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->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->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, simgrid::s4u::Host** host_list, double* flops_amount,
71 double* bytes_amount, double rate)
73 #define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
74 Action *action =nullptr;
76 && (cost_or_zero(bytes_amount, 0) == 0.0)){
77 action = host_list[0]->pimpl_cpu->execution_start(flops_amount[0]);
78 } else if ((host_nb == 1)
79 && (cost_or_zero(flops_amount, 0) == 0.0)) {
80 action = surf_network_model->communicate(host_list[0], host_list[0], bytes_amount[0], rate);
81 } else if ((host_nb == 2)
82 && (cost_or_zero(flops_amount, 0) == 0.0)
83 && (cost_or_zero(flops_amount, 1) == 0.0)) {
87 for (i = 0; i < host_nb * host_nb; i++) {
88 if (cost_or_zero(bytes_amount, i) > 0.0) {
90 value = cost_or_zero(bytes_amount, i);
94 action = surf_network_model->communicate(host_list[0], host_list[1], value, rate);
96 xbt_die("Cannot have a communication with no flop to exchange in this model. You should consider using the ptask model");
98 xbt_die("Cannot have a communication that is not a simple point-to-point in this model. You should consider using the ptask model");
101 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");
110 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, xbt_dynar_t storage, Cpu *cpu)
111 : Resource(model, name)
112 , PropertyHolder(nullptr)
113 , storage_(storage), cpu_(cpu)
115 if (!EXTENSION_ID.valid())
116 EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::surf::HostImpl>();
120 HostImpl::HostImpl(simgrid::surf::HostModel *model, const char *name, lmm_constraint_t constraint,
121 xbt_dynar_t storage, Cpu *cpu)
122 : Resource(model, name, constraint)
123 , PropertyHolder(nullptr)
124 , storage_(storage), cpu_(cpu)
129 /** @brief use destroy() instead of this destructor */
130 HostImpl::~HostImpl()
134 void HostImpl::attach(simgrid::s4u::Host* host)
136 if (piface_ != nullptr)
137 xbt_die("Already attached to host %s", host->name().c_str());
138 host->extension_set(this);
142 bool HostImpl::isOn() const {
145 bool HostImpl::isOff() const {
146 return cpu_->isOff();
148 void HostImpl::turnOn(){
151 simgrid::s4u::Host::onStateChange(*this->piface_);
154 void HostImpl::turnOff(){
157 simgrid::s4u::Host::onStateChange(*this->piface_);
161 simgrid::surf::Storage *HostImpl::findStorageOnMountList(const char* mount)
163 simgrid::surf::Storage *st = nullptr;
167 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
168 xbt_dynar_foreach(storage_,cursor,mnt){
169 XBT_DEBUG("See '%s'",mnt.name);
170 if(!strcmp(mount,mnt.name)){
171 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
176 xbt_die("Can't find mount '%s' for '%s'", mount, getName());
180 xbt_dict_t HostImpl::getMountedStorageList()
184 xbt_dict_t storage_list = xbt_dict_new_homogeneous(nullptr);
185 char *storage_name = nullptr;
187 xbt_dynar_foreach(storage_,i,mnt){
188 storage_name = (char *)static_cast<simgrid::surf::Storage*>(mnt.storage)->getName();
189 xbt_dict_set(storage_list,mnt.name,storage_name,nullptr);
194 xbt_dynar_t HostImpl::getAttachedStorageList()
196 xbt_lib_cursor_t cursor;
199 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), nullptr);
200 xbt_lib_foreach(storage_lib, cursor, key, data) {
201 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != nullptr) {
202 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));
203 if(!strcmp((const char*)storage->attach_,this->getName())){
204 xbt_dynar_push_as(result, void *, (void*)storage->getName());
211 Action *HostImpl::open(const char* fullpath) {
213 simgrid::surf::Storage *st = nullptr;
216 size_t longest_prefix_length = 0;
217 char *path = nullptr;
218 char *file_mount_name = nullptr;
219 char *mount_name = nullptr;
221 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
222 xbt_dynar_foreach(storage_,cursor,mnt)
224 XBT_DEBUG("See '%s'",mnt.name);
225 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
226 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
227 file_mount_name[strlen(mnt.name)] = '\0';
229 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
230 {/* The current mount name is found in the full path and is bigger than the previous*/
231 longest_prefix_length = strlen(mnt.name);
232 st = static_cast<simgrid::surf::Storage*>(mnt.storage);
234 free(file_mount_name);
236 if(longest_prefix_length>0)
237 { /* Mount point found, split fullpath into mount_name and path+filename*/
238 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
239 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
240 strncpy(mount_name, fullpath, longest_prefix_length+1);
241 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
242 path[strlen(fullpath)-longest_prefix_length] = '\0';
243 mount_name[longest_prefix_length] = '\0';
246 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
248 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
249 Action *action = st->open((const char*)mount_name, (const char*)path);
251 free((char*)mount_name);
255 Action *HostImpl::close(surf_file_t fd) {
256 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
257 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
258 return st->close(fd);
261 Action *HostImpl::read(surf_file_t fd, sg_size_t size) {
262 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
263 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
264 return st->read(fd, size);
267 Action *HostImpl::write(surf_file_t fd, sg_size_t size) {
268 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
269 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
270 return st->write(fd, size);
273 int HostImpl::unlink(surf_file_t fd) {
275 XBT_WARN("No such file descriptor. Impossible to unlink");
279 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
280 /* Check if the file is on this storage */
281 if (!xbt_dict_get_or_null(st->content_, fd->name)){
282 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
286 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
287 st->usedSize_ -= fd->size;
289 // Remove the file from storage
290 xbt_dict_remove(st->content_, fd->name);
300 sg_size_t HostImpl::getSize(surf_file_t fd){
304 xbt_dynar_t HostImpl::getInfo( surf_file_t fd)
306 simgrid::surf::Storage *st = findStorageOnMountList(fd->mount);
307 sg_size_t *psize = xbt_new(sg_size_t, 1);
309 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), nullptr);
310 xbt_dynar_push_as(info, sg_size_t *, psize);
311 xbt_dynar_push_as(info, void *, fd->mount);
312 xbt_dynar_push_as(info, void *, (void *)st->getName());
313 xbt_dynar_push_as(info, void *, st->typeId_);
314 xbt_dynar_push_as(info, void *, st->contentType_);
319 sg_size_t HostImpl::fileTell(surf_file_t fd){
320 return fd->current_position;
323 int HostImpl::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
327 fd->current_position = offset;
330 fd->current_position += offset;
333 fd->current_position = fd->size + offset;
340 int HostImpl::fileMove(surf_file_t fd, const char* fullpath){
341 /* Check if the new full path is on the same mount point */
342 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
343 sg_size_t *psize, *new_psize;
345 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->content_,
347 new_psize = xbt_new(sg_size_t, 1);
349 if (psize){// src file exists
350 xbt_dict_remove(findStorageOnMountList(fd->mount)->content_, fd->name);
351 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
352 strncpy(path, fullpath+strlen(fd->mount),
353 strlen(fullpath)-strlen(fd->mount)+1);
354 xbt_dict_set(findStorageOnMountList(fd->mount)->content_, path,
356 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
360 XBT_WARN("File %s doesn't exist", fd->name);
364 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
365 fullpath, fd->mount);
370 xbt_dynar_t HostImpl::getVms()
372 xbt_dynar_t dyn = xbt_dynar_new(sizeof(simgrid::surf::VirtualMachine*), nullptr);
374 for (VirtualMachine *ws_vm : VirtualMachine::allVms_) {
375 if (this == ws_vm->getPm()->extension<simgrid::surf::HostImpl>())
376 xbt_dynar_push(dyn, &ws_vm);
382 void HostImpl::getParams(vm_params_t params)
387 void HostImpl::setParams(vm_params_t params)
389 /* may check something here. */