1 /* Copyright (c) 2004-2014. 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 */
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);
34 * \ingroup msg_simulation
35 * \brief Initialize MSG with less verifications
36 * You should use the MSG_init() function instead. Failing to do so may turn into PEBKAC some day. You've been warned.
38 void MSG_init_nocheck(int *argc, char **argv) {
41 TRACE_global_init(argc, argv);
44 xbt_getpid = MSG_process_self_PID;
47 msg_global = xbt_new0(s_MSG_Global_t, 1);
49 xbt_cfg_register(&_sg_cfg_set, "msg/debug_multiple_use",
50 "Print backtraces of both processes when there is a conflict of multiple use of a task",
51 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_msg_debug_multiple_use, NULL);
52 xbt_cfg_setdefault_boolean(_sg_cfg_set, "msg/debug_multiple_use", "no");
54 SIMIX_global_init(argc, argv);
56 #ifdef MSG_USE_DEPRECATED
57 msg_global->max_channel = 0;
59 msg_global->sent_msg = 0;
60 msg_global->task_copy_callback = NULL;
61 msg_global->process_data_cleanup = NULL;
63 SIMIX_function_register_process_create(MSG_process_create_from_SIMIX);
64 SIMIX_function_register_process_cleanup(MSG_process_cleanup_from_SIMIX);
66 sg_platf_postparse_add_cb(MSG_post_create_environment);
70 /* Ignore total amount of messages sent during the simulation for heap comparison */
71 MC_ignore_heap(&(msg_global->sent_msg), sizeof(msg_global->sent_msg));
74 XBT_DEBUG("ADD MSG LEVELS");
75 MSG_HOST_LEVEL = xbt_lib_add_level(host_lib, (void_f_pvoid_t) __MSG_host_priv_free);
76 MSG_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, (void_f_pvoid_t) __MSG_storage_destroy);
77 MSG_FILE_LEVEL = xbt_lib_add_level(file_lib, (void_f_pvoid_t) __MSG_file_destroy);
78 if(sg_cfg_get_boolean("clean_atexit")) atexit(MSG_exit);
81 #ifdef MSG_USE_DEPRECATED
83 /* This deprecated function has to be called to fix the number of channel in the
84 simulation before creating any host. Indeed, each channel is
85 represented by a different mailbox on each #m_host_t. This
86 function can then be called only once. This function takes only one
88 * \param number the number of channel in the simulation. It has to be >0
90 msg_error_t MSG_set_channel_number(int number)
92 XBT_WARN("DEPRECATED! Please use aliases instead");
93 xbt_assert((msg_global)
94 && (msg_global->max_channel == 0),
95 "Channel number already set!");
97 msg_global->max_channel = number;
102 /* This deprecated function has to be called once the number of channel is fixed. I can't
103 figure out a reason why anyone would like to call this function but nevermind.
104 * \return the number of channel in the simulation.
106 int MSG_get_channel_number(void)
108 XBT_WARN("DEPRECATED! Please use aliases instead");
109 xbt_assert((msg_global)
110 && (msg_global->max_channel != 0),
111 "Channel number not set yet!");
113 return msg_global->max_channel;
117 /** \ingroup msg_simulation
118 * \brief Launch the MSG simulation
120 msg_error_t MSG_main(void)
122 /* Clean IO before the run */
126 if (MC_is_active()) {
127 MC_do_the_modelcheck_for_real();
134 /** \ingroup msg_simulation
135 * \brief set a configuration variable
137 * Do --help on any simgrid binary to see the list of currently existing configuration variables, and see Section @ref options.
140 * MSG_config("workstation/model","ptask_L07");
142 void MSG_config(const char *key, const char *value){
143 xbt_assert(msg_global,"ERROR: Please call MSG_init() before using MSG_config()");
144 xbt_cfg_set_as_string(_sg_cfg_set, key, value);
148 /** \ingroup msg_simulation
149 * \brief Kill all running process
151 * \param reset_PIDs should we reset the PID numbers. A negative
152 * number means no reset and a positive number will be used to set the PID
153 * of the next newly created process.
155 int MSG_process_killall(int reset_PIDs)
157 simcall_process_killall(reset_PIDs);
160 msg_global->session++;
166 static void MSG_exit(void) {
167 if (msg_global==NULL)
171 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) {