-/* Copyright (c) 2013-2016. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2013-2019. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "src/plugins/vm/VirtualMachineImpl.hpp"
+#include "src/simix/smx_private.hpp"
+
#include <string>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_host, surf, "Logging specific to the SURF host module");
* Model *
*********/
-/* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
- * constraint (capacity) of the VM in the PM layer. If the VM does not have any
- * active task, the dummy CPU action must be deactivated, so that the VM does
- * not get any CPU share in the PM layer. */
-void HostModel::ignoreEmptyVmInPmLMM()
-{
- /* iterate for all virtual machines */
- for (s4u::VirtualMachine* ws_vm : vm::VirtualMachineImpl::allVms_) {
- Cpu* cpu = ws_vm->pimpl_cpu;
- int active_tasks = lmm_constraint_get_variable_amount(cpu->constraint());
-
- /* The impact of the VM over its PM is the min between its vCPU amount and the amount of tasks it contains */
- int impact = std::min(active_tasks, ws_vm->pimpl_vm_->coreAmount());
-
- XBT_DEBUG("set the weight of the dummy CPU action of VM%p on PM to %d (#tasks: %d)", ws_vm, impact, active_tasks);
- ws_vm->pimpl_vm_->action_->setPriority(impact);
- }
-}
-
/* Helper function for executeParallelTask */
-static inline double has_cost(double* array, int pos)
+static inline double has_cost(double* array, size_t pos)
{
if (array)
return array[pos];
else
return -1.0;
}
-Action* HostModel::executeParallelTask(int host_nb, simgrid::s4u::Host** host_list, double* flops_amount,
- double* bytes_amount, double rate)
+
+kernel::resource::Action* HostModel::execute_parallel(size_t host_nb, s4u::Host** host_list, double* flops_amount,
+ double* bytes_amount, double rate)
{
- Action* action = nullptr;
- if ((host_nb == 1) && (has_cost(bytes_amount, 0) <= 0)) {
+ kernel::resource::Action* action = nullptr;
+ if ((host_nb == 1) && (has_cost(bytes_amount, 0) <= 0) && (has_cost(flops_amount, 0) > 0)) {
action = host_list[0]->pimpl_cpu->execution_start(flops_amount[0]);
} else if ((host_nb == 1) && (has_cost(flops_amount, 0) <= 0)) {
action = surf_network_model->communicate(host_list[0], host_list[0], bytes_amount[0], rate);
int nb = 0;
double value = 0.0;
- for (int i = 0; i < host_nb * host_nb; i++) {
+ for (size_t i = 0; i < host_nb * host_nb; i++) {
if (has_cost(bytes_amount, i) > 0.0) {
nb++;
value = has_cost(bytes_amount, i);
xbt_die("Cannot have a communication that is not a simple point-to-point in this model. You should consider "
"using the ptask model");
}
- } else
+ } else {
xbt_die(
"This model only accepts one of the following. You should consider using the ptask model for the other cases.\n"
" - execution with one host only and no communication\n"
" - Self-comms with one host only\n"
" - Communications with two hosts and no computation");
- xbt_free(host_list);
+ }
return action;
}
piface_->pimpl_ = this;
}
-simgrid::surf::StorageImpl* HostImpl::findStorageOnMountList(const char* mount)
-{
- XBT_DEBUG("Search for storage name '%s' on '%s'", mount, piface_->cname());
- if (storage_.find(mount) == storage_.end())
- xbt_die("Can't find mount '%s' for '%s'", mount, piface_->cname());
-
- return storage_.at(mount);
-}
-
-xbt_dict_t HostImpl::getMountedStorageList()
+HostImpl::~HostImpl()
{
- xbt_dict_t storage_list = xbt_dict_new_homogeneous(nullptr);
- char* storage_name = nullptr;
+ /* All processes should be gone when the host is turned off (by the end of the simulation). */
+ if (not process_list_.empty()) {
+ std::string msg = std::string("Shutting down host, but it's not empty:");
+ for (auto const& process : process_list_)
+ msg += "\n\t" + std::string(process.get_name());
- for (auto mnt : storage_) {
- storage_name = (char*)mnt.second->cname();
- xbt_dict_set(storage_list, mnt.first.c_str(), storage_name, nullptr);
+ SIMIX_display_process_status();
+ THROWF(arg_error, 0, "%s", msg.c_str());
}
- return storage_list;
-}
-
-void HostImpl::getAttachedStorageList(std::vector<const char*>* storages)
-{
- for (auto s : storage_)
- if (not strcmp(static_cast<const char*>(s.second->attach_), piface_->cname()))
- storages->push_back(s.second->piface_.name());
-}
-
-Action* HostImpl::open(const char* fullpath)
-{
- simgrid::surf::StorageImpl* st = nullptr;
- size_t longest_prefix_length = 0;
- std::string path;
- std::string mount_name;
-
- XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath, piface_->cname());
- for (auto mnt : storage_) {
- XBT_DEBUG("See '%s'", mnt.first.c_str());
- std::string file_mount_name = std::string(fullpath).substr(0, mnt.first.size());
-
- if (file_mount_name == mnt.first && mnt.first.length() > longest_prefix_length) {
- /* The current mount name is found in the full path and is bigger than the previous*/
- longest_prefix_length = mnt.first.length();
- st = mnt.second;
- }
+ for (auto const& arg : actors_at_boot_)
+ delete arg;
+ actors_at_boot_.clear();
+}
+
+/** Re-starts all the actors that are marked as restartable.
+ *
+ * Weird things will happen if you turn on a host that is already on. S4U is fool-proof, not this.
+ */
+void HostImpl::turn_on()
+{
+ for (auto const& arg : actors_at_boot_) {
+ XBT_DEBUG("Booting Actor %s(%s) right now", arg->name.c_str(), arg->host->get_cname());
+ smx_actor_t actor =
+ SIMIX_process_create(arg->name.c_str(), arg->code, nullptr, arg->host, arg->properties.get(), nullptr);
+ if (arg->kill_time >= 0)
+ simcall_process_set_kill_time(actor, arg->kill_time);
+ if (arg->auto_restart)
+ actor->auto_restart_ = arg->auto_restart;
+ if (arg->daemon_)
+ actor->daemonize();
}
- if (longest_prefix_length > 0) { /* Mount point found, split fullpath into mount_name and path+filename*/
- mount_name = std::string(fullpath).substr(0, longest_prefix_length);
- path = std::string(fullpath).substr(longest_prefix_length, strlen(fullpath));
- } else
- xbt_die("Can't find mount point for '%s' on '%s'", fullpath, piface_->cname());
-
- XBT_DEBUG("OPEN %s on disk '%s'", path.c_str(), st->cname());
- Action* action = st->open(mount_name.c_str(), path.c_str());
- return action;
}
-Action* HostImpl::close(surf_file_t fd)
+/** Kill all actors hosted here */
+void HostImpl::turn_off()
{
- simgrid::surf::StorageImpl* st = findStorageOnMountList(fd->mount);
- XBT_DEBUG("CLOSE %s on disk '%s'", fd->name, st->cname());
- return st->close(fd);
-}
-
-Action* HostImpl::read(surf_file_t fd, sg_size_t size)
-{
- simgrid::surf::StorageImpl* st = findStorageOnMountList(fd->mount);
- XBT_DEBUG("READ %s on disk '%s'", fd->name, st->cname());
- return st->read(fd, size);
-}
-
-Action* HostImpl::write(surf_file_t fd, sg_size_t size)
-{
- simgrid::surf::StorageImpl* st = findStorageOnMountList(fd->mount);
- XBT_DEBUG("WRITE %s on disk '%s'", fd->name, st->cname());
- return st->write(fd, size);
-}
-
-int HostImpl::unlink(surf_file_t fd)
-{
- if (not fd) {
- XBT_WARN("No such file descriptor. Impossible to unlink");
- return -1;
- } else {
-
- simgrid::surf::StorageImpl* st = findStorageOnMountList(fd->mount);
- /* Check if the file is on this storage */
- if (st->content_->find(fd->name) == st->content_->end()) {
- XBT_WARN("File %s is not on disk %s. Impossible to unlink", fd->name, st->cname());
- return -1;
- } else {
- XBT_DEBUG("UNLINK %s on disk '%s'", fd->name, st->cname());
- st->usedSize_ -= fd->size;
-
- // Remove the file from storage
- sg_size_t* psize = st->content_->at(fd->name);
- delete psize;
- st->content_->erase(fd->name);
-
- xbt_free(fd->name);
- xbt_free(fd->mount);
- xbt_free(fd);
- return 0;
+ if (not process_list_.empty()) {
+ for (auto& actor : process_list_) {
+ XBT_DEBUG("Killing Actor %s@%s on behalf of %s which turned off that host.", actor.get_cname(),
+ actor.host_->get_cname(), SIMIX_process_self()->get_cname());
+ SIMIX_process_kill(&actor, SIMIX_process_self());
}
}
+ // When a host is turned off, we want to keep only the actors that should restart for when it will boot again.
+ // Then get rid of the others.
+ auto elm = remove_if(begin(actors_at_boot_), end(actors_at_boot_), [](kernel::actor::ProcessArg* arg) {
+ if (arg->auto_restart)
+ return false;
+ delete arg;
+ return true;
+ });
+ actors_at_boot_.erase(elm, end(actors_at_boot_));
}
-sg_size_t HostImpl::getSize(surf_file_t fd)
-{
- return fd->size;
-}
-
-xbt_dynar_t HostImpl::getInfo(surf_file_t fd)
+std::vector<s4u::ActorPtr> HostImpl::get_all_actors()
{
- simgrid::surf::StorageImpl* st = findStorageOnMountList(fd->mount);
- sg_size_t* psize = xbt_new(sg_size_t, 1);
- *psize = fd->size;
- xbt_dynar_t info = xbt_dynar_new(sizeof(void*), nullptr);
- xbt_dynar_push_as(info, sg_size_t*, psize);
- xbt_dynar_push_as(info, void*, fd->mount);
- xbt_dynar_push_as(info, void*, (void*)st->cname());
- xbt_dynar_push_as(info, void*, st->typeId_);
-
- return info;
+ std::vector<s4u::ActorPtr> res;
+ for (auto& actor : process_list_)
+ res.push_back(actor.ciface());
+ return res;
}
-
-sg_size_t HostImpl::fileTell(surf_file_t fd)
+size_t HostImpl::get_actor_count()
{
- return fd->current_position;
+ return process_list_.size();
}
-
-int HostImpl::fileSeek(surf_file_t fd, sg_offset_t offset, int origin)
+std::vector<const char*> HostImpl::get_attached_storages()
{
- switch (origin) {
- case SEEK_SET:
- fd->current_position = offset;
- return 0;
- case SEEK_CUR:
- fd->current_position += offset;
- return 0;
- case SEEK_END:
- fd->current_position = fd->size + offset;
- return 0;
- default:
- return -1;
- }
-}
-
-int HostImpl::fileMove(surf_file_t fd, const char* fullpath)
-{
- /* Check if the new full path is on the same mount point */
- if (not strncmp((const char*)fd->mount, fullpath, strlen(fd->mount))) {
- std::map<std::string, sg_size_t*>* content = findStorageOnMountList(fd->mount)->content_;
- if (content->find(fd->name) != content->end()) { // src file exists
- sg_size_t* psize = content->at(std::string(fd->name));
- sg_size_t* new_psize = new sg_size_t;
- *new_psize = *psize;
- delete psize;
- content->erase(fd->name);
- std::string path = std::string(fullpath).substr(strlen(fd->mount), strlen(fullpath));
- content->insert({path.c_str(), new_psize});
- XBT_DEBUG("Move file from %s to %s, size '%llu'", fd->name, fullpath, *psize);
- return 0;
- } else {
- XBT_WARN("File %s doesn't exist", fd->name);
- return -1;
- }
- } else {
- XBT_WARN("New full path %s is not on the same mount point: %s. Action has been canceled.", fullpath, fd->mount);
- return -1;
- }
+ std::vector<const char*> storages;
+ for (auto const& s : storage_)
+ if (s.second->getHost() == piface_->get_cname())
+ storages.push_back(s.second->piface_.get_cname());
+ return storages;
}
}
