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/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"
24 #include "simix/context.h"
26 /********************************** Simix Global ******************************/
29 typedef struct s_smx_global {
30 smx_context_factory_t context_factory;
32 xbt_dynar_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 } s_smx_global_t, *smx_global_t;
42 extern smx_global_t simix_global;
43 extern unsigned long simix_process_maxpid;
45 /*********************************** Time ************************************/
47 /** @brief Timer datatype */
48 typedef struct s_smx_timer {
54 /********************************* Action *************************************/
58 SIMIX_ACTION_PARALLEL_EXECUTE,
59 SIMIX_ACTION_COMMUNICATE,
63 } e_smx_action_type_t;
72 /** @brief Action datatype */
73 typedef struct s_smx_action {
75 e_smx_action_type_t type; /* Type of SIMIX action*/
76 e_smx_state_t state; /* State of the action */
77 char *name; /* Action name if any */
78 xbt_fifo_t request_list; /* List of requests on this action */
80 /* Data specific to each action type */
84 smx_host_t host; /* The host where the execution takes place */
85 surf_action_t surf_exec; /* The Surf execution action encapsulated */
86 } execution; /* Possibly parallel execution */
89 e_smx_comm_type_t type; /* Type of the communication (SIMIX_COMM_SEND or SIMIX_COMM_RECEIVE) */
90 smx_rdv_t rdv; /* Rendez-vous where the comm is queued */
91 int refcount; /* Number of processes involved in the cond */
92 int detached; /* If detached or not */
94 /* Surf action data */
95 surf_action_t surf_comm; /* The Surf communication action encapsulated */
96 surf_action_t src_timeout; /* Surf's actions to instrument the timeouts */
97 surf_action_t dst_timeout; /* Surf's actions to instrument the timeouts */
98 smx_process_t src_proc;
99 smx_process_t dst_proc;
103 /* Data to be transfered */
106 size_t src_buff_size;
107 size_t *dst_buff_size;
110 void* src_data; /* User data associated to communication */
115 smx_host_t host; /* The host that is sleeping */
116 surf_action_t surf_sleep; /* The Surf sleeping action encapsulated */
125 #ifdef HAVE_LATENCY_BOUND_TRACKING
130 char *category; /* simix action category for instrumentation */
134 /* FIXME: check if we can delete this function */
135 static XBT_INLINE e_smx_state_t SIMIX_action_map_state(e_surf_action_state_t state)
138 case SURF_ACTION_READY:
140 case SURF_ACTION_RUNNING:
141 return SIMIX_RUNNING;
142 case SURF_ACTION_FAILED:
144 case SURF_ACTION_DONE:
147 xbt_die("Unexpected SURF action state");
153 void SIMIX_context_mod_init(void);
154 void SIMIX_context_mod_exit(void);
157 /* All factories init */
158 void SIMIX_ctx_thread_factory_init(smx_context_factory_t *factory);
159 void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory);
160 void SIMIX_ctx_raw_factory_init(smx_context_factory_t *factory);
162 /* ****************************** */
163 /* context manipulation functions */
164 /* ****************************** */
166 /* Scenario for the end of a context:
168 * CASE 1: death after end of the main function
169 * the context_wrapper, called internally by the context module, calls
170 * SIMIX_context_stop after user code stops, smx_context_stop calls user
171 * cleanup_func if any (in context settings), add current process to trashbin
172 * and yields back to maestro.
173 * From time to time, maestro calls SIMIX_context_empty_trash, which destroy
174 * all the process and context data structures, and frees the memory
176 * CASE 2: brutal death
177 * SIMIX_process_kill (from any process) set process->iwannadie = 1 and then
178 * schedules the process. Then the process is awaken in the middle of the
179 * SIMIX_process_yield function, and at the end of it, it checks that
180 * iwannadie == 1, and call SIMIX_context_stop(same than first case afterward)
184 * \brief creates a new context for a user level process
185 * \param code a main function
186 * \param argc the number of arguments of the main function
187 * \param argv the vector of arguments of the main function
188 * \param cleanup_func the function to call when the context stops
189 * \param cleanup_arg the argument of the cleanup_func function
191 static XBT_INLINE smx_context_t SIMIX_context_new(xbt_main_func_t code,
192 int argc, char **argv,
193 void_pfn_smxprocess_t cleanup_func,
194 smx_process_t simix_process)
197 return (*(simix_global->context_factory->create_context))
198 (code, argc, argv, cleanup_func, simix_process);
202 * \brief destroy a context
203 * \param context the context to destroy
204 * Argument must be stopped first -- runs in maestro context
206 static XBT_INLINE void SIMIX_context_free(smx_context_t context)
208 (*(simix_global->context_factory->free)) (context);
212 * \brief stops the execution of a context
213 * \param context to stop
215 static XBT_INLINE void SIMIX_context_stop(smx_context_t context)
217 (*(simix_global->context_factory->stop)) (context);
221 \brief suspends a context and return the control back to the one which
223 \param context the context to be suspended (it must be the running one)
225 static XBT_INLINE void SIMIX_context_suspend(smx_context_t context)
227 (*(simix_global->context_factory->suspend)) (context);
231 \brief executes all the processes (in parallel if possible)
232 \param processes the dynar of processes to execute
234 static XBT_INLINE void SIMIX_context_runall(xbt_dynar_t processes)
236 (*(simix_global->context_factory->runall)) (processes);
240 \brief returns the current running context
242 static XBT_INLINE smx_context_t SIMIX_context_self(void)
244 if (simix_global && simix_global->context_factory != NULL) {
245 return (*(simix_global->context_factory->self))();
252 \brief returns the data associated to a context
253 \param context The context
256 static XBT_INLINE void* SIMIX_context_get_data(smx_context_t context)
258 return (*(simix_global->context_factory->get_data))(context);
262 \brief returns the thread's pid running the current context
265 static XBT_INLINE int SIMIX_context_get_thread_id(void)
267 return (*(simix_global->context_factory->get_thread_id))();
270 XBT_PUBLIC(int) SIMIX_process_get_maxpid(void);