1 /* Copyright (c) 2004-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "simgrid/msg.h"
8 #include "instr/instr_interface.h"
9 #include "msg_private.h"
10 #include "msg_mailbox.h"
12 #include "xbt/sysdep.h"
14 #include "xbt/virtu.h"
15 #include "xbt/ex.h" /* ex_backtrace_display */
16 #include "xbt/replay.h"
17 #include "simgrid/sg_config.h" /* Configuration mechanism of SimGrid */
18 #include "src/surf/callbacks.h"
20 XBT_LOG_NEW_CATEGORY(msg, "All MSG categories");
21 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_kernel, msg,
22 "Logging specific to MSG (kernel)");
24 MSG_Global_t msg_global = NULL;
25 static void MSG_exit(void);
27 /********************************* MSG **************************************/
29 static void _sg_cfg_cb_msg_debug_multiple_use(const char *name, int pos)
31 msg_global->debug_multiple_use = xbt_cfg_get_boolean(_sg_cfg_set, name);
34 static void MSG_host_create_(sg_host_t host)
36 __MSG_host_create(host);
40 * \ingroup msg_simulation
41 * \brief Initialize MSG with less verifications
42 * You should use the MSG_init() function instead. Failing to do so may turn into PEBKAC some day. You've been warned.
44 void MSG_init_nocheck(int *argc, char **argv) {
46 TRACE_global_init(argc, argv);
48 xbt_getpid = MSG_process_self_PID;
51 msg_global = xbt_new0(s_MSG_Global_t, 1);
53 xbt_cfg_register(&_sg_cfg_set, "msg/debug_multiple_use",
54 "Print backtraces of both processes when there is a conflict of multiple use of a task",
55 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_msg_debug_multiple_use, NULL);
56 xbt_cfg_setdefault_boolean(_sg_cfg_set, "msg/debug_multiple_use", "no");
58 SIMIX_global_init(argc, argv);
60 #ifdef MSG_USE_DEPRECATED
61 msg_global->max_channel = 0;
63 msg_global->sent_msg = 0;
64 msg_global->task_copy_callback = NULL;
65 msg_global->process_data_cleanup = NULL;
67 SIMIX_function_register_process_create(MSG_process_create_from_SIMIX);
68 SIMIX_function_register_process_cleanup(MSG_process_cleanup_from_SIMIX);
70 sg_platf_postparse_add_cb(MSG_post_create_environment);
71 surf_on_host_created(MSG_host_create_);
75 /* Ignore total amount of messages sent during the simulation for heap comparison */
76 MC_ignore_heap(&(msg_global->sent_msg), sizeof(msg_global->sent_msg));
79 XBT_DEBUG("ADD MSG LEVELS");
80 MSG_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, (void_f_pvoid_t) __MSG_storage_destroy);
81 MSG_FILE_LEVEL = xbt_lib_add_level(file_lib, (void_f_pvoid_t) __MSG_file_destroy);
82 if(sg_cfg_get_boolean("clean_atexit")) atexit(MSG_exit);
85 #ifdef MSG_USE_DEPRECATED
87 /* This deprecated function has to be called to fix the number of channel in the
88 simulation before creating any host. Indeed, each channel is
89 represented by a different mailbox on each #m_host_t. This
90 function can then be called only once. This function takes only one
92 * \param number the number of channel in the simulation. It has to be >0
94 msg_error_t MSG_set_channel_number(int number)
96 XBT_WARN("DEPRECATED! Please use aliases instead");
97 xbt_assert((msg_global)
98 && (msg_global->max_channel == 0),
99 "Channel number already set!");
101 msg_global->max_channel = number;
106 /* This deprecated function has to be called once the number of channel is fixed. I can't
107 figure out a reason why anyone would like to call this function but nevermind.
108 * \return the number of channel in the simulation.
110 int MSG_get_channel_number(void)
112 XBT_WARN("DEPRECATED! Please use aliases instead");
113 xbt_assert((msg_global)
114 && (msg_global->max_channel != 0),
115 "Channel number not set yet!");
117 return msg_global->max_channel;
121 /** \ingroup msg_simulation
122 * \brief Launch the MSG simulation
124 msg_error_t MSG_main(void)
126 /* Clean IO before the run */
130 if (MC_is_active()) {
138 /** \ingroup msg_simulation
139 * \brief set a configuration variable
141 * Do --help on any simgrid binary to see the list of currently existing configuration variables, and see Section @ref options.
144 * MSG_config("host/model","ptask_L07");
146 void MSG_config(const char *key, const char *value){
147 xbt_assert(msg_global,"ERROR: Please call MSG_init() before using MSG_config()");
148 xbt_cfg_set_as_string(_sg_cfg_set, key, value);
152 /** \ingroup msg_simulation
153 * \brief Kill all running process
155 * \param reset_PIDs should we reset the PID numbers. A negative
156 * number means no reset and a positive number will be used to set the PID
157 * of the next newly created process.
159 int MSG_process_killall(int reset_PIDs)
161 simcall_process_killall(reset_PIDs);
164 msg_global->session++;
170 static void MSG_exit(void) {
171 if (msg_global==NULL)
174 TRACE_surf_resource_utilization_release();
181 /** \ingroup msg_simulation
182 * \brief A clock (in second).
184 double MSG_get_clock(void)
186 return SIMIX_get_clock();
189 unsigned long int MSG_get_sent_msg()
191 return msg_global->sent_msg;
194 #ifdef MSG_USE_DEPRECATED
195 msg_error_t MSG_clean(void) {