3 /* Copyright (c) 2007 Arnaud Legrand, Bruno Donnassolo.
4 All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #ifndef SIMIX_PRIVATE_H
10 #define SIMIX_PRIVATE_H
12 #include "simix/simix.h"
13 #include "surf/surf.h"
17 #include "xbt/config.h"
18 #include "xbt/function_types.h"
19 #include "xbt/ex_interface.h"
20 #include "instr/private.h"
21 #include "instr/config.h"
23 /******************************** Datatypes ***********************************/
26 /*********************************** Host *************************************/
28 /** @brief Host datatype
29 @ingroup m_datatypes_management_details */
30 typedef struct s_smx_host {
31 char *name; /**< @brief host name if any */
32 void *host; /* SURF modeling */
33 xbt_swag_t process_list;
34 void *data; /**< @brief user data */
37 /********************************** Simix Global ******************************/
39 typedef struct s_smx_context_factory *smx_context_factory_t;
41 typedef struct SIMIX_Global {
42 smx_context_factory_t context_factory;
44 xbt_swag_t process_to_run;
45 xbt_swag_t process_list;
46 xbt_swag_t process_to_destroy;
47 smx_process_t current_process;
48 smx_process_t maestro_process;
49 xbt_dict_t registered_functions;
50 smx_creation_func_t create_process_function;
51 void_f_pvoid_t kill_process_function;
52 void_f_pvoid_t cleanup_process_function;
53 } s_SIMIX_Global_t, *SIMIX_Global_t;
55 extern SIMIX_Global_t simix_global;
57 /******************************** Process *************************************/
59 /** @brief Process datatype
60 @ingroup m_datatypes_management_details @{ */
61 typedef struct s_smx_process {
62 s_xbt_swag_hookup_t process_hookup;
63 s_xbt_swag_hookup_t synchro_hookup; /* process_to_run or mutex->sleeping and co */
64 s_xbt_swag_hookup_t host_proc_hookup;
65 s_xbt_swag_hookup_t destroy_hookup;
67 char *name; /**< @brief process name if any */
68 smx_host_t smx_host; /* the host on which the process is running */
69 smx_context_t context; /* the context that executes the scheduler function */
74 smx_mutex_t mutex; /* mutex on which the process is blocked */
75 smx_cond_t cond; /* cond on which the process is blocked */
76 smx_sem_t sem; /* semaphore on which the process is blocked */
77 smx_action_t waiting_action;
78 xbt_dict_t properties;
79 void *data; /* kept for compatibility, it should be replaced with moddata */
84 typedef struct s_smx_process_arg {
92 xbt_dict_t properties;
93 } s_smx_process_arg_t, *smx_process_arg_t;
95 void SIMIX_create_maestro_process(void);
96 void SIMIX_process_empty_trash(void);
97 void SIMIX_process_schedule(smx_process_t process);
98 ex_ctx_t *SIMIX_process_get_exception(void);
99 void SIMIX_process_exception_terminate(xbt_ex_t * e);
101 /*************************** Mutex and Conditional ****************************/
103 typedef struct s_smx_mutex {
105 /* KEEP IT IN SYNC WITH src/xbt_sg_thread.c::struct s_xbt_mutex */
106 xbt_swag_t sleeping; /* list of sleeping process */
108 /* KEEP IT IN SYNC WITH src/xbt_sg_thread.c::struct s_xbt_mutex */
112 typedef struct s_smx_cond {
114 /* KEEP IT IN SYNC WITH src/xbt_sg_thread.c::struct s_xbt_cond */
115 xbt_swag_t sleeping; /* list of sleeping process */
117 xbt_fifo_t actions; /* list of actions */
118 /* KEEP IT IN SYNC WITH src/xbt_sg_thread.c::struct s_xbt_cond */
122 typedef struct s_smx_sem {
123 /* KEEP IT IN SYNC WITH src/xbt_sg_thread.c::struct s_xbt_sem */
124 xbt_swag_t sleeping; /* list of sleeping process */
126 xbt_fifo_t actions; /* list of actions */
127 /* KEEP IT IN SYNC WITH src/xbt_sg_thread.c::struct s_xbt_sem */
131 /******************************* Networking ***********************************/
133 /** @brief Rendez-vous point datatype */
134 typedef struct s_smx_rvpoint {
138 xbt_fifo_t comm_fifo;
142 typedef struct s_smx_comm {
145 smx_comm_type_t type; /* Type of the communication (comm_send,comm_recv) */
146 smx_rdv_t rdv; /* Rendez-vous where the comm is queued */
147 smx_sem_t sem; /* Semaphore associated to the surf simulation */
148 int refcount; /* Number of processes involved in the cond */
150 /* Surf action data */
151 smx_process_t src_proc;
152 smx_process_t dst_proc;
153 smx_action_t src_timeout;
154 smx_action_t dst_timeout;
159 /* Data to be transfered */
162 size_t src_buff_size;
163 size_t *dst_buff_size;
164 void *data; /* User data associated to communication */
167 void SIMIX_network_copy_data(smx_comm_t comm);
168 smx_comm_t SIMIX_communication_new(smx_comm_type_t type);
169 static inline void SIMIX_communication_use(smx_comm_t comm);
170 static inline void SIMIX_communication_wait_for_completion(smx_comm_t comm, double timeout);
171 static inline void SIMIX_rdv_push(smx_rdv_t rdv, smx_comm_t comm);
172 static inline void SIMIX_rdv_remove(smx_rdv_t rdv, smx_comm_t comm);
174 /********************************* Action *************************************/
176 typedef enum {ready, ongoing, done, failed} smx_action_state_t;
178 /** @brief Action datatype
179 @ingroup m_datatypes_management_details */
180 typedef struct s_smx_action {
181 char *name; /**< @brief action name if any */
182 xbt_fifo_t cond_list; /*< conditional variables that must be signaled when the action finish. */
183 xbt_fifo_t sem_list; /*< semaphores that must be signaled when the action finish. */
184 void *data; /**< @brief user data */
185 int refcount; /**< @brief reference counter */
186 surf_action_t surf_action; /* SURF modeling of computation */
189 long long int counter; /* simix action unique identifier for instrumentation */
190 char *category; /* simix action category for instrumentation */
194 /************************** Configuration support *****************************/
196 extern int _simix_init_status; /* 0: beginning of time; FIXME: KILLME ?
197 1: pre-inited (cfg_set created);
198 2: inited (running) */
200 #define SIMIX_CHECK_HOST() xbt_assert0(surf_workstation_model->extension.workstation. \
201 get_state(SIMIX_host_self()->host)==SURF_RESOURCE_ON,\
202 "Host failed, you cannot call this function.")
204 smx_host_t __SIMIX_host_create(const char *name, void *workstation, void *data);
205 void __SIMIX_host_destroy(void *host);
206 void __SIMIX_cond_wait(smx_cond_t cond);
207 void __SIMIX_cond_display_actions(smx_cond_t cond);
208 void __SIMIX_action_display_conditions(smx_action_t action);
210 /******************************** Context *************************************/
212 /* The following function pointer types describe the interface that any context
213 factory should implement */
215 typedef smx_context_t (*smx_pfn_context_factory_create_context_t)
216 (xbt_main_func_t, int, char**, void_f_pvoid_t, void*);
217 typedef int (*smx_pfn_context_factory_finalize_t) (smx_context_factory_t*);
218 typedef void (*smx_pfn_context_free_t) (smx_context_t);
219 typedef void (*smx_pfn_context_start_t) (smx_context_t);
220 typedef void (*smx_pfn_context_stop_t) (smx_context_t);
221 typedef void (*smx_pfn_context_suspend_t) (smx_context_t context);
222 typedef void (*smx_pfn_context_resume_t) (smx_context_t new_context);
224 /* interface of the context factories */
225 typedef struct s_smx_context_factory {
226 smx_pfn_context_factory_create_context_t create_context;
227 smx_pfn_context_factory_finalize_t finalize;
228 smx_pfn_context_free_t free;
229 smx_pfn_context_stop_t stop;
230 smx_pfn_context_suspend_t suspend;
231 smx_pfn_context_resume_t resume;
233 } s_smx_context_factory_t;
236 void SIMIX_context_mod_init(void);
238 void SIMIX_context_mod_exit(void);
240 /* Selects a context factory associated with the name specified by the parameter name.
241 * If successful the function returns 0. Otherwise the function returns the error code.
243 int SIMIX_context_select_factory(const char *name);
245 /* Initializes a context factory from the name specified by the parameter name.
246 * If the factory cannot be found, an exception is raised.
248 void SIMIX_context_init_factory_by_name(smx_context_factory_t * factory, const char *name);
250 /* All factories init */
251 void SIMIX_ctx_thread_factory_init(smx_context_factory_t * factory);
253 void SIMIX_ctx_sysv_factory_init(smx_context_factory_t * factory);
254 void SIMIX_ctx_lua_factory_init(smx_context_factory_t * factory);
257 void SIMIX_ctx_java_factory_init(smx_context_factory_t * factory);
259 /* ****************************** */
260 /* context manipulation functions */
261 /* ****************************** */
263 /* Scenario for the end of a context:
265 * CASE 1: death after end of the main function
266 * the context_wrapper, called internally by the context module, calls
267 * SIMIX_context_stop after user code stops, smx_context_stop calls user
268 * cleanup_func if any (in context settings), add current process to trashbin
269 * and yields back to maestro.
270 * From time to time, maestro calls SIMIX_context_empty_trash, which destroy
271 * all the process and context data structures, and frees the memory
273 * CASE 2: brutal death
274 * SIMIX_process_kill (from any process) set process->iwannadie = 1 and then
275 * schedules the process. Then the process is awaken in the middle of the
276 * SIMIX_process_yield function, and at the end of it, it checks that
277 * iwannadie == 1, and call SIMIX_context_stop(same than first case afterward)
281 * \brief creates a new context for a user level process
282 * \param code a main function
283 * \param argc the number of arguments of the main function
284 * \param argv the vector of arguments of the main function
285 * \param cleanup_func the function to call when the context stops
286 * \param cleanup_arg the argument of the cleanup_func function
288 static inline smx_context_t SIMIX_context_new(xbt_main_func_t code, int argc,
290 void_f_pvoid_t cleanup_func,
293 return (*(simix_global->context_factory->create_context))
294 (code, argc, argv, cleanup_func, cleanup_arg);
298 * \brief destroy a context
299 * \param context the context to destroy
300 * Argument must be stopped first -- runs in maestro context
302 static inline void SIMIX_context_free(smx_context_t context) {
303 (*(simix_global->context_factory->free)) (context);
307 * \brief stops the execution of a context
308 * \param context to stop
310 static inline void SIMIX_context_stop(smx_context_t context) {
311 (*(simix_global->context_factory->stop)) (context);
315 \brief resumes the execution of a context
316 \param old_context the actual context from which is resuming
317 \param new_context the context to resume
319 static inline void SIMIX_context_resume(smx_context_t new_context)
321 (*(simix_global->context_factory->resume)) (new_context);
325 \brief suspends a context and return the control back to the one which
327 \param context the context to be suspended (it must be the running one)
329 static inline void SIMIX_context_suspend(smx_context_t context)
331 (*(simix_global->context_factory->suspend)) (context);