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 "src/simix/smx_private.h"
10 #include "cpu_cas01.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 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_add_traces(){
31 surf_host_model->addTraces();
37 /* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
38 * constraint (capacity) of the VM in the PM layer. If the VM does not have any
39 * active task, the dummy CPU action must be deactivated, so that the VM does
40 * not get any CPU share in the PM layer. */
41 void HostModel::adjustWeightOfDummyCpuActions()
43 /* iterate for all virtual machines */
44 for (VMModel::vm_list_t::iterator iter =
45 VMModel::ws_vms.begin();
46 iter != VMModel::ws_vms.end(); ++iter) {
48 VirtualMachine *ws_vm = &*iter;
49 CpuCas01 *cpu_cas01 = static_cast<CpuCas01*>(ws_vm->p_cpu);
50 xbt_assert(cpu_cas01, "cpu-less host");
52 int is_active = lmm_constraint_used(cpu_cas01->getModel()->getMaxminSystem(), cpu_cas01->getConstraint());
53 // int is_active_old = constraint_is_active(cpu_cas01);
56 /* some tasks exist on this VM */
57 XBT_DEBUG("set the weight of the dummy CPU action on PM to 1");
59 /* FIXME: we should use lmm_update_variable_weight() ? */
60 /* FIXME: If we assign 1.05 and 0.05, the system makes apparently wrong values. */
61 ws_vm->p_action->setPriority(1);
64 /* no task exits on this VM */
65 XBT_DEBUG("set the weight of the dummy CPU action on PM to 0");
67 ws_vm->p_action->setPriority(0);
75 Host::Host(Model *model, const char *name, xbt_dict_t props,
76 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
77 : Resource(model, name, props)
78 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
83 Host::Host(Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
84 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
85 : Resource(model, name, props, constraint)
86 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
92 surf_callback_emit(hostDestructedCallbacks, this);
95 void Host::setState(e_surf_resource_state_t state){
96 e_surf_resource_state_t old = Resource::getState();
97 Resource::setState(state);
98 surf_callback_emit(hostStateChangedCallbacks, this, old, state);
99 p_cpu->setState(state);
102 xbt_dict_t Host::getProperties()
104 return p_cpu->getProperties();
107 Storage *Host::findStorageOnMountList(const char* mount)
113 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
114 xbt_dynar_foreach(p_storage,cursor,mnt)
116 XBT_DEBUG("See '%s'",mnt.name);
117 if(!strcmp(mount,mnt.name)){
118 st = static_cast<Storage*>(mnt.storage);
122 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
126 xbt_dict_t Host::getMountedStorageList()
130 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
131 char *storage_name = NULL;
133 xbt_dynar_foreach(p_storage,i,mnt){
134 storage_name = (char *)static_cast<Storage*>(mnt.storage)->getName();
135 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
140 xbt_dynar_t Host::getAttachedStorageList()
142 xbt_lib_cursor_t cursor;
145 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
146 xbt_lib_foreach(storage_lib, cursor, key, data) {
147 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
148 Storage *storage = static_cast<Storage*>(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL));
149 if(!strcmp((const char*)storage->p_attach,this->getName())){
150 xbt_dynar_push_as(result, void *, (void*)storage->getName());
157 Action *Host::open(const char* fullpath) {
162 size_t longest_prefix_length = 0;
164 char *file_mount_name = NULL;
165 char *mount_name = NULL;
167 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
168 xbt_dynar_foreach(p_storage,cursor,mnt)
170 XBT_DEBUG("See '%s'",mnt.name);
171 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
172 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
173 file_mount_name[strlen(mnt.name)] = '\0';
175 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
176 {/* The current mount name is found in the full path and is bigger than the previous*/
177 longest_prefix_length = strlen(mnt.name);
178 st = static_cast<Storage*>(mnt.storage);
180 free(file_mount_name);
182 if(longest_prefix_length>0)
183 { /* Mount point found, split fullpath into mount_name and path+filename*/
184 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
185 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
186 strncpy(mount_name, fullpath, longest_prefix_length+1);
187 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
188 path[strlen(fullpath)-longest_prefix_length] = '\0';
189 mount_name[longest_prefix_length] = '\0';
192 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
194 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
195 Action *action = st->open((const char*)mount_name, (const char*)path);
197 free((char*)mount_name);
201 Action *Host::close(surf_file_t fd) {
202 Storage *st = findStorageOnMountList(fd->mount);
203 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
204 return st->close(fd);
207 Action *Host::read(surf_file_t fd, sg_size_t size) {
208 Storage *st = findStorageOnMountList(fd->mount);
209 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
210 return st->read(fd, size);
213 Action *Host::write(surf_file_t fd, sg_size_t size) {
214 Storage *st = findStorageOnMountList(fd->mount);
215 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
216 return st->write(fd, size);
219 int Host::unlink(surf_file_t fd) {
221 XBT_WARN("No such file descriptor. Impossible to unlink");
225 Storage *st = findStorageOnMountList(fd->mount);
226 /* Check if the file is on this storage */
227 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
228 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
232 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
233 st->m_usedSize -= fd->size;
235 // Remove the file from storage
236 xbt_dict_remove(st->p_content, fd->name);
246 sg_size_t Host::getSize(surf_file_t fd){
250 xbt_dynar_t Host::getInfo( surf_file_t fd)
252 Storage *st = findStorageOnMountList(fd->mount);
253 sg_size_t *psize = xbt_new(sg_size_t, 1);
255 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
256 xbt_dynar_push_as(info, sg_size_t *, psize);
257 xbt_dynar_push_as(info, void *, fd->mount);
258 xbt_dynar_push_as(info, void *, (void *)st->getName());
259 xbt_dynar_push_as(info, void *, st->p_typeId);
260 xbt_dynar_push_as(info, void *, st->p_contentType);
265 sg_size_t Host::fileTell(surf_file_t fd){
266 return fd->current_position;
269 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
273 fd->current_position = offset;
276 fd->current_position += offset;
279 fd->current_position = fd->size + offset;
286 int Host::fileMove(surf_file_t fd, const char* fullpath){
287 /* Check if the new full path is on the same mount point */
288 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
289 sg_size_t *psize, *new_psize;
291 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
293 new_psize = xbt_new(sg_size_t, 1);
295 if (psize){// src file exists
296 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
297 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
298 strncpy(path, fullpath+strlen(fd->mount),
299 strlen(fullpath)-strlen(fd->mount)+1);
300 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
302 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
306 XBT_WARN("File %s doesn't exist", fd->name);
310 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
311 fullpath, fd->mount);
316 xbt_dynar_t Host::getVms()
318 xbt_dynar_t dyn = xbt_dynar_new(sizeof(VirtualMachine*), NULL);
320 /* iterate for all virtual machines */
321 for (VMModel::vm_list_t::iterator iter =
322 VMModel::ws_vms.begin();
323 iter != VMModel::ws_vms.end(); ++iter) {
325 VirtualMachine *ws_vm = &*iter;
326 if (this == ws_vm->p_subWs)
327 xbt_dynar_push(dyn, &ws_vm);
333 void Host::getParams(vm_params_t params)
338 void Host::setParams(vm_params_t params)
340 /* may check something here. */
348 void HostAction::setState(e_surf_action_state_t state){
349 e_surf_action_state_t old = getState();
350 Action::setState(state);
351 surf_callback_emit(hostActionStateChangedCallbacks, this, old, state);