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Merging changes done by Steven, Samuel and Luka, regarding simulation of StarPU-MPI
[simgrid.git] / src / simix / smx_private.h
1 /* Copyright (c) 2007-2010, 2012-2015. The SimGrid Team.
2  * All rights reserved.                                                     */
3
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. */
6
7 #ifndef _SIMIX_PRIVATE_H
8 #define _SIMIX_PRIVATE_H
9
10 #include "simgrid/simix.h"
11 #include "surf/surf.h"
12 #include "xbt/base.h"
13 #include "xbt/fifo.h"
14 #include "xbt/swag.h"
15 #include "xbt/dict.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"
28
29 #ifdef __cplusplus
30
31 #include <simgrid/simix.hpp>
32
33 namespace simgrid {
34 namespace simix {
35
36 /* Hack: let msg load directly the right factory
37  *
38  * This is a factory of factory! How nice is this?
39  */
40 typedef ContextFactory* (*ContextFactoryInitializer)(void);
41 XBT_PUBLIC_DATA(ContextFactoryInitializer) factory_initializer;
42
43 }
44 }
45
46 typedef simgrid::simix::ContextFactory *smx_context_factory_t;
47
48 #else
49
50 typedef struct s_smx_context_factory *smx_context_factory_t;
51
52 #endif
53
54 SG_BEGIN_DECL()
55
56 /* Define only for SimGrid benchmarking purposes */
57 //#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 */
58 //#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). */
59 //#define ADAPTIVE_THRESHOLD    /* this is to enable the adaptive threshold algorithm in raw contexts*/
60 //#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)*/
61
62 #ifdef TIME_BENCH_PER_SR
63 XBT_PRIVATE void smx_ctx_raw_new_sr(void);
64 #endif
65
66 /********************************** Simix Global ******************************/
67 typedef struct s_smx_global {
68   smx_context_factory_t context_factory;
69   xbt_dynar_t process_to_run;
70   xbt_dynar_t process_that_ran;
71   xbt_swag_t process_list;
72   xbt_swag_t process_to_destroy;
73   smx_process_t maestro_process;
74   xbt_dict_t registered_functions;
75   smx_creation_func_t create_process_function;
76   void_pfn_smxprocess_t kill_process_function;
77   /** Callback used when killing a SMX_process */
78   void_pfn_smxprocess_t cleanup_process_function;
79   xbt_mallocator_t synchro_mallocator;
80   void_pfn_sghost_t autorestart;
81
82 #ifdef TIME_BENCH_AMDAHL
83   xbt_os_timer_t timer_seq; /* used to bench the sequential and parallel parts of the simulation, if requested to */
84   xbt_os_timer_t timer_par;
85 #endif
86
87   xbt_os_mutex_t mutex;
88 } s_smx_global_t, *smx_global_t;
89
90 XBT_PUBLIC_DATA(smx_global_t) simix_global;
91 extern XBT_PRIVATE unsigned long simix_process_maxpid;
92
93 XBT_PUBLIC(void) SIMIX_clean(void);
94
95 /******************************** Exceptions *********************************/
96 /** @brief Ask to the provided simix process to raise the provided exception */
97 #define SMX_EXCEPTION(issuer, cat, val, msg)                            \
98   if (1) {                                                              \
99     smx_process_t _smx_throw_issuer = (issuer); /* evaluate only once */\
100     THROW_PREPARE(_smx_throw_issuer->running_ctx, (cat), (val), xbt_strdup(msg)); \
101     _smx_throw_issuer->doexception = 1;                                 \
102   } else ((void)0)
103
104 #define SMX_THROW() RETHROW
105
106 /* ******************************** File ************************************ */
107 typedef struct s_smx_file {
108   surf_file_t surf_file;
109   void* data;                   /**< @brief user data */
110 } s_smx_file_t;
111
112 /********************************* synchro *************************************/
113
114 typedef enum {
115   SIMIX_SYNC_EXECUTE,
116   SIMIX_SYNC_PARALLEL_EXECUTE,
117   SIMIX_SYNC_COMMUNICATE,
118   SIMIX_SYNC_JOIN,
119   SIMIX_SYNC_SLEEP,
120   SIMIX_SYNC_SYNCHRO,
121   SIMIX_SYNC_IO,
122 } e_smx_synchro_type_t;
123
124 typedef enum {
125   SIMIX_COMM_SEND,
126   SIMIX_COMM_RECEIVE,
127   SIMIX_COMM_READY,
128   SIMIX_COMM_DONE
129 } e_smx_comm_type_t;
130
131 typedef enum {
132   SIMIX_IO_OPEN,
133   SIMIX_IO_WRITE,
134   SIMIX_IO_READ,
135   SIMIX_IO_STAT
136 } e_smx_io_type_t;
137
138 /** @brief synchro datatype */
139 typedef struct s_smx_synchro {
140
141   e_smx_synchro_type_t type;          /* Type of SIMIX synchro */
142   e_smx_state_t state;               /* State of the synchro */
143   char *name;                        /* synchro name if any */
144   xbt_fifo_t simcalls;               /* List of simcalls waiting for this synchro */
145
146   /* Data specific to each synchro type */
147   union {
148
149     struct {
150       sg_host_t host;                /* The host where the execution takes place */
151       surf_action_t surf_exec;        /* The Surf execution action encapsulated */
152     } execution; /* Possibly parallel execution */
153
154     struct {
155       e_smx_comm_type_t type;         /* Type of the communication (SIMIX_COMM_SEND or SIMIX_COMM_RECEIVE) */
156       smx_rdv_t rdv;                  /* Rendez-vous where the comm is queued */
157
158 #ifdef HAVE_MC
159       smx_rdv_t rdv_cpy;              /* Copy of the rendez-vous where the comm is queued, MC needs it for DPOR
160                                          (comm.rdv set to NULL when the communication is removed from the mailbox
161                                          (used as garbage collector)) */
162 #endif
163       int refcount;                   /* Number of processes involved in the cond */
164       int detached;                   /* If detached or not */
165
166       void (*clean_fun)(void*);       /* Function to clean the detached src_buf if something goes wrong */
167       int (*match_fun)(void*,void*,smx_synchro_t);  /* Filter function used by the other side. It is used when
168                                          looking if a given communication matches my needs. For that, myself must match the
169                                          expectations of the other side, too. See  */
170       void (*copy_data_fun) (smx_synchro_t, void*, size_t);
171
172       /* Surf action data */
173       surf_action_t surf_comm;        /* The Surf communication action encapsulated */
174       surf_action_t src_timeout;      /* Surf's actions to instrument the timeouts */
175       surf_action_t dst_timeout;      /* Surf's actions to instrument the timeouts */
176       smx_process_t src_proc;
177       smx_process_t dst_proc;
178       double rate;
179       double task_size;
180
181       /* Data to be transfered */
182       void *src_buff;
183       void *dst_buff;
184       size_t src_buff_size;
185       size_t *dst_buff_size;
186       unsigned copied:1;              /* whether the data were already copied */
187
188       void* src_data;                 /* User data associated to communication */
189       void* dst_data;
190     } comm;
191
192     struct {
193       sg_host_t host;                /* The host that is sleeping */
194       surf_action_t surf_sleep;       /* The Surf sleeping action encapsulated */
195     } sleep;
196
197     struct {
198       surf_action_t sleep;
199     } synchro;
200
201     struct {
202       sg_host_t host;
203       surf_action_t surf_io;
204     } io;
205   };
206
207 #ifdef HAVE_LATENCY_BOUND_TRACKING
208   int latency_limited;
209 #endif
210
211   char *category;                     /* simix action category for instrumentation */
212 } s_smx_synchro_t;
213
214 XBT_PRIVATE void SIMIX_context_mod_init(void);
215 XBT_PRIVATE void SIMIX_context_mod_exit(void);
216
217 smx_context_t SIMIX_context_new(
218   xbt_main_func_t code, int argc, char **argv,
219   void_pfn_smxprocess_t cleanup_func,
220   smx_process_t simix_process);
221
222 #ifndef WIN32
223 XBT_PUBLIC_DATA(char sigsegv_stack[SIGSTKSZ]);
224 #endif
225
226 /* We are using the bottom of the stack to save some information, like the
227  * valgrind_stack_id. Define smx_context_usable_stack_size to give the remaining
228  * size for the stack. */
229 #ifdef HAVE_VALGRIND_VALGRIND_H
230 # define smx_context_usable_stack_size                                  \
231   (smx_context_stack_size - sizeof(unsigned int)) /* for valgrind_stack_id */
232 #else
233 # define smx_context_usable_stack_size smx_context_stack_size
234 #endif
235
236 XBT_PRIVATE void *SIMIX_context_stack_new(void);
237 XBT_PRIVATE void SIMIX_context_stack_delete(void *stack);
238
239 XBT_PRIVATE void SIMIX_context_set_current(smx_context_t context);
240 XBT_PRIVATE smx_context_t SIMIX_context_get_current(void);
241
242 /* ****************************** */
243 /* context manipulation functions */
244 /* ****************************** */
245
246 XBT_PUBLIC(int) SIMIX_process_get_maxpid(void);
247
248 XBT_PRIVATE void SIMIX_post_create_environment(void);
249
250 // FIXME, Dirty hack for SMPI+MSG
251 XBT_PRIVATE void SIMIX_process_set_cleanup_function(
252   smx_process_t process, void_pfn_smxprocess_t cleanup);
253
254 SG_END_DECL()
255
256 #endif