1 /* Copyright (c) 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 #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 "smx_smurf_private.h"
26 #include "smx_synchro_private.h"
29 # include <win32_ucontext.h> /* context relative declarations */
31 # include <ucontext.h> /* context relative declarations */
34 /* Define only for SimGrid benchmarking purposes */
35 //#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 */
36 //#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). */
38 /********************************** Simix Global ******************************/
39 typedef struct s_smx_global {
40 smx_context_factory_t context_factory;
41 xbt_dynar_t process_to_run;
42 xbt_dynar_t process_that_ran;
43 xbt_swag_t process_list;
44 xbt_swag_t process_to_destroy;
45 smx_process_t maestro_process;
46 xbt_dict_t registered_functions;
47 smx_creation_func_t create_process_function;
48 void_pfn_smxprocess_t_smxprocess_t kill_process_function;
49 void_pfn_smxprocess_t cleanup_process_function;
50 xbt_mallocator_t action_mallocator;
51 void_pfn_smxhost_t autorestart;
53 #ifdef TIME_BENCH_AMDAHL
54 xbt_os_timer_t timer_seq; /* used to bench the sequential and parallel parts of the simulation, if requested to */
55 xbt_os_timer_t timer_par;
57 } s_smx_global_t, *smx_global_t;
59 extern smx_global_t simix_global;
60 extern unsigned long simix_process_maxpid;
62 extern xbt_dict_t watched_hosts_lib;
64 /******************************** Exceptions *********************************/
66 #define SMX_EXCEPTION(issuer, c, v, m) \
68 smx_process_t _smx_throw_issuer = (issuer); \
69 THROW_PREPARE(_smx_throw_issuer->running_ctx, (c), (v), xbt_strdup(m)); \
70 _smx_throw_issuer->doexception = 1; \
73 #define SMX_THROW() RETHROW
75 /* ******************************** File ************************************ */
76 typedef struct s_smx_file {
77 surf_file_t surf_file;
80 typedef struct s_smx_stat {
81 s_file_stat_t surf_stat;
84 /*********************************** Time ************************************/
86 /** @brief Timer datatype */
87 typedef struct s_smx_timer {
93 /********************************* Action *************************************/
97 SIMIX_ACTION_PARALLEL_EXECUTE,
98 SIMIX_ACTION_COMMUNICATE,
100 SIMIX_ACTION_SYNCHRO,
102 } e_smx_action_type_t;
118 /** @brief Action datatype */
119 typedef struct s_smx_action {
121 e_smx_action_type_t type; /* Type of SIMIX action*/
122 e_smx_state_t state; /* State of the action */
123 char *name; /* Action name if any */
124 xbt_fifo_t simcalls; /* List of simcalls waiting for this action */
126 /* Data specific to each action type */
130 smx_host_t host; /* The host where the execution takes place */
131 surf_action_t surf_exec; /* The Surf execution action encapsulated */
132 } execution; /* Possibly parallel execution */
135 e_smx_comm_type_t type; /* Type of the communication (SIMIX_COMM_SEND or SIMIX_COMM_RECEIVE) */
136 smx_rdv_t rdv; /* Rendez-vous where the comm is queued */
137 int refcount; /* Number of processes involved in the cond */
138 int detached; /* If detached or not */
140 void (*clean_fun)(void*); /* Function to clean the detached src_buf if something goes wrong */
141 int (*match_fun)(void*,void*,smx_action_t); /* Filter function used by the other side. It is used when
142 looking if a given communication matches my needs. For that, myself must match the
143 expectations of the other side, too. See */
145 /* Surf action data */
146 surf_action_t surf_comm; /* The Surf communication action encapsulated */
147 surf_action_t src_timeout; /* Surf's actions to instrument the timeouts */
148 surf_action_t dst_timeout; /* Surf's actions to instrument the timeouts */
149 smx_process_t src_proc;
150 smx_process_t dst_proc;
154 /* Data to be transfered */
157 size_t src_buff_size;
158 size_t *dst_buff_size;
159 unsigned copied:1; /* whether the data were already copied */
161 void* src_data; /* User data associated to communication */
166 smx_host_t host; /* The host that is sleeping */
167 surf_action_t surf_sleep; /* The Surf sleeping action encapsulated */
176 surf_action_t surf_io;
180 #ifdef HAVE_LATENCY_BOUND_TRACKING
185 char *category; /* simix action category for instrumentation */
189 /* FIXME: check if we can delete this function */
190 static XBT_INLINE e_smx_state_t SIMIX_action_map_state(e_surf_action_state_t state)
193 case SURF_ACTION_READY:
195 case SURF_ACTION_RUNNING:
196 return SIMIX_RUNNING;
197 case SURF_ACTION_FAILED:
199 case SURF_ACTION_DONE:
202 xbt_die("Unexpected SURF action state");
206 void SIMIX_context_mod_init(void);
207 void SIMIX_context_mod_exit(void);
209 void SIMIX_context_set_current(smx_context_t context);
210 smx_context_t SIMIX_context_get_current(void);
212 /* All factories init */
214 typedef struct s_smx_ctx_sysv {
215 s_smx_ctx_base_t super; /* Fields of super implementation */
216 ucontext_t uc; /* the ucontext that executes the code */
217 #ifdef HAVE_VALGRIND_VALGRIND_H
218 unsigned int valgrind_stack_id; /* the valgrind stack id */
220 char stack[0]; /* the thread stack (must remain the last element of the structure) */
221 } s_smx_ctx_sysv_t, *smx_ctx_sysv_t;
223 void SIMIX_ctx_thread_factory_init(smx_context_factory_t *factory);
224 void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory);
225 void SIMIX_ctx_raw_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 return simix_global->context_factory->create_context(code,
269 * \brief destroy a context
270 * \param context the context to destroy
271 * Argument must be stopped first -- runs in maestro context
273 static XBT_INLINE void SIMIX_context_free(smx_context_t context)
275 simix_global->context_factory->free(context);
279 * \brief stops the execution of a context
280 * \param context to stop
282 static XBT_INLINE void SIMIX_context_stop(smx_context_t context)
284 simix_global->context_factory->stop(context);
288 \brief suspends a context and return the control back to the one which
290 \param context the context to be suspended (it must be the running one)
292 static XBT_INLINE void SIMIX_context_suspend(smx_context_t context)
294 simix_global->context_factory->suspend(context);
298 \brief Executes all the processes to run (in parallel if possible).
300 static XBT_INLINE void SIMIX_context_runall(void)
302 simix_global->context_factory->runall();
306 \brief returns the current running context
308 static XBT_INLINE smx_context_t SIMIX_context_self(void)
310 if (simix_global && simix_global->context_factory) {
311 return simix_global->context_factory->self();
318 \brief returns the data associated to a context
319 \param context The context
322 static XBT_INLINE void* SIMIX_context_get_data(smx_context_t context)
324 return simix_global->context_factory->get_data(context);
327 XBT_PUBLIC(int) SIMIX_process_get_maxpid(void);
329 void SIMIX_post_create_environment(void);