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_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) {
53 VirtualMachine *ws_vm = &*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)
88 Host::Host(Model *model, const char *name, xbt_dict_t props, lmm_constraint_t constraint,
89 xbt_dynar_t storage, RoutingEdge *netElm, Cpu *cpu)
90 : Resource(model, name, props, constraint)
91 , p_storage(storage), p_netElm(netElm), p_cpu(cpu)
97 surf_callback_emit(hostDestructedCallbacks, this);
100 void Host::setState(e_surf_resource_state_t state){
101 e_surf_resource_state_t old = Resource::getState();
102 Resource::setState(state);
103 surf_callback_emit(hostStateChangedCallbacks, this, old, state);
104 p_cpu->setState(state);
107 xbt_dict_t Host::getProperties()
109 return p_cpu->getProperties();
112 Storage *Host::findStorageOnMountList(const char* mount)
118 XBT_DEBUG("Search for storage name '%s' on '%s'", mount, getName());
119 xbt_dynar_foreach(p_storage,cursor,mnt)
121 XBT_DEBUG("See '%s'",mnt.name);
122 if(!strcmp(mount,mnt.name)){
123 st = static_cast<Storage*>(mnt.storage);
127 if(!st) xbt_die("Can't find mount '%s' for '%s'", mount, getName());
131 xbt_dict_t Host::getMountedStorageList()
135 xbt_dict_t storage_list = xbt_dict_new_homogeneous(NULL);
136 char *storage_name = NULL;
138 xbt_dynar_foreach(p_storage,i,mnt){
139 storage_name = (char *)static_cast<Storage*>(mnt.storage)->getName();
140 xbt_dict_set(storage_list,mnt.name,storage_name,NULL);
145 xbt_dynar_t Host::getAttachedStorageList()
147 xbt_lib_cursor_t cursor;
150 xbt_dynar_t result = xbt_dynar_new(sizeof(void*), NULL);
151 xbt_lib_foreach(storage_lib, cursor, key, data) {
152 if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
153 Storage *storage = static_cast<Storage*>(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL));
154 if(!strcmp((const char*)storage->p_attach,this->getName())){
155 xbt_dynar_push_as(result, void *, (void*)storage->getName());
162 Action *Host::open(const char* fullpath) {
167 size_t longest_prefix_length = 0;
169 char *file_mount_name = NULL;
170 char *mount_name = NULL;
172 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, getName());
173 xbt_dynar_foreach(p_storage,cursor,mnt)
175 XBT_DEBUG("See '%s'",mnt.name);
176 file_mount_name = (char *) xbt_malloc ((strlen(mnt.name)+1));
177 strncpy(file_mount_name,fullpath,strlen(mnt.name)+1);
178 file_mount_name[strlen(mnt.name)] = '\0';
180 if(!strcmp(file_mount_name,mnt.name) && strlen(mnt.name)>longest_prefix_length)
181 {/* The current mount name is found in the full path and is bigger than the previous*/
182 longest_prefix_length = strlen(mnt.name);
183 st = static_cast<Storage*>(mnt.storage);
185 free(file_mount_name);
187 if(longest_prefix_length>0)
188 { /* Mount point found, split fullpath into mount_name and path+filename*/
189 path = (char *) xbt_malloc ((strlen(fullpath)-longest_prefix_length+1));
190 mount_name = (char *) xbt_malloc ((longest_prefix_length+1));
191 strncpy(mount_name, fullpath, longest_prefix_length+1);
192 strncpy(path, fullpath+longest_prefix_length, strlen(fullpath)-longest_prefix_length+1);
193 path[strlen(fullpath)-longest_prefix_length] = '\0';
194 mount_name[longest_prefix_length] = '\0';
197 xbt_die("Can't find mount point for '%s' on '%s'", fullpath, getName());
199 XBT_DEBUG("OPEN %s on disk '%s'",path, st->getName());
200 Action *action = st->open((const char*)mount_name, (const char*)path);
202 free((char*)mount_name);
206 Action *Host::close(surf_file_t fd) {
207 Storage *st = findStorageOnMountList(fd->mount);
208 XBT_DEBUG("CLOSE %s on disk '%s'",fd->name, st->getName());
209 return st->close(fd);
212 Action *Host::read(surf_file_t fd, sg_size_t size) {
213 Storage *st = findStorageOnMountList(fd->mount);
214 XBT_DEBUG("READ %s on disk '%s'",fd->name, st->getName());
215 return st->read(fd, size);
218 Action *Host::write(surf_file_t fd, sg_size_t size) {
219 Storage *st = findStorageOnMountList(fd->mount);
220 XBT_DEBUG("WRITE %s on disk '%s'",fd->name, st->getName());
221 return st->write(fd, size);
224 int Host::unlink(surf_file_t fd) {
226 XBT_WARN("No such file descriptor. Impossible to unlink");
230 Storage *st = findStorageOnMountList(fd->mount);
231 /* Check if the file is on this storage */
232 if (!xbt_dict_get_or_null(st->p_content, fd->name)){
233 XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name,
237 XBT_DEBUG("UNLINK %s on disk '%s'",fd->name, st->getName());
238 st->m_usedSize -= fd->size;
240 // Remove the file from storage
241 xbt_dict_remove(st->p_content, fd->name);
251 sg_size_t Host::getSize(surf_file_t fd){
255 xbt_dynar_t Host::getInfo( surf_file_t fd)
257 Storage *st = findStorageOnMountList(fd->mount);
258 sg_size_t *psize = xbt_new(sg_size_t, 1);
260 xbt_dynar_t info = xbt_dynar_new(sizeof(void*), NULL);
261 xbt_dynar_push_as(info, sg_size_t *, psize);
262 xbt_dynar_push_as(info, void *, fd->mount);
263 xbt_dynar_push_as(info, void *, (void *)st->getName());
264 xbt_dynar_push_as(info, void *, st->p_typeId);
265 xbt_dynar_push_as(info, void *, st->p_contentType);
270 sg_size_t Host::fileTell(surf_file_t fd){
271 return fd->current_position;
274 int Host::fileSeek(surf_file_t fd, sg_offset_t offset, int origin){
278 fd->current_position = offset;
281 fd->current_position += offset;
284 fd->current_position = fd->size + offset;
291 int Host::fileMove(surf_file_t fd, const char* fullpath){
292 /* Check if the new full path is on the same mount point */
293 if(!strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
294 sg_size_t *psize, *new_psize;
296 xbt_dict_get_or_null(findStorageOnMountList(fd->mount)->p_content,
298 new_psize = xbt_new(sg_size_t, 1);
300 if (psize){// src file exists
301 xbt_dict_remove(findStorageOnMountList(fd->mount)->p_content, fd->name);
302 char *path = (char *) xbt_malloc ((strlen(fullpath)-strlen(fd->mount)+1));
303 strncpy(path, fullpath+strlen(fd->mount),
304 strlen(fullpath)-strlen(fd->mount)+1);
305 xbt_dict_set(findStorageOnMountList(fd->mount)->p_content, path,
307 XBT_DEBUG("Move file from %s to %s, size '%llu'",fd->name, fullpath, *psize);
311 XBT_WARN("File %s doesn't exist", fd->name);
315 XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.",
316 fullpath, fd->mount);
321 xbt_dynar_t Host::getVms()
323 xbt_dynar_t dyn = xbt_dynar_new(sizeof(VirtualMachine*), NULL);
325 /* iterate for all virtual machines */
326 for (VMModel::vm_list_t::iterator iter =
327 VMModel::ws_vms.begin();
328 iter != VMModel::ws_vms.end(); ++iter) {
330 VirtualMachine *ws_vm = &*iter;
331 if (this == ws_vm->p_subWs)
332 xbt_dynar_push(dyn, &ws_vm);
338 void Host::getParams(vm_params_t params)
343 void Host::setParams(vm_params_t params)
345 /* may check something here. */
353 void HostAction::setState(e_surf_action_state_t state){
354 e_surf_action_state_t old = getState();
355 Action::setState(state);
356 surf_callback_emit(hostActionStateChangedCallbacks, this, old, state);