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;
23 /** @defgroup plugin_filesystem
32 simgrid::xbt::Extension<Disk, FileSystemDiskExt> FileSystemDiskExt::EXTENSION_ID;
33 simgrid::xbt::Extension<Storage, FileSystemStorageExt> FileSystemStorageExt::EXTENSION_ID;
34 simgrid::xbt::Extension<Host, FileDescriptorHostExt> FileDescriptorHostExt::EXTENSION_ID;
36 Storage* File::find_local_storage_on(Host* host)
38 Storage* st = nullptr;
39 size_t longest_prefix_length = 0;
40 XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
42 for (auto const& mnt : host->get_mounted_storages()) {
43 XBT_DEBUG("See '%s'", mnt.first.c_str());
44 mount_point_ = fullpath_.substr(0, mnt.first.length());
46 if (mount_point_ == mnt.first && mnt.first.length() > longest_prefix_length) {
47 /* The current mount name is found in the full path and is bigger than the previous*/
48 longest_prefix_length = mnt.first.length();
52 if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/
53 mount_point_ = fullpath_.substr(0, longest_prefix_length);
54 path_ = fullpath_.substr(longest_prefix_length, fullpath_.length());
56 xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
61 Disk* File::find_local_disk_on(Host* host)
64 size_t longest_prefix_length = 0;
65 for (auto const& disk : host->get_disks()) {
66 std::string current_mount;
67 if (disk->get_host() != host)
68 current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point(disk->get_host());
70 current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
71 mount_point_ = fullpath_.substr(0, current_mount.length());
72 if (mount_point_ == current_mount && current_mount.length() > longest_prefix_length) {
73 /* The current mount name is found in the full path and is bigger than the previous*/
74 longest_prefix_length = current_mount.length();
77 if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/
78 mount_point_ = fullpath_.substr(0, longest_prefix_length);
79 if (mount_point_ == std::string("/"))
82 path_ = fullpath_.substr(longest_prefix_length, fullpath_.length());
83 XBT_DEBUG("%s + %s", mount_point_.c_str(), path_.c_str());
85 xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname());
90 File::File(const std::string& fullpath, void* userdata) : File(fullpath, Host::current(), userdata) {}
92 File::File(const std::string& fullpath, sg_host_t host, void* userdata) : fullpath_(fullpath)
94 this->set_data(userdata);
95 // this cannot fail because we get a xbt_die if the mountpoint does not exist
96 if (not host->get_mounted_storages().empty()) {
97 local_storage_ = find_local_storage_on(host);
99 if (not host->get_disks().empty()) {
100 local_disk_ = find_local_disk_on(host);
103 // assign a file descriptor id to the newly opened File
104 FileDescriptorHostExt* ext = host->extension<simgrid::s4u::FileDescriptorHostExt>();
105 if (ext->file_descriptor_table == nullptr) {
106 ext->file_descriptor_table.reset(new std::vector<int>(sg_storage_max_file_descriptors));
107 std::iota(ext->file_descriptor_table->rbegin(), ext->file_descriptor_table->rend(), 0); // Fill with ..., 1, 0.
109 xbt_assert(not ext->file_descriptor_table->empty(), "Too much files are opened! Some have to be closed.");
110 desc_id = ext->file_descriptor_table->back();
111 ext->file_descriptor_table->pop_back();
113 XBT_DEBUG("\tOpen file '%s'", path_.c_str());
114 std::map<std::string, sg_size_t>* content = nullptr;
116 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
119 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
121 // if file does not exist create an empty file
123 auto sz = content->find(path_);
124 if (sz != content->end()) {
128 content->insert({path_, size_});
129 XBT_DEBUG("File '%s' was not found, file created.", path_.c_str());
136 Host::current()->extension<simgrid::s4u::FileDescriptorHostExt>()->file_descriptor_table->push_back(desc_id);
142 XBT_INFO("File Descriptor information:\n"
143 "\t\tFull path: '%s'\n"
145 "\t\tMount point: '%s'\n"
146 "\t\tStorage Id: '%s'\n"
147 "\t\tStorage Type: '%s'\n"
148 "\t\tFile Descriptor Id: %d",
149 get_path(), size_, mount_point_.c_str(), local_storage_->get_cname(), local_storage_->get_type(), desc_id);
151 XBT_INFO("File Descriptor information:\n"
152 "\t\tFull path: '%s'\n"
154 "\t\tMount point: '%s'\n"
155 "\t\tDisk Id: '%s'\n"
156 "\t\tHost Id: '%s'\n"
157 "\t\tFile Descriptor Id: %d",
158 get_path(), size_, mount_point_.c_str(), local_disk_->get_cname(), local_disk_->get_host()->get_cname(),
162 sg_size_t File::read(sg_size_t size)
164 if (size_ == 0) /* Nothing to read, return */
166 sg_size_t read_size = 0;
167 Host* host = nullptr;
168 if (local_storage_) {
169 /* Find the host where the file is physically located and read it */
170 host = local_storage_->get_host();
171 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname());
172 // if the current position is close to the end of the file, we may not be able to read the requested size
173 read_size = local_storage_->read(std::min(size, size_ - current_position_));
174 current_position_ += read_size;
178 /* Find the host where the file is physically located and read it */
179 host = local_disk_->get_host();
180 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname());
181 // if the current position is close to the end of the file, we may not be able to read the requested size
182 read_size = local_disk_->read(std::min(size, size_ - current_position_));
183 current_position_ += read_size;
186 if (host && host->get_name() != Host::current()->get_name() && read_size > 0) {
187 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
188 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), read_size);
189 host->send_to(Host::current(), read_size);
195 /** @brief Write into a file (local or remote)
196 * @ingroup plugin_filesystem
198 * @param size of the file to write
199 * @return the number of bytes successfully write or -1 if an error occurred
201 sg_size_t File::write_on_disk(sg_size_t size, bool write_inside)
203 sg_size_t write_size = 0;
204 /* Find the host where the file is physically located (remote or local)*/
205 Host* host = local_disk_->get_host();
207 if (host && host->get_name() != Host::current()->get_name()) {
208 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
209 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size);
210 Host::current()->send_to(host, size);
212 XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_disk_->get_cname(), size, size_,
213 sg_disk_get_size_used(local_disk_), sg_disk_get_size(local_disk_));
214 // If the storage is full before even starting to write
215 if (sg_disk_get_size_used(local_disk_) >= sg_disk_get_size(local_disk_))
217 if (not write_inside) {
218 /* Subtract the part of the file that might disappear from the used sized on the storage element */
219 local_disk_->extension<FileSystemDiskExt>()->decr_used_size(size_ - current_position_);
220 write_size = local_disk_->write(size);
221 local_disk_->extension<FileSystemDiskExt>()->incr_used_size(write_size);
222 current_position_ += write_size;
223 size_ = current_position_;
225 write_size = local_disk_->write(size);
226 current_position_ += write_size;
227 if (current_position_ > size_)
228 size_ = current_position_;
230 std::map<std::string, sg_size_t>* content = local_disk_->extension<FileSystemDiskExt>()->get_content();
232 content->erase(path_);
233 content->insert({path_, size_});
238 sg_size_t File::write_on_storage(sg_size_t size, bool write_inside)
240 sg_size_t write_size = 0;
241 /* Find the host where the file is physically located (remote or local)*/
242 Host* host = local_storage_->get_host();
244 if (host && host->get_name() != Host::current()->get_name()) {
245 /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */
246 XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size);
247 Host::current()->send_to(host, size);
250 XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_storage_->get_cname(), size, size_,
251 sg_storage_get_size_used(local_storage_), sg_storage_get_size(local_storage_));
252 // If the storage is full before even starting to write
253 if (sg_storage_get_size_used(local_storage_) >= sg_storage_get_size(local_storage_))
255 if (not write_inside) {
256 /* Subtract the part of the file that might disappear from the used sized on the storage element */
257 local_storage_->extension<FileSystemStorageExt>()->decr_used_size(size_ - current_position_);
258 write_size = local_storage_->write(size);
259 local_storage_->extension<FileSystemStorageExt>()->incr_used_size(write_size);
260 current_position_ += write_size;
261 size_ = current_position_;
263 write_size = local_storage_->write(size);
264 current_position_ += write_size;
265 if (current_position_ > size_)
266 size_ = current_position_;
268 std::map<std::string, sg_size_t>* content = local_storage_->extension<FileSystemStorageExt>()->get_content();
270 content->erase(path_);
271 content->insert({path_, size_});
276 sg_size_t File::write(sg_size_t size, bool write_inside)
278 if (size == 0) /* Nothing to write, return */
282 return write_on_disk(size, write_inside);
284 return write_on_storage(size, write_inside);
289 sg_size_t File::size()
294 void File::seek(sg_offset_t offset)
296 current_position_ = offset;
299 void File::seek(sg_offset_t offset, int origin)
303 current_position_ = offset;
306 current_position_ += offset;
309 current_position_ = size_ + offset;
316 sg_size_t File::tell()
318 return current_position_;
321 void File::move(const std::string& fullpath)
323 /* Check if the new full path is on the same mount point */
324 if (fullpath.compare(0, mount_point_.length(), mount_point_) == 0) {
325 std::map<std::string, sg_size_t>* content = nullptr;
327 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
329 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
331 auto sz = content->find(path_);
332 if (sz != content->end()) { // src file exists
333 sg_size_t new_size = sz->second;
334 content->erase(path_);
335 std::string path = fullpath.substr(mount_point_.length(), fullpath.length());
336 content->insert({path.c_str(), new_size});
337 XBT_DEBUG("Move file from %s to %s, size '%llu'", path_.c_str(), fullpath.c_str(), new_size);
339 XBT_WARN("File %s doesn't exist", path_.c_str());
343 XBT_WARN("New full path %s is not on the same mount point: %s.", fullpath.c_str(), mount_point_.c_str());
349 /* Check if the file is on local storage */
350 std::map<std::string, sg_size_t>* content = nullptr;
351 const char* name = "";
352 if (local_storage_) {
353 content = local_storage_->extension<FileSystemStorageExt>()->get_content();
354 name = local_storage_->get_cname();
357 content = local_disk_->extension<FileSystemDiskExt>()->get_content();
358 name = local_disk_->get_cname();
361 if (not content || content->find(path_) == content->end()) {
362 XBT_WARN("File %s is not on disk %s. Impossible to unlink", path_.c_str(), name);
365 XBT_DEBUG("UNLINK %s on disk '%s'", path_.c_str(), name);
368 local_storage_->extension<FileSystemStorageExt>()->decr_used_size(size_);
371 local_disk_->extension<FileSystemDiskExt>()->decr_used_size(size_);
373 // Remove the file from storage
374 content->erase(path_);
380 int File::remote_copy(sg_host_t host, const char* fullpath)
382 /* Find the host where the file is physically located and read it */
383 Host* src_host = nullptr;
384 if (local_storage_) {
385 src_host = local_storage_->get_host();
386 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname());
390 src_host = local_disk_->get_host();
391 XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname());
395 // if the current position is close to the end of the file, we may not be able to read the requested size
396 sg_size_t read_size = 0;
398 read_size = local_storage_->read(size_);
400 read_size = local_disk_->read(size_);
402 current_position_ += read_size;
404 Host* dst_host = host;
405 size_t longest_prefix_length = 0;
406 if (local_storage_) {
407 /* Find the host that owns the storage where the file has to be copied */
408 Storage* storage_dest = nullptr;
410 for (auto const& elm : host->get_mounted_storages()) {
411 std::string mount_point = std::string(fullpath).substr(0, elm.first.size());
412 if (mount_point == elm.first && elm.first.length() > longest_prefix_length) {
413 /* The current mount name is found in the full path and is bigger than the previous*/
414 longest_prefix_length = elm.first.length();
415 storage_dest = elm.second;
419 if (storage_dest != nullptr) {
420 /* Mount point found, retrieve the host the storage is attached to */
421 dst_host = storage_dest->get_host();
423 XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname());
429 Disk* dst_disk = nullptr;
431 for (auto const& disk : host->get_disks()) {
432 std::string current_mount = disk->extension<FileSystemDiskExt>()->get_mount_point();
433 std::string mount_point = std::string(fullpath).substr(0, current_mount.length());
434 if (mount_point == current_mount && current_mount.length() > longest_prefix_length) {
435 /* The current mount name is found in the full path and is bigger than the previous*/
436 longest_prefix_length = current_mount.length();
441 if (dst_disk == nullptr) {
442 XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname());
448 XBT_DEBUG("Initiate data transfer of %llu bytes between %s and %s.", read_size, src_host->get_cname(),
449 dst_host->get_cname());
450 src_host->send_to(dst_host, read_size);
453 /* Create file on remote host, write it and close it */
454 File* fd = new File(fullpath, dst_host, nullptr);
455 if (local_storage_) {
456 sg_size_t write_size = fd->local_storage_->write(read_size);
457 fd->local_storage_->extension<FileSystemStorageExt>()->incr_used_size(write_size);
458 (*(fd->local_storage_->extension<FileSystemStorageExt>()->get_content()))[path_] = size_;
461 fd->write(read_size);
466 int File::remote_move(sg_host_t host, const char* fullpath)
468 int res = remote_copy(host, fullpath);
473 FileSystemDiskExt::FileSystemDiskExt(simgrid::s4u::Disk* ptr)
475 const char* size_str = ptr->get_property("size");
477 size_ = surf_parse_get_size(size_str, "disk size", ptr->get_name());
479 const char* current_mount_str = ptr->get_property("mount");
480 if (current_mount_str)
481 mount_point_ = std::string(current_mount_str);
483 mount_point_ = std::string("/");
485 const char* content_str = ptr->get_property("content");
487 content_.reset(parse_content(content_str));
490 FileSystemStorageExt::FileSystemStorageExt(simgrid::s4u::Storage* ptr) : size_(ptr->get_impl()->size_)
492 content_.reset(parse_content(ptr->get_impl()->content_name_));
495 std::map<std::string, sg_size_t>* FileSystemDiskExt::parse_content(const std::string& filename)
497 if (filename.empty())
500 std::map<std::string, sg_size_t>* parse_content = new std::map<std::string, sg_size_t>();
502 std::ifstream* fs = surf_ifsopen(filename);
505 std::vector<std::string> tokens;
507 std::getline(*fs, line);
509 if (line.length() > 0) {
510 boost::split(tokens, line, boost::is_any_of(" \t"), boost::token_compress_on);
511 xbt_assert(tokens.size() == 2, "Parse error in %s: %s", filename.c_str(), line.c_str());
512 sg_size_t size = std::stoull(tokens.at(1));
515 parse_content->insert({tokens.front(), size});
517 } while (not fs->eof());
519 return parse_content;
522 std::map<std::string, sg_size_t>* FileSystemStorageExt::parse_content(const std::string& filename)
524 if (filename.empty())
527 std::map<std::string, sg_size_t>* parse_content = new std::map<std::string, sg_size_t>();
529 std::ifstream* fs = surf_ifsopen(filename);
532 std::vector<std::string> tokens;
534 std::getline(*fs, line);
536 if (line.length() > 0) {
537 boost::split(tokens, line, boost::is_any_of(" \t"), boost::token_compress_on);
538 xbt_assert(tokens.size() == 2, "Parse error in %s: %s", filename.c_str(), line.c_str());
539 sg_size_t size = std::stoull(tokens.at(1));
542 parse_content->insert({tokens.front(), size});
544 } while (not fs->eof());
546 return parse_content;
551 using simgrid::s4u::FileDescriptorHostExt;
552 using simgrid::s4u::FileSystemDiskExt;
553 using simgrid::s4u::FileSystemStorageExt;
555 static void on_disk_creation(simgrid::s4u::Disk& d)
557 d.extension_set(new FileSystemDiskExt(&d));
559 static void on_storage_creation(simgrid::s4u::Storage& st)
561 st.extension_set(new FileSystemStorageExt(&st));
564 static void on_host_creation(simgrid::s4u::Host& host)
566 host.extension_set<FileDescriptorHostExt>(new FileDescriptorHostExt());
569 static void on_platform_created()
571 for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
572 const char* remote_disk_str = host->get_property("remote_disk");
573 if (remote_disk_str) {
574 std::vector<std::string> tokens;
575 boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
576 std::string mount_point = tokens[0];
577 simgrid::s4u::Host* remote_host = simgrid::s4u::Host::by_name_or_null(tokens[2]);
578 xbt_assert(remote_host, "You're trying to access a host that does not exist. Please check your platform file");
580 simgrid::s4u::Disk* disk = nullptr;
581 for (auto const& d : remote_host->get_disks())
582 if (d->get_name() == tokens[1]) {
587 xbt_assert(disk, "You're trying to mount a disk that does not exist. Please check your platform file");
588 disk->extension<FileSystemDiskExt>()->add_remote_mount(remote_host, mount_point);
589 host->add_disk(disk);
591 XBT_DEBUG("Host '%s' wants to mount a remote disk: %s of %s mounted on %s", host->get_cname(), disk->get_cname(),
592 remote_host->get_cname(), mount_point.c_str());
593 XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size());
598 static void on_simulation_end()
600 XBT_DEBUG("Simulation is over, time to unregister remote disks if any");
601 for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
602 const char* remote_disk_str = host->get_property("remote_disk");
603 if (remote_disk_str) {
604 std::vector<std::string> tokens;
605 boost::split(tokens, remote_disk_str, boost::is_any_of(":"));
606 XBT_DEBUG("Host '%s' wants to unmount a remote disk: %s of %s mounted on %s", host->get_cname(),
607 tokens[1].c_str(), tokens[2].c_str(), tokens[0].c_str());
608 host->remove_disk(tokens[1]);
609 XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size());
614 /* **************************** Public interface *************************** */
615 /** @brief Initialize the file system plugin.
616 @ingroup plugin_filesystem
619 See the examples in :ref:`s4u_ex_disk_io`.
622 void sg_storage_file_system_init()
624 sg_storage_max_file_descriptors = 1024;
625 simgrid::config::bind_flag(sg_storage_max_file_descriptors, "storage/max_file_descriptors",
626 "Maximum number of concurrently opened files per host. Default is 1024");
628 if (not FileSystemStorageExt::EXTENSION_ID.valid()) {
629 FileSystemStorageExt::EXTENSION_ID = simgrid::s4u::Storage::extension_create<FileSystemStorageExt>();
630 simgrid::s4u::Storage::on_creation.connect(&on_storage_creation);
633 if (not FileSystemDiskExt::EXTENSION_ID.valid()) {
634 FileSystemDiskExt::EXTENSION_ID = simgrid::s4u::Disk::extension_create<FileSystemDiskExt>();
635 simgrid::s4u::Disk::on_creation.connect(&on_disk_creation);
638 if (not FileDescriptorHostExt::EXTENSION_ID.valid()) {
639 FileDescriptorHostExt::EXTENSION_ID = simgrid::s4u::Host::extension_create<FileDescriptorHostExt>();
640 simgrid::s4u::Host::on_creation.connect(&on_host_creation);
642 simgrid::s4u::Engine::on_platform_created.connect(&on_platform_created);
643 simgrid::s4u::Engine::on_simulation_end.connect(&on_simulation_end);
646 sg_file_t sg_file_open(const char* fullpath, void* data)
648 return new simgrid::s4u::File(fullpath, data);
651 sg_size_t sg_file_read(sg_file_t fd, sg_size_t size)
653 return fd->read(size);
656 sg_size_t sg_file_write(sg_file_t fd, sg_size_t size)
658 return fd->write(size);
661 void sg_file_close(sg_file_t fd)
666 /** Retrieves the path to the file
667 * @ingroup plugin_filesystem
669 const char* sg_file_get_name(sg_file_t fd)
671 xbt_assert((fd != nullptr), "Invalid file descriptor");
672 return fd->get_path();
675 /** Retrieves the size of the file
676 * @ingroup plugin_filesystem
678 sg_size_t sg_file_get_size(sg_file_t fd)
683 void sg_file_dump(sg_file_t fd)
688 /** Retrieves the user data associated with the file
689 * @ingroup plugin_filesystem
691 void* sg_file_get_data(sg_file_t fd)
693 return fd->get_data();
696 /** Changes the user data associated with the file
697 * @ingroup plugin_filesystem
699 void sg_file_set_data(sg_file_t fd, void* data)
705 * @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).
706 * @ingroup plugin_filesystem
708 * @param fd : file object that identifies the stream
709 * @param offset : number of bytes to offset from origin
710 * @param origin : Position used as reference for the offset. It is specified by one of the following constants defined
711 * in \<stdio.h\> exclusively to be used as arguments for this function (SEEK_SET = beginning of file,
712 * SEEK_CUR = current position of the file pointer, SEEK_END = end of file)
714 void sg_file_seek(sg_file_t fd, sg_offset_t offset, int origin)
716 fd->seek(offset, origin);
719 sg_size_t sg_file_tell(sg_file_t fd)
724 void sg_file_move(sg_file_t fd, const char* fullpath)
729 void sg_file_unlink(sg_file_t fd)
736 * @brief Copy a file to another location on a remote host.
737 * @ingroup plugin_filesystem
739 * @param file : the file to move
740 * @param host : the remote host where the file has to be copied
741 * @param fullpath : the complete path destination on the remote host
742 * @return If successful, the function returns 0. Otherwise, it returns -1.
744 int sg_file_rcopy(sg_file_t file, sg_host_t host, const char* fullpath)
746 return file->remote_copy(host, fullpath);
750 * @brief Move a file to another location on a remote host.
751 * @ingroup plugin_filesystem
753 * @param file : the file to move
754 * @param host : the remote host where the file has to be moved
755 * @param fullpath : the complete path destination on the remote host
756 * @return If successful, the function returns 0. Otherwise, it returns -1.
758 int sg_file_rmove(sg_file_t file, sg_host_t host, const char* fullpath)
760 return file->remote_move(host, fullpath);
763 sg_size_t sg_disk_get_size_free(sg_disk_t d)
765 return d->extension<FileSystemDiskExt>()->get_size() - d->extension<FileSystemDiskExt>()->get_used_size();
768 sg_size_t sg_disk_get_size_used(sg_disk_t d)
770 return d->extension<FileSystemDiskExt>()->get_used_size();
773 sg_size_t sg_disk_get_size(sg_disk_t d)
775 return d->extension<FileSystemDiskExt>()->get_size();
778 const char* sg_disk_get_mount_point(sg_disk_t d)
780 return d->extension<FileSystemDiskExt>()->get_mount_point();
783 sg_size_t sg_storage_get_size_free(sg_storage_t st)
785 return st->extension<FileSystemStorageExt>()->get_size() - st->extension<FileSystemStorageExt>()->get_used_size();
788 sg_size_t sg_storage_get_size_used(sg_storage_t st)
790 return st->extension<FileSystemStorageExt>()->get_used_size();
793 sg_size_t sg_storage_get_size(sg_storage_t st)
795 return st->extension<FileSystemStorageExt>()->get_size();
798 xbt_dict_t sg_storage_get_content(sg_storage_t storage)
800 std::map<std::string, sg_size_t>* content = 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));