1 /* Copyright (c) 2004-2017. 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 #include "simgrid/s4u/Engine.hpp"
7 #include "simgrid/s4u/Host.hpp"
9 #include "instr/instr_interface.h"
11 #include "src/msg/msg_private.h"
13 XBT_LOG_NEW_CATEGORY(msg, "All MSG categories");
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_kernel, msg, "Logging specific to MSG (kernel)");
18 MSG_Global_t msg_global = nullptr;
19 static void MSG_exit();
21 /********************************* MSG **************************************/
23 static void _sg_cfg_cb_msg_debug_multiple_use(const char *name)
25 msg_global->debug_multiple_use = xbt_cfg_get_boolean(name);
29 * \ingroup msg_simulation
30 * \brief Initialize MSG with less verifications
31 * You should use the MSG_init() function instead. Failing to do so may turn into PEBKAC some day. You've been warned.
33 void MSG_init_nocheck(int *argc, char **argv) {
35 TRACE_global_init(argc, argv);
37 xbt_getpid = &MSG_process_self_PID;
40 msg_global = new s_MSG_Global_t();
42 xbt_cfg_register_boolean("msg/debug-multiple-use", "no", _sg_cfg_cb_msg_debug_multiple_use,
43 "Print backtraces of both processes when there is a conflict of multiple use of a task");
45 SIMIX_global_init(argc, argv);
47 msg_global->sent_msg = 0;
48 msg_global->task_copy_callback = nullptr;
49 msg_global->process_data_cleanup = nullptr;
51 SIMIX_function_register_process_create(MSG_process_create_from_SIMIX);
52 SIMIX_function_register_process_cleanup(MSG_process_cleanup_from_SIMIX);
54 simgrid::MsgHostExt::EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::MsgHostExt>();
55 simgrid::s4u::Host::onCreation.connect([](simgrid::s4u::Host& host) {
56 host.extension_set<simgrid::MsgHostExt>(new simgrid::MsgHostExt());
61 /* Ignore total amount of messages sent during the simulation for heap comparison */
62 MC_ignore_heap(&(msg_global->sent_msg), sizeof(msg_global->sent_msg));
65 if (xbt_cfg_get_boolean("clean-atexit"))
69 /** \ingroup msg_simulation
70 * \brief Launch the MSG simulation
72 msg_error_t MSG_main()
74 /* Clean IO before the run */
86 /** \ingroup msg_simulation
87 * \brief set a configuration variable
89 * Do --help on any simgrid binary to see the list of currently existing configuration variables, and see Section @ref options.
92 * MSG_config("host/model","ptask_L07");
94 void MSG_config(const char *key, const char *value){
95 xbt_assert(msg_global,"ERROR: Please call MSG_init() before using MSG_config()");
96 xbt_cfg_set_as_string(key, value);
99 /** \ingroup msg_simulation
100 * \brief Kill all running process
102 * \param reset_PIDs should we reset the PID numbers. A negative
103 * number means no reset and a positive number will be used to set the PID
104 * of the next newly created process.
106 int MSG_process_killall(int reset_PIDs)
108 simcall_process_killall(reset_PIDs);
113 static void MSG_exit() {
114 if (msg_global==nullptr)
117 TRACE_surf_resource_utilization_release();
120 msg_global = nullptr;
123 /** \ingroup msg_simulation
124 * \brief A clock (in second).
126 double MSG_get_clock()
128 return SIMIX_get_clock();
131 unsigned long int MSG_get_sent_msg()
133 return msg_global->sent_msg;