1 /* Copyright (c) 2015-2019. 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. */
6 #include "simgrid/plugins/file_system.h"
7 #include "simgrid/s4u/Actor.hpp"
8 #include "simgrid/s4u/Engine.hpp"
9 #include "src/surf/HostImpl.hpp"
10 #include "src/surf/xml/platf_private.hpp"
11 #include "xbt/config.hpp"
14 #include <boost/algorithm/string.hpp>
15 #include <boost/algorithm/string/join.hpp>
16 #include <boost/algorithm/string/split.hpp>
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_file, s4u, "S4U files");
21 int sg_storage_max_file_descriptors = 1024;
25 simgrid::xbt::Extension<Disk, FileSystemDiskExt> FileSystemDiskExt::EXTENSION_ID;
26 simgrid::xbt::Extension<Storage, FileSystemStorageExt> FileSystemStorageExt::EXTENSION_ID;
27 simgrid::xbt::Extension<Host, FileDescriptorHostExt> FileDescriptorHostExt::EXTENSION_ID;
29 Storage* File::find_local_storage_on(Host* host)
31 Storage* st = nullptr;
32 size_t longest_prefix_length = 0;
33 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
35 for (auto const& mnt : host->get_mounted_storages()) {
36 XBT_DEBUG("See '%s'", mnt.first.c_str());
37 mount_point_ = fullpath_.substr(0, mnt.first.length());
39 if (mount_point_ == mnt.first && mnt.first.length() > longest_prefix_length) {
40 /* The current mount name is found in the full path and is bigger than the previous*/
41 longest_prefix_length = mnt.first.length();
45 if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/
46 mount_point_ = fullpath_.substr(0, longest_prefix_length);
47 path_ = fullpath_.substr(longest_prefix_length, fullpath_.length());
49 xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
54 Disk* File::find_local_disk_on(Host* host)
57 size_t longest_prefix_length = 0;
58 for (auto const& disk : host->get_disks()) {
59 std::string current_mount;
60 if (disk->get_host() != host)
61 current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point(disk->get_host());
63 current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
64 mount_point_ = fullpath_.substr(0, current_mount.length());
65 if (mount_point_ == current_mount && current_mount.length() > longest_prefix_length) {
66 /* The current mount name is found in the full path and is bigger than the previous*/
67 longest_prefix_length = current_mount.length();
70 if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/
71 mount_point_ = fullpath_.substr(0, longest_prefix_length);
72 if (mount_point_ == std::string("/"))
75 path_ = fullpath_.substr(longest_prefix_length, fullpath_.length());
76 XBT_DEBUG("%s + %s", mount_point_.c_str(), path_.c_str());
78 xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
83 File::File(const std::string& fullpath, void* userdata) : File(fullpath, Host::current(), userdata) {}
85 File::File(const std::string& fullpath, sg_host_t host, void* userdata) : fullpath_(fullpath)
87 this->set_data(userdata);
88 // this cannot fail because we get a xbt_die if the mountpoint does not exist
89 if (not host->get_mounted_storages().empty()) {
90 local_storage_ = find_local_storage_on(host);
92 if (not host->get_disks().empty()) {
93 local_disk_ = find_local_disk_on(host);
96 // assign a file descriptor id to the newly opened File
97 FileDescriptorHostExt* ext = host->extension<simgrid::s4u::FileDescriptorHostExt>();
98 if (ext->file_descriptor_table == nullptr) {
99 ext->file_descriptor_table.reset(new std::vector<int>(sg_storage_max_file_descriptors));
100 std::iota(ext->file_descriptor_table->rbegin(), ext->file_descriptor_table->rend(), 0); // Fill with ..., 1, 0.
102 xbt_assert(not ext->file_descriptor_table->empty(), "Too much files are opened! Some have to be closed.");
103 desc_id = ext->file_descriptor_table->back();
104 ext->file_descriptor_table->pop_back();
106 XBT_DEBUG("\tOpen file '%s'", path_.c_str());
107 std::map<std::string, sg_size_t>* content = nullptr;
109 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
112 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
114 // if file does not exist create an empty file
116 auto sz = content->find(path_);
117 if (sz != content->end()) {
121 content->insert({path_, size_});
122 XBT_DEBUG("File '%s' was not found, file created.", path_.c_str());
129 Host::current()->extension<simgrid::s4u::FileDescriptorHostExt>()->file_descriptor_table->push_back(desc_id);
135 XBT_INFO("File Descriptor information:\n"
136 "\t\tFull path: '%s'\n"
138 "\t\tMount point: '%s'\n"
139 "\t\tStorage Id: '%s'\n"
140 "\t\tStorage Type: '%s'\n"
141 "\t\tFile Descriptor Id: %d",
142 get_path(), size_, mount_point_.c_str(), local_storage_->get_cname(), local_storage_->get_type(), desc_id);
144 XBT_INFO("File Descriptor information:\n"
145 "\t\tFull path: '%s'\n"
147 "\t\tMount point: '%s'\n"
148 "\t\tDisk Id: '%s'\n"
149 "\t\tHost Id: '%s'\n"
150 "\t\tFile Descriptor Id: %d",
151 get_path(), size_, mount_point_.c_str(), local_disk_->get_cname(), local_disk_->get_host()->get_cname(),
155 sg_size_t File::read(sg_size_t size)
157 if (size_ == 0) /* Nothing to read, return */
159 sg_size_t read_size = 0;
160 Host* host = nullptr;
161 if (local_storage_) {
162 /* Find the host where the file is physically located and read it */
163 host = local_storage_->get_host();
164 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname());
165 // if the current position is close to the end of the file, we may not be able to read the requested size
166 read_size = local_storage_->read(std::min(size, size_ - current_position_));
167 current_position_ += read_size;
171 /* Find the host where the file is physically located and read it */
172 host = local_disk_->get_host();
173 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname());
174 // if the current position is close to the end of the file, we may not be able to read the requested size
175 read_size = local_disk_->read(std::min(size, size_ - current_position_));
176 current_position_ += read_size;
179 if (host && host->get_name() != Host::current()->get_name() && read_size > 0) {
180 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
181 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), read_size);
182 host->send_to(Host::current(), read_size);
188 /** @brief Write into a file (local or remote)
190 * @param size of the file to write
191 * @return the number of bytes successfully write or -1 if an error occurred
193 sg_size_t File::write_on_disk(sg_size_t size, bool write_inside)
195 sg_size_t write_size = 0;
196 /* Find the host where the file is physically located (remote or local)*/
197 Host* host = local_disk_->get_host();
199 if (host && host->get_name() != Host::current()->get_name()) {
200 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
201 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size);
202 Host::current()->send_to(host, size);
204 XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_disk_->get_cname(), size, size_,
205 sg_disk_get_size_used(local_disk_), sg_disk_get_size(local_disk_));
206 // If the storage is full before even starting to write
207 if (sg_disk_get_size_used(local_disk_) >= sg_disk_get_size(local_disk_))
209 if (not write_inside) {
210 /* Subtract the part of the file that might disappear from the used sized on the storage element */
211 local_disk_->extension<FileSystemDiskExt>()->decr_used_size(size_ - current_position_);
212 write_size = local_disk_->write(size);
213 local_disk_->extension<FileSystemDiskExt>()->incr_used_size(write_size);
214 current_position_ += write_size;
215 size_ = current_position_;
217 write_size = local_disk_->write(size);
218 current_position_ += write_size;
219 if (current_position_ > size_)
220 size_ = current_position_;
222 std::map<std::string, sg_size_t>* content = local_disk_->extension<FileSystemDiskExt>()->get_content();
224 content->erase(path_);
225 content->insert({path_, size_});
230 sg_size_t File::write_on_storage(sg_size_t size, bool write_inside)
232 sg_size_t write_size = 0;
233 /* Find the host where the file is physically located (remote or local)*/
234 Host* host = local_storage_->get_host();
236 if (host && host->get_name() != Host::current()->get_name()) {
237 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
238 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size);
239 Host::current()->send_to(host, size);
242 XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_storage_->get_cname(), size, size_,
243 sg_storage_get_size_used(local_storage_), sg_storage_get_size(local_storage_));
244 // If the storage is full before even starting to write
245 if (sg_storage_get_size_used(local_storage_) >= sg_storage_get_size(local_storage_))
247 if (not write_inside) {
248 /* Subtract the part of the file that might disappear from the used sized on the storage element */
249 local_storage_->extension<FileSystemStorageExt>()->decr_used_size(size_ - current_position_);
250 write_size = local_storage_->write(size);
251 local_storage_->extension<FileSystemStorageExt>()->incr_used_size(write_size);
252 current_position_ += write_size;
253 size_ = current_position_;
255 write_size = local_storage_->write(size);
256 current_position_ += write_size;
257 if (current_position_ > size_)
258 size_ = current_position_;
260 std::map<std::string, sg_size_t>* content = local_storage_->extension<FileSystemStorageExt>()->get_content();
262 content->erase(path_);
263 content->insert({path_, size_});
268 sg_size_t File::write(sg_size_t size, bool write_inside)
270 if (size == 0) /* Nothing to write, return */
274 return write_on_disk(size, write_inside);
276 return write_on_storage(size, write_inside);
281 sg_size_t File::size()
286 void File::seek(sg_offset_t offset)
288 current_position_ = offset;
291 void File::seek(sg_offset_t offset, int origin)
295 current_position_ = offset;
298 current_position_ += offset;
301 current_position_ = size_ + offset;
308 sg_size_t File::tell()
310 return current_position_;
313 void File::move(const std::string& fullpath)
315 /* Check if the new full path is on the same mount point */
316 if (fullpath.compare(0, mount_point_.length(), mount_point_) == 0) {
317 std::map<std::string, sg_size_t>* content = nullptr;
319 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
321 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
323 auto sz = content->find(path_);
324 if (sz != content->end()) { // src file exists
325 sg_size_t new_size = sz->second;
326 content->erase(path_);
327 std::string path = fullpath.substr(mount_point_.length(), fullpath.length());
328 content->insert({path.c_str(), new_size});
329 XBT_DEBUG("Move file from %s to %s, size '%llu'", path_.c_str(), fullpath.c_str(), new_size);
331 XBT_WARN("File %s doesn't exist", path_.c_str());
335 XBT_WARN("New full path %s is not on the same mount point: %s.", fullpath.c_str(), mount_point_.c_str());
341 /* Check if the file is on local storage */
342 std::map<std::string, sg_size_t>* content = nullptr;
343 const char* name = "";
344 if (local_storage_) {
345 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
346 name = local_storage_->get_cname();
349 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
350 name = local_disk_->get_cname();
353 if (not content || content->find(path_) == content->end()) {
354 XBT_WARN("File %s is not on disk %s. Impossible to unlink", path_.c_str(), name);
357 XBT_DEBUG("UNLINK %s on disk '%s'", path_.c_str(), name);
360 local_storage_->extension<FileSystemStorageExt>()->decr_used_size(size_);
363 local_disk_->extension<FileSystemDiskExt>()->decr_used_size(size_);
365 // Remove the file from storage
366 content->erase(path_);
372 int File::remote_copy(sg_host_t host, const char* fullpath)
374 /* Find the host where the file is physically located and read it */
375 Host* src_host = nullptr;
376 if (local_storage_) {
377 src_host = local_storage_->get_host();
378 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname());
382 src_host = local_disk_->get_host();
383 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname());
387 // if the current position is close to the end of the file, we may not be able to read the requested size
388 sg_size_t read_size = 0;
390 read_size = local_storage_->read(size_);
392 read_size = local_disk_->read(size_);
394 current_position_ += read_size;
396 Host* dst_host = host;
397 size_t longest_prefix_length = 0;
398 if (local_storage_) {
399 /* Find the host that owns the storage where the file has to be copied */
400 Storage* storage_dest = nullptr;
402 for (auto const& elm : host->get_mounted_storages()) {
403 std::string mount_point = std::string(fullpath).substr(0, elm.first.size());
404 if (mount_point == elm.first && elm.first.length() > longest_prefix_length) {
405 /* The current mount name is found in the full path and is bigger than the previous*/
406 longest_prefix_length = elm.first.length();
407 storage_dest = elm.second;
411 if (storage_dest != nullptr) {
412 /* Mount point found, retrieve the host the storage is attached to */
413 dst_host = storage_dest->get_host();
415 XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname());
421 Disk* dst_disk = nullptr;
423 for (auto const& disk : host->get_disks()) {
424 std::string current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
425 std::string mount_point = std::string(fullpath).substr(0, current_mount.length());
426 if (mount_point == current_mount && current_mount.length() > longest_prefix_length) {
427 /* The current mount name is found in the full path and is bigger than the previous*/
428 longest_prefix_length = current_mount.length();
433 if (dst_disk == nullptr) {
434 XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname());
440 XBT_DEBUG("Initiate data transfer of %llu bytes between %s and %s.", read_size, src_host->get_cname(),
441 dst_host->get_cname());
442 src_host->send_to(dst_host, read_size);
445 /* Create file on remote host, write it and close it */
446 File* fd = new File(fullpath, dst_host, nullptr);
447 if (local_storage_) {
448 sg_size_t write_size = fd->local_storage_->write(read_size);
449 fd->local_storage_->extension<FileSystemStorageExt>()->incr_used_size(write_size);
450 (*(fd->local_storage_->extension<FileSystemStorageExt>()->get_content()))[path_] = size_;
453 fd->write(read_size);
458 int File::remote_move(sg_host_t host, const char* fullpath)
460 int res = remote_copy(host, fullpath);
465 FileSystemDiskExt::FileSystemDiskExt(simgrid::s4u::Disk* ptr)
467 const char* size_str = ptr->get_property("size");
469 size_ = surf_parse_get_size(size_str, "disk size", ptr->get_name());
471 const char* current_mount_str = ptr->get_property("mount");
472 if (current_mount_str)
473 mount_point_ = std::string(current_mount_str);
475 mount_point_ = std::string("/");
477 const char* content_str = ptr->get_property("content");
479 content_.reset(parse_content(content_str));
482 FileSystemStorageExt::FileSystemStorageExt(simgrid::s4u::Storage* ptr)
484 content_.reset(parse_content(ptr->get_impl()->content_name_));
485 size_ = ptr->get_impl()->size_;
488 std::map<std::string, sg_size_t>* FileSystemDiskExt::parse_content(const std::string& filename)
490 if (filename.empty())
493 std::map<std::string, sg_size_t>* parse_content = new std::map<std::string, sg_size_t>();
495 std::ifstream* fs = surf_ifsopen(filename);
498 std::vector<std::string> tokens;
500 std::getline(*fs, line);
502 if (line.length() > 0) {
503 boost::split(tokens, line, boost::is_any_of(" \t"), boost::token_compress_on);
504 xbt_assert(tokens.size() == 2, "Parse error in %s: %s", filename.c_str(), line.c_str());
505 sg_size_t size = std::stoull(tokens.at(1));
508 parse_content->insert({tokens.front(), size});
510 } while (not fs->eof());
512 return parse_content;
515 std::map<std::string, sg_size_t>* FileSystemStorageExt::parse_content(const std::string& filename)
517 if (filename.empty())
520 std::map<std::string, sg_size_t>* parse_content = new std::map<std::string, sg_size_t>();
522 std::ifstream* fs = surf_ifsopen(filename);
525 std::vector<std::string> tokens;
527 std::getline(*fs, line);
529 if (line.length() > 0) {
530 boost::split(tokens, line, boost::is_any_of(" \t"), boost::token_compress_on);
531 xbt_assert(tokens.size() == 2, "Parse error in %s: %s", filename.c_str(), line.c_str());
532 sg_size_t size = std::stoull(tokens.at(1));
535 parse_content->insert({tokens.front(), size});
537 } while (not fs->eof());
539 return parse_content;
544 using simgrid::s4u::FileDescriptorHostExt;
545 using simgrid::s4u::FileSystemDiskExt;
546 using simgrid::s4u::FileSystemStorageExt;
548 static void on_disk_creation(simgrid::s4u::Disk& d)
550 d.extension_set(new FileSystemDiskExt(&d));
552 static void on_storage_creation(simgrid::s4u::Storage& st)
554 st.extension_set(new FileSystemStorageExt(&st));
557 static void on_host_creation(simgrid::s4u::Host& host)
559 host.extension_set<FileDescriptorHostExt>(new FileDescriptorHostExt());
562 static void on_platform_created()
564 for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
565 const char* remote_disk_str = host->get_property("remote_disk");
566 if (remote_disk_str) {
567 std::vector<std::string> tokens;
568 boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
569 std::string mount_point = tokens[0];
570 simgrid::s4u::Host* remote_host = simgrid::s4u::Host::by_name_or_null(tokens[2]);
571 xbt_assert(remote_host, "You're trying to access a host that does not exist. Please check your platform file");
573 simgrid::s4u::Disk* disk = nullptr;
574 for (auto const& d : remote_host->get_disks())
575 if (d->get_name() == tokens[1]) {
580 xbt_assert(disk, "You're trying to mount a disk that does not exist. Please check your platform file");
581 disk->extension<FileSystemDiskExt>()->add_remote_mount(remote_host, mount_point);
582 host->add_disk(disk);
584 XBT_DEBUG("Host '%s' wants to mount a remote disk: %s of %s mounted on %s", host->get_cname(), disk->get_cname(),
585 remote_host->get_cname(), mount_point.c_str());
586 XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size());
591 static void on_simulation_end()
593 XBT_DEBUG("Simulation is over, time to unregister remote disks if any");
594 for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
595 const char* remote_disk_str = host->get_property("remote_disk");
596 if (remote_disk_str) {
597 std::vector<std::string> tokens;
598 boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
599 XBT_DEBUG("Host '%s' wants to unmount a remote disk: %s of %s mounted on %s", host->get_cname(),
600 tokens[1].c_str(), tokens[2].c_str(), tokens[0].c_str());
601 host->remove_disk(tokens[1]);
602 XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size());
607 /* **************************** Public interface *************************** */
608 void sg_storage_file_system_init()
610 sg_storage_max_file_descriptors = 1024;
611 simgrid::config::bind_flag(sg_storage_max_file_descriptors, "storage/max_file_descriptors",
612 "Maximum number of concurrently opened files per host. Default is 1024");
614 if (not FileSystemStorageExt::EXTENSION_ID.valid()) {
615 FileSystemStorageExt::EXTENSION_ID = simgrid::s4u::Storage::extension_create<FileSystemStorageExt>();
616 simgrid::s4u::Storage::on_creation.connect(&on_storage_creation);
619 if (not FileSystemDiskExt::EXTENSION_ID.valid()) {
620 FileSystemDiskExt::EXTENSION_ID = simgrid::s4u::Disk::extension_create<FileSystemDiskExt>();
621 simgrid::s4u::Disk::on_creation.connect(&on_disk_creation);
624 if (not FileDescriptorHostExt::EXTENSION_ID.valid()) {
625 FileDescriptorHostExt::EXTENSION_ID = simgrid::s4u::Host::extension_create<FileDescriptorHostExt>();
626 simgrid::s4u::Host::on_creation.connect(&on_host_creation);
628 simgrid::s4u::Engine::on_platform_created.connect(&on_platform_created);
629 simgrid::s4u::Engine::on_simulation_end.connect(&on_simulation_end);
632 sg_file_t sg_file_open(const char* fullpath, void* data)
634 return new simgrid::s4u::File(fullpath, data);
637 sg_size_t sg_file_read(sg_file_t fd, sg_size_t size)
639 return fd->read(size);
642 sg_size_t sg_file_write(sg_file_t fd, sg_size_t size)
644 return fd->write(size);
647 void sg_file_close(sg_file_t fd)
652 const char* sg_file_get_name(sg_file_t fd)
654 xbt_assert((fd != nullptr), "Invalid file descriptor");
655 return fd->get_path();
658 sg_size_t sg_file_get_size(sg_file_t fd)
663 void sg_file_dump(sg_file_t fd)
668 void* sg_file_get_data(sg_file_t fd)
670 return fd->get_data();
673 void sg_file_set_data(sg_file_t fd, void* data)
679 * @brief Set the file position indicator in the sg_file_t by adding offset bytes
680 * to the position specified by origin (either SEEK_SET, SEEK_CUR, or SEEK_END).
682 * @param fd : file object that identifies the stream
683 * @param offset : number of bytes to offset from origin
684 * @param origin : Position used as reference for the offset. It is specified by one of the following constants defined
685 * in \<stdio.h\> exclusively to be used as arguments for this function (SEEK_SET = beginning of file,
686 * SEEK_CUR = current position of the file pointer, SEEK_END = end of file)
688 void sg_file_seek(sg_file_t fd, sg_offset_t offset, int origin)
690 fd->seek(offset, origin);
693 sg_size_t sg_file_tell(sg_file_t fd)
698 void sg_file_move(sg_file_t fd, const char* fullpath)
703 void sg_file_unlink(sg_file_t fd)
710 * @brief Copy a file to another location on a remote host.
711 * @param file : the file to move
712 * @param host : the remote host where the file has to be copied
713 * @param fullpath : the complete path destination on the remote host
714 * @return If successful, the function returns 0. Otherwise, it returns -1.
716 int sg_file_rcopy(sg_file_t file, sg_host_t host, const char* fullpath)
718 return file->remote_copy(host, fullpath);
722 * @brief Move a file to another location on a remote host.
723 * @param file : the file to move
724 * @param host : the remote host where the file has to be moved
725 * @param fullpath : the complete path destination on the remote host
726 * @return If successful, the function returns 0. Otherwise, it returns -1.
728 int sg_file_rmove(sg_file_t file, sg_host_t host, const char* fullpath)
730 return file->remote_move(host, fullpath);
733 sg_size_t sg_disk_get_size_free(sg_disk_t d)
735 return d->extension<FileSystemDiskExt>()->get_size() - d->extension<FileSystemDiskExt>()->get_used_size();
738 sg_size_t sg_disk_get_size_used(sg_disk_t d)
740 return d->extension<FileSystemDiskExt>()->get_used_size();
743 sg_size_t sg_disk_get_size(sg_disk_t d)
745 return d->extension<FileSystemDiskExt>()->get_size();
748 const char* sg_disk_get_mount_point(sg_disk_t d)
750 return d->extension<FileSystemDiskExt>()->get_mount_point();
753 sg_size_t sg_storage_get_size_free(sg_storage_t st)
755 return st->extension<FileSystemStorageExt>()->get_size() - st->extension<FileSystemStorageExt>()->get_used_size();
758 sg_size_t sg_storage_get_size_used(sg_storage_t st)
760 return st->extension<FileSystemStorageExt>()->get_used_size();
763 sg_size_t sg_storage_get_size(sg_storage_t st)
765 return st->extension<FileSystemStorageExt>()->get_size();
768 xbt_dict_t sg_storage_get_content(sg_storage_t storage)
770 std::map<std::string, sg_size_t>* content = storage->extension<simgrid::s4u::FileSystemStorageExt>()->get_content();
771 // Note: ::operator delete is ok here (no destructor called) since the dict elements are of POD type sg_size_t.
772 xbt_dict_t content_as_dict = xbt_dict_new_homogeneous(::operator delete);
774 for (auto const& entry : *content) {
775 sg_size_t* psize = new sg_size_t;
776 *psize = entry.second;
777 xbt_dict_set(content_as_dict, entry.first.c_str(), psize);
779 return content_as_dict;
782 xbt_dict_t sg_host_get_storage_content(sg_host_t host)
784 xbt_assert((host != nullptr), "Invalid parameters");
785 xbt_dict_t contents = xbt_dict_new_homogeneous(nullptr);
786 for (auto const& elm : host->get_mounted_storages())
787 xbt_dict_set(contents, elm.first.c_str(), sg_storage_get_content(elm.second));