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");
16 * @brief Function to suspend a SIMIX VM host. This function stops the execution of the
17 * VM. All the processes on this VM will pause. The state of the VM is
18 * preserved on memory. We can later resume it again.
20 * @param vm the vm host to suspend (a sg_host_t)
22 void SIMIX_vm_suspend(sg_host_t vm, smx_actor_t issuer)
24 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
25 THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str());
27 XBT_DEBUG("suspend VM(%s), where %d processes exist", vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list));
29 /* jump to vm_ws_suspend. The state will be set. */
30 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->suspend();
32 smx_actor_t smx_process, smx_process_safe;
33 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
34 XBT_DEBUG("suspend %s", smx_process->name.c_str());
35 SIMIX_process_suspend(smx_process, issuer);
38 XBT_DEBUG("suspend all processes on the VM done done");
41 void simcall_HANDLER_vm_suspend(smx_simcall_t simcall, sg_host_t vm)
43 xbt_assert(simcall->issuer->host != vm, "cannot suspend the VM where I run");
45 SIMIX_vm_suspend(vm, simcall->issuer);
47 XBT_DEBUG("simcall_HANDLER_vm_suspend done");
52 * @brief Function to resume a SIMIX VM host. This function restart the execution of the
53 * VM. All the processes on this VM will run again.
55 * @param vm the vm host to resume (a sg_host_t)
57 void SIMIX_vm_resume(sg_host_t vm)
59 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_SUSPENDED)
60 THROWF(vm_error, 0, "VM(%s) was not suspended", vm->name().c_str());
62 XBT_DEBUG("resume VM(%s), where %d processes exist",
63 vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list));
65 /* jump to vm_ws_resume() */
66 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->resume();
68 smx_actor_t smx_process, smx_process_safe;
69 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
70 XBT_DEBUG("resume %s", smx_process->name.c_str());
71 SIMIX_process_resume(smx_process);
76 * @brief Function to save a SIMIX VM host.
77 * This function is the same as vm_suspend, but the state of the VM is saved to the disk, and not preserved on memory.
78 * We can later restore it again.
80 * @param vm the vm host to save (a sg_host_t)
82 void SIMIX_vm_save(sg_host_t vm, smx_actor_t issuer)
84 const char *name = sg_host_get_name(vm);
86 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
87 THROWF(vm_error, 0, "VM(%s) is not running", name);
89 XBT_DEBUG("save VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(vm)->process_list));
91 /* jump to vm_ws_save() */
92 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->save();
94 smx_actor_t smx_process, smx_process_safe;
95 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
96 XBT_DEBUG("suspend %s", smx_process->name.c_str());
97 SIMIX_process_suspend(smx_process, issuer);
101 void simcall_HANDLER_vm_save(smx_simcall_t simcall, sg_host_t vm)
103 SIMIX_vm_save(vm, simcall->issuer);
107 * @brief Function to shutdown a SIMIX VM host. This function powers off the
108 * VM. All the processes on this VM will be killed. But, the state of the VM is
109 * preserved on memory. We can later start it again.
111 * @param vm the VM to shutdown (a sg_host_t)
113 void SIMIX_vm_shutdown(sg_host_t vm, smx_actor_t issuer)
115 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
116 THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str());
118 XBT_DEBUG("shutdown VM %s, that contains %d processes",
119 vm->name().c_str(),xbt_swag_size(sg_host_simix(vm)->process_list));
121 smx_actor_t smx_process, smx_process_safe;
122 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
123 XBT_DEBUG("kill %s", smx_process->name.c_str());
124 SIMIX_process_kill(smx_process, issuer);
127 /* FIXME: we may have to do something at the surf layer, e.g., vcpu action */
128 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->setState(SURF_VM_STATE_CREATED);
131 void simcall_HANDLER_vm_shutdown(smx_simcall_t simcall, sg_host_t vm)
133 SIMIX_vm_shutdown(vm, simcall->issuer);