1 /* Copyright (c) 2004-2023. 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. */
9 #include <simgrid/actor.h>
10 #include <simgrid/barrier.h>
11 #include <simgrid/engine.h>
12 #include <simgrid/forward.h>
13 #include <simgrid/host.h>
14 #include <simgrid/instr.h>
15 #include <simgrid/mailbox.h>
16 #include <simgrid/mutex.h>
17 #include <simgrid/plugins/live_migration.h>
18 #include <simgrid/semaphore.h>
19 #include <simgrid/version.h>
20 #include <simgrid/vm.h>
21 #include <simgrid/zone.h>
25 #define MIN(a, b) ((a) < (b) ? (a) : (b))
28 #define MAX(a, b) ((a) > (b) ? (a) : (b))
38 using sg_msg_Comm = simgrid::msg::Comm;
39 using sg_msg_Task = simgrid::msg::Task;
41 typedef struct msg_Comm sg_msg_Comm;
42 typedef struct msg_Task sg_msg_Task;
49 /** @brief Return code of most MSG functions */
51 MSG_OK = 0, /**< @brief Everything is right. Keep on going this way ! */
52 MSG_TIMEOUT = 1, /**< @brief nothing good happened before the timer you provided elapsed */
53 MSG_TRANSFER_FAILURE = 2, /**< @brief There has been a problem during you task
54 transfer. Either the network is down or the remote host has been
56 MSG_HOST_FAILURE = 4, /**< @brief System shutdown. The host on which you are
57 running has just been rebooted. Free your datastructures and
59 MSG_TASK_CANCELED = 8 /**< @brief Canceled task. This task has been canceled by somebody!*/
62 /* *************************** Network Zones ******************************** */
63 typedef sg_netzone_t msg_netzone_t;
65 XBT_PUBLIC msg_netzone_t MSG_zone_get_root();
66 XBT_PUBLIC const char* MSG_zone_get_name(const_sg_netzone_t zone);
67 XBT_PUBLIC msg_netzone_t MSG_zone_get_by_name(const char* name);
68 XBT_PUBLIC void MSG_zone_get_sons(const_sg_netzone_t zone, xbt_dict_t whereto);
69 XBT_PUBLIC const char* MSG_zone_get_property_value(const_sg_netzone_t zone, const char* name);
70 XBT_PUBLIC void MSG_zone_set_property_value(msg_netzone_t zone, const char* name, const char* value);
71 XBT_PUBLIC void MSG_zone_get_hosts(const_sg_netzone_t zone, xbt_dynar_t whereto);
73 /* ******************************** Hosts ************************************ */
74 /** @brief Host datatype.
76 * A <em>location</em> (or <em>host</em>) is any possible place where a process may run. Thus it is represented as a
77 * <em>physical resource with computing capabilities</em>, some <em>mailboxes</em> to enable running process to
78 * communicate with remote ones, and some <em>private data</em> that can be only accessed by local process.
80 typedef sg_host_t msg_host_t;
82 /** @brief Finds a msg_host_t using its name. */
83 XBT_PUBLIC sg_host_t MSG_get_host_by_name(const char* name);
84 /** @brief Finds a msg_host_t using its name. */
85 XBT_PUBLIC sg_host_t MSG_host_by_name(const char* name);
87 /** @brief Returns the amount of host found in the platform */
88 XBT_PUBLIC size_t MSG_get_host_number();
90 /** @brief Returns the name of this host */
91 XBT_PUBLIC const char* MSG_host_get_name(const_sg_host_t host);
92 /** @brief Returns the user data of this host */
93 XBT_PUBLIC void* MSG_host_get_data(const_sg_host_t host);
94 /** @brief Sets the user data of this host */
95 XBT_PUBLIC void MSG_host_set_data(sg_host_t host, void* data);
97 XBT_PUBLIC double MSG_host_get_speed(const_sg_host_t host);
98 XBT_PUBLIC double MSG_host_get_power_peak_at(const_sg_host_t host, int pstate_index);
99 XBT_PUBLIC int MSG_host_get_core_number(const_sg_host_t host);
100 XBT_PUBLIC int MSG_host_get_nb_pstates(const_sg_host_t host);
101 XBT_PUBLIC int MSG_host_get_pstate(const_sg_host_t host);
102 XBT_PUBLIC void MSG_host_set_pstate(sg_host_t host, int pstate);
103 /** @brief Start the host if it is off
106 * See also :cpp:func:`MSG_host_is_on()` to test the current state of the host, and :ref:`plugin_host_energy`
107 * for more info on DVFS.
110 XBT_PUBLIC void MSG_host_on(sg_host_t h);
111 /** @brief Stop the host if it is on
114 * See also :cpp:func:`MSG_host_is_on()` to test the current state of the host, and :ref:`plugin_host_energy`
115 * for more info on DVFS.
118 XBT_PUBLIC void MSG_host_off(sg_host_t h);
119 XBT_PUBLIC int MSG_host_is_on(const_sg_host_t h);
120 XBT_PUBLIC xbt_dict_t MSG_host_get_properties(const_sg_host_t host);
121 XBT_PUBLIC const char* MSG_host_get_property_value(const_sg_host_t host, const char* name);
122 XBT_PUBLIC void MSG_host_set_property_value(sg_host_t host, const char* name, const char* value);
123 XBT_PUBLIC void MSG_host_get_process_list(const_sg_host_t host, xbt_dynar_t whereto);
125 /** @brief Return the location on which the current process is executed */
126 XBT_PUBLIC sg_host_t MSG_host_self();
127 XBT_PUBLIC double MSG_host_get_load(const_sg_host_t host);
129 /* ******************************** VMs ************************************* */
130 typedef sg_vm_t msg_vm_t;
132 XBT_PUBLIC msg_vm_t MSG_vm_create_core(msg_host_t pm, const char* name);
133 XBT_PUBLIC msg_vm_t MSG_vm_create_multicore(msg_host_t pm, const char* name, int coreAmount);
135 XBT_PUBLIC int MSG_vm_is_created(const_sg_vm_t vm);
136 XBT_PUBLIC int MSG_vm_is_running(const_sg_vm_t vm);
137 XBT_PUBLIC int MSG_vm_is_suspended(const_sg_vm_t vm);
139 XBT_PUBLIC const char* MSG_vm_get_name(const_sg_vm_t vm);
140 XBT_PUBLIC void MSG_vm_set_ramsize(msg_vm_t vm, size_t size);
141 XBT_PUBLIC size_t MSG_vm_get_ramsize(const_sg_vm_t vm);
142 XBT_PUBLIC msg_host_t MSG_vm_get_pm(const_sg_vm_t vm);
143 XBT_PUBLIC void MSG_vm_set_bound(msg_vm_t vm, double bound);
145 XBT_PUBLIC void MSG_vm_start(msg_vm_t vm);
146 XBT_PUBLIC void MSG_vm_suspend(msg_vm_t vm);
147 XBT_PUBLIC void MSG_vm_resume(msg_vm_t vm);
148 XBT_PUBLIC void MSG_vm_shutdown(msg_vm_t vm);
149 XBT_PUBLIC void MSG_vm_destroy(msg_vm_t vm);
151 /* ******************************** Actor/process *************************** */
152 /** Processes are independent agents that can do stuff on their own.
153 * They are in charge of executing your code interacting with the simulated world.
154 * A process may be defined as a <em>code</em> with some <em>private data</em>.
155 * Processes must be located on <em>hosts</em> (#msg_host_t), and they exchange data by sending tasks (#msg_task_t)
156 * that are similar to envelops containing data.
160 typedef sg_actor_t msg_process_t;
162 XBT_PUBLIC int MSG_process_get_PID(const_sg_actor_t process);
163 XBT_PUBLIC int MSG_process_get_PPID(const_sg_actor_t process);
164 /** @brief Return a process from its PID (or NULL if not found).
166 * Note that the PID are unique in the whole simulation, not only on a given host.
168 XBT_PUBLIC sg_actor_t MSG_process_from_PID(int pid);
169 XBT_PUBLIC const char* MSG_process_get_name(const_sg_actor_t process);
170 XBT_PUBLIC sg_host_t MSG_process_get_host(const_sg_actor_t process);
172 /*property handlers*/
173 XBT_PUBLIC xbt_dict_t MSG_process_get_properties(const_sg_actor_t process);
174 XBT_PUBLIC const char* MSG_process_get_property_value(const_sg_actor_t process, const char* name);
176 XBT_PUBLIC void MSG_process_suspend(msg_process_t process);
177 XBT_PUBLIC void MSG_process_resume(msg_process_t process);
178 XBT_PUBLIC int MSG_process_is_suspended(const_sg_actor_t process);
179 XBT_PUBLIC void MSG_process_restart(msg_process_t process);
180 /** @brief Sets the "auto-restart" flag of the process.
182 * If the flag is set, the process will be automatically restarted when its host comes back up.
184 XBT_PUBLIC void MSG_process_auto_restart_set(msg_process_t process, int auto_restart);
185 /** @brief Indicates that this process should not prevent the simulation from ending
187 * SimGrid simulations run until all non-daemon processes are stopped.
189 XBT_PUBLIC void MSG_process_daemonize(msg_process_t process);
190 /** @brief Immediately changes the host on which this process runs */
191 XBT_PUBLIC void MSG_process_migrate(msg_process_t process, msg_host_t host);
192 /** @brief Wait for the completion of a process.
194 * @param process the process to wait for
195 * @param timeout wait until the process is over, or the timeout occurs
197 XBT_PUBLIC void MSG_process_join(const_sg_actor_t process, double timeout);
198 /** @brief Kills a process */
199 XBT_PUBLIC void MSG_process_kill(msg_process_t process);
200 /** @brief Kill all running process */
201 XBT_PUBLIC void MSG_process_killall();
202 /** @brief Specifies the time at which the process should be automatically killed */
203 XBT_PUBLIC void MSG_process_set_kill_time(msg_process_t process, double kill_time);
204 /** @brief Yield the current actor; let the other actors execute first */
205 XBT_PUBLIC void MSG_process_yield();
206 /*** @brief Sleep for the specified number of seconds */
207 XBT_PUBLIC msg_error_t MSG_process_sleep(double nb_sec);
208 XBT_PUBLIC msg_process_t MSG_process_self();
209 XBT_PUBLIC aid_t MSG_process_self_PID();
210 XBT_PUBLIC aid_t MSG_process_self_PPID();
211 XBT_PUBLIC const char* MSG_process_self_name();
212 XBT_PUBLIC void MSG_process_ref(const_sg_actor_t process);
213 XBT_PUBLIC void MSG_process_unref(const_sg_actor_t process);
215 /** @brief Object representing an ongoing communication between processes.
218 * Such beast is usually obtained by using :cpp:func:`MSG_task_isend`, :cpp:func:`MSG_task_irecv` or friends.
221 typedef sg_msg_Comm* msg_comm_t;
222 typedef const sg_msg_Comm* const_msg_comm_t;
224 /** @brief Task datatype.
226 * Since most scheduling algorithms rely on a concept of task that can be either <em>computed</em> locally or
227 * <em>transferred</em> on another processor, it seems to be the right level of abstraction for our purposes.
228 * A <em>task</em> may then be defined by a <em>computing amount</em>, a <em>message size</em> and
229 * some <em>private data</em>.
231 typedef sg_msg_Task* msg_task_t;
232 typedef const sg_msg_Task* const_msg_task_t;
234 /* ******************************** Task ************************************ */
237 /** @brief Default value for an uninitialized #msg_task_t. */
238 #define MSG_TASK_UNINITIALIZED NULL
240 /************************** Global ******************************************/
241 /** @brief set a configuration variable
244 * Do --help on any simgrid binary to see the list of currently existing configuration variables, and see Section
249 * MSG_config("host/model","ptask_L07");
251 XBT_PUBLIC void MSG_config(const char* key, const char* value);
252 /** @brief Initialize the MSG internal data.
255 * It also checks that the link-time and compile-time versions of SimGrid do
256 * match, so you should use this version instead of the #MSG_init_nocheck
257 * function that does the same initializations, but without this check.
259 * We allow linking against compiled versions that differ in the patch level.
261 #define MSG_init(argc, argv) \
263 sg_version_check(SIMGRID_VERSION_MAJOR, SIMGRID_VERSION_MINOR, SIMGRID_VERSION_PATCH); \
264 MSG_init_nocheck((argc), (argv)); \
267 XBT_PUBLIC void MSG_init_nocheck(int* argc, char** argv);
268 /** @brief Launch the MSG simulation */
269 XBT_PUBLIC msg_error_t MSG_main();
270 /** @brief Registers the main function of a process in a global table.
272 * This table is then used by #MSG_launch_application.
273 * @param name the reference name of the function.
274 * @param code the function (must have the same prototype than the main function of any C program: int ..(int argc, char
277 XBT_PUBLIC void MSG_function_register(const char* name, int (*code)(int, char**));
278 /** @brief Registers a code function as being the default value.
280 * This function will get used by MSG_launch_application() when there is no registered function of the requested name
283 * @param code the function (must have the same prototype than the main function of any C program: int ..(int argc, char
286 XBT_PUBLIC void MSG_function_register_default(int (*code)(int, char**));
287 /** @brief Creates a new platform, including hosts, links and the routing_table */
288 XBT_PUBLIC void MSG_create_environment(const char* file);
289 /** @brief Creates the application described in the provided file */
290 XBT_PUBLIC void MSG_launch_application(const char* file);
292 /** @brief A clock (in second). */
293 XBT_PUBLIC double MSG_get_clock();
294 /** @brief Returns the amount of messages sent since the simulation start */
295 XBT_PUBLIC unsigned long int MSG_get_sent_msg();
297 /************************** Process handling *********************************/
298 XBT_PUBLIC msg_process_t MSG_process_create(const char* name, int (*code)(int, char**), void* data, msg_host_t host);
299 XBT_PUBLIC msg_process_t MSG_process_create_with_arguments(const char* name, int (*code)(int, char**), void* data,
300 msg_host_t host, int argc, char** argv);
301 XBT_PUBLIC msg_process_t MSG_process_create_with_environment(const char* name, int (*code)(int, char**), void* data,
302 msg_host_t host, int argc, char** argv,
303 xbt_dict_t properties);
305 XBT_PUBLIC msg_process_t MSG_process_attach(const char* name, void* data, msg_host_t host, xbt_dict_t properties);
306 XBT_PUBLIC void MSG_process_detach();
308 XBT_PUBLIC void MSG_process_set_data_cleanup(void_f_pvoid_t data_cleanup);
310 XBT_PUBLIC void* MSG_process_get_data(const_sg_actor_t process);
311 XBT_PUBLIC msg_error_t MSG_process_set_data(msg_process_t process, void* data);
313 XBT_PUBLIC void MSG_process_on_exit(int_f_int_pvoid_t fun, void* data);
315 /************************** Task handling ************************************/
316 XBT_PUBLIC msg_task_t MSG_task_create(const char* name, double flops_amount, double bytes_amount, void* data);
317 XBT_PUBLIC msg_task_t MSG_parallel_task_create(const char* name, int host_nb, const msg_host_t* host_list,
318 double* flops_amount, double* bytes_amount, void* data);
319 XBT_PUBLIC void* MSG_task_get_data(const_msg_task_t task);
320 XBT_PUBLIC void MSG_task_set_data(msg_task_t task, void* data);
321 XBT_PUBLIC msg_process_t MSG_task_get_sender(const_msg_task_t task);
322 XBT_PUBLIC msg_host_t MSG_task_get_source(const_msg_task_t task);
323 XBT_PUBLIC const char* MSG_task_get_name(const_msg_task_t task);
324 XBT_PUBLIC void MSG_task_set_name(msg_task_t task, const char* name);
325 XBT_PUBLIC msg_error_t MSG_task_cancel(msg_task_t task);
326 XBT_PUBLIC msg_error_t MSG_task_destroy(msg_task_t task);
328 XBT_PUBLIC msg_error_t MSG_task_execute(msg_task_t task);
329 XBT_PUBLIC msg_error_t MSG_parallel_task_execute(msg_task_t task);
330 XBT_PUBLIC msg_error_t MSG_parallel_task_execute_with_timeout(msg_task_t task, double timeout);
331 XBT_PUBLIC void MSG_task_set_priority(msg_task_t task, double priority);
332 XBT_PUBLIC void MSG_task_set_bound(msg_task_t task, double bound);
334 XBT_PUBLIC void MSG_task_set_flops_amount(msg_task_t task, double flops_amount);
335 XBT_PUBLIC double MSG_task_get_flops_amount(const_msg_task_t task);
336 XBT_PUBLIC double MSG_task_get_remaining_work_ratio(const_msg_task_t task);
337 XBT_PUBLIC void MSG_task_set_bytes_amount(msg_task_t task, double bytes_amount);
339 XBT_PUBLIC double MSG_task_get_remaining_communication(const_msg_task_t task);
340 XBT_PUBLIC double MSG_task_get_bytes_amount(const_msg_task_t task);
342 XBT_PUBLIC msg_error_t MSG_task_receive_with_timeout(msg_task_t* task, const char* alias, double timeout);
344 XBT_PUBLIC msg_error_t MSG_task_receive(msg_task_t* task, const char* alias);
345 #define MSG_task_recv(t, a) MSG_task_receive((t), (a))
347 XBT_PUBLIC msg_error_t MSG_task_receive_with_timeout_bounded(msg_task_t* task, const char* alias, double timeout,
349 XBT_PUBLIC msg_error_t MSG_task_receive_bounded(msg_task_t* task, const char* alias, double rate);
350 #define MSG_task_recv_bounded(t, a, r) MSG_task_receive_bounded((t), (a), (r))
352 XBT_PUBLIC msg_comm_t MSG_task_isend(msg_task_t task, const char* alias);
353 XBT_PUBLIC msg_comm_t MSG_task_isend_bounded(msg_task_t task, const char* alias, double maxrate);
355 XBT_PUBLIC void MSG_task_dsend(msg_task_t task, const char* alias, void_f_pvoid_t cleanup);
356 XBT_PUBLIC void MSG_task_dsend_bounded(msg_task_t task, const char* alias, void_f_pvoid_t cleanup, double maxrate);
357 XBT_PUBLIC msg_comm_t MSG_task_irecv(msg_task_t* task, const char* alias);
358 XBT_PUBLIC msg_comm_t MSG_task_irecv_bounded(msg_task_t* task, const char* alias, double rate);
359 XBT_PUBLIC int MSG_comm_test(msg_comm_t comm);
360 XBT_PUBLIC int MSG_comm_testany(const_xbt_dynar_t comms);
361 XBT_PUBLIC void MSG_comm_destroy(const_msg_comm_t comm);
362 XBT_PUBLIC msg_error_t MSG_comm_wait(msg_comm_t comm, double timeout);
363 XBT_PUBLIC void MSG_comm_waitall(msg_comm_t* comm, int nb_elem, double timeout);
364 XBT_PUBLIC int MSG_comm_waitany(const_xbt_dynar_t comms);
365 XBT_PUBLIC msg_task_t MSG_comm_get_task(const_msg_comm_t comm);
366 XBT_PUBLIC msg_error_t MSG_comm_get_status(const_msg_comm_t comm);
368 /** @brief Check if there is a communication going on in a mailbox.
370 * @param alias the name of the mailbox to be considered
372 * @return Returns 1 if there is a communication, 0 otherwise
374 XBT_PUBLIC int MSG_task_listen(const char* alias);
375 XBT_PUBLIC msg_error_t MSG_task_send_with_timeout(msg_task_t task, const char* alias, double timeout);
376 XBT_PUBLIC msg_error_t MSG_task_send_with_timeout_bounded(msg_task_t task, const char* alias, double timeout,
378 XBT_PUBLIC msg_error_t MSG_task_send(msg_task_t task, const char* alias);
379 XBT_PUBLIC msg_error_t MSG_task_send_bounded(msg_task_t task, const char* alias, double rate);
380 XBT_PUBLIC int MSG_task_listen_from(const char* alias);
381 XBT_PUBLIC void MSG_task_set_category(msg_task_t task, const char* category);
382 XBT_PUBLIC const char* MSG_task_get_category(const_msg_task_t task);
384 /************************** Mailbox handling ************************************/
386 /* @brief set a mailbox in eager mode.
387 * All messages sent to this mailbox will be transferred to the receiver without waiting for the receive call.
388 * The receive call will still be necessary to use the received data.
389 * If there is a need to receive some messages asynchronously, and some not, two different mailboxes should be used.
391 * This call should be done before issuing any receive, and on the receiver's side only
393 XBT_PUBLIC void MSG_mailbox_set_async(const char* alias);
395 /** @brief Opaque type representing a semaphore */
396 typedef sg_sem_t msg_sem_t;
397 XBT_PUBLIC msg_sem_t MSG_sem_init(int initial_value);
398 XBT_PUBLIC void MSG_sem_acquire(msg_sem_t sem);
399 XBT_PUBLIC int MSG_sem_acquire_timeout(msg_sem_t sem, double timeout);
400 XBT_PUBLIC void MSG_sem_release(msg_sem_t sem);
401 XBT_PUBLIC int MSG_sem_get_capacity(const_sg_sem_t sem);
402 XBT_PUBLIC void MSG_sem_destroy(const_sg_sem_t sem);
403 XBT_PUBLIC int MSG_sem_would_block(const_sg_sem_t sem);
405 /** @brief Opaque type representing a barrier identifier */
406 typedef sg_bar_t msg_bar_t;
407 /** @brief Initializes a barrier, with count elements */
408 XBT_PUBLIC msg_bar_t MSG_barrier_init(unsigned int count);
409 /** @brief Destroys barrier */
410 XBT_PUBLIC void MSG_barrier_destroy(sg_bar_t bar);
411 /** @brief Performs a barrier already initialized */
412 XBT_PUBLIC int MSG_barrier_wait(msg_bar_t bar);
414 /* ****************************************************************************************** */