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 "simix/simix.h"
11 #include "surf/surf.h"
15 #include "xbt/config.h"
16 #include "xbt/function_types.h"
17 #include "xbt/ex_interface.h"
18 #include "instr/private.h"
19 #include "process_private.h"
20 #include "host_private.h"
21 #include "network_private.h"
22 #include "smurf_private.h"
23 #include "synchro_private.h"
25 /********************************** Simix Global ******************************/
27 typedef struct s_smx_context_factory *smx_context_factory_t;
29 typedef struct s_smx_global {
30 smx_context_factory_t context_factory;
32 xbt_swag_t process_to_run;
33 xbt_swag_t process_list;
34 xbt_swag_t process_to_destroy;
35 smx_process_t maestro_process;
36 xbt_dict_t registered_functions;
37 smx_creation_func_t create_process_function;
38 void_f_pvoid_t kill_process_function;
39 void_pfn_smxprocess_t cleanup_process_function;
40 #ifdef HAVE_LATENCY_BOUND_TRACKING
41 xbt_dict_t latency_limited_dict;
43 } s_smx_global_t, *smx_global_t;
45 extern smx_global_t simix_global;
48 /*********************************** Time ************************************/
50 /** @brief Timer datatype */
51 typedef struct s_smx_timer {
57 /********************************* Action *************************************/
61 SIMIX_ACTION_PARALLEL_EXECUTE,
62 SIMIX_ACTION_COMMUNICATE,
66 } e_smx_action_type_t;
75 /** @brief Action datatype */
76 typedef struct s_smx_action {
78 e_smx_action_type_t type; /* Type of SIMIX action*/
79 e_smx_state_t state; /* State of the action */
80 char *name; /* Action name if any */
81 xbt_fifo_t request_list; /* List of requests on this action */
83 /* Data specific to each action type */
87 smx_host_t host; /* The host where the execution takes place */
88 surf_action_t surf_exec; /* The Surf execution action encapsulated */
89 } execution; /* Possibly parallel execution */
92 e_smx_comm_type_t type; /* Type of the communication (SIMIX_COMM_SEND or SIMIX_COMM_RECEIVE) */
93 smx_rdv_t rdv; /* Rendez-vous where the comm is queued */
94 int refcount; /* Number of processes involved in the cond */
96 /* Surf action data */
97 surf_action_t surf_comm; /* The Surf communication action encapsulated */
98 surf_action_t src_timeout; /* Surf's actions to instrument the timeouts */
99 surf_action_t dst_timeout; /* Surf's actions to instrument the timeouts */
100 smx_process_t src_proc;
101 smx_process_t dst_proc;
105 /* Data to be transfered */
108 size_t src_buff_size;
109 size_t *dst_buff_size;
112 void *data; /* User data associated to communication */
116 smx_host_t host; /* The host that is sleeping */
117 surf_action_t surf_sleep; /* The Surf sleeping action encapsulated */
127 long long int counter; /* simix action unique identifier for instrumentation */
128 char *category; /* simix action category for instrumentation */
132 /* FIXME: check if we can delete this function */
133 static XBT_INLINE e_smx_state_t SIMIX_action_map_state(e_surf_action_state_t state)
136 case SURF_ACTION_READY:
138 case SURF_ACTION_RUNNING:
139 return SIMIX_RUNNING;
140 case SURF_ACTION_FAILED:
142 case SURF_ACTION_DONE:
145 xbt_die("Unexpected SURF action state");
149 /******************************** Context *************************************/
151 /* The following function pointer types describe the interface that any context
152 factory should implement */
155 typedef smx_context_t(*smx_pfn_context_factory_create_context_t)
156 (xbt_main_func_t, int, char **, void_pfn_smxprocess_t, void* data);
157 typedef int (*smx_pfn_context_factory_finalize_t) (smx_context_factory_t*);
158 typedef void (*smx_pfn_context_free_t) (smx_context_t);
159 typedef void (*smx_pfn_context_start_t) (smx_context_t);
160 typedef void (*smx_pfn_context_stop_t) (smx_context_t);
161 typedef void (*smx_pfn_context_suspend_t) (smx_context_t context);
162 typedef void (*smx_pfn_context_runall_t) (xbt_swag_t processes);
163 typedef smx_context_t (*smx_pfn_context_self_t) (void);
164 typedef void* (*smx_pfn_context_get_data_t) (smx_context_t context);
166 /* interface of the context factories */
167 typedef struct s_smx_context_factory {
169 smx_pfn_context_factory_create_context_t create_context;
170 smx_pfn_context_factory_finalize_t finalize;
171 smx_pfn_context_free_t free;
172 smx_pfn_context_stop_t stop;
173 smx_pfn_context_suspend_t suspend;
174 smx_pfn_context_runall_t runall;
175 smx_pfn_context_self_t self;
176 smx_pfn_context_get_data_t get_data;
177 } s_smx_context_factory_t;
180 void SIMIX_context_mod_init(void);
181 void SIMIX_context_mod_exit(void);
184 /* All factories init */
185 void SIMIX_ctx_thread_factory_init(smx_context_factory_t *factory);
186 void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory);
188 /* ****************************** */
189 /* context manipulation functions */
190 /* ****************************** */
192 /* Scenario for the end of a context:
194 * CASE 1: death after end of the main function
195 * the context_wrapper, called internally by the context module, calls
196 * SIMIX_context_stop after user code stops, smx_context_stop calls user
197 * cleanup_func if any (in context settings), add current process to trashbin
198 * and yields back to maestro.
199 * From time to time, maestro calls SIMIX_context_empty_trash, which destroy
200 * all the process and context data structures, and frees the memory
202 * CASE 2: brutal death
203 * SIMIX_process_kill (from any process) set process->iwannadie = 1 and then
204 * schedules the process. Then the process is awaken in the middle of the
205 * SIMIX_process_yield function, and at the end of it, it checks that
206 * iwannadie == 1, and call SIMIX_context_stop(same than first case afterward)
210 * \brief creates a new context for a user level process
211 * \param code a main function
212 * \param argc the number of arguments of the main function
213 * \param argv the vector of arguments of the main function
214 * \param cleanup_func the function to call when the context stops
215 * \param cleanup_arg the argument of the cleanup_func function
217 static XBT_INLINE smx_context_t SIMIX_context_new(xbt_main_func_t code,
218 int argc, char **argv,
219 void_pfn_smxprocess_t cleanup_func,
220 smx_process_t simix_process)
223 return (*(simix_global->context_factory->create_context))
224 (code, argc, argv, cleanup_func, simix_process);
228 * \brief destroy a context
229 * \param context the context to destroy
230 * Argument must be stopped first -- runs in maestro context
232 static XBT_INLINE void SIMIX_context_free(smx_context_t context)
234 (*(simix_global->context_factory->free)) (context);
238 * \brief stops the execution of a context
239 * \param context to stop
241 static XBT_INLINE void SIMIX_context_stop(smx_context_t context)
243 (*(simix_global->context_factory->stop)) (context);
247 \brief suspends a context and return the control back to the one which
249 \param context the context to be suspended (it must be the running one)
251 static XBT_INLINE void SIMIX_context_suspend(smx_context_t context)
253 (*(simix_global->context_factory->suspend)) (context);
257 \brief executes all the processes (in parallel if possible)
258 \param processes the swag of processes to execute
260 static XBT_INLINE void SIMIX_context_runall(xbt_swag_t processes)
262 (*(simix_global->context_factory->runall)) (processes);
266 \brief returns the current running context
268 static XBT_INLINE smx_context_t SIMIX_context_self(void)
270 if (simix_global->context_factory == NULL) {
274 return (*(simix_global->context_factory->self))();
278 \brief returns the data associated to a context
279 \param context The context
282 static XBT_INLINE void* SIMIX_context_get_data(smx_context_t context)
284 return (*(simix_global->context_factory->get_data))(context);