1 /* Copyright (c) 2015-2020. 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;
23 /** @defgroup plugin_filesystem Plugin FileSystem
25 * This adds the notion of Files on top of the storage notion that provided by the core of SimGrid.
26 * Activate this plugin at will.
31 simgrid::xbt::Extension<Disk, FileSystemDiskExt> FileSystemDiskExt::EXTENSION_ID;
32 simgrid::xbt::Extension<Storage, FileSystemStorageExt> FileSystemStorageExt::EXTENSION_ID;
33 simgrid::xbt::Extension<Host, FileDescriptorHostExt> FileDescriptorHostExt::EXTENSION_ID;
35 Storage* File::find_local_storage_on(Host* host)
37 Storage* st = nullptr;
38 size_t longest_prefix_length = 0;
39 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
41 for (auto const& mnt : host->get_mounted_storages()) {
42 XBT_DEBUG("See '%s'", mnt.first.c_str());
43 mount_point_ = fullpath_.substr(0, mnt.first.length());
45 if (mount_point_ == mnt.first && mnt.first.length() > longest_prefix_length) {
46 /* The current mount name is found in the full path and is bigger than the previous*/
47 longest_prefix_length = mnt.first.length();
51 if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/
52 mount_point_ = fullpath_.substr(0, longest_prefix_length);
53 path_ = fullpath_.substr(longest_prefix_length, fullpath_.length());
55 xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
60 Disk* File::find_local_disk_on(const Host* host)
63 size_t longest_prefix_length = 0;
64 for (auto const& disk : host->get_disks()) {
65 std::string current_mount;
66 if (disk->get_host() != host)
67 current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point(disk->get_host());
69 current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
70 mount_point_ = fullpath_.substr(0, current_mount.length());
71 if (mount_point_ == current_mount && current_mount.length() > longest_prefix_length) {
72 /* The current mount name is found in the full path and is bigger than the previous*/
73 longest_prefix_length = current_mount.length();
76 if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/
77 mount_point_ = fullpath_.substr(0, longest_prefix_length);
78 if (mount_point_ == std::string("/"))
81 path_ = fullpath_.substr(longest_prefix_length, fullpath_.length());
82 XBT_DEBUG("%s + %s", mount_point_.c_str(), path_.c_str());
84 xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
89 File::File(const std::string& fullpath, void* userdata) : File(fullpath, Host::current(), userdata) {}
91 File::File(const std::string& fullpath, sg_host_t host, void* userdata) : fullpath_(fullpath)
93 this->set_data(userdata);
94 // this cannot fail because we get a xbt_die if the mountpoint does not exist
95 if (not host->get_mounted_storages().empty()) {
96 local_storage_ = find_local_storage_on(host);
98 if (not host->get_disks().empty()) {
99 local_disk_ = find_local_disk_on(host);
102 // assign a file descriptor id to the newly opened File
103 FileDescriptorHostExt* ext = host->extension<simgrid::s4u::FileDescriptorHostExt>();
104 if (ext->file_descriptor_table == nullptr) {
105 ext->file_descriptor_table.reset(new std::vector<int>(sg_storage_max_file_descriptors));
106 std::iota(ext->file_descriptor_table->rbegin(), ext->file_descriptor_table->rend(), 0); // Fill with ..., 1, 0.
108 xbt_assert(not ext->file_descriptor_table->empty(), "Too much files are opened! Some have to be closed.");
109 desc_id = ext->file_descriptor_table->back();
110 ext->file_descriptor_table->pop_back();
112 XBT_DEBUG("\tOpen file '%s'", path_.c_str());
113 std::map<std::string, sg_size_t>* content = nullptr;
115 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
118 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
120 // if file does not exist create an empty file
122 auto sz = content->find(path_);
123 if (sz != content->end()) {
127 content->insert({path_, size_});
128 XBT_DEBUG("File '%s' was not found, file created.", path_.c_str());
135 Host::current()->extension<simgrid::s4u::FileDescriptorHostExt>()->file_descriptor_table->push_back(desc_id);
141 XBT_INFO("File Descriptor information:\n"
142 "\t\tFull path: '%s'\n"
144 "\t\tMount point: '%s'\n"
145 "\t\tStorage Id: '%s'\n"
146 "\t\tStorage Type: '%s'\n"
147 "\t\tFile Descriptor Id: %d",
148 get_path(), size_, mount_point_.c_str(), local_storage_->get_cname(), local_storage_->get_type(), desc_id);
150 XBT_INFO("File Descriptor information:\n"
151 "\t\tFull path: '%s'\n"
153 "\t\tMount point: '%s'\n"
154 "\t\tDisk Id: '%s'\n"
155 "\t\tHost Id: '%s'\n"
156 "\t\tFile Descriptor Id: %d",
157 get_path(), size_, mount_point_.c_str(), local_disk_->get_cname(), local_disk_->get_host()->get_cname(),
161 sg_size_t File::read(sg_size_t size)
163 if (size_ == 0) /* Nothing to read, return */
165 sg_size_t read_size = 0;
166 Host* host = nullptr;
167 if (local_storage_) {
168 /* Find the host where the file is physically located and read it */
169 host = local_storage_->get_host();
170 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname());
171 // if the current position is close to the end of the file, we may not be able to read the requested size
172 read_size = local_storage_->read(std::min(size, size_ - current_position_));
173 current_position_ += read_size;
177 /* Find the host where the file is physically located and read it */
178 host = local_disk_->get_host();
179 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname());
180 // if the current position is close to the end of the file, we may not be able to read the requested size
181 read_size = local_disk_->read(std::min(size, size_ - current_position_));
182 current_position_ += read_size;
185 if (host && host->get_name() != Host::current()->get_name() && read_size > 0) {
186 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
187 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), read_size);
188 host->send_to(Host::current(), read_size);
194 /** @brief Write into a file (local or remote)
195 * @ingroup plugin_filesystem
197 * @param size of the file to write
198 * @return the number of bytes successfully write or -1 if an error occurred
200 sg_size_t File::write_on_disk(sg_size_t size, bool write_inside)
202 sg_size_t write_size = 0;
203 /* Find the host where the file is physically located (remote or local)*/
204 Host* host = local_disk_->get_host();
206 if (host && host->get_name() != Host::current()->get_name()) {
207 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
208 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size);
209 Host::current()->send_to(host, size);
211 XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_disk_->get_cname(), size, size_,
212 sg_disk_get_size_used(local_disk_), sg_disk_get_size(local_disk_));
213 // If the storage is full before even starting to write
214 if (sg_disk_get_size_used(local_disk_) >= sg_disk_get_size(local_disk_))
216 if (not write_inside) {
217 /* Subtract the part of the file that might disappear from the used sized on the storage element */
218 local_disk_->extension<FileSystemDiskExt>()->decr_used_size(size_ - current_position_);
219 write_size = local_disk_->write(size);
220 local_disk_->extension<FileSystemDiskExt>()->incr_used_size(write_size);
221 current_position_ += write_size;
222 size_ = current_position_;
224 write_size = local_disk_->write(size);
225 current_position_ += write_size;
226 if (current_position_ > size_)
227 size_ = current_position_;
229 std::map<std::string, sg_size_t>* content = local_disk_->extension<FileSystemDiskExt>()->get_content();
231 content->erase(path_);
232 content->insert({path_, size_});
237 sg_size_t File::write_on_storage(sg_size_t size, bool write_inside)
239 sg_size_t write_size = 0;
240 /* Find the host where the file is physically located (remote or local)*/
241 Host* host = local_storage_->get_host();
243 if (host && host->get_name() != Host::current()->get_name()) {
244 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
245 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size);
246 Host::current()->send_to(host, size);
249 XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_storage_->get_cname(), size, size_,
250 sg_storage_get_size_used(local_storage_), sg_storage_get_size(local_storage_));
251 // If the storage is full before even starting to write
252 if (sg_storage_get_size_used(local_storage_) >= sg_storage_get_size(local_storage_))
254 if (not write_inside) {
255 /* Subtract the part of the file that might disappear from the used sized on the storage element */
256 local_storage_->extension<FileSystemStorageExt>()->decr_used_size(size_ - current_position_);
257 write_size = local_storage_->write(size);
258 local_storage_->extension<FileSystemStorageExt>()->incr_used_size(write_size);
259 current_position_ += write_size;
260 size_ = current_position_;
262 write_size = local_storage_->write(size);
263 current_position_ += write_size;
264 if (current_position_ > size_)
265 size_ = current_position_;
267 std::map<std::string, sg_size_t>* content = local_storage_->extension<FileSystemStorageExt>()->get_content();
269 content->erase(path_);
270 content->insert({path_, size_});
275 sg_size_t File::write(sg_size_t size, bool write_inside)
277 if (size == 0) /* Nothing to write, return */
281 return write_on_disk(size, write_inside);
283 return write_on_storage(size, write_inside);
288 sg_size_t File::size()
293 void File::seek(sg_offset_t offset)
295 current_position_ = offset;
298 void File::seek(sg_offset_t offset, int origin)
302 current_position_ = offset;
305 current_position_ += offset;
308 current_position_ = size_ + offset;
315 sg_size_t File::tell()
317 return current_position_;
320 void File::move(const std::string& fullpath)
322 /* Check if the new full path is on the same mount point */
323 if (fullpath.compare(0, mount_point_.length(), mount_point_) == 0) {
324 std::map<std::string, sg_size_t>* content = nullptr;
326 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
328 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
330 auto sz = content->find(path_);
331 if (sz != content->end()) { // src file exists
332 sg_size_t new_size = sz->second;
333 content->erase(path_);
334 std::string path = fullpath.substr(mount_point_.length(), fullpath.length());
335 content->insert({path.c_str(), new_size});
336 XBT_DEBUG("Move file from %s to %s, size '%llu'", path_.c_str(), fullpath.c_str(), new_size);
338 XBT_WARN("File %s doesn't exist", path_.c_str());
342 XBT_WARN("New full path %s is not on the same mount point: %s.", fullpath.c_str(), mount_point_.c_str());
348 /* Check if the file is on local storage */
349 std::map<std::string, sg_size_t>* content = nullptr;
350 const char* name = "";
351 if (local_storage_) {
352 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
353 name = local_storage_->get_cname();
356 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
357 name = local_disk_->get_cname();
360 if (not content || content->find(path_) == content->end()) {
361 XBT_WARN("File %s is not on disk %s. Impossible to unlink", path_.c_str(), name);
364 XBT_DEBUG("UNLINK %s on disk '%s'", path_.c_str(), name);
367 local_storage_->extension<FileSystemStorageExt>()->decr_used_size(size_);
370 local_disk_->extension<FileSystemDiskExt>()->decr_used_size(size_);
372 // Remove the file from storage
373 content->erase(path_);
379 int File::remote_copy(sg_host_t host, const char* fullpath)
381 /* Find the host where the file is physically located and read it */
382 Host* src_host = nullptr;
383 if (local_storage_) {
384 src_host = local_storage_->get_host();
385 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname());
389 src_host = local_disk_->get_host();
390 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname());
394 // if the current position is close to the end of the file, we may not be able to read the requested size
395 sg_size_t read_size = 0;
397 read_size = local_storage_->read(size_);
399 read_size = local_disk_->read(size_);
401 current_position_ += read_size;
403 Host* dst_host = host;
404 size_t longest_prefix_length = 0;
405 if (local_storage_) {
406 /* Find the host that owns the storage where the file has to be copied */
407 const Storage* storage_dest = nullptr;
409 for (auto const& elm : host->get_mounted_storages()) {
410 std::string mount_point = std::string(fullpath).substr(0, elm.first.size());
411 if (mount_point == elm.first && elm.first.length() > longest_prefix_length) {
412 /* The current mount name is found in the full path and is bigger than the previous*/
413 longest_prefix_length = elm.first.length();
414 storage_dest = elm.second;
418 if (storage_dest != nullptr) {
419 /* Mount point found, retrieve the host the storage is attached to */
420 dst_host = storage_dest->get_host();
422 XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname());
428 const Disk* dst_disk = nullptr;
430 for (auto const& disk : host->get_disks()) {
431 std::string current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
432 std::string mount_point = std::string(fullpath).substr(0, current_mount.length());
433 if (mount_point == current_mount && current_mount.length() > longest_prefix_length) {
434 /* The current mount name is found in the full path and is bigger than the previous*/
435 longest_prefix_length = current_mount.length();
440 if (dst_disk == nullptr) {
441 XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname());
447 XBT_DEBUG("Initiate data transfer of %llu bytes between %s and %s.", read_size, src_host->get_cname(),
448 dst_host->get_cname());
449 src_host->send_to(dst_host, read_size);
452 /* Create file on remote host, write it and close it */
453 File* fd = new File(fullpath, dst_host, nullptr);
454 if (local_storage_) {
455 sg_size_t write_size = fd->local_storage_->write(read_size);
456 fd->local_storage_->extension<FileSystemStorageExt>()->incr_used_size(write_size);
457 (*(fd->local_storage_->extension<FileSystemStorageExt>()->get_content()))[path_] = size_;
460 fd->write(read_size);
465 int File::remote_move(sg_host_t host, const char* fullpath)
467 int res = remote_copy(host, fullpath);
472 FileSystemDiskExt::FileSystemDiskExt(const Disk* ptr)
474 const char* size_str = ptr->get_property("size");
476 size_ = surf_parse_get_size(size_str, "disk size", ptr->get_name());
478 const char* current_mount_str = ptr->get_property("mount");
479 if (current_mount_str)
480 mount_point_ = std::string(current_mount_str);
482 mount_point_ = std::string("/");
484 const char* content_str = ptr->get_property("content");
486 content_.reset(parse_content(content_str));
489 FileSystemStorageExt::FileSystemStorageExt(const Storage* ptr) : size_(ptr->get_impl()->size_)
491 content_.reset(parse_content(ptr->get_impl()->content_name_));
494 std::map<std::string, sg_size_t>* FileSystemDiskExt::parse_content(const std::string& filename)
496 if (filename.empty())
499 std::map<std::string, sg_size_t>* parse_content = new std::map<std::string, sg_size_t>();
501 std::ifstream* fs = surf_ifsopen(filename);
504 std::vector<std::string> tokens;
506 std::getline(*fs, line);
508 if (line.length() > 0) {
509 boost::split(tokens, line, boost::is_any_of(" \t"), boost::token_compress_on);
510 xbt_assert(tokens.size() == 2, "Parse error in %s: %s", filename.c_str(), line.c_str());
511 sg_size_t size = std::stoull(tokens.at(1));
514 parse_content->insert({tokens.front(), size});
516 } while (not fs->eof());
518 return parse_content;
521 std::map<std::string, sg_size_t>* FileSystemStorageExt::parse_content(const std::string& filename)
523 if (filename.empty())
526 std::map<std::string, sg_size_t>* parse_content = new std::map<std::string, sg_size_t>();
528 std::ifstream* fs = surf_ifsopen(filename);
531 std::vector<std::string> tokens;
533 std::getline(*fs, line);
535 if (line.length() > 0) {
536 boost::split(tokens, line, boost::is_any_of(" \t"), boost::token_compress_on);
537 xbt_assert(tokens.size() == 2, "Parse error in %s: %s", filename.c_str(), line.c_str());
538 sg_size_t size = std::stoull(tokens.at(1));
541 parse_content->insert({tokens.front(), size});
543 } while (not fs->eof());
545 return parse_content;
550 using simgrid::s4u::FileDescriptorHostExt;
551 using simgrid::s4u::FileSystemDiskExt;
552 using simgrid::s4u::FileSystemStorageExt;
554 static void on_disk_creation(simgrid::s4u::Disk& d)
556 d.extension_set(new FileSystemDiskExt(&d));
558 static void on_storage_creation(simgrid::s4u::Storage& st)
560 st.extension_set(new FileSystemStorageExt(&st));
563 static void on_host_creation(simgrid::s4u::Host& host)
565 host.extension_set<FileDescriptorHostExt>(new FileDescriptorHostExt());
568 static void on_platform_created()
570 for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
571 const char* remote_disk_str = host->get_property("remote_disk");
572 if (remote_disk_str) {
573 std::vector<std::string> tokens;
574 boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
575 std::string mount_point = tokens[0];
576 simgrid::s4u::Host* remote_host = simgrid::s4u::Host::by_name_or_null(tokens[2]);
577 xbt_assert(remote_host, "You're trying to access a host that does not exist. Please check your platform file");
579 simgrid::s4u::Disk* disk = nullptr;
580 for (auto const& d : remote_host->get_disks())
581 if (d->get_name() == tokens[1]) {
586 xbt_assert(disk, "You're trying to mount a disk that does not exist. Please check your platform file");
587 disk->extension<FileSystemDiskExt>()->add_remote_mount(remote_host, mount_point);
588 host->add_disk(disk);
590 XBT_DEBUG("Host '%s' wants to mount a remote disk: %s of %s mounted on %s", host->get_cname(), disk->get_cname(),
591 remote_host->get_cname(), mount_point.c_str());
592 XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size());
597 static void on_simulation_end()
599 XBT_DEBUG("Simulation is over, time to unregister remote disks if any");
600 for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
601 const char* remote_disk_str = host->get_property("remote_disk");
602 if (remote_disk_str) {
603 std::vector<std::string> tokens;
604 boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
605 XBT_DEBUG("Host '%s' wants to unmount a remote disk: %s of %s mounted on %s", host->get_cname(),
606 tokens[1].c_str(), tokens[2].c_str(), tokens[0].c_str());
607 host->remove_disk(tokens[1]);
608 XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size());
613 /* **************************** Public interface *************************** */
614 /** @brief Initialize the file system plugin.
615 @ingroup plugin_filesystem
618 See the examples in :ref:`s4u_ex_disk_io`.
621 void sg_storage_file_system_init()
623 sg_storage_max_file_descriptors = 1024;
624 simgrid::config::bind_flag(sg_storage_max_file_descriptors, "storage/max_file_descriptors",
625 "Maximum number of concurrently opened files per host. Default is 1024");
627 if (not FileSystemStorageExt::EXTENSION_ID.valid()) {
628 FileSystemStorageExt::EXTENSION_ID = simgrid::s4u::Storage::extension_create<FileSystemStorageExt>();
629 simgrid::s4u::Storage::on_creation.connect(&on_storage_creation);
632 if (not FileSystemDiskExt::EXTENSION_ID.valid()) {
633 FileSystemDiskExt::EXTENSION_ID = simgrid::s4u::Disk::extension_create<FileSystemDiskExt>();
634 simgrid::s4u::Disk::on_creation.connect(&on_disk_creation);
637 if (not FileDescriptorHostExt::EXTENSION_ID.valid()) {
638 FileDescriptorHostExt::EXTENSION_ID = simgrid::s4u::Host::extension_create<FileDescriptorHostExt>();
639 simgrid::s4u::Host::on_creation.connect(&on_host_creation);
641 simgrid::s4u::Engine::on_platform_created.connect(&on_platform_created);
642 simgrid::s4u::Engine::on_simulation_end.connect(&on_simulation_end);
645 sg_file_t sg_file_open(const char* fullpath, void* data)
647 return new simgrid::s4u::File(fullpath, data);
650 sg_size_t sg_file_read(sg_file_t fd, sg_size_t size)
652 return fd->read(size);
655 sg_size_t sg_file_write(sg_file_t fd, sg_size_t size)
657 return fd->write(size);
660 void sg_file_close(const_sg_file_t fd)
665 /** Retrieves the path to the file
666 * @ingroup plugin_filesystem
668 const char* sg_file_get_name(sg_file_t fd)
670 xbt_assert((fd != nullptr), "Invalid file descriptor");
671 return fd->get_path();
674 /** Retrieves the size of the file
675 * @ingroup plugin_filesystem
677 sg_size_t sg_file_get_size(sg_file_t fd)
682 void sg_file_dump(sg_file_t fd)
687 /** Retrieves the user data associated with the file
688 * @ingroup plugin_filesystem
690 void* sg_file_get_data(const_sg_file_t fd)
692 return fd->get_data();
695 /** Changes the user data associated with the file
696 * @ingroup plugin_filesystem
698 void sg_file_set_data(sg_file_t fd, void* data)
704 * @brief Set the file position indicator in the sg_file_t by adding offset bytes to the position specified by origin (either SEEK_SET, SEEK_CUR, or SEEK_END).
705 * @ingroup plugin_filesystem
707 * @param fd : file object that identifies the stream
708 * @param offset : number of bytes to offset from origin
709 * @param origin : Position used as reference for the offset. It is specified by one of the following constants defined
710 * in \<stdio.h\> exclusively to be used as arguments for this function (SEEK_SET = beginning of file,
711 * SEEK_CUR = current position of the file pointer, SEEK_END = end of file)
713 void sg_file_seek(sg_file_t fd, sg_offset_t offset, int origin)
715 fd->seek(offset, origin);
718 sg_size_t sg_file_tell(sg_file_t fd)
723 void sg_file_move(sg_file_t fd, const char* fullpath)
728 void sg_file_unlink(sg_file_t fd)
735 * @brief Copy a file to another location on a remote host.
736 * @ingroup plugin_filesystem
738 * @param file : the file to move
739 * @param host : the remote host where the file has to be copied
740 * @param fullpath : the complete path destination on the remote host
741 * @return If successful, the function returns 0. Otherwise, it returns -1.
743 int sg_file_rcopy(sg_file_t file, sg_host_t host, const char* fullpath)
745 return file->remote_copy(host, fullpath);
749 * @brief Move a file to another location on a remote host.
750 * @ingroup plugin_filesystem
752 * @param file : the file to move
753 * @param host : the remote host where the file has to be moved
754 * @param fullpath : the complete path destination on the remote host
755 * @return If successful, the function returns 0. Otherwise, it returns -1.
757 int sg_file_rmove(sg_file_t file, sg_host_t host, const char* fullpath)
759 return file->remote_move(host, fullpath);
762 sg_size_t sg_disk_get_size_free(const_sg_disk_t d)
764 return d->extension<FileSystemDiskExt>()->get_size() - d->extension<FileSystemDiskExt>()->get_used_size();
767 sg_size_t sg_disk_get_size_used(const_sg_disk_t d)
769 return d->extension<FileSystemDiskExt>()->get_used_size();
772 sg_size_t sg_disk_get_size(const_sg_disk_t d)
774 return d->extension<FileSystemDiskExt>()->get_size();
777 const char* sg_disk_get_mount_point(const_sg_disk_t d)
779 return d->extension<FileSystemDiskExt>()->get_mount_point();
782 sg_size_t sg_storage_get_size_free(const_sg_storage_t st)
784 return st->extension<FileSystemStorageExt>()->get_size() - st->extension<FileSystemStorageExt>()->get_used_size();
787 sg_size_t sg_storage_get_size_used(const_sg_storage_t st)
789 return st->extension<FileSystemStorageExt>()->get_used_size();
792 sg_size_t sg_storage_get_size(const_sg_storage_t st)
794 return st->extension<FileSystemStorageExt>()->get_size();
797 xbt_dict_t sg_storage_get_content(const_sg_storage_t storage)
799 const std::map<std::string, sg_size_t>* content =
800 storage->extension<simgrid::s4u::FileSystemStorageExt>()->get_content();
801 // Note: ::operator delete is ok here (no destructor called) since the dict elements are of POD type sg_size_t.
802 xbt_dict_t content_as_dict = xbt_dict_new_homogeneous(::operator delete);
804 for (auto const& entry : *content) {
805 sg_size_t* psize = new sg_size_t;
806 *psize = entry.second;
807 xbt_dict_set(content_as_dict, entry.first.c_str(), psize);
809 return content_as_dict;
812 xbt_dict_t sg_host_get_storage_content(sg_host_t host)
814 xbt_assert((host != nullptr), "Invalid parameters");
815 xbt_dict_t contents = xbt_dict_new_homogeneous(nullptr);
816 for (auto const& elm : host->get_mounted_storages())
817 xbt_dict_set(contents, elm.first.c_str(), sg_storage_get_content(elm.second));