1 /* Copyright (c) 2007-2010, 2012-2014. 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 #ifndef _SIMIX_PRIVATE_H
8 #define _SIMIX_PRIVATE_H
10 #include "simgrid/simix.h"
11 #include "surf/surf.h"
15 #include "xbt/mallocator.h"
16 #include "xbt/config.h"
17 #include "xbt/xbt_os_time.h"
18 #include "xbt/function_types.h"
19 #include "xbt/ex_interface.h"
20 #include "instr/instr_private.h"
21 #include "smx_process_private.h"
22 #include "smx_host_private.h"
23 #include "smx_io_private.h"
24 #include "smx_network_private.h"
25 #include "popping_private.h"
26 #include "smx_synchro_private.h"
28 /* Define only for SimGrid benchmarking purposes */
29 //#define TIME_BENCH_PER_SR /* this aims at measuring the time spent in each scheduling round per each thread. The code is thus run in sequential to bench separately each SSR */
30 //#define TIME_BENCH_AMDAHL /* this aims at measuring the porting of time that could be parallelized at maximum (to get the optimal speedup by applying the amdahl law). */
31 //#define ADAPTIVE_THRESHOLD /* this is to enable the adaptive threshold algorithm in raw contexts*/
32 //#define TIME_BENCH_ENTIRE_SRS /* more general benchmark than TIME_BENCH_PER_SR. It aims to measure the total time spent in a whole scheduling round (including synchro costs)*/
34 #ifdef TIME_BENCH_PER_SR
35 void smx_ctx_raw_new_sr(void);
37 /********************************** Simix Global ******************************/
38 typedef struct s_smx_global {
39 smx_context_factory_t context_factory;
40 xbt_dynar_t process_to_run;
41 xbt_dynar_t process_that_ran;
42 xbt_swag_t process_list;
43 xbt_swag_t process_to_destroy;
44 smx_process_t maestro_process;
45 xbt_dict_t registered_functions;
46 smx_creation_func_t create_process_function;
47 void_pfn_smxprocess_t_smxprocess_t kill_process_function;
48 void_pfn_smxprocess_t cleanup_process_function;
49 xbt_mallocator_t synchro_mallocator;
50 void_pfn_smxhost_t autorestart;
52 #ifdef TIME_BENCH_AMDAHL
53 xbt_os_timer_t timer_seq; /* used to bench the sequential and parallel parts of the simulation, if requested to */
54 xbt_os_timer_t timer_par;
56 } s_smx_global_t, *smx_global_t;
58 XBT_PUBLIC_DATA(smx_global_t) simix_global;
59 extern unsigned long simix_process_maxpid;
61 extern xbt_dict_t watched_hosts_lib;
66 XBT_PUBLIC(void) SIMIX_clean(void);
71 /******************************** Exceptions *********************************/
72 /** @brief Ask to the provided simix process to raise the provided exception */
73 #define SMX_EXCEPTION(issuer, cat, val, msg) \
75 smx_process_t _smx_throw_issuer = (issuer); /* evaluate only once */\
76 THROW_PREPARE(_smx_throw_issuer->running_ctx, (cat), (val), xbt_strdup(msg)); \
77 _smx_throw_issuer->doexception = 1; \
80 #define SMX_THROW() RETHROW
82 /* ******************************** File ************************************ */
83 typedef struct s_smx_file {
84 surf_file_t surf_file;
85 void* data; /**< @brief user data */
88 /*********************************** Time ************************************/
90 /** @brief Timer datatype */
91 typedef struct s_smx_timer {
97 /********************************* synchro *************************************/
101 SIMIX_SYNC_PARALLEL_EXECUTE,
102 SIMIX_SYNC_COMMUNICATE,
107 } e_smx_synchro_type_t;
123 /** @brief synchro datatype */
124 typedef struct s_smx_synchro {
126 e_smx_synchro_type_t type; /* Type of SIMIX synchro */
127 e_smx_state_t state; /* State of the synchro */
128 char *name; /* synchro name if any */
129 xbt_fifo_t simcalls; /* List of simcalls waiting for this synchro */
131 /* Data specific to each synchro type */
135 smx_host_t host; /* The host where the execution takes place */
136 surf_action_t surf_exec; /* The Surf execution action encapsulated */
137 } execution; /* Possibly parallel execution */
140 e_smx_comm_type_t type; /* Type of the communication (SIMIX_COMM_SEND or SIMIX_COMM_RECEIVE) */
141 smx_rdv_t rdv; /* Rendez-vous where the comm is queued */
144 smx_rdv_t rdv_cpy; /* Copy of the rendez-vous where the comm is queued, MC needs it for DPOR
145 (comm.rdv set to NULL when the communication is removed from the mailbox
146 (used as garbage collector)) */
148 int refcount; /* Number of processes involved in the cond */
149 int detached; /* If detached or not */
151 void (*clean_fun)(void*); /* Function to clean the detached src_buf if something goes wrong */
152 int (*match_fun)(void*,void*,smx_synchro_t); /* Filter function used by the other side. It is used when
153 looking if a given communication matches my needs. For that, myself must match the
154 expectations of the other side, too. See */
155 void (*copy_data_fun) (smx_synchro_t, void*, size_t);
157 /* Surf action data */
158 surf_action_t surf_comm; /* The Surf communication action encapsulated */
159 surf_action_t src_timeout; /* Surf's actions to instrument the timeouts */
160 surf_action_t dst_timeout; /* Surf's actions to instrument the timeouts */
161 smx_process_t src_proc;
162 smx_process_t dst_proc;
166 /* Data to be transfered */
169 size_t src_buff_size;
170 size_t *dst_buff_size;
171 unsigned copied:1; /* whether the data were already copied */
173 void* src_data; /* User data associated to communication */
178 smx_host_t host; /* The host that is sleeping */
179 surf_action_t surf_sleep; /* The Surf sleeping action encapsulated */
188 surf_action_t surf_io;
192 #ifdef HAVE_LATENCY_BOUND_TRACKING
197 char *category; /* simix action category for instrumentation */
201 void SIMIX_context_mod_init(void);
202 void SIMIX_context_mod_exit(void);
205 XBT_PUBLIC_DATA(char sigsegv_stack[SIGSTKSZ]);
208 /* We are using the bottom of the stack to save some information, like the
209 * valgrind_stack_id. Define smx_context_usable_stack_size to give the remaining
210 * size for the stack. */
211 #ifdef HAVE_VALGRIND_VALGRIND_H
212 # define smx_context_usable_stack_size \
213 (smx_context_stack_size - sizeof(unsigned int)) /* for valgrind_stack_id */
215 # define smx_context_usable_stack_size smx_context_stack_size
218 void *SIMIX_context_stack_new(void);
219 void SIMIX_context_stack_delete(void *stack);
221 void SIMIX_context_set_current(smx_context_t context);
222 smx_context_t SIMIX_context_get_current(void);
224 /* All factories init */
226 void SIMIX_ctx_thread_factory_init(smx_context_factory_t *factory);
227 void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory);
228 void SIMIX_ctx_raw_factory_init(smx_context_factory_t *factory);
230 /* ****************************** */
231 /* context manipulation functions */
232 /* ****************************** */
234 /* Scenario for the end of a context:
236 * CASE 1: death after end of the main function
237 * the context_wrapper, called internally by the context module, calls
238 * SIMIX_context_stop after user code stops, smx_context_stop calls user
239 * cleanup_func if any (in context settings), add current process to trashbin
240 * and yields back to maestro.
241 * From time to time, maestro calls SIMIX_context_empty_trash, which destroy
242 * all the process and context data structures, and frees the memory
244 * CASE 2: brutal death
245 * SIMIX_process_kill (from any process) set process->iwannadie = 1 and then
246 * schedules the process. Then the process is awaken in the middle of the
247 * SIMIX_process_yield function, and at the end of it, it checks that
248 * iwannadie == 1, and call SIMIX_context_stop(same than first case afterward)
252 * \brief creates a new context for a user level process
253 * \param code a main function
254 * \param argc the number of arguments of the main function
255 * \param argv the vector of arguments of the main function
256 * \param cleanup_func the function to call when the context stops
257 * \param cleanup_arg the argument of the cleanup_func function
259 static XBT_INLINE smx_context_t SIMIX_context_new(xbt_main_func_t code,
260 int argc, char **argv,
261 void_pfn_smxprocess_t cleanup_func,
262 smx_process_t simix_process)
265 xbt_die("simix is not initialized, please call MSG_init first");
266 return simix_global->context_factory->create_context(code,
273 * \brief destroy a context
274 * \param context the context to destroy
275 * Argument must be stopped first -- runs in maestro context
277 static XBT_INLINE void SIMIX_context_free(smx_context_t context)
279 simix_global->context_factory->free(context);
283 * \brief stops the execution of a context
284 * \param context to stop
286 static XBT_INLINE void SIMIX_context_stop(smx_context_t context)
288 simix_global->context_factory->stop(context);
292 \brief suspends a context and return the control back to the one which
294 \param context the context to be suspended (it must be the running one)
296 static XBT_INLINE void SIMIX_context_suspend(smx_context_t context)
298 simix_global->context_factory->suspend(context);
302 \brief Executes all the processes to run (in parallel if possible).
304 static XBT_INLINE void SIMIX_context_runall(void)
306 if (!xbt_dynar_is_empty(simix_global->process_to_run)) {
307 simix_global->context_factory->runall();
312 \brief returns the current running context
314 static XBT_INLINE smx_context_t SIMIX_context_self(void)
316 if (simix_global && simix_global->context_factory) {
317 return simix_global->context_factory->self();
323 \brief returns the SIMIX process associated to a context
324 \param context The context
325 \return The SIMIX process
327 static XBT_INLINE smx_process_t SIMIX_context_get_process(smx_context_t context)
329 return simix_global->context_factory->get_process(context);
332 XBT_PUBLIC(int) SIMIX_process_get_maxpid(void);
334 void SIMIX_post_create_environment(void);