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 if(MC_IS_ENABLED && mmalloc_ignore == NULL)
44 msg_global = xbt_new0(s_MSG_Global_t, 1);
46 #ifdef MSG_USE_DEPRECATED
47 msg_global->max_channel = 0;
50 msg_global->sent_msg = 0;
51 msg_global->task_copy_callback = NULL;
52 msg_global->process_data_cleanup = NULL;
53 msg_global->vms = xbt_swag_new(xbt_swag_offset(vm,all_vms_hookup));
55 /* initialization of the action module */
58 SIMIX_function_register_process_create(MSG_process_create_from_SIMIX);
59 SIMIX_function_register_process_cleanup(MSG_process_cleanup_from_SIMIX);
61 sg_platf_postparse_add_cb(MSG_post_create_environment);
65 /* Ignore total amount of messages sent during the simulation for heap comparison */
66 MC_ignore(&(msg_global->sent_msg), sizeof(msg_global->sent_msg));
73 XBT_DEBUG("ADD MSG LEVELS");
74 MSG_HOST_LEVEL = xbt_lib_add_level(host_lib, (void_f_pvoid_t) __MSG_host_destroy);
77 #ifdef MSG_USE_DEPRECATED
79 /* This deprecated function has to be called to fix the number of channel in the
80 simulation before creating any host. Indeed, each channel is
81 represented by a different mailbox on each #m_host_t. This
82 function can then be called only once. This function takes only one
84 * \param number the number of channel in the simulation. It has to be >0
86 msg_error_t MSG_set_channel_number(int number)
88 XBT_WARN("DEPRECATED! Please use aliases instead");
89 xbt_assert((msg_global)
90 && (msg_global->max_channel == 0),
91 "Channel number already set!");
93 msg_global->max_channel = number;
98 /* This deprecated function has to be called once the number of channel is fixed. I can't
99 figure out a reason why anyone would like to call this function but nevermind.
100 * \return the number of channel in the simulation.
102 int MSG_get_channel_number(void)
104 XBT_WARN("DEPRECATED! Please use aliases instead");
105 xbt_assert((msg_global)
106 && (msg_global->max_channel != 0),
107 "Channel number not set yet!");
109 return msg_global->max_channel;
113 /** \ingroup msg_simulation
114 * \brief Launch the MSG simulation
116 msg_error_t MSG_main(void)
118 /* Clean IO before the run */
123 MC_do_the_modelcheck_for_real();
130 /** \ingroup msg_simulation
131 * \brief Kill all running process
133 * \param reset_PIDs should we reset the PID numbers. A negative
134 * number means no reset and a positive number will be used to set the PID
135 * of the next newly created process.
137 int MSG_process_killall(int reset_PIDs)
139 simcall_process_killall();
141 if (reset_PIDs > 0) {
142 msg_global->PID = reset_PIDs;
143 msg_global->session++;
146 return msg_global->PID;
150 /** \ingroup msg_simulation
151 * \brief Clean the MSG simulation
153 msg_error_t MSG_clean(void)
155 XBT_DEBUG("Closing MSG");
158 TRACE_surf_release();
161 MSG_process_killall(0);
163 /* initialization of the action module */
172 xbt_swag_free(msg_global->vms);
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;