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->cname());
27 XBT_DEBUG("suspend VM(%s), where %d processes exist", vm->cname(), 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->cname());
62 XBT_DEBUG("resume VM(%s), where %d processes exist", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list));
64 /* jump to vm_ws_resume() */
65 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->resume();
67 smx_actor_t smx_process, smx_process_safe;
68 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
69 XBT_DEBUG("resume %s", smx_process->name.c_str());
70 SIMIX_process_resume(smx_process);
75 * @brief Function to save a SIMIX VM host.
76 * This function is the same as vm_suspend, but the state of the VM is saved to the disk, and not preserved on memory.
77 * We can later restore it again.
79 * @param vm the vm host to save (a sg_host_t)
81 void SIMIX_vm_save(sg_host_t vm, smx_actor_t issuer)
83 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
84 THROWF(vm_error, 0, "VM(%s) is not running", vm->cname());
86 XBT_DEBUG("save VM(%s), where %d processes exist", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list));
88 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->save();
90 smx_actor_t smx_process, smx_process_safe;
91 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
92 XBT_DEBUG("suspend %s", smx_process->cname());
93 SIMIX_process_suspend(smx_process, issuer);
97 void simcall_HANDLER_vm_save(smx_simcall_t simcall, sg_host_t vm)
99 SIMIX_vm_save(vm, simcall->issuer);
103 * @brief Function to shutdown a SIMIX VM host. This function powers off the
104 * VM. All the processes on this VM will be killed. But, the state of the VM is
105 * preserved on memory. We can later start it again.
107 * @param vm the VM to shutdown (a sg_host_t)
109 void SIMIX_vm_shutdown(sg_host_t vm, smx_actor_t issuer)
111 if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
112 THROWF(vm_error, 0, "VM(%s) is not running", vm->cname());
114 XBT_DEBUG("shutdown VM %s, that contains %d processes", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list));
116 smx_actor_t smx_process, smx_process_safe;
117 xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
118 XBT_DEBUG("kill %s", smx_process->name.c_str());
119 SIMIX_process_kill(smx_process, issuer);
122 /* FIXME: we may have to do something at the surf layer, e.g., vcpu action */
123 static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->setState(SURF_VM_STATE_CREATED);
126 void simcall_HANDLER_vm_shutdown(smx_simcall_t simcall, sg_host_t vm)
128 SIMIX_vm_shutdown(vm, simcall->issuer);