf_file_t fd, sg_size_t size) {
286 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
287 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
288 return st->write(fd, size);
291 int HostImpl::unlink(surf_file_t fd) {
293 XBT_WARN("No such file descriptor. Impossible to unlink");
297 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
298 /* Check if the file is on this storage */
299 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
300 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
304 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
305 st->m_usedSize -= fd->size;
307 // Remove the file from storage
308 xbt_dict_remove(st->p_content, fd->name);
318 sg_size_t HostImpl::getSize(surf_file_t fd){
322 xbt_dynar_t HostImpl::getInfo( surf_file_t fd)
324 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
325 sg_size_t *psize = xbt_new(sg_size_t, 1);
327 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), nullptr);
328 xbt_dynar_push_as(info, sg_size_t *, psize);
329 xbt_dynar_push_as(info, void *, fd->mount);
330 xbt_dynar_push_as(info, void *, (void *)st->getName());
331 xbt_dynar_push_as(info, void *, st->p_typeId);
332 xbt_dynar_push_as(info, void *, st->p_contentType);
337 sg_size_t HostImpl::fileTell(surf_file_t fd){
338 return fd->current_position;
341 int HostImpl::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
345 fd->current_position = offset;
348 fd->current_position += offset;
351 fd->current_position = fd->size + offset;
358 int HostImpl::fileMove(surf_file_t fd, const char* fullpath){
359 /* Check if the new full path is on the same mount point */
360 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
361 sg_size_t *psize, *new_psize;
363 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
365 new_psize = xbt_new(sg_size_t, 1);
367 if (psize){// src file exists
368 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
369 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
370 strncpy(path, fullpath+strlen(fd->mount),
371 strlen(fullpath)-strlen(fd->mount)+1);
372 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
374 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
378 XBT_WARN("File %s doesn't exist", fd->name);
382 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
383 fullpath, fd->mount);
388 xbt_dynar_t HostImpl::getVms()
390 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), nullptr);
392 /* iterate for all virtual machines */
393 for (simgrid::surf::VMModel::vm_list_t::iterator iter =
394 simgrid::surf::VMModel::ws_vms.begin();
395 iter != simgrid::surf::VMModel::ws_vms.end(); ++iter) {
397 simgrid::surf::VirtualMachine *ws_vm = &*iter;
398 if (this == ws_vm->getPm()->extension(simgrid::surf::HostImpl::EXTENSION_ID))
399 xbt_dynar_push(dyn, &ws_vm);
405 void HostImpl::getParams(vm_params_t params)
410 void HostImpl::setParams(vm_params_t params)
412 /* may check something here. */