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 "host_interface.hpp"
9 #include "simix/smx_private.h"
10 #include "cpu_cas01.hpp"
11 #include "simgrid/sg_config.h"
13 #include "network_interface.hpp"
14 #include "vm_interface.hpp"
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_host, surf,
17 "Logging specific to the SURF host module");
19 HostModel *surf_host_model = NULL;
25 surf_callback(void, Host*) hostCreatedCallbacks;
26 surf_callback(void, Host*) hostDestructedCallbacks;
27 surf_callback(void, Host*, e_surf_resource_state_t, e_surf_resource_state_t) hostStateChangedCallbacks;
28 surf_callback(void, HostAction*, e_surf_action_state_t, e_surf_action_state_t) hostActionStateChangedCallbacks;
30 void host_parse_init(sg_platf_host_cbarg_t host)
32 surf_host_model->createHost(host->id);
35 void host_add_traces(){
36 surf_host_model->addTraces();
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) {
54 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
55 xbt_assert(cpu_cas01, "cpu-less host");
57 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
58 // int is_active_old = constraint_is_active(cpu_cas01);
61 /* some tasks exist on this VM */
62 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
64 /* FIXME: we should use lmm_update_variable_weight() ? */
65 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
66 ws_vm->p_action->setPriority(1);
69 /* no task exits on this VM */
70 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
72 ws_vm->p_action->setPriority(0);
80 Host::Host(Model *model, const char *name, xbt_dict_t props,
81 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
82 : Resource(model, name, props)
83 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
86 surf_callback_emit(hostCreatedCallbacks, this);
89 Host::Host(Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
90 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
91 : Resource(model, name, props, constraint)
92 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
95 surf_callback_emit(hostCreatedCallbacks, this);
99 surf_callback_emit(hostDestructedCallbacks, this);
102 void Host::setState(e_surf_resource_state_t state){
103 e_surf_resource_state_t old = Resource::getState();
104 Resource::setState(state);
105 surf_callback_emit(hostStateChangedCallbacks, this, old, state);
106 p_cpu->setState(state);
109 xbt_dict_t Host::getProperties()
111 return p_cpu->getProperties();
114 Storage *Host::findStorageOnMountList(const char* mount)
120 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
121 xbt_dynar_foreach(p_storage,cursor,mnt)
123 XBT_DEBUG("See '%s'",mnt.name);
124 if(!strcmp(mount,mnt.name)){
125 st = static_cast<Storage*>(mnt.storage);
129 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
133 xbt_dict_t Host::getMountedStorageList()
137 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
138 char *storage_name = NULL;
140 xbt_dynar_foreach(p_storage,i,mnt){
141 storage_name = (char *)static_cast<Storage*>(mnt.storage)->getName();
142 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
147 xbt_dynar_t Host::getAttachedStorageList()
149 xbt_lib_cursor_t cursor;
152 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
153 xbt_lib_foreach(storage_lib, cursor, key, data) {
154 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
155 Storage *storage = static_cast<Storage*>(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL));
156 if(!strcmp((const char*)storage->p_attach,this->getName())){
157 xbt_dynar_push_as(result, void *, (void*)storage->getName());
164 Action *Host::open(const char* fullpath) {
169 size_t longest_prefix_length = 0;
171 char *file_mount_name = NULL;
172 char *mount_name = NULL;
174 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
175 xbt_dynar_foreach(p_storage,cursor,mnt)
177 XBT_DEBUG("See '%s'",mnt.name);
178 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
179 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
180 file_mount_name[strlen(mnt.name)] = '\0';
182 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
183 {/* The current mount name is found in the full path and is bigger than the previous*/
184 longest_prefix_length = strlen(mnt.name);
185 st = static_cast<Storage*>(mnt.storage);
187 free(file_mount_name);
189 if(longest_prefix_length>0)
190 { /* Mount point found, split fullpath into mount_name and path+filename*/
191 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
192 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
193 strncpy(mount_name, fullpath, longest_prefix_length+1);
194 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
195 path[strlen(fullpath)-longest_prefix_length] = '\0';
196 mount_name[longest_prefix_length] = '\0';
199 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
201 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
202 Action *action = st->open((const char*)mount_name, (const char*)path);
204 free((char*)mount_name);
208 Action *Host::close(surf_file_t fd) {
209 Storage *st = findStorageOnMountList(fd->mount);
210 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
211 return st->close(fd);
214 Action *Host::read(surf_file_t fd, sg_size_t size) {
215 Storage *st = findStorageOnMountList(fd->mount);
216 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
217 return st->read(fd, size);
220 Action *Host::write(surf_file_t fd, sg_size_t size) {
221 Storage *st = findStorageOnMountList(fd->mount);
222 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
223 return st->write(fd, size);
226 int Host::unlink(surf_file_t fd) {
228 XBT_WARN("No such file descriptor. Impossible to unlink");
232 Storage *st = findStorageOnMountList(fd->mount);
233 /* Check if the file is on this storage */
234 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
235 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
239 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
240 st->m_usedSize -= fd->size;
242 // Remove the file from storage
243 xbt_dict_remove(st->p_content, fd->name);
253 sg_size_t Host::getSize(surf_file_t fd){
257 xbt_dynar_t Host::getInfo( surf_file_t fd)
259 Storage *st = findStorageOnMountList(fd->mount);
260 sg_size_t *psize = xbt_new(sg_size_t, 1);
262 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
263 xbt_dynar_push_as(info, sg_size_t *, psize);
264 xbt_dynar_push_as(info, void *, fd->mount);
265 xbt_dynar_push_as(info, void *, (void *)st->getName());
266 xbt_dynar_push_as(info, void *, st->p_typeId);
267 xbt_dynar_push_as(info, void *, st->p_contentType);
272 sg_size_t Host::fileTell(surf_file_t fd){
273 return fd->current_position;
276 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
280 fd->current_position = offset;
283 fd->current_position += offset;
286 fd->current_position = fd->size + offset;
293 int Host::fileMove(surf_file_t fd, const char* fullpath){
294 /* Check if the new full path is on the same mount point */
295 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
296 sg_size_t *psize, *new_psize;
298 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
300 new_psize = xbt_new(sg_size_t, 1);
302 if (psize){// src file exists
303 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
304 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
305 strncpy(path, fullpath+strlen(fd->mount),
306 strlen(fullpath)-strlen(fd->mount)+1);
307 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
309 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
313 XBT_WARN("File %s doesn't exist", fd->name);
317 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
318 fullpath, fd->mount);
323 xbt_dynar_t Host::getVms()
325 xbt_dynar_t dyn = xbt_dynar_new(sizeof(VM*), NULL);
327 /* iterate for all virtual machines */
328 for (VMModel::vm_list_t::iterator iter =
329 VMModel::ws_vms.begin();
330 iter != VMModel::ws_vms.end(); ++iter) {
333 if (this == ws_vm->p_subWs)
334 xbt_dynar_push(dyn, &ws_vm);
340 void Host::getParams(vm_params_t params)
345 void Host::setParams(vm_params_t params)
347 /* may check something here. */
355 void HostAction::setState(e_surf_action_state_t state){
356 e_surf_action_state_t old = getState();
357 Action::setState(state);
358 surf_callback_emit(hostActionStateChangedCallbacks, this, old, state);