1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. 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 "msg_private.h"
8 #include "msg_mailbox.h"
10 #include "xbt/sysdep.h"
12 #include "xbt/virtu.h"
13 #include "xbt/ex.h" /* ex_backtrace_display */
14 #include "xbt/replay.h"
16 XBT_LOG_NEW_CATEGORY(msg, "All MSG categories");
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_kernel, msg,
18 "Logging specific to MSG (kernel)");
20 MSG_Global_t msg_global = NULL;
22 /********************************* MSG **************************************/
25 * \ingroup msg_simulation
26 * \brief Initialize MSG with less verifications
27 * You should use the MSG_init() function instead. Failing to do so may turn into PEBKAC some day. You've been warned.
29 void MSG_init_nocheck(int *argc, char **argv) {
32 TRACE_global_init(argc, argv);
35 xbt_getpid = MSG_process_self_PID;
37 s_msg_vm_t vm; // to compute the offset
39 SIMIX_global_init(argc, argv);
41 msg_global = xbt_new0(s_MSG_Global_t, 1);
43 #ifdef MSG_USE_DEPRECATED
44 msg_global->max_channel = 0;
47 msg_global->sent_msg = 0;
48 msg_global->task_copy_callback = NULL;
49 msg_global->process_data_cleanup = NULL;
50 msg_global->vms = xbt_swag_new(xbt_swag_offset(vm,all_vms_hookup));
53 /* Ignore total amount of messages sent during the simulation for heap comparison */
54 MC_ignore(&(msg_global->sent_msg), sizeof(msg_global->sent_msg));
57 /* initialization of the action module */
60 SIMIX_function_register_process_create(MSG_process_create_from_SIMIX);
61 SIMIX_function_register_process_cleanup(MSG_process_cleanup_from_SIMIX);
63 sg_platf_postparse_add_cb(MSG_post_create_environment);
69 XBT_DEBUG("ADD MSG LEVELS");
70 MSG_HOST_LEVEL = xbt_lib_add_level(host_lib, (void_f_pvoid_t) __MSG_host_destroy);
73 #ifdef MSG_USE_DEPRECATED
75 /* This deprecated function has to be called to fix the number of channel in the
76 simulation before creating any host. Indeed, each channel is
77 represented by a different mailbox on each #m_host_t. This
78 function can then be called only once. This function takes only one
80 * \param number the number of channel in the simulation. It has to be >0
82 msg_error_t MSG_set_channel_number(int number)
84 XBT_WARN("DEPRECATED! Please use aliases instead");
85 xbt_assert((msg_global)
86 && (msg_global->max_channel == 0),
87 "Channel number already set!");
89 msg_global->max_channel = number;
94 /* This deprecated function has to be called once the number of channel is fixed. I can't
95 figure out a reason why anyone would like to call this function but nevermind.
96 * \return the number of channel in the simulation.
98 int MSG_get_channel_number(void)
100 XBT_WARN("DEPRECATED! Please use aliases instead");
101 xbt_assert((msg_global)
102 && (msg_global->max_channel != 0),
103 "Channel number not set yet!");
105 return msg_global->max_channel;
109 /** \ingroup msg_simulation
110 * \brief Launch the MSG simulation
112 msg_error_t MSG_main(void)
114 /* Clean IO before the run */
119 MC_do_the_modelcheck_for_real();
126 /** \ingroup msg_simulation
127 * \brief Kill all running process
129 * \param reset_PIDs should we reset the PID numbers. A negative
130 * number means no reset and a positive number will be used to set the PID
131 * of the next newly created process.
133 int MSG_process_killall(int reset_PIDs)
135 simcall_process_killall();
137 if (reset_PIDs > 0) {
138 msg_global->PID = reset_PIDs;
139 msg_global->session++;
142 return msg_global->PID;
146 /** \ingroup msg_simulation
147 * \brief Clean the MSG simulation
149 msg_error_t MSG_clean(void)
151 XBT_DEBUG("Closing MSG");
154 TRACE_surf_release();
157 MSG_process_killall(0);
159 /* initialization of the action module */
168 xbt_swag_free(msg_global->vms);
176 /** \ingroup msg_simulation
177 * \brief A clock (in second).
179 XBT_INLINE double MSG_get_clock(void)
181 return SIMIX_get_clock();
184 unsigned long int MSG_get_sent_msg()
186 return msg_global->sent_msg;