1 /* Copyright (c) 2007-2015. 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. */
7 #include "simgrid/s4u/VirtualMachine.hpp"
8 #include "smx_private.h"
9 #include "src/plugins/vm/VirtualMachineImpl.hpp"
10 #include "src/plugins/vm/VmHostExt.hpp"
11 #include "src/surf/HostImpl.hpp"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_vm, simix, "Logging specific to SIMIX Virtual Machines");
15 static long host_get_ramsize(sg_host_t vm, int *overcommit)
18 static_cast<simgrid::s4u::VirtualMachine*>(vm)->parameters(¶ms);
21 *overcommit = params.overcommit;
23 return params.ramsize;
27 * @brief Function to suspend a SIMIX VM host. This function stops the execution of the
28 * VM. All the processes on this VM will pause. The state of the VM is
29 * preserved on memory. We can later resume it again.
31 * @param vm the vm host to suspend (a sg_host_t)
33 void SIMIX_vm_suspend(sg_host_t vm, smx_actor_t issuer)
35 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
36 THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str());
38 XBT_DEBUG("suspend VM(%s), where %d processes exist", vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list));
40 /* jump to vm_ws_suspend. The state will be set. */
41 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->suspend();
43 smx_actor_t smx_process, smx_process_safe;
44 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
45 XBT_DEBUG("suspend %s", smx_process->name.c_str());
46 SIMIX_process_suspend(smx_process, issuer);
49 XBT_DEBUG("suspend all processes on the VM done done");
52 void simcall_HANDLER_vm_suspend(smx_simcall_t simcall, sg_host_t vm)
54 xbt_assert(simcall->issuer->host != vm, "cannot suspend the VM where I run");
56 SIMIX_vm_suspend(vm, simcall->issuer);
58 XBT_DEBUG("simcall_HANDLER_vm_suspend done");
63 * @brief Function to resume a SIMIX VM host. This function restart the execution of the
64 * VM. All the processes on this VM will run again.
66 * @param vm the vm host to resume (a sg_host_t)
68 void SIMIX_vm_resume(sg_host_t vm)
70 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_SUSPENDED)
71 THROWF(vm_error, 0, "VM(%s) was not suspended", vm->name().c_str());
73 XBT_DEBUG("resume VM(%s), where %d processes exist",
74 vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list));
76 /* jump to vm_ws_resume() */
77 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->resume();
79 smx_actor_t smx_process, smx_process_safe;
80 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
81 XBT_DEBUG("resume %s", smx_process->name.c_str());
82 SIMIX_process_resume(smx_process);
87 * @brief Function to save a SIMIX VM host.
88 * This function is the same as vm_suspend, but the state of the VM is saved to the disk, and not preserved on memory.
89 * We can later restore it again.
91 * @param vm the vm host to save (a sg_host_t)
93 void SIMIX_vm_save(sg_host_t vm, smx_actor_t issuer)
95 const char *name = sg_host_get_name(vm);
97 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
98 THROWF(vm_error, 0, "VM(%s) is not running", name);
100 XBT_DEBUG("save VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(vm)->process_list));
102 /* jump to vm_ws_save() */
103 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->save();
105 smx_actor_t smx_process, smx_process_safe;
106 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
107 XBT_DEBUG("suspend %s", smx_process->name.c_str());
108 SIMIX_process_suspend(smx_process, issuer);
112 void simcall_HANDLER_vm_save(smx_simcall_t simcall, sg_host_t vm)
114 SIMIX_vm_save(vm, simcall->issuer);
118 * @brief Function to shutdown a SIMIX VM host. This function powers off the
119 * VM. All the processes on this VM will be killed. But, the state of the VM is
120 * preserved on memory. We can later start it again.
122 * @param vm the VM to shutdown (a sg_host_t)
124 void SIMIX_vm_shutdown(sg_host_t vm, smx_actor_t issuer)
126 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
127 THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str());
129 XBT_DEBUG("shutdown VM %s, that contains %d processes",
130 vm->name().c_str(),xbt_swag_size(sg_host_simix(vm)->process_list));
132 smx_actor_t smx_process, smx_process_safe;
133 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
134 XBT_DEBUG("kill %s", smx_process->name.c_str());
135 SIMIX_process_kill(smx_process, issuer);
138 /* FIXME: we may have to do something at the surf layer, e.g., vcpu action */
139 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->setState(SURF_VM_STATE_CREATED);
142 void simcall_HANDLER_vm_shutdown(smx_simcall_t simcall, sg_host_t vm)
144 SIMIX_vm_shutdown(vm, simcall->issuer);