1 /* Copyright (c) 2007-2012. 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 "smx_private.h"
8 #include "xbt/sysdep.h"
13 //If you need to log some stuffs, just uncomment these two lines and uses XBT_DEBUG for instance
14 //XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_vm, simix,
15 // "Logging specific to SIMIX (vms)");
17 /* **** create a VM **** */
20 * \brief Internal function to create a SIMIX host.
21 * \param name name of the host to create
22 * \param data some user data (may be NULL)
24 smx_host_t SIMIX_vm_create(const char *name, smx_host_t ind_phys_host)
27 smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
30 // TODO check why we do not have any VM here and why we have the host_proc_hookup ?
33 smx_host->data = NULL;
34 smx_host->process_list =
35 xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
37 /* Update global variables */
38 xbt_lib_set(host_lib,name,SIMIX_HOST_LEVEL,smx_host);
40 /* Create surf associated resource */
41 // TODO change phys_host into the right workstation surf model
42 surf_vm_workstation_model->extension.vm_workstation.create(name, ind_phys_host);
44 return xbt_lib_get_elm_or_null(host_lib, name);
48 smx_host_t SIMIX_pre_vm_create(smx_simcall_t simcall, const char *name, smx_host_t ind_phys_host){
49 return SIMIX_vm_create(name, ind_phys_host);
53 /* **** start a VM **** */
54 int __can_be_started(smx_host_t vm){
55 // TODO add checking code related to overcommitment or not.
58 void SIMIX_vm_start(smx_host_t ind_vm){
60 //TODO only start the VM if you can
61 if (can_be_started(ind_vm))
62 SIMIX_set_vm_state(ind_vm, msg_vm_state_running);
64 THROWF(vm_error, 0, "The VM %s cannot be started", SIMIX_host_get_name(ind_vm));
67 void SIMIX_pre_vm_start(smx_simcall_t simcall, smx_host_t ind_vm){
71 /* ***** set/get state of a VM ***** */
72 void SIMIX_set_vm_state(smx_host_t ind_vm, int state){
73 surf_vm_workstation_model->extension.vm_workstation.set_state(ind_vm, state);
75 void SIMIX_prev_set_vm_state(smx_host_t ind_vm, int state){
76 SIMIX_set_vm_state(ind_vm, state);
79 int SIMIX_get_vm_state(smx_host_t ind_vm){
80 return surf_vm_workstation_model->extension.vm_workstation.get_state(ind_vm);
82 int SIMIX_pre_vm_state(smx_host_t ind_vm){
83 return SIMIX_get_vm_state(ind_vm);
87 * \brief Function to suspend a SIMIX VM host. This function powers off the
88 * VM. All the processes on this VM will be killed. But, the state of the VM is
89 * perserved. We can later start it again.
91 * \param host the vm host to suspend (a smx_host_t)
93 void SIMIX_vm_suspend(smx_host_t host)
95 /* TODO: check state */
97 XBT_DEBUG("%lu processes in the VM", xbt_swag_size(SIMIX_host_priv(host)->process_list));
99 smx_process_t smx_process, smx_process_safe;
100 xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(host)->process_list) {
101 XBT_DEBUG("suspend %s", SIMIX_host_get_name(host));
102 simcall_process_suspend(smx_process);
105 /* TODO: Using the variable of the MSG layer is not clean. */
106 SIMIX_set_vm_state(host, msg_vm_state_suspended);
109 void SIMIX_pre_vm_suspend(smx_simcall_t simcall, smx_host_t vm){
110 SIMIX_vm_suspend(vm);
114 * \brief Function to shutdown a SIMIX VM host. This function powers off the
115 * VM. All the processes on this VM will be killed. But, the state of the VM is
116 * perserved. We can later start it again.
118 * \param host the vm host to shutdown (a smx_host_t)
120 void SIMIX_vm_shutdown(smx_host_t host)
122 /* TODO: check state */
124 XBT_DEBUG("%lu processes in the VM", xbt_swag_size(SIMIX_host_priv(host)->process_list));
126 smx_process_t smx_process, smx_process_safe;
127 xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(host)->process_list) {
128 XBT_DEBUG("kill %s", SIMIX_host_get_name(host));
129 simcall_process_kill(smx_process);
132 /* TODO: Using the variable of the MSG layer is not clean. */
133 SIMIX_set_vm_state(host, msg_vm_state_sleeping);
136 void SIMIX_pre_vm_shutdown(smx_simcall_t simcall, smx_host_t vm){
137 SIMIX_vm_shutdown(vm);
141 * \brief Function to destroy a SIMIX VM host.
143 * \param host the vm host to destroy (a smx_host_t)
145 void SIMIX_vm_destroy(smx_host_t ind_vm)
147 /* this code basically performs a similar thing like SIMIX_host_destroy() */
149 xbt_assert((host != NULL), "Invalid parameters");
150 char *hostname = SIMIX_host_get_name(ind_vm);
152 smx_host_priv_t host_priv = SIMIX_host_priv(host);
154 /* this will call the registered callback function, i.e., SIMIX_host_destroy(). */
155 xbt_lib_unset(host_lib, hostname, SIMIX_HOST_LEVEL);
157 /* jump to vm_ws_destroy(). The surf level resource will be freed. */
158 surf_vm_workstation_model->extension.vm_workstation.destroy(ind_vm);
161 void SIMIX_pre_vm_destroy(smx_simcall_t simcall, smx_host_t vm){
162 SIMIX_vm_destroy(vm);