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_CATEGORY(s4u_file, "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 File::File(const std::string& fullpath, void* userdata) : File(fullpath, Host::current(), userdata){};
31 File::File(const std::string& fullpath, sg_host_t host, void* userdata) : fullpath_(fullpath), userdata_(userdata)
33 // this cannot fail because we get a xbt_die if the mountpoint does not exist
34 if (not host->get_mounted_storages().empty()) {
35 Storage* st = nullptr;
36 size_t longest_prefix_length = 0;
37 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
39 for (auto const& mnt : host->get_mounted_storages()) {
40 XBT_DEBUG("See '%s'", mnt.first.c_str());
41 mount_point_ = fullpath_.substr(0, mnt.first.length());
43 if (mount_point_ == mnt.first && mnt.first.length() > longest_prefix_length) {
44 /* The current mount name is found in the full path and is bigger than the previous*/
45 longest_prefix_length = mnt.first.length();
49 if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/
50 mount_point_ = fullpath_.substr(0, longest_prefix_length);
51 path_ = fullpath_.substr(longest_prefix_length, fullpath_.length());
53 xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
57 if (not host->get_disks().empty()) {
59 size_t longest_prefix_length = 0;
60 for (auto const& disk : host->get_disks()) {
61 std::string current_mount;
62 if (disk->get_host() != host)
63 current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point(disk->get_host());
65 current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
66 mount_point_ = fullpath_.substr(0, current_mount.length());
67 if (mount_point_ == current_mount && current_mount.length() > longest_prefix_length) {
68 /* The current mount name is found in the full path and is bigger than the previous*/
69 longest_prefix_length = current_mount.length();
72 if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/
73 mount_point_ = fullpath_.substr(0, longest_prefix_length);
74 if (mount_point_ == std::string("/"))
77 path_ = fullpath_.substr(longest_prefix_length, fullpath_.length());
78 XBT_DEBUG("%s + %s", mount_point_.c_str(), path_.c_str());
80 xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
85 // assign a file descriptor id to the newly opened File
86 FileDescriptorHostExt* ext = host->extension<simgrid::s4u::FileDescriptorHostExt>();
87 if (ext->file_descriptor_table == nullptr) {
88 ext->file_descriptor_table.reset(new std::vector<int>(sg_storage_max_file_descriptors));
89 std::iota(ext->file_descriptor_table->rbegin(), ext->file_descriptor_table->rend(), 0); // Fill with ..., 1, 0.
91 xbt_assert(not ext->file_descriptor_table->empty(), "Too much files are opened! Some have to be closed.");
92 desc_id = ext->file_descriptor_table->back();
93 ext->file_descriptor_table->pop_back();
95 XBT_DEBUG("\tOpen file '%s'", path_.c_str());
96 std::map<std::string, sg_size_t>* content = nullptr;
98 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
101 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
103 // if file does not exist create an empty file
105 auto sz = content->find(path_);
106 if (sz != content->end()) {
110 content->insert({path_, size_});
111 XBT_DEBUG("File '%s' was not found, file created.", path_.c_str());
118 Host::current()->extension<simgrid::s4u::FileDescriptorHostExt>()->file_descriptor_table->push_back(desc_id);
124 XBT_INFO("File Descriptor information:\n"
125 "\t\tFull path: '%s'\n"
127 "\t\tMount point: '%s'\n"
128 "\t\tStorage Id: '%s'\n"
129 "\t\tStorage Type: '%s'\n"
130 "\t\tFile Descriptor Id: %d",
131 get_path(), size_, mount_point_.c_str(), local_storage_->get_cname(), local_storage_->get_type(), desc_id);
133 XBT_INFO("File Descriptor information:\n"
134 "\t\tFull path: '%s'\n"
136 "\t\tMount point: '%s'\n"
137 "\t\tDisk Id: '%s'\n"
138 "\t\tHost Id: '%s'\n"
139 "\t\tFile Descriptor Id: %d",
140 get_path(), size_, mount_point_.c_str(), local_disk_->get_cname(), local_disk_->get_host()->get_cname(),
144 sg_size_t File::read(sg_size_t size)
146 if (size_ == 0) /* Nothing to read, return */
148 sg_size_t read_size = 0;
149 Host* host = nullptr;
150 if (local_storage_) {
151 /* Find the host where the file is physically located and read it */
152 host = local_storage_->get_host();
153 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname());
154 // if the current position is close to the end of the file, we may not be able to read the requested size
155 read_size = local_storage_->read(std::min(size, size_ - current_position_));
156 current_position_ += read_size;
160 /* Find the host where the file is physically located and read it */
161 host = local_disk_->get_host();
162 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname());
163 // if the current position is close to the end of the file, we may not be able to read the requested size
164 read_size = local_disk_->read(std::min(size, size_ - current_position_));
165 current_position_ += read_size;
168 if (host && host->get_name() != Host::current()->get_name() && read_size > 0) {
169 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
170 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), read_size);
171 host->send_to(Host::current(), read_size);
177 /** @brief Write into a file (local or remote)
179 * @param size of the file to write
180 * @return the number of bytes successfully write or -1 if an error occurred
182 sg_size_t File::write(sg_size_t size, int write_inside)
184 if (size == 0) /* Nothing to write, return */
186 sg_size_t write_size = 0;
187 Host* host = nullptr;
189 /* Find the host where the file is physically located (remote or local)*/
191 host = local_storage_->get_host();
193 host = local_disk_->get_host();
195 if (host && host->get_name() != Host::current()->get_name()) {
196 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
197 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size);
198 Host::current()->send_to(host, size);
201 if (local_storage_) {
202 XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_storage_->get_cname(), size,
203 size_, sg_storage_get_size_used(local_storage_), sg_storage_get_size(local_storage_));
204 // If the storage is full before even starting to write
205 if (sg_storage_get_size_used(local_storage_) >= sg_storage_get_size(local_storage_))
207 if (write_inside == 0) {
208 /* Subtract the part of the file that might disappear from the used sized on the storage element */
209 local_storage_->extension<FileSystemStorageExt>()->decr_used_size(size_ - current_position_);
210 write_size = local_storage_->write(size);
211 local_storage_->extension<FileSystemStorageExt>()->incr_used_size(write_size);
212 current_position_ += write_size;
213 size_ = current_position_;
215 write_size = local_storage_->write(size);
216 current_position_ += write_size;
217 if (current_position_ > size_)
218 size_ = current_position_;
220 std::map<std::string, sg_size_t>* content = local_storage_->extension<FileSystemStorageExt>()->get_content();
222 content->erase(path_);
223 content->insert({path_, size_});
227 XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_disk_->get_cname(), size, size_,
228 sg_disk_get_size_used(local_disk_), sg_disk_get_size(local_disk_));
229 // If the storage is full before even starting to write
230 if (sg_disk_get_size_used(local_disk_) >= sg_disk_get_size(local_disk_))
232 if (write_inside == 0) {
233 /* Subtract the part of the file that might disappear from the used sized on the storage element */
234 local_disk_->extension<FileSystemDiskExt>()->decr_used_size(size_ - current_position_);
235 write_size = local_disk_->write(size);
236 local_disk_->extension<FileSystemDiskExt>()->incr_used_size(write_size);
237 current_position_ += write_size;
238 size_ = current_position_;
240 write_size = local_disk_->write(size);
241 current_position_ += write_size;
242 if (current_position_ > size_)
243 size_ = current_position_;
245 std::map<std::string, sg_size_t>* content = local_disk_->extension<FileSystemDiskExt>()->get_content();
247 content->erase(path_);
248 content->insert({path_, size_});
253 sg_size_t File::size()
258 void File::seek(sg_offset_t offset)
260 current_position_ = offset;
263 void File::seek(sg_offset_t offset, int origin)
267 current_position_ = offset;
270 current_position_ += offset;
273 current_position_ = size_ + offset;
280 sg_size_t File::tell()
282 return current_position_;
285 void File::move(const std::string& fullpath)
287 /* Check if the new full path is on the same mount point */
288 if (fullpath.compare(0, mount_point_.length(), mount_point_) == 0) {
289 std::map<std::string, sg_size_t>* content = nullptr;
291 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
293 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
295 auto sz = content->find(path_);
296 if (sz != content->end()) { // src file exists
297 sg_size_t new_size = sz->second;
298 content->erase(path_);
299 std::string path = fullpath.substr(mount_point_.length(), fullpath.length());
300 content->insert({path.c_str(), new_size});
301 XBT_DEBUG("Move file from %s to %s, size '%llu'", path_.c_str(), fullpath.c_str(), new_size);
303 XBT_WARN("File %s doesn't exist", path_.c_str());
307 XBT_WARN("New full path %s is not on the same mount point: %s.", fullpath.c_str(), mount_point_.c_str());
313 /* Check if the file is on local storage */
314 std::map<std::string, sg_size_t>* content = nullptr;
315 const char* name = "";
316 if (local_storage_) {
317 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
318 name = local_storage_->get_cname();
321 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
322 name = local_disk_->get_cname();
325 if (not content || content->find(path_) == content->end()) {
326 XBT_WARN("File %s is not on disk %s. Impossible to unlink", path_.c_str(), name);
329 XBT_DEBUG("UNLINK %s on disk '%s'", path_.c_str(), name);
332 local_storage_->extension<FileSystemStorageExt>()->decr_used_size(size_);
335 local_disk_->extension<FileSystemDiskExt>()->decr_used_size(size_);
337 // Remove the file from storage
338 content->erase(fullpath_);
344 int File::remote_copy(sg_host_t host, const char* fullpath)
346 /* Find the host where the file is physically located and read it */
347 Host* src_host = nullptr;
348 if (local_storage_) {
349 src_host = local_storage_->get_host();
350 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname());
354 src_host = local_disk_->get_host();
355 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname());
359 // if the current position is close to the end of the file, we may not be able to read the requested size
360 sg_size_t read_size = 0;
362 read_size = local_storage_->read(size_);
364 read_size = local_disk_->read(size_);
366 current_position_ += read_size;
368 Host* dst_host = host;
369 if (local_storage_) {
370 /* Find the host that owns the storage where the file has to be copied */
371 Storage* storage_dest = nullptr;
372 size_t longest_prefix_length = 0;
374 for (auto const& elm : host->get_mounted_storages()) {
375 std::string mount_point = std::string(fullpath).substr(0, elm.first.size());
376 if (mount_point == elm.first && elm.first.length() > longest_prefix_length) {
377 /* The current mount name is found in the full path and is bigger than the previous*/
378 longest_prefix_length = elm.first.length();
379 storage_dest = elm.second;
383 if (storage_dest != nullptr) {
384 /* Mount point found, retrieve the host the storage is attached to */
385 dst_host = storage_dest->get_host();
387 XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname());
393 size_t longest_prefix_length = 0;
394 Disk* dst_disk = nullptr;
396 for (auto const& disk : host->get_disks()) {
397 std::string current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
398 std::string mount_point = std::string(fullpath).substr(0, current_mount.length());
399 if (mount_point == current_mount && current_mount.length() > longest_prefix_length) {
400 /* The current mount name is found in the full path and is bigger than the previous*/
401 longest_prefix_length = current_mount.length();
406 if (dst_disk == nullptr) {
407 XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname());
413 XBT_DEBUG("Initiate data transfer of %llu bytes between %s and %s.", read_size, src_host->get_cname(),
414 dst_host->get_cname());
415 src_host->send_to(dst_host, read_size);
418 /* Create file on remote host, write it and close it */
419 File* fd = new File(fullpath, dst_host, nullptr);
420 if (local_storage_) {
421 sg_size_t write_size = fd->local_storage_->write(read_size);
422 fd->local_storage_->extension<FileSystemStorageExt>()->incr_used_size(write_size);
423 (*(fd->local_storage_->extension<FileSystemStorageExt>()->get_content()))[path_] = size_;
426 fd->write(read_size);
431 int File::remote_move(sg_host_t host, const char* fullpath)
433 int res = remote_copy(host, fullpath);
438 FileSystemDiskExt::FileSystemDiskExt(simgrid::s4u::Disk* ptr)
440 const char* size_str = ptr->get_property("size");
442 size_ = surf_parse_get_size(size_str, "disk size", ptr->get_name());
444 const char* current_mount_str = ptr->get_property("mount");
445 if (current_mount_str)
446 mount_point_ = std::string(current_mount_str);
448 mount_point_ = std::string("/");
450 const char* content_str = ptr->get_property("content");
452 content_.reset(parse_content(content_str));
455 FileSystemStorageExt::FileSystemStorageExt(simgrid::s4u::Storage* ptr)
457 content_.reset(parse_content(ptr->get_impl()->content_name_));
458 size_ = ptr->get_impl()->size_;
461 std::map<std::string, sg_size_t>* FileSystemDiskExt::parse_content(const std::string& filename)
463 if (filename.empty())
466 std::map<std::string, sg_size_t>* parse_content = new std::map<std::string, sg_size_t>();
468 std::ifstream* fs = surf_ifsopen(filename);
471 std::vector<std::string> tokens;
473 std::getline(*fs, line);
475 if (line.length() > 0) {
476 boost::split(tokens, line, boost::is_any_of(" \t"), boost::token_compress_on);
477 xbt_assert(tokens.size() == 2, "Parse error in %s: %s", filename.c_str(), line.c_str());
478 sg_size_t size = std::stoull(tokens.at(1));
481 parse_content->insert({tokens.front(), size});
483 } while (not fs->eof());
485 return parse_content;
488 std::map<std::string, sg_size_t>* FileSystemStorageExt::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;
517 using simgrid::s4u::FileDescriptorHostExt;
518 using simgrid::s4u::FileSystemDiskExt;
519 using simgrid::s4u::FileSystemStorageExt;
521 static void on_disk_creation(simgrid::s4u::Disk& d)
523 d.extension_set(new FileSystemDiskExt(&d));
525 static void on_storage_creation(simgrid::s4u::Storage& st)
527 st.extension_set(new FileSystemStorageExt(&st));
530 static void on_host_creation(simgrid::s4u::Host& host)
532 host.extension_set<FileDescriptorHostExt>(new FileDescriptorHostExt());
535 static void on_platform_created()
537 for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
538 const char* remote_disk_str = host->get_property("remote_disk");
539 if (remote_disk_str) {
540 std::vector<std::string> tokens;
541 boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
542 std::string mount_point = tokens[0];
543 simgrid::s4u::Host* remote_host = simgrid::s4u::Host::by_name_or_null(tokens[2]);
544 xbt_assert(remote_host, "You're trying to access a host that does not exist. Please check your platform file");
546 simgrid::s4u::Disk* disk = nullptr;
547 for (auto const& d : remote_host->get_disks())
548 if (d->get_name() == tokens[1]) {
553 xbt_assert(disk, "You're trying to mount a disk that does not exist. Please check your platform file");
554 disk->extension<FileSystemDiskExt>()->add_remote_mount(remote_host, mount_point);
555 host->add_disk(disk);
557 XBT_DEBUG("Host '%s' wants to mount a remote disk: %s of %s mounted on %s", host->get_cname(), disk->get_cname(),
558 remote_host->get_cname(), mount_point.c_str());
559 XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size());
564 static void on_simulation_end()
566 XBT_DEBUG("Simulation is over, time to unregister remote disks if any");
567 for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
568 const char* remote_disk_str = host->get_property("remote_disk");
569 if (remote_disk_str) {
570 std::vector<std::string> tokens;
571 boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
572 XBT_DEBUG("Host '%s' wants to unmount a remote disk: %s of %s mounted on %s", host->get_cname(),
573 tokens[1].c_str(), tokens[2].c_str(), tokens[0].c_str());
574 host->remove_disk(tokens[1]);
575 XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size());
580 /* **************************** Public interface *************************** */
581 void sg_storage_file_system_init()
583 sg_storage_max_file_descriptors = 1024;
584 simgrid::config::bind_flag(sg_storage_max_file_descriptors, "storage/max_file_descriptors",
585 "Maximum number of concurrently opened files per host. Default is 1024");
587 if (not FileSystemStorageExt::EXTENSION_ID.valid()) {
588 FileSystemStorageExt::EXTENSION_ID = simgrid::s4u::Storage::extension_create<FileSystemStorageExt>();
589 simgrid::s4u::Storage::on_creation.connect(&on_storage_creation);
592 if (not FileSystemDiskExt::EXTENSION_ID.valid()) {
593 FileSystemDiskExt::EXTENSION_ID = simgrid::s4u::Disk::extension_create<FileSystemDiskExt>();
594 simgrid::s4u::Disk::on_creation.connect(&on_disk_creation);
597 if (not FileDescriptorHostExt::EXTENSION_ID.valid()) {
598 FileDescriptorHostExt::EXTENSION_ID = simgrid::s4u::Host::extension_create<FileDescriptorHostExt>();
599 simgrid::s4u::Host::on_creation.connect(&on_host_creation);
601 simgrid::s4u::Engine::on_platform_created.connect(&on_platform_created);
602 simgrid::s4u::Engine::on_simulation_end.connect(&on_simulation_end);
605 sg_file_t sg_file_open(const char* fullpath, void* data)
607 return new simgrid::s4u::File(fullpath, data);
610 sg_size_t sg_file_read(sg_file_t fd, sg_size_t size)
612 return fd->read(size);
615 sg_size_t sg_file_write(sg_file_t fd, sg_size_t size)
617 return fd->write(size);
620 void sg_file_close(sg_file_t fd)
625 const char* sg_file_get_name(sg_file_t fd)
627 xbt_assert((fd != nullptr), "Invalid file descriptor");
628 return fd->get_path();
631 sg_size_t sg_file_get_size(sg_file_t fd)
636 void sg_file_dump(sg_file_t fd)
641 void* sg_file_get_data(sg_file_t fd)
643 return fd->get_userdata();
646 void sg_file_set_data(sg_file_t fd, void* data)
648 fd->set_userdata(data);
652 * @brief Set the file position indicator in the sg_file_t by adding offset bytes
653 * to the position specified by origin (either SEEK_SET, SEEK_CUR, or SEEK_END).
655 * @param fd : file object that identifies the stream
656 * @param offset : number of bytes to offset from origin
657 * @param origin : Position used as reference for the offset. It is specified by one of the following constants defined
658 * in \<stdio.h\> exclusively to be used as arguments for this function (SEEK_SET = beginning of file,
659 * SEEK_CUR = current position of the file pointer, SEEK_END = end of file)
661 void sg_file_seek(sg_file_t fd, sg_offset_t offset, int origin)
663 fd->seek(offset, origin);
666 sg_size_t sg_file_tell(sg_file_t fd)
671 void sg_file_move(sg_file_t fd, const char* fullpath)
676 void sg_file_unlink(sg_file_t fd)
683 * @brief Copy a file to another location on a remote host.
684 * @param file : the file to move
685 * @param host : the remote host where the file has to be copied
686 * @param fullpath : the complete path destination on the remote host
687 * @return If successful, the function returns 0. Otherwise, it returns -1.
689 int sg_file_rcopy(sg_file_t file, sg_host_t host, const char* fullpath)
691 return file->remote_copy(host, fullpath);
695 * @brief Move a file to another location on a remote host.
696 * @param file : the file to move
697 * @param host : the remote host where the file has to be moved
698 * @param fullpath : the complete path destination on the remote host
699 * @return If successful, the function returns 0. Otherwise, it returns -1.
701 int sg_file_rmove(sg_file_t file, sg_host_t host, const char* fullpath)
703 return file->remote_move(host, fullpath);
706 sg_size_t sg_disk_get_size_free(sg_disk_t d)
708 return d->extension<FileSystemDiskExt>()->get_size() - d->extension<FileSystemDiskExt>()->get_used_size();
711 sg_size_t sg_disk_get_size_used(sg_disk_t d)
713 return d->extension<FileSystemDiskExt>()->get_used_size();
716 sg_size_t sg_disk_get_size(sg_disk_t d)
718 return d->extension<FileSystemDiskExt>()->get_size();
721 const char* sg_disk_get_mount_point(sg_disk_t d)
723 return d->extension<FileSystemDiskExt>()->get_mount_point();
726 sg_size_t sg_storage_get_size_free(sg_storage_t st)
728 return st->extension<FileSystemStorageExt>()->get_size() - st->extension<FileSystemStorageExt>()->get_used_size();
731 sg_size_t sg_storage_get_size_used(sg_storage_t st)
733 return st->extension<FileSystemStorageExt>()->get_used_size();
736 sg_size_t sg_storage_get_size(sg_storage_t st)
738 return st->extension<FileSystemStorageExt>()->get_size();
741 xbt_dict_t sg_storage_get_content(sg_storage_t storage)
743 std::map<std::string, sg_size_t>* content = storage->extension<simgrid::s4u::FileSystemStorageExt>()->get_content();
744 // Note: ::operator delete is ok here (no destructor called) since the dict elements are of POD type sg_size_t.
745 xbt_dict_t content_as_dict = xbt_dict_new_homogeneous(::operator delete);
747 for (auto const& entry : *content) {
748 sg_size_t* psize = new sg_size_t;
749 *psize = entry.second;
750 xbt_dict_set(content_as_dict, entry.first.c_str(), psize, nullptr);
752 return content_as_dict;
755 xbt_dict_t sg_host_get_storage_content(sg_host_t host)
757 xbt_assert((host != nullptr), "Invalid parameters");
758 xbt_dict_t contents = xbt_dict_new_homogeneous(nullptr);
759 for (auto const& elm : host->get_mounted_storages())
760 xbt_dict_set(contents, elm.first.c_str(), sg_storage_get_content(elm.second), nullptr);