1 /* Copyright (c) 2007-2010, 2012-2015. 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"
16 #include "xbt/mallocator.h"
17 #include "xbt/config.h"
18 #include "xbt/xbt_os_time.h"
19 #include "xbt/function_types.h"
20 #include "src/xbt/ex_interface.h"
21 #include "src/instr/instr_private.h"
22 #include "smx_process_private.h"
23 #include "smx_host_private.h"
24 #include "smx_io_private.h"
25 #include "smx_network_private.h"
26 #include "popping_private.h"
27 #include "smx_synchro_private.h"
31 /* Define only for SimGrid benchmarking purposes */
32 //#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 */
33 //#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). */
34 //#define ADAPTIVE_THRESHOLD /* this is to enable the adaptive threshold algorithm in raw contexts*/
35 //#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)*/
37 #ifdef TIME_BENCH_PER_SR
38 XBT_PRIVATE void smx_ctx_raw_new_sr(void);
40 /********************************** Simix Global ******************************/
41 typedef struct s_smx_global {
42 smx_context_factory_t context_factory;
43 xbt_dynar_t process_to_run;
44 xbt_dynar_t process_that_ran;
45 xbt_swag_t process_list;
46 xbt_swag_t process_to_destroy;
47 smx_process_t maestro_process;
48 xbt_dict_t registered_functions;
49 smx_creation_func_t create_process_function;
50 void_pfn_smxprocess_t_smxprocess_t kill_process_function;
51 /** Callback used when killing a SMX_process */
52 void_pfn_smxprocess_t cleanup_process_function;
53 xbt_mallocator_t synchro_mallocator;
54 void_pfn_sghost_t autorestart;
56 #ifdef TIME_BENCH_AMDAHL
57 xbt_os_timer_t timer_seq; /* used to bench the sequential and parallel parts of the simulation, if requested to */
58 xbt_os_timer_t timer_par;
62 } s_smx_global_t, *smx_global_t;
64 XBT_PUBLIC_DATA(smx_global_t) simix_global;
65 extern XBT_PRIVATE unsigned long simix_process_maxpid;
67 XBT_PUBLIC(void) SIMIX_clean(void);
69 /******************************** Exceptions *********************************/
70 /** @brief Ask to the provided simix process to raise the provided exception */
71 #define SMX_EXCEPTION(issuer, cat, val, msg) \
73 smx_process_t _smx_throw_issuer = (issuer); /* evaluate only once */\
74 THROW_PREPARE(_smx_throw_issuer->running_ctx, (cat), (val), xbt_strdup(msg)); \
75 _smx_throw_issuer->doexception = 1; \
78 #define SMX_THROW() RETHROW
80 /* ******************************** File ************************************ */
81 typedef struct s_smx_file {
82 surf_file_t surf_file;
83 void* data; /**< @brief user data */
86 /*********************************** Time ************************************/
88 /** @brief Timer datatype */
89 typedef struct s_smx_timer {
95 /********************************* synchro *************************************/
99 SIMIX_SYNC_PARALLEL_EXECUTE,
100 SIMIX_SYNC_COMMUNICATE,
105 } e_smx_synchro_type_t;
121 /** @brief synchro datatype */
122 typedef struct s_smx_synchro {
124 e_smx_synchro_type_t type; /* Type of SIMIX synchro */
125 e_smx_state_t state; /* State of the synchro */
126 char *name; /* synchro name if any */
127 xbt_fifo_t simcalls; /* List of simcalls waiting for this synchro */
129 /* Data specific to each synchro type */
133 sg_host_t host; /* The host where the execution takes place */
134 surf_action_t surf_exec; /* The Surf execution action encapsulated */
135 } execution; /* Possibly parallel execution */
138 e_smx_comm_type_t type; /* Type of the communication (SIMIX_COMM_SEND or SIMIX_COMM_RECEIVE) */
139 smx_rdv_t rdv; /* Rendez-vous where the comm is queued */
142 smx_rdv_t rdv_cpy; /* Copy of the rendez-vous where the comm is queued, MC needs it for DPOR
143 (comm.rdv set to NULL when the communication is removed from the mailbox
144 (used as garbage collector)) */
146 int refcount; /* Number of processes involved in the cond */
147 int detached; /* If detached or not */
149 void (*clean_fun)(void*); /* Function to clean the detached src_buf if something goes wrong */
150 int (*match_fun)(void*,void*,smx_synchro_t); /* Filter function used by the other side. It is used when
151 looking if a given communication matches my needs. For that, myself must match the
152 expectations of the other side, too. See */
153 void (*copy_data_fun) (smx_synchro_t, void*, size_t);
155 /* Surf action data */
156 surf_action_t surf_comm; /* The Surf communication action encapsulated */
157 surf_action_t src_timeout; /* Surf's actions to instrument the timeouts */
158 surf_action_t dst_timeout; /* Surf's actions to instrument the timeouts */
159 smx_process_t src_proc;
160 smx_process_t dst_proc;
164 /* Data to be transfered */
167 size_t src_buff_size;
168 size_t *dst_buff_size;
169 unsigned copied:1; /* whether the data were already copied */
171 void* src_data; /* User data associated to communication */
176 sg_host_t host; /* The host that is sleeping */
177 surf_action_t surf_sleep; /* The Surf sleeping action encapsulated */
186 surf_action_t surf_io;
190 #ifdef HAVE_LATENCY_BOUND_TRACKING
194 char *category; /* simix action category for instrumentation */
197 XBT_PRIVATE void SIMIX_context_mod_init(void);
198 XBT_PRIVATE void SIMIX_context_mod_exit(void);
201 XBT_PUBLIC_DATA(char sigsegv_stack[SIGSTKSZ]);
204 /* We are using the bottom of the stack to save some information, like the
205 * valgrind_stack_id. Define smx_context_usable_stack_size to give the remaining
206 * size for the stack. */
207 #ifdef HAVE_VALGRIND_VALGRIND_H
208 # define smx_context_usable_stack_size \
209 (smx_context_stack_size - sizeof(unsigned int)) /* for valgrind_stack_id */
211 # define smx_context_usable_stack_size smx_context_stack_size
214 XBT_PRIVATE void *SIMIX_context_stack_new(void);
215 XBT_PRIVATE void SIMIX_context_stack_delete(void *stack);
217 XBT_PRIVATE void SIMIX_context_set_current(smx_context_t context);
218 XBT_PRIVATE smx_context_t SIMIX_context_get_current(void);
220 /* All factories init */
222 XBT_PRIVATE void SIMIX_ctx_thread_factory_init(smx_context_factory_t *factory);
223 XBT_PRIVATE void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory);
224 XBT_PRIVATE void SIMIX_ctx_raw_factory_init(smx_context_factory_t *factory);
225 XBT_PRIVATE void SIMIX_ctx_boost_factory_init(smx_context_factory_t *factory);
227 /* ****************************** */
228 /* context manipulation functions */
229 /* ****************************** */
231 /* Scenario for the end of a context:
233 * CASE 1: death after end of the main function
234 * the context_wrapper, called internally by the context module, calls
235 * SIMIX_context_stop after user code stops, smx_context_stop calls user
236 * cleanup_func if any (in context settings), add current process to trashbin
237 * and yields back to maestro.
238 * From time to time, maestro calls SIMIX_context_empty_trash, which destroy
239 * all the process and context data structures, and frees the memory
241 * CASE 2: brutal death
242 * SIMIX_process_kill (from any process) set process->iwannadie = 1 and then
243 * schedules the process. Then the process is awaken in the middle of the
244 * SIMIX_process_yield function, and at the end of it, it checks that
245 * iwannadie == 1, and call SIMIX_context_stop(same than first case afterward)
249 * \brief creates a new context for a user level process
250 * \param code a main function
251 * \param argc the number of arguments of the main function
252 * \param argv the vector of arguments of the main function
253 * \param cleanup_func the function to call when the context stops
254 * \param cleanup_arg the argument of the cleanup_func function
256 static XBT_INLINE smx_context_t SIMIX_context_new(xbt_main_func_t code,
257 int argc, char **argv,
258 void_pfn_smxprocess_t cleanup_func,
259 smx_process_t simix_process)
262 xbt_die("simix is not initialized, please call MSG_init first");
263 return simix_global->context_factory->create_context(code,
270 * \brief destroy a context
271 * \param context the context to destroy
272 * Argument must be stopped first -- runs in maestro context
274 static XBT_INLINE void SIMIX_context_free(smx_context_t context)
276 simix_global->context_factory->free(context);
280 * \brief stops the execution of a context
281 * \param context to stop
283 static XBT_INLINE void SIMIX_context_stop(smx_context_t context)
285 simix_global->context_factory->stop(context);
289 \brief suspends a context and return the control back to the one which
291 \param context the context to be suspended (it must be the running one)
293 static XBT_INLINE void SIMIX_context_suspend(smx_context_t context)
295 simix_global->context_factory->suspend(context);
299 \brief Executes all the processes to run (in parallel if possible).
301 static XBT_INLINE void SIMIX_context_runall(void)
303 if (!xbt_dynar_is_empty(simix_global->process_to_run)) {
304 simix_global->context_factory->runall();
309 \brief returns the current running context
311 static XBT_INLINE smx_context_t SIMIX_context_self(void)
313 if (simix_global && simix_global->context_factory) {
314 return simix_global->context_factory->self();
320 \brief returns the SIMIX process associated to a context
321 \param context The context
322 \return The SIMIX process
324 static XBT_INLINE smx_process_t SIMIX_context_get_process(smx_context_t context)
326 return simix_global->context_factory->get_process(context);
329 XBT_PUBLIC(int) SIMIX_process_get_maxpid(void);
331 XBT_PRIVATE void SIMIX_post_create_environment(void);