1 /* Copyright (c) 2006, 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 SIMDAG_PRIVATE_H
8 #define SIMDAG_PRIVATE_H
11 #include "xbt/dynar.h"
13 #include "simdag/simdag.h"
14 #include "simdag/datatypes.h"
15 #include "surf/surf.h"
17 #include "xbt/mallocator.h"
20 #define SD_INITIALISED() (sd_global != NULL)
21 #define SD_CHECK_INIT_DONE() xbt_assert(SD_INITIALISED(), "Call SD_init() first");
23 /* Global variables */
25 typedef struct SD_global {
26 SD_workstation_t *workstation_list; /* array of workstations, created only if
27 necessary in SD_workstation_get_list */
28 SD_link_t *link_list; /* array of links, created only if
29 necessary in SD_link_get_list */
30 SD_link_t *recyclable_route; /* array returned by SD_route_get_list
31 and mallocated only once */
33 xbt_mallocator_t task_mallocator; /* to not remalloc new tasks */
35 int watch_point_reached; /* has a task just reached a watch point? */
38 xbt_swag_t not_scheduled_task_set;
39 xbt_swag_t schedulable_task_set;
40 xbt_swag_t scheduled_task_set;
41 xbt_swag_t runnable_task_set;
42 xbt_swag_t in_fifo_task_set;
43 xbt_swag_t running_task_set;
44 xbt_swag_t done_task_set;
45 xbt_swag_t failed_task_set;
47 xbt_swag_t return_set;
50 } s_SD_global_t, *SD_global_t;
52 extern SD_global_t sd_global;
55 typedef struct SD_link {
56 void *surf_link; /* surf object */
57 void *data; /* user data */
58 e_SD_link_sharing_policy_t sharing_policy;
62 typedef struct SD_workstation {
63 void *surf_workstation; /* surf object */
64 void *data; /* user data */
65 e_SD_workstation_access_mode_t access_mode;
67 xbt_fifo_t task_fifo; /* only used in sequential mode */
68 SD_task_t current_task; /* only used in sequential mode */
72 typedef struct SD_task {
73 s_xbt_swag_hookup_t state_hookup;
74 s_xbt_swag_hookup_t return_hookup;
76 e_SD_task_state_t state;
77 void *data; /* user data */
84 surf_action_t surf_action;
85 unsigned short watch_points; /* bit field xor()ed with masks */
87 int fifo_checked; /* used by SD_task_just_done to make sure we evaluate
89 int marked; /* used to check if the task DAG has some cycle*/
92 xbt_dynar_t tasks_before;
93 xbt_dynar_t tasks_after;
94 unsigned int unsatisfied_dependencies;
95 unsigned int is_not_ready;
97 /* scheduling parameters (only exist in state SD_SCHEDULED) */
99 SD_workstation_t *workstation_list; /* surf workstations */
100 double *computation_amount;
101 double *communication_amount;
105 char *category; /* sd task category for instrumentation */
109 /* Task dependencies */
110 typedef struct SD_dependency {
115 /* src must be finished before dst can start */
116 } s_SD_dependency_t, *SD_dependency_t;
118 /* SimDag private functions */
119 XBT_PUBLIC(xbt_swag_t) SD_simulate_swag(double how_long); /* could be public, but you need to see the internals of the SD_task_t to use it */
122 SD_link_t __SD_link_create(void *surf_link, void *data);
123 void __SD_link_destroy(void *link);
125 SD_workstation_t __SD_workstation_create(void *surf_workstation,
127 void __SD_workstation_destroy(void *workstation);
128 int __SD_workstation_is_busy(SD_workstation_t workstation);
130 void __SD_task_set_state(SD_task_t task, e_SD_task_state_t new_state);
131 void __SD_task_really_run(SD_task_t task);
132 int __SD_task_try_to_run(SD_task_t task);
133 void __SD_task_just_done(SD_task_t task);
134 bool acyclic_graph_detail(xbt_dynar_t dag);
136 /* Task mallocator functions */
137 void* SD_task_new_f(void);
138 void SD_task_recycle_f(void *t);
139 void SD_task_free_f(void *t);
141 /* Functions to test if the task is in a given state. */
143 /* Returns whether the given task is scheduled or runnable. */
144 static XBT_INLINE int __SD_task_is_scheduled_or_runnable(SD_task_t task)
146 return task->state_set == sd_global->scheduled_task_set ||
147 task->state_set == sd_global->runnable_task_set;
150 /* Returns whether the given task is scheduled or runnable. */
151 static XBT_INLINE int __SD_task_is_schedulable_or_done(SD_task_t task)
153 return task->state_set == sd_global->schedulable_task_set ||
154 task->state_set == sd_global->done_task_set;
157 /* Returns whether the state of the given task is SD_NOT_SCHEDULED. */
158 static XBT_INLINE int __SD_task_is_not_scheduled(SD_task_t task)
160 return task->state_set == sd_global->not_scheduled_task_set;
163 /* Returns whether the state of the given task is SD_SCHEDULED. */
164 static XBT_INLINE int __SD_task_is_schedulable(SD_task_t task)
166 return task->state_set == sd_global->schedulable_task_set;
169 /* Returns whether the state of the given task is SD_SCHEDULED. */
170 static XBT_INLINE int __SD_task_is_scheduled(SD_task_t task)
172 return task->state_set == sd_global->scheduled_task_set;
175 /* Returns whether the state of the given task is SD_RUNNABLE. */
176 static XBT_INLINE int __SD_task_is_runnable(SD_task_t task)
178 return task->state_set == sd_global->runnable_task_set;
181 /* Returns whether the state of the given task is SD_IN_FIFO. */
182 static XBT_INLINE int __SD_task_is_in_fifo(SD_task_t task)
184 return task->state_set == sd_global->in_fifo_task_set;
187 /* Returns whether the state of the given task is SD_RUNNABLE or SD_IN_FIFO. */
188 static XBT_INLINE int __SD_task_is_runnable_or_in_fifo(SD_task_t task)
190 return task->state_set == sd_global->runnable_task_set ||
191 task->state_set == sd_global->in_fifo_task_set;
194 /* Returns whether the state of the given task is SD_RUNNING. */
195 static XBT_INLINE int __SD_task_is_running(SD_task_t task)
197 return task->state_set == sd_global->running_task_set;