1 /* Copyright (c) 2017-2018. 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 #ifndef SIMGRID_PLUGINS_FILE_SYSTEM_H_
7 #define SIMGRID_PLUGINS_FILE_SYSTEM_H_
9 #include <simgrid/forward.h>
17 XBT_PUBLIC void sg_storage_file_system_init();
18 XBT_PUBLIC sg_file_t sg_file_open(const char* fullpath, void* data);
19 XBT_PUBLIC sg_size_t sg_file_read(sg_file_t fd, sg_size_t size);
20 XBT_PUBLIC sg_size_t sg_file_write(sg_file_t fd, sg_size_t size);
21 XBT_PUBLIC void sg_file_close(sg_file_t fd);
23 XBT_PUBLIC const char* sg_file_get_name(sg_file_t fd);
24 XBT_PUBLIC sg_size_t sg_file_get_size(sg_file_t fd);
25 XBT_PUBLIC void sg_file_dump(sg_file_t fd);
26 XBT_PUBLIC void* sg_file_get_data(sg_file_t fd);
27 XBT_PUBLIC void sg_file_set_data(sg_file_t fd, void* data);
28 XBT_PUBLIC void sg_file_seek(sg_file_t fd, sg_offset_t offset, int origin);
29 XBT_PUBLIC sg_size_t sg_file_tell(sg_file_t fd);
30 XBT_PUBLIC void sg_file_move(sg_file_t fd, const char* fullpath);
31 XBT_PUBLIC void sg_file_unlink(sg_file_t fd);
32 XBT_PUBLIC int sg_file_rcopy(sg_file_t file, sg_host_t host, const char* fullpath);
33 XBT_PUBLIC int sg_file_rmove(sg_file_t file, sg_host_t host, const char* fullpath);
35 XBT_PUBLIC sg_size_t sg_storage_get_size_free(sg_storage_t st);
36 XBT_PUBLIC sg_size_t sg_storage_get_size_used(sg_storage_t st);
37 XBT_PUBLIC sg_size_t sg_storage_get_size(sg_storage_t st);
38 XBT_PUBLIC xbt_dict_t sg_storage_get_content(sg_storage_t storage);
40 XBT_PUBLIC xbt_dict_t sg_host_get_storage_content(sg_host_t host);
42 #define MSG_file_open(fullpath, data) sg_file_open(fullpath, data)
43 #define MSG_file_read(fd, size) sg_file_read(fd, size)
44 #define MSG_file_write(fd, size) sg_file_write(fd, size)
45 #define MSG_file_close(fd) sg_file_close(fd)
46 #define MSG_file_get_name(fd) sg_file_get_name(fd)
47 #define MSG_file_get_size(fd) sg_file_get_size(fd)
48 #define MSG_file_dump(fd) sg_file_dump(fd)
49 #define MSG_file_get_data(fd) sg_file_get_data(fd)
50 #define MSG_file_set_data(fd, data) sg_file_set_data(fd, data)
51 #define MSG_file_seek(fd, offset, origin) sg_file_seek(fd, offset, origin)
52 #define MSG_file_tell(fd) sg_file_tell(fd)
53 #define MSG_file_move(fd, fullpath) sg_file_get_size(fd, fullpath)
54 #define MSG_file_unlink(fd) sg_file_unlink(fd)
55 #define MSG_file_rcopy(file, host, fullpath) sg_file_rcopy(file, host, fullpath)
56 #define MSG_file_rmove(file, host, fullpath) sg_file_rmove(file, host, fullpath)
58 #define MSG_storage_file_system_init() sg_storage_file_system_init()
59 #define MSG_storage_get_free_size(st) sg_storage_get_size_free(st)
60 #define MSG_storage_get_used_size(st) sg_storage_get_size_used(st)
61 #define MSG_storage_get_size(st) sg_storage_get_size(st)
62 #define MSG_storage_get_content(st) sg_storage_get_content(st)
64 #define MSG_host_get_storage_content(st) sg_host_get_storage_content(st)
72 #include <xbt/Extendable.hpp>
80 /** @brief A simulated file
82 * Used to simulate the time it takes to access to a file, but does not really store any information.
84 * They are located on @ref simgrid::s4u::Storage that are accessed from a given @ref simgrid::s4u::Host through
86 * For now, you cannot change the mountpoints programatically, and must declare them from your platform file.
88 class XBT_PUBLIC File {
90 File(std::string fullpath, void* userdata);
91 File(std::string fullpath, sg_host_t host, void* userdata);
94 /** Retrieves the path to the file */
95 const char* getPath() { return fullpath_.c_str(); }
97 /** Simulates a local read action. Returns the size of data actually read */
98 sg_size_t read(sg_size_t size);
100 /** Simulates a write action. Returns the size of data actually written. */
101 sg_size_t write(sg_size_t size);
103 /** Allows to store user data on that host */
104 void setUserdata(void* data) { userdata_ = data; }
105 /** Retrieves the previously stored data */
106 void* getUserdata() { return userdata_; }
109 void seek(sg_offset_t pos); /** Sets the file head to the given position. */
110 void seek(sg_offset_t pos, int origin); /** Sets the file head to the given position from a given origin. */
111 sg_size_t tell(); /** Retrieves the current file position */
113 /** Rename a file. WARNING: It is forbidden to move the file to another mount point */
114 void move(std::string fullpath);
115 int remoteCopy(sg_host_t host, const char* fullpath);
116 int remoteMove(sg_host_t host, const char* fullpath);
118 int unlink(); /** Remove a file from the contents of a disk */
122 Storage* localStorage;
123 std::string mount_point_;
128 std::string fullpath_;
129 sg_size_t current_position_ = SEEK_SET;
130 void* userdata_ = nullptr;
133 class XBT_PUBLIC FileSystemStorageExt {
135 static simgrid::xbt::Extension<Storage, FileSystemStorageExt> EXTENSION_ID;
136 explicit FileSystemStorageExt(Storage* ptr);
137 ~FileSystemStorageExt();
138 std::map<std::string, sg_size_t>* parseContent(std::string filename);
139 std::map<std::string, sg_size_t>* getContent() { return content_; }
140 sg_size_t getSize() { return size_; }
141 sg_size_t getUsedSize() { return usedSize_; }
142 void decrUsedSize(sg_size_t size) { usedSize_ -= size; }
143 void incrUsedSize(sg_size_t size) { usedSize_ += size; }
146 std::map<std::string, sg_size_t>* content_;
147 sg_size_t usedSize_ = 0;
151 class XBT_PUBLIC FileDescriptorHostExt {
153 static simgrid::xbt::Extension<Host, FileDescriptorHostExt> EXTENSION_ID;
154 FileDescriptorHostExt() = default;
155 ~FileDescriptorHostExt() { delete file_descriptor_table; }
156 std::vector<int>* file_descriptor_table = nullptr; // Created lazily on need
159 } // namespace simgrid