X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/e6e59f1a8345f70bc3a44d7b2789d0ab9a8bdc9b..2eba6b843463b01622d79c8ccc55bdffffd0454c:/examples/msg/io-storage/io-storage.c diff --git a/examples/msg/io-storage/io-storage.c b/examples/msg/io-storage/io-storage.c index ce10c42189..298e6e6501 100644 --- a/examples/msg/io-storage/io-storage.c +++ b/examples/msg/io-storage/io-storage.c @@ -1,28 +1,8 @@ -/* Copyright (c) 2006-2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2006-2016. 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. */ -/** @addtogroup MSG_examples - * - * - io/storage.c demo of all main storage and file functions - */ - -/********************* Files and Storage handling **************************** - * This example implements all main storage and file functions of the MSG API - * - * Scenario : - * - display information on the disks mounted by the current host - * - create a 200,000 bytes file - * - completely read the created file - * - write 100,000 bytes in the file - * - rename the created file - * - attach some user data to a disk - * - dump disk's contents - * -******************************************************************************/ - #include "simgrid/msg.h" XBT_LOG_NEW_DEFAULT_CATEGORY(storage,"Messages specific for this simulation"); @@ -30,7 +10,7 @@ XBT_LOG_NEW_DEFAULT_CATEGORY(storage,"Messages specific for this simulation"); static int host(int argc, char *argv[]){ const char* host_name = MSG_host_get_name(MSG_host_self()); - // display information on the disks mounted by the current host + /* - Display information on the disks mounted by the current host */ XBT_INFO("*** Storage info on %s ***", host_name); xbt_dict_cursor_t cursor = NULL; @@ -38,15 +18,15 @@ static int host(int argc, char *argv[]){ char* storage_name; msg_storage_t storage = NULL; - // Retrieve all mount points of current host + /* - Retrieve all mount points of current host */ xbt_dict_t storage_list = MSG_host_get_mounted_storage_list(MSG_host_self()); xbt_dict_foreach(storage_list,cursor,mount_name,storage_name) { - // For each disk mounted on host + /* - For each disk mounted on host: + - Retrieve disk's information */ XBT_INFO("Storage name: %s, mount name: %s", storage_name, mount_name); storage = MSG_storage_get_by_name(storage_name); - // Retrieve disk's information sg_size_t free_size = MSG_storage_get_free_size(storage); sg_size_t used_size = MSG_storage_get_used_size(storage); sg_size_t size = MSG_storage_get_size(storage); @@ -57,28 +37,26 @@ static int host(int argc, char *argv[]){ } xbt_dict_free(&storage_list); - // Create a 200,000 bytes file named './tmp/data.txt' on /sd1 + /* - Create a 200,000 bytes file named './tmp/data.txt' on /sd1 */ char* file_name = xbt_strdup("/home/tmp/data.txt"); - msg_file_t file = NULL; - sg_size_t write, read, file_size; - // Open an non-existing file amounts to create it! - file = MSG_file_open(file_name, NULL); - write = MSG_file_write(file, 200000); // Write 200,000 bytes + /* - Open an non-existing file which amounts to create it. */ + msg_file_t file = MSG_file_open(file_name, NULL); + sg_size_t write = MSG_file_write(file, 200000); // Write 200,000 bytes XBT_INFO("Create a %llu bytes file named '%s' on /sd1", write, file_name); MSG_file_dump(file); - // check that sizes have changed + /* - Check that sizes have changed */ XBT_INFO("Free size: %llu bytes", MSG_storage_get_free_size(storage)); XBT_INFO("Used size: %llu bytes", MSG_storage_get_used_size(storage)); - // Now retrieve the size of created file and read it completely - file_size = MSG_file_get_size(file); + /* - Retrieve the size of created file and read it completely */ + sg_size_t file_size = MSG_file_get_size(file); MSG_file_seek(file, 0, SEEK_SET); - read = MSG_file_read(file, file_size); + sg_size_t read = MSG_file_read(file, file_size); XBT_INFO("Read %llu bytes on %s", read, file_name); - // Now write 100,000 bytes in tmp/data.txt + /* - Then write 100,000 bytes in tmp/data.txt */ write = MSG_file_write(file, 100000); // Write 100,000 bytes XBT_INFO("Write %llu bytes on %s", write, file_name); MSG_file_dump(file); @@ -86,20 +64,21 @@ static int host(int argc, char *argv[]){ storage_name = xbt_strdup("Disk4"); storage = MSG_storage_get_by_name(storage_name); - // Now rename file from ./tmp/data.txt to ./tmp/simgrid.readme + /* - Move file from ./tmp/data.txt to ./tmp/simgrid.readme */ XBT_INFO("*** Move '/tmp/data.txt' into '/tmp/simgrid.readme'"); MSG_file_move(file, "/home/tmp/simgrid.readme"); - // Attach some user data to the file + /* - Attach some user data to the file */ MSG_file_set_data(file, xbt_strdup("777")); - // Retrieve these data + /* - Then retrieve this data */ char *data = MSG_file_get_data(file); XBT_INFO("User data attached to the file: %s", data); + xbt_free(data); MSG_file_close(file); free(file_name); - // Now attach some user data to disk1 + /* - Attach some user data to disk1 */ XBT_INFO("*** Get/set data for storage element: %s ***",storage_name); data = MSG_storage_get_data(storage); @@ -112,21 +91,21 @@ static int host(int argc, char *argv[]){ xbt_free(data); xbt_free(storage_name); - // Dump disks contents + /* - Finally dump disks contents */ XBT_INFO("*** Dump content of %s ***",MSG_host_get_name(MSG_host_self())); - xbt_dict_t contents = NULL; - contents = MSG_host_get_storage_content(MSG_host_self()); // contents is a dict of dicts - xbt_dict_cursor_t curs, curs2 = NULL; + xbt_dict_t contents = MSG_host_get_storage_content(MSG_host_self()); // contents is a dict of dicts + xbt_dict_cursor_t curs; + xbt_dict_cursor_t curs2 = NULL; char* mountname; xbt_dict_t content; char* path; - sg_size_t *size; + sg_size_t* psize; xbt_dict_foreach(contents, curs, mountname, content){ XBT_INFO("Print the content of mount point: %s",mountname); - xbt_dict_foreach(content,curs2,path,size){ - XBT_INFO("%s size: %llu bytes", path,*((sg_size_t*)size)); + xbt_dict_foreach (content, curs2, path, psize) { + XBT_INFO("%s size: %llu bytes", path, *psize); } - xbt_dict_free(&content); + xbt_dict_free(&content); } xbt_dict_free(&contents); return 1; @@ -138,7 +117,7 @@ int main(int argc, char *argv[]) MSG_create_environment(argv[1]); MSG_function_register("host", host); xbt_dynar_t hosts = MSG_hosts_as_dynar(); - MSG_process_create(NULL, host, NULL, xbt_dynar_get_as(hosts,0,msg_host_t) ); + MSG_process_create(NULL, host, NULL, xbt_dynar_get_as(hosts, 3, msg_host_t)); xbt_dynar_free(&hosts); msg_error_t res = MSG_main();