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 "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"
17 XBT_LOG_NEW_CATEGORY(msg, "All MSG categories");
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_kernel, msg,
19 "Logging specific to MSG (kernel)");
21 MSG_Global_t msg_global = NULL;
22 static void MSG_exit(void);
24 /********************************* MSG **************************************/
27 * \ingroup msg_simulation
28 * \brief Initialize MSG with less verifications
29 * You should use the MSG_init() function instead. Failing to do so may turn into PEBKAC some day. You've been warned.
31 void MSG_init_nocheck(int *argc, char **argv) {
34 TRACE_global_init(argc, argv);
37 xbt_getpid = MSG_process_self_PID;
39 s_msg_vm_t vm; // to compute the offset
41 SIMIX_global_init(argc, argv);
43 msg_global = xbt_new0(s_MSG_Global_t, 1);
45 #ifdef MSG_USE_DEPRECATED
46 msg_global->max_channel = 0;
49 msg_global->sent_msg = 0;
50 msg_global->task_copy_callback = NULL;
51 msg_global->process_data_cleanup = NULL;
52 msg_global->vms = xbt_swag_new(xbt_swag_offset(vm,all_vms_hookup));
54 /* initialization of the action module */
57 SIMIX_function_register_process_create(MSG_process_create_from_SIMIX);
58 SIMIX_function_register_process_cleanup(MSG_process_cleanup_from_SIMIX);
60 sg_platf_postparse_add_cb(MSG_post_create_environment);
64 /* Ignore total amount of messages sent during the simulation for heap comparison */
65 MC_ignore_heap(&(msg_global->sent_msg), sizeof(msg_global->sent_msg));
72 XBT_DEBUG("ADD MSG LEVELS");
73 MSG_HOST_LEVEL = xbt_lib_add_level(host_lib, (void_f_pvoid_t) __MSG_host_destroy);
78 #ifdef MSG_USE_DEPRECATED
80 /* This deprecated function has to be called to fix the number of channel in the
81 simulation before creating any host. Indeed, each channel is
82 represented by a different mailbox on each #m_host_t. This
83 function can then be called only once. This function takes only one
85 * \param number the number of channel in the simulation. It has to be >0
87 msg_error_t MSG_set_channel_number(int number)
89 XBT_WARN("DEPRECATED! Please use aliases instead");
90 xbt_assert((msg_global)
91 && (msg_global->max_channel == 0),
92 "Channel number already set!");
94 msg_global->max_channel = number;
99 /* This deprecated function has to be called once the number of channel is fixed. I can't
100 figure out a reason why anyone would like to call this function but nevermind.
101 * \return the number of channel in the simulation.
103 int MSG_get_channel_number(void)
105 XBT_WARN("DEPRECATED! Please use aliases instead");
106 xbt_assert((msg_global)
107 && (msg_global->max_channel != 0),
108 "Channel number not set yet!");
110 return msg_global->max_channel;
114 /** \ingroup msg_simulation
115 * \brief Launch the MSG simulation
117 msg_error_t MSG_main(void)
119 /* Clean IO before the run */
123 if (MC_is_active()) {
124 MC_do_the_modelcheck_for_real();
131 /** \ingroup msg_simulation
132 * \brief Kill all running process
134 * \param reset_PIDs should we reset the PID numbers. A negative
135 * number means no reset and a positive number will be used to set the PID
136 * of the next newly created process.
138 int MSG_process_killall(int reset_PIDs)
140 simcall_process_killall();
142 if (reset_PIDs > 0) {
143 msg_global->PID = reset_PIDs;
144 msg_global->session++;
147 return msg_global->PID;
151 static void MSG_exit(void) {
152 if (msg_global==NULL)
156 TRACE_surf_resource_utilization_release();
159 /* initialization of the action module */
166 xbt_swag_free(msg_global->vms);
172 /** \ingroup msg_simulation
173 * \brief A clock (in second).
175 XBT_INLINE double MSG_get_clock(void)
177 return SIMIX_get_clock();
180 unsigned long int MSG_get_sent_msg()
182 return msg_global->sent_msg;
185 #ifdef MSG_USE_DEPRECATED
186 msg_error_t MSG_clean(void) {