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 "instr/instr_interface.h"
8 #include "msg_private.h"
9 #include "msg_mailbox.h"
11 #include "xbt/sysdep.h"
13 #include "xbt/virtu.h"
14 #include "xbt/ex.h" /* ex_backtrace_display */
15 #include "xbt/replay.h"
16 #include "simgrid/sg_config.h" /* Configuration mechanism of SimGrid */
17 #include "src/surf/callbacks.h"
19 XBT_LOG_NEW_CATEGORY(msg, "All MSG categories");
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_kernel, msg,
21 "Logging specific to MSG (kernel)");
23 MSG_Global_t msg_global = NULL;
24 static void MSG_exit(void);
26 /********************************* MSG **************************************/
28 static void _sg_cfg_cb_msg_debug_multiple_use(const char *name, int pos)
30 msg_global->debug_multiple_use = xbt_cfg_get_boolean(_sg_cfg_set, name);
33 static void MSG_host_create_(sg_host_t host)
35 __MSG_host_create(host);
39 * \ingroup msg_simulation
40 * \brief Initialize MSG with less verifications
41 * You should use the MSG_init() function instead. Failing to do so may turn into PEBKAC some day. You've been warned.
43 void MSG_init_nocheck(int *argc, char **argv) {
45 TRACE_global_init(argc, argv);
47 xbt_getpid = MSG_process_self_PID;
50 msg_global = xbt_new0(s_MSG_Global_t, 1);
52 xbt_cfg_register(&_sg_cfg_set, "msg/debug_multiple_use",
53 "Print backtraces of both processes when there is a conflict of multiple use of a task",
54 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_msg_debug_multiple_use, NULL);
55 xbt_cfg_setdefault_boolean(_sg_cfg_set, "msg/debug_multiple_use", "no");
57 SIMIX_global_init(argc, argv);
59 #ifdef MSG_USE_DEPRECATED
60 msg_global->max_channel = 0;
62 msg_global->sent_msg = 0;
63 msg_global->task_copy_callback = NULL;
64 msg_global->process_data_cleanup = NULL;
66 SIMIX_function_register_process_create(MSG_process_create_from_SIMIX);
67 SIMIX_function_register_process_cleanup(MSG_process_cleanup_from_SIMIX);
69 sg_platf_postparse_add_cb(MSG_post_create_environment);
70 surf_host_created_callback(MSG_host_create_);
74 /* Ignore total amount of messages sent during the simulation for heap comparison */
75 MC_ignore_heap(&(msg_global->sent_msg), sizeof(msg_global->sent_msg));
78 XBT_DEBUG("ADD MSG LEVELS");
79 MSG_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, (void_f_pvoid_t) __MSG_storage_destroy);
80 MSG_FILE_LEVEL = xbt_lib_add_level(file_lib, (void_f_pvoid_t) __MSG_file_destroy);
81 if(sg_cfg_get_boolean("clean_atexit")) atexit(MSG_exit);
84 #ifdef MSG_USE_DEPRECATED
86 /* This deprecated function has to be called to fix the number of channel in the
87 simulation before creating any host. Indeed, each channel is
88 represented by a different mailbox on each #m_host_t. This
89 function can then be called only once. This function takes only one
91 * \param number the number of channel in the simulation. It has to be >0
93 msg_error_t MSG_set_channel_number(int number)
95 XBT_WARN("DEPRECATED! Please use aliases instead");
96 xbt_assert((msg_global)
97 && (msg_global->max_channel == 0),
98 "Channel number already set!");
100 msg_global->max_channel = number;
105 /* This deprecated function has to be called once the number of channel is fixed. I can't
106 figure out a reason why anyone would like to call this function but nevermind.
107 * \return the number of channel in the simulation.
109 int MSG_get_channel_number(void)
111 XBT_WARN("DEPRECATED! Please use aliases instead");
112 xbt_assert((msg_global)
113 && (msg_global->max_channel != 0),
114 "Channel number not set yet!");
116 return msg_global->max_channel;
120 /** \ingroup msg_simulation
121 * \brief Launch the MSG simulation
123 msg_error_t MSG_main(void)
125 /* Clean IO before the run */
129 if (MC_is_active()) {
137 /** \ingroup msg_simulation
138 * \brief set a configuration variable
140 * Do --help on any simgrid binary to see the list of currently existing configuration variables, and see Section @ref options.
143 * MSG_config("host/model","ptask_L07");
145 void MSG_config(const char *key, const char *value){
146 xbt_assert(msg_global,"ERROR: Please call MSG_init() before using MSG_config()");
147 xbt_cfg_set_as_string(_sg_cfg_set, key, value);
151 /** \ingroup msg_simulation
152 * \brief Kill all running process
154 * \param reset_PIDs should we reset the PID numbers. A negative
155 * number means no reset and a positive number will be used to set the PID
156 * of the next newly created process.
158 int MSG_process_killall(int reset_PIDs)
160 simcall_process_killall(reset_PIDs);
163 msg_global->session++;
169 static void MSG_exit(void) {
170 if (msg_global==NULL)
173 TRACE_surf_resource_utilization_release();
180 /** \ingroup msg_simulation
181 * \brief A clock (in second).
183 XBT_INLINE double MSG_get_clock(void)
185 return SIMIX_get_clock();
188 unsigned long int MSG_get_sent_msg()
190 return msg_global->sent_msg;
193 #ifdef MSG_USE_DEPRECATED
194 msg_error_t MSG_clean(void) {