X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/3ad41a910feecc815ecd91d5cfceaa740068d7b4..b9625f82f86db0674e911887addce45dca31b57f:/src/plugins/file_system/s4u_FileSystem.cpp diff --git a/src/plugins/file_system/s4u_FileSystem.cpp b/src/plugins/file_system/s4u_FileSystem.cpp index 25893f49d8..241189486b 100644 --- a/src/plugins/file_system/s4u_FileSystem.cpp +++ b/src/plugins/file_system/s4u_FileSystem.cpp @@ -1,13 +1,15 @@ -/* Copyright (c) 2015-2019. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2015-2020. The SimGrid Team. All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ #include "simgrid/plugins/file_system.h" #include "simgrid/s4u/Actor.hpp" +#include "simgrid/s4u/Engine.hpp" #include "src/surf/HostImpl.hpp" #include "src/surf/xml/platf_private.hpp" #include "xbt/config.hpp" +#include "xbt/parse_units.hpp" #include #include @@ -16,108 +18,152 @@ #include #include -XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_file, "S4U files"); +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_file, s4u, "S4U files"); int sg_storage_max_file_descriptors = 1024; +/** @defgroup plugin_filesystem Plugin FileSystem + * + * This adds the notion of Files on top of the storage notion that provided by the core of SimGrid. + * Activate this plugin at will. + */ + namespace simgrid { + +template class xbt::Extendable; + namespace s4u { simgrid::xbt::Extension FileSystemDiskExt::EXTENSION_ID; simgrid::xbt::Extension FileSystemStorageExt::EXTENSION_ID; simgrid::xbt::Extension FileDescriptorHostExt::EXTENSION_ID; -File::File(const std::string& fullpath, void* userdata) : File(fullpath, Host::current(), userdata){}; - -File::File(const std::string& fullpath, sg_host_t host, void* userdata) : fullpath_(fullpath), userdata_(userdata) +Storage* File::find_local_storage_on(Host* host) { - // this cannot fail because we get a xbt_die if the mountpoint does not exist - if (not host->get_mounted_storages().empty()) { - Storage* st = nullptr; - size_t longest_prefix_length = 0; - XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath_.c_str(), host->get_cname()); + Storage* st = nullptr; + size_t longest_prefix_length = 0; + XBT_DEBUG("Search for storage name for '%s' on '%s'", fullpath_.c_str(), host->get_cname()); - for (auto const& mnt : host->get_mounted_storages()) { - XBT_DEBUG("See '%s'", mnt.first.c_str()); - mount_point_ = fullpath_.substr(0, mnt.first.length()); + for (auto const& mnt : host->get_mounted_storages()) { + XBT_DEBUG("See '%s'", mnt.first.c_str()); + mount_point_ = fullpath_.substr(0, mnt.first.length()); - if (mount_point_ == mnt.first && mnt.first.length() > longest_prefix_length) { - /* The current mount name is found in the full path and is bigger than the previous*/ - longest_prefix_length = mnt.first.length(); - st = mnt.second; - } + if (mount_point_ == mnt.first && mnt.first.length() > longest_prefix_length) { + /* The current mount name is found in the full path and is bigger than the previous*/ + longest_prefix_length = mnt.first.length(); + st = mnt.second; + } + } + if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/ + mount_point_ = fullpath_.substr(0, longest_prefix_length); + path_ = fullpath_.substr(longest_prefix_length, fullpath_.length()); + } else + xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname()); + + return st; +} + +Disk* File::find_local_disk_on(const Host* host) +{ + Disk* d = nullptr; + size_t longest_prefix_length = 0; + for (auto const& disk : host->get_disks()) { + std::string current_mount; + if (disk->get_host() != host) + current_mount = disk->extension()->get_mount_point(disk->get_host()); + else + current_mount = disk->extension()->get_mount_point(); + mount_point_ = fullpath_.substr(0, current_mount.length()); + if (mount_point_ == current_mount && current_mount.length() > longest_prefix_length) { + /* The current mount name is found in the full path and is bigger than the previous*/ + longest_prefix_length = current_mount.length(); + d = disk; } if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/ mount_point_ = fullpath_.substr(0, longest_prefix_length); - path_ = fullpath_.substr(longest_prefix_length, fullpath_.length()); + if (mount_point_ == std::string("/")) + path_ = fullpath_; + else + path_ = fullpath_.substr(longest_prefix_length, fullpath_.length()); + XBT_DEBUG("%s + %s", mount_point_.c_str(), path_.c_str()); } else xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname()); - - local_storage_ = st; } - if (not host->get_disks().empty()) { - Disk* d = nullptr; - size_t longest_prefix_length = 0; - for (auto const& disk : host->get_disks()) { - const char* current_mount_str = disk->get_property("mount"); - if (current_mount_str) { - std::string current_mount = std::string(current_mount_str); - mount_point_ = fullpath_.substr(0, current_mount.length()); - if (mount_point_ == current_mount && current_mount.length() > longest_prefix_length) { - /* The current mount name is found in the full path and is bigger than the previous*/ - longest_prefix_length = current_mount.length(); - d = disk; - } - if (longest_prefix_length > 0) { /* Mount point found, split fullpath_ into mount_name and path+filename*/ - mount_point_ = fullpath_.substr(0, longest_prefix_length); - path_ = fullpath_.substr(longest_prefix_length, fullpath_.length()); - } else - xbt_die("Can't find mount point for '%s' on '%s'", fullpath_.c_str(), host->get_cname()); - } + return d; +} + +File::File(const std::string& fullpath, void* userdata) : File(fullpath, Host::current(), userdata) {} + +File::File(const std::string& fullpath, sg_host_t host, void* userdata) : fullpath_(fullpath) +{ + kernel::actor::simcall([this, &host, userdata] { + this->set_data(userdata); + // this cannot fail because we get a xbt_die if the mountpoint does not exist + if (not host->get_mounted_storages().empty()) { + local_storage_ = find_local_storage_on(host); + } + if (not host->get_disks().empty()) { + local_disk_ = find_local_disk_on(host); } - local_disk_ = d; - } - // assign a file descriptor id to the newly opened File - FileDescriptorHostExt* ext = host->extension(); - if (ext->file_descriptor_table == nullptr) { - ext->file_descriptor_table.reset(new std::vector(sg_storage_max_file_descriptors)); - std::iota(ext->file_descriptor_table->rbegin(), ext->file_descriptor_table->rend(), 0); // Fill with ..., 1, 0. - } - xbt_assert(not ext->file_descriptor_table->empty(), "Too much files are opened! Some have to be closed."); - desc_id = ext->file_descriptor_table->back(); - ext->file_descriptor_table->pop_back(); + // assign a file descriptor id to the newly opened File + FileDescriptorHostExt* ext = host->extension(); + if (ext->file_descriptor_table == nullptr) { + ext->file_descriptor_table.reset(new std::vector(sg_storage_max_file_descriptors)); + std::iota(ext->file_descriptor_table->rbegin(), ext->file_descriptor_table->rend(), 0); // Fill with ..., 1, 0. + } + xbt_assert(not ext->file_descriptor_table->empty(), "Too much files are opened! Some have to be closed."); + desc_id = ext->file_descriptor_table->back(); + ext->file_descriptor_table->pop_back(); - XBT_DEBUG("\tOpen file '%s'", path_.c_str()); - std::map* content; - if (local_storage_) - content = local_storage_->extension()->get_content(); - else - content = local_disk_->extension()->get_content(); - // if file does not exist create an empty file - auto sz = content->find(path_); - if (sz != content->end()) { - size_ = sz->second; - } else { - size_ = 0; - content->insert({path_, size_}); - XBT_DEBUG("File '%s' was not found, file created.", path_.c_str()); - } + XBT_DEBUG("\tOpen file '%s'", path_.c_str()); + std::map* content = nullptr; + if (local_storage_) + content = local_storage_->extension()->get_content(); + + if (local_disk_) + content = local_disk_->extension()->get_content(); + + // if file does not exist create an empty file + if (content) { + auto sz = content->find(path_); + if (sz != content->end()) { + size_ = sz->second; + } else { + size_ = 0; + content->insert({path_, size_}); + XBT_DEBUG("File '%s' was not found, file created.", path_.c_str()); + } + } + }); } File::~File() { - Host::current()->extension()->file_descriptor_table->push_back(desc_id); + std::vector* desc_table = + Host::current()->extension()->file_descriptor_table.get(); + kernel::actor::simcall([this, desc_table] { desc_table->push_back(this->desc_id); }); } -void File::dump() +void File::dump() const { - XBT_INFO("File Descriptor information:\n" - "\t\tFull path: '%s'\n" - "\t\tSize: %llu\n" - "\t\tMount point: '%s'\n" - "\t\tStorage Id: '%s'\n" - "\t\tStorage Type: '%s'\n" - "\t\tFile Descriptor Id: %d", - get_path(), size_, mount_point_.c_str(), local_storage_->get_cname(), local_storage_->get_type(), desc_id); + if (local_storage_) + XBT_INFO("File Descriptor information:\n" + "\t\tFull path: '%s'\n" + "\t\tSize: %llu\n" + "\t\tMount point: '%s'\n" + "\t\tStorage Id: '%s'\n" + "\t\tStorage Type: '%s'\n" + "\t\tFile Descriptor Id: %d", + get_path(), size_, mount_point_.c_str(), local_storage_->get_cname(), local_storage_->get_type(), desc_id); + if (local_disk_) + XBT_INFO("File Descriptor information:\n" + "\t\tFull path: '%s'\n" + "\t\tSize: %llu\n" + "\t\tMount point: '%s'\n" + "\t\tDisk Id: '%s'\n" + "\t\tHost Id: '%s'\n" + "\t\tFile Descriptor Id: %d", + get_path(), size_, mount_point_.c_str(), local_disk_->get_cname(), local_disk_->get_host()->get_cname(), + desc_id); } sg_size_t File::read(sg_size_t size) @@ -125,106 +171,133 @@ sg_size_t File::read(sg_size_t size) if (size_ == 0) /* Nothing to read, return */ return 0; sg_size_t read_size = 0; - + Host* host = nullptr; if (local_storage_) { /* Find the host where the file is physically located and read it */ - Host* host = local_storage_->get_host(); + host = local_storage_->get_host(); XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname()); // if the current position is close to the end of the file, we may not be able to read the requested size read_size = local_storage_->read(std::min(size, size_ - current_position_)); current_position_ += read_size; - - if (host->get_name() != Host::current()->get_name() && read_size > 0) { - /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */ - XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), read_size); - host->send_to(Host::current(), read_size); - } } if (local_disk_) { /* Find the host where the file is physically located and read it */ + host = local_disk_->get_host(); XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname()); // if the current position is close to the end of the file, we may not be able to read the requested size read_size = local_disk_->read(std::min(size, size_ - current_position_)); current_position_ += read_size; } + if (host && host->get_name() != Host::current()->get_name() && read_size > 0) { + /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */ + XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), read_size); + host->sendto(Host::current(), read_size); + } + return read_size; } /** @brief Write into a file (local or remote) + * @ingroup plugin_filesystem * * @param size of the file to write * @return the number of bytes successfully write or -1 if an error occurred */ -sg_size_t File::write(sg_size_t size, int write_inside) +sg_size_t File::write_on_disk(sg_size_t size, bool write_inside) { - if (size == 0) /* Nothing to write, return */ - return 0; sg_size_t write_size = 0; + /* Find the host where the file is physically located (remote or local)*/ + Host* host = local_disk_->get_host(); - if (local_storage_) { - /* Find the host where the file is physically located (remote or local)*/ - Host* host = local_storage_->get_host(); - - if (host->get_name() != Host::current()->get_name()) { - /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */ - XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size); - Host::current()->send_to(host, size); - } - - XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_storage_->get_cname(), size, - size_, sg_storage_get_size_used(local_storage_), sg_storage_get_size(local_storage_)); - // If the storage is full before even starting to write - if (sg_storage_get_size_used(local_storage_) >= sg_storage_get_size(local_storage_)) - return 0; - if (write_inside == 0) { - /* Substract the part of the file that might disappear from the used sized on the storage element */ - local_storage_->extension()->decr_used_size(size_ - current_position_); - write_size = local_storage_->write(size); - local_storage_->extension()->incr_used_size(write_size); - current_position_ += write_size; + if (host && host->get_name() != Host::current()->get_name()) { + /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */ + XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size); + Host::current()->sendto(host, size); + } + XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_disk_->get_cname(), size, size_, + sg_disk_get_size_used(local_disk_), sg_disk_get_size(local_disk_)); + // If the storage is full before even starting to write + if (sg_disk_get_size_used(local_disk_) >= sg_disk_get_size(local_disk_)) + return 0; + if (not write_inside) { + /* Subtract the part of the file that might disappear from the used sized on the storage element */ + local_disk_->extension()->decr_used_size(size_ - current_position_); + write_size = local_disk_->write(size); + local_disk_->extension()->incr_used_size(write_size); + current_position_ += write_size; + size_ = current_position_; + } else { + write_size = local_disk_->write(size); + current_position_ += write_size; + if (current_position_ > size_) size_ = current_position_; - } else { - write_size = local_storage_->write(size); - current_position_ += write_size; - if (current_position_ > size_) - size_ = current_position_; - } - std::map* content = local_storage_->extension()->get_content(); + } + kernel::actor::simcall([this] { + std::map* content = local_disk_->extension()->get_content(); content->erase(path_); content->insert({path_, size_}); + }); + + return write_size; +} + +sg_size_t File::write_on_storage(sg_size_t size, bool write_inside) +{ + sg_size_t write_size = 0; + /* Find the host where the file is physically located (remote or local)*/ + Host* host = local_storage_->get_host(); + + if (host && host->get_name() != Host::current()->get_name()) { + /* the file is hosted on a remote host, initiate a communication between src and dest hosts for data transfer */ + XBT_DEBUG("File is on %s remote host, initiate data transfer of %llu bytes.", host->get_cname(), size); + Host::current()->sendto(host, size); } - if (local_disk_) { - XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_disk_->get_cname(), size, size_, - sg_disk_get_size_used(local_disk_), sg_disk_get_size(local_disk_)); - // If the storage is full before even starting to write - if (sg_disk_get_size_used(local_disk_) >= sg_disk_get_size(local_disk_)) - return 0; - if (write_inside == 0) { - /* Substract the part of the file that might disappear from the used sized on the storage element */ - local_disk_->extension()->decr_used_size(size_ - current_position_); - write_size = local_disk_->write(size); - local_disk_->extension()->incr_used_size(write_size); - current_position_ += write_size; + XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu' '%llu:%llu'", get_path(), local_storage_->get_cname(), size, size_, + sg_storage_get_size_used(local_storage_), sg_storage_get_size(local_storage_)); + // If the storage is full before even starting to write + if (sg_storage_get_size_used(local_storage_) >= sg_storage_get_size(local_storage_)) + return 0; + if (not write_inside) { + /* Subtract the part of the file that might disappear from the used sized on the storage element */ + local_storage_->extension()->decr_used_size(size_ - current_position_); + write_size = local_storage_->write(size); + local_storage_->extension()->incr_used_size(write_size); + current_position_ += write_size; + size_ = current_position_; + } else { + write_size = local_storage_->write(size); + current_position_ += write_size; + if (current_position_ > size_) size_ = current_position_; - } else { - write_size = local_disk_->write(size); - current_position_ += write_size; - if (current_position_ > size_) - size_ = current_position_; - } - std::map* content = local_disk_->extension()->get_content(); + } + kernel::actor::simcall([this] { + std::map* content = local_storage_->extension()->get_content(); content->erase(path_); content->insert({path_, size_}); - } + }); + return write_size; } -sg_size_t File::size() +sg_size_t File::write(sg_size_t size, bool write_inside) +{ + if (size == 0) /* Nothing to write, return */ + return 0; + + if (local_disk_) + return write_on_disk(size, write_inside); + if (local_storage_) + return write_on_storage(size, write_inside); + + return 0; +} + +sg_size_t File::size() const { return size_; } @@ -251,40 +324,42 @@ void File::seek(sg_offset_t offset, int origin) } } -sg_size_t File::tell() +sg_size_t File::tell() const { return current_position_; } -void File::move(const std::string& fullpath) +void File::move(const std::string& fullpath) const { /* Check if the new full path is on the same mount point */ if (fullpath.compare(0, mount_point_.length(), mount_point_) == 0) { - std::map* content; + std::map* content = nullptr; if (local_storage_) content = local_storage_->extension()->get_content(); if (local_disk_) content = local_disk_->extension()->get_content(); - auto sz = content->find(path_); - if (sz != content->end()) { // src file exists - sg_size_t new_size = sz->second; - content->erase(path_); - std::string path = fullpath.substr(mount_point_.length(), fullpath.length()); - content->insert({path.c_str(), new_size}); - XBT_DEBUG("Move file from %s to %s, size '%llu'", path_.c_str(), fullpath.c_str(), new_size); - } else { - XBT_WARN("File %s doesn't exist", path_.c_str()); + if (content) { + auto sz = content->find(path_); + if (sz != content->end()) { // src file exists + sg_size_t new_size = sz->second; + content->erase(path_); + std::string path = fullpath.substr(mount_point_.length(), fullpath.length()); + content->insert({path.c_str(), new_size}); + XBT_DEBUG("Move file from %s to %s, size '%llu'", path_.c_str(), fullpath.c_str(), new_size); + } else { + XBT_WARN("File %s doesn't exist", path_.c_str()); + } } } else { XBT_WARN("New full path %s is not on the same mount point: %s.", fullpath.c_str(), mount_point_.c_str()); } } -int File::unlink() +int File::unlink() const { /* Check if the file is on local storage */ - std::map* content; - const char* name = nullptr; + std::map* content = nullptr; + const char* name = ""; if (local_storage_) { content = local_storage_->extension()->get_content(); name = local_storage_->get_cname(); @@ -294,18 +369,20 @@ int File::unlink() name = local_disk_->get_cname(); } - if (content->find(path_) == content->end()) { + if (not content || content->find(path_) == content->end()) { XBT_WARN("File %s is not on disk %s. Impossible to unlink", path_.c_str(), name); return -1; } else { XBT_DEBUG("UNLINK %s on disk '%s'", path_.c_str(), name); + if (local_storage_) local_storage_->extension()->decr_used_size(size_); + if (local_disk_) local_disk_->extension()->decr_used_size(size_); // Remove the file from storage - content->erase(fullpath_); + content->erase(path_); return 0; } @@ -314,45 +391,85 @@ int File::unlink() int File::remote_copy(sg_host_t host, const char* fullpath) { /* Find the host where the file is physically located and read it */ - Storage* storage_src = local_storage_; - Host* src_host = storage_src->get_host(); + Host* src_host = nullptr; + if (local_storage_) { + src_host = local_storage_->get_host(); + XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname()); + } + + if (local_disk_) { + src_host = local_disk_->get_host(); + XBT_DEBUG("READ %s on disk '%s'", get_path(), local_disk_->get_cname()); + } + seek(0, SEEK_SET); - XBT_DEBUG("READ %s on disk '%s'", get_path(), local_storage_->get_cname()); // if the current position is close to the end of the file, we may not be able to read the requested size - sg_size_t read_size = local_storage_->read(size_); + sg_size_t read_size = 0; + if (local_storage_) + read_size = local_storage_->read(size_); + if (local_disk_) + read_size = local_disk_->read(size_); + current_position_ += read_size; - /* Find the host that owns the storage where the file has to be copied */ - Storage* storage_dest = nullptr; - Host* dst_host; + Host* dst_host = host; size_t longest_prefix_length = 0; + if (local_storage_) { + /* Find the host that owns the storage where the file has to be copied */ + const Storage* storage_dest = nullptr; - for (auto const& elm : host->get_mounted_storages()) { - std::string mount_point = std::string(fullpath).substr(0, elm.first.size()); - if (mount_point == elm.first && elm.first.length() > longest_prefix_length) { - /* The current mount name is found in the full path and is bigger than the previous*/ - longest_prefix_length = elm.first.length(); - storage_dest = elm.second; + for (auto const& elm : host->get_mounted_storages()) { + std::string mount_point = std::string(fullpath).substr(0, elm.first.size()); + if (mount_point == elm.first && elm.first.length() > longest_prefix_length) { + /* The current mount name is found in the full path and is bigger than the previous*/ + longest_prefix_length = elm.first.length(); + storage_dest = elm.second; + } + } + + if (storage_dest != nullptr) { + /* Mount point found, retrieve the host the storage is attached to */ + dst_host = storage_dest->get_host(); + } else { + XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname()); + return -1; } } - if (storage_dest != nullptr) { - /* Mount point found, retrieve the host the storage is attached to */ - dst_host = storage_dest->get_host(); - } else { - XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname()); - return -1; + if (local_disk_) { + const Disk* dst_disk = nullptr; + + for (auto const& disk : host->get_disks()) { + std::string current_mount = disk->extension()->get_mount_point(); + std::string mount_point = std::string(fullpath).substr(0, current_mount.length()); + if (mount_point == current_mount && current_mount.length() > longest_prefix_length) { + /* The current mount name is found in the full path and is bigger than the previous*/ + longest_prefix_length = current_mount.length(); + dst_disk = disk; + } + } + + if (dst_disk == nullptr) { + XBT_WARN("Can't find mount point for '%s' on destination host '%s'", fullpath, host->get_cname()); + return -1; + } } - XBT_DEBUG("Initiate data transfer of %llu bytes between %s and %s.", read_size, src_host->get_cname(), - storage_dest->get_host()->get_cname()); - src_host->send_to(dst_host, read_size); + if (src_host) { + XBT_DEBUG("Initiate data transfer of %llu bytes between %s and %s.", read_size, src_host->get_cname(), + dst_host->get_cname()); + src_host->sendto(dst_host, read_size); + } /* Create file on remote host, write it and close it */ File* fd = new File(fullpath, dst_host, nullptr); - sg_size_t write_size = fd->local_storage_->write(read_size); - fd->local_storage_->extension()->incr_used_size(write_size); - (*(fd->local_storage_->extension()->get_content()))[path_] = size_; + if (local_storage_) { + sg_size_t write_size = fd->local_storage_->write(read_size); + fd->local_storage_->extension()->incr_used_size(write_size); + (*(fd->local_storage_->extension()->get_content()))[path_] = size_; + } + if (local_disk_) + fd->write(read_size); delete fd; return 0; } @@ -364,19 +481,27 @@ int File::remote_move(sg_host_t host, const char* fullpath) return res; } -FileSystemDiskExt::FileSystemDiskExt(simgrid::s4u::Disk* ptr) +FileSystemDiskExt::FileSystemDiskExt(const Disk* ptr) { const char* size_str = ptr->get_property("size"); + std::string dummyfile; + if (size_str) + size_ = surf_parse_get_size(dummyfile, -1, size_str, "disk size", ptr->get_name()); + + const char* current_mount_str = ptr->get_property("mount"); + if (current_mount_str) + mount_point_ = std::string(current_mount_str); + else + mount_point_ = std::string("/"); + const char* content_str = ptr->get_property("content"); - size_ = size_str ? surf_parse_get_size(size_str, "disk size", ptr->get_name()) : 0; if (content_str) content_.reset(parse_content(content_str)); } -FileSystemStorageExt::FileSystemStorageExt(simgrid::s4u::Storage* ptr) +FileSystemStorageExt::FileSystemStorageExt(const Storage* ptr) : size_(ptr->get_impl()->size_) { content_.reset(parse_content(ptr->get_impl()->content_name_)); - size_ = ptr->get_impl()->size_; } std::map* FileSystemDiskExt::parse_content(const std::string& filename) @@ -387,6 +512,8 @@ std::map* FileSystemDiskExt::parse_content(const std::st std::map* parse_content = new std::map(); std::ifstream* fs = surf_ifsopen(filename); + xbt_assert(not fs->fail(), "Cannot open file '%s' (path=%s)", filename.c_str(), + (boost::join(surf_path, ":")).c_str()); std::string line; std::vector tokens; @@ -414,6 +541,8 @@ std::map* FileSystemStorageExt::parse_content(const std: std::map* parse_content = new std::map(); std::ifstream* fs = surf_ifsopen(filename); + xbt_assert(not fs->fail(), "Cannot open file '%s' (path=%s)", filename.c_str(), + (boost::join(surf_path, ":")).c_str()); std::string line; std::vector tokens; @@ -432,6 +561,26 @@ std::map* FileSystemStorageExt::parse_content(const std: delete fs; return parse_content; } + +void FileSystemStorageExt::decr_used_size(sg_size_t size) +{ + simgrid::kernel::actor::simcall([this, size] { used_size_ -= size; }); +} + +void FileSystemStorageExt::incr_used_size(sg_size_t size) +{ + simgrid::kernel::actor::simcall([this, size] { used_size_ += size; }); +} + +void FileSystemDiskExt::decr_used_size(sg_size_t size) +{ + simgrid::kernel::actor::simcall([this, size] { used_size_ -= size; }); +} + +void FileSystemDiskExt::incr_used_size(sg_size_t size) +{ + simgrid::kernel::actor::simcall([this, size] { used_size_ += size; }); +} } } @@ -453,7 +602,59 @@ static void on_host_creation(simgrid::s4u::Host& host) host.extension_set(new FileDescriptorHostExt()); } +static void on_platform_created() +{ + for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) { + const char* remote_disk_str = host->get_property("remote_disk"); + if (remote_disk_str) { + std::vector tokens; + boost::split(tokens, remote_disk_str, boost::is_any_of(":")); + std::string mount_point = tokens[0]; + simgrid::s4u::Host* remote_host = simgrid::s4u::Host::by_name_or_null(tokens[2]); + xbt_assert(remote_host, "You're trying to access a host that does not exist. Please check your platform file"); + + simgrid::s4u::Disk* disk = nullptr; + for (auto const& d : remote_host->get_disks()) + if (d->get_name() == tokens[1]) { + disk = d; + break; + } + + xbt_assert(disk, "You're trying to mount a disk that does not exist. Please check your platform file"); + disk->extension()->add_remote_mount(remote_host, mount_point); + host->add_disk(disk); + + XBT_DEBUG("Host '%s' wants to mount a remote disk: %s of %s mounted on %s", host->get_cname(), disk->get_cname(), + remote_host->get_cname(), mount_point.c_str()); + XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size()); + } + } +} + +static void on_simulation_end() +{ + XBT_DEBUG("Simulation is over, time to unregister remote disks if any"); + for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) { + const char* remote_disk_str = host->get_property("remote_disk"); + if (remote_disk_str) { + std::vector tokens; + boost::split(tokens, remote_disk_str, boost::is_any_of(":")); + XBT_DEBUG("Host '%s' wants to unmount a remote disk: %s of %s mounted on %s", host->get_cname(), + tokens[1].c_str(), tokens[2].c_str(), tokens[0].c_str()); + host->remove_disk(tokens[1]); + XBT_DEBUG("Host '%s' now has %zu disks", host->get_cname(), host->get_disks().size()); + } + } +} + /* **************************** Public interface *************************** */ +/** @brief Initialize the file system plugin. + @ingroup plugin_filesystem + + @beginrst + See the examples in :ref:`s4u_ex_disk_io`. + @endrst + */ void sg_storage_file_system_init() { sg_storage_max_file_descriptors = 1024; @@ -474,6 +675,8 @@ void sg_storage_file_system_init() FileDescriptorHostExt::EXTENSION_ID = simgrid::s4u::Host::extension_create(); simgrid::s4u::Host::on_creation.connect(&on_host_creation); } + simgrid::s4u::Engine::on_platform_created.connect(&on_platform_created); + simgrid::s4u::Engine::on_simulation_end.connect(&on_simulation_end); } sg_file_t sg_file_open(const char* fullpath, void* data) @@ -491,40 +694,52 @@ sg_size_t sg_file_write(sg_file_t fd, sg_size_t size) return fd->write(size); } -void sg_file_close(sg_file_t fd) +void sg_file_close(const_sg_file_t fd) { delete fd; } -const char* sg_file_get_name(sg_file_t fd) +/** Retrieves the path to the file + * @ingroup plugin_filesystem + */ +const char* sg_file_get_name(const_sg_file_t fd) { xbt_assert((fd != nullptr), "Invalid file descriptor"); return fd->get_path(); } -sg_size_t sg_file_get_size(sg_file_t fd) +/** Retrieves the size of the file + * @ingroup plugin_filesystem + */ +sg_size_t sg_file_get_size(const_sg_file_t fd) { return fd->size(); } -void sg_file_dump(sg_file_t fd) +void sg_file_dump(const_sg_file_t fd) { fd->dump(); } -void* sg_file_get_data(sg_file_t fd) +/** Retrieves the user data associated with the file + * @ingroup plugin_filesystem + */ +void* sg_file_get_data(const_sg_file_t fd) { - return fd->get_userdata(); + return fd->get_data(); } +/** Changes the user data associated with the file + * @ingroup plugin_filesystem + */ void sg_file_set_data(sg_file_t fd, void* data) { - fd->set_userdata(data); + fd->set_data(data); } /** - * @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). + * @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). + * @ingroup plugin_filesystem * * @param fd : file object that identifies the stream * @param offset : number of bytes to offset from origin @@ -537,12 +752,12 @@ void sg_file_seek(sg_file_t fd, sg_offset_t offset, int origin) fd->seek(offset, origin); } -sg_size_t sg_file_tell(sg_file_t fd) +sg_size_t sg_file_tell(const_sg_file_t fd) { return fd->tell(); } -void sg_file_move(sg_file_t fd, const char* fullpath) +void sg_file_move(const_sg_file_t fd, const char* fullpath) { fd->move(fullpath); } @@ -555,6 +770,8 @@ void sg_file_unlink(sg_file_t fd) /** * @brief Copy a file to another location on a remote host. + * @ingroup plugin_filesystem + * * @param file : the file to move * @param host : the remote host where the file has to be copied * @param fullpath : the complete path destination on the remote host @@ -567,6 +784,8 @@ int sg_file_rcopy(sg_file_t file, sg_host_t host, const char* fullpath) /** * @brief Move a file to another location on a remote host. + * @ingroup plugin_filesystem + * * @param file : the file to move * @param host : the remote host where the file has to be moved * @param fullpath : the complete path destination on the remote host @@ -577,46 +796,52 @@ int sg_file_rmove(sg_file_t file, sg_host_t host, const char* fullpath) return file->remote_move(host, fullpath); } -sg_size_t sg_disk_get_size_free(sg_disk_t d) +sg_size_t sg_disk_get_size_free(const_sg_disk_t d) { return d->extension()->get_size() - d->extension()->get_used_size(); } -sg_size_t sg_disk_get_size_used(sg_disk_t d) +sg_size_t sg_disk_get_size_used(const_sg_disk_t d) { return d->extension()->get_used_size(); } -sg_size_t sg_disk_get_size(sg_disk_t d) +sg_size_t sg_disk_get_size(const_sg_disk_t d) { return d->extension()->get_size(); } -sg_size_t sg_storage_get_size_free(sg_storage_t st) +const char* sg_disk_get_mount_point(const_sg_disk_t d) +{ + return d->extension()->get_mount_point(); +} + +sg_size_t sg_storage_get_size_free(const_sg_storage_t st) { return st->extension()->get_size() - st->extension()->get_used_size(); } -sg_size_t sg_storage_get_size_used(sg_storage_t st) +sg_size_t sg_storage_get_size_used(const_sg_storage_t st) { return st->extension()->get_used_size(); } -sg_size_t sg_storage_get_size(sg_storage_t st) +sg_size_t sg_storage_get_size(const_sg_storage_t st) { return st->extension()->get_size(); } -xbt_dict_t sg_storage_get_content(sg_storage_t storage) +xbt_dict_t sg_storage_get_content(const_sg_storage_t storage) { - std::map* content = storage->extension()->get_content(); + const std::map* content = + storage->extension()->get_content(); // Note: ::operator delete is ok here (no destructor called) since the dict elements are of POD type sg_size_t. xbt_dict_t content_as_dict = xbt_dict_new_homogeneous(::operator delete); for (auto const& entry : *content) { sg_size_t* psize = new sg_size_t; *psize = entry.second; - xbt_dict_set(content_as_dict, entry.first.c_str(), psize, nullptr); + xbt_dict_set(content_as_dict, entry.first.c_str(), psize); } return content_as_dict; } @@ -626,7 +851,7 @@ xbt_dict_t sg_host_get_storage_content(sg_host_t host) xbt_assert((host != nullptr), "Invalid parameters"); xbt_dict_t contents = xbt_dict_new_homogeneous(nullptr); for (auto const& elm : host->get_mounted_storages()) - xbt_dict_set(contents, elm.first.c_str(), sg_storage_get_content(elm.second), nullptr); + xbt_dict_set(contents, elm.first.c_str(), sg_storage_get_content(elm.second)); return contents; }