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 /* Global variables */
22 typedef struct SD_global {
23 SD_workstation_t *workstation_list; /* array of workstations, created only if
24 necessary in SD_workstation_get_list */
25 SD_link_t *link_list; /* array of links, created only if
26 necessary in SD_link_get_list */
27 SD_link_t *recyclable_route; /* array returned by SD_route_get_list
28 and mallocated only once */
30 xbt_mallocator_t task_mallocator; /* to not remalloc new tasks */
32 int watch_point_reached; /* has a task just reached a watch point? */
35 xbt_swag_t not_scheduled_task_set;
36 xbt_swag_t schedulable_task_set;
37 xbt_swag_t scheduled_task_set;
38 xbt_swag_t runnable_task_set;
39 xbt_swag_t in_fifo_task_set;
40 xbt_swag_t running_task_set;
41 xbt_swag_t done_task_set;
42 xbt_swag_t failed_task_set;
44 xbt_swag_t return_set;
47 } s_SD_global_t, *SD_global_t;
49 extern SD_global_t sd_global;
52 typedef struct SD_link {
53 void *surf_link; /* surf object */
54 void *data; /* user data */
55 e_SD_link_sharing_policy_t sharing_policy;
59 typedef struct SD_workstation {
60 void *surf_workstation; /* surf object */
61 void *data; /* user data */
62 e_SD_workstation_access_mode_t access_mode;
64 xbt_fifo_t task_fifo; /* only used in sequential mode */
65 SD_task_t current_task; /* only used in sequential mode */
69 typedef struct SD_task {
70 s_xbt_swag_hookup_t state_hookup;
71 s_xbt_swag_hookup_t return_hookup;
73 e_SD_task_state_t state;
74 void *data; /* user data */
81 surf_action_t surf_action;
82 unsigned short watch_points; /* bit field xor()ed with masks */
84 int fifo_checked; /* used by SD_task_just_done to make sure we evaluate
86 int marked; /* used to check if the task DAG has some cycle*/
89 xbt_dynar_t tasks_before;
90 xbt_dynar_t tasks_after;
91 unsigned int unsatisfied_dependencies;
92 unsigned int is_not_ready;
94 /* scheduling parameters (only exist in state SD_SCHEDULED) */
96 SD_workstation_t *workstation_list; /* surf workstations */
97 double *computation_amount;
98 double *communication_amount;
102 char *category; /* sd task category for instrumentation */
106 /* Task dependencies */
107 typedef struct SD_dependency {
112 /* src must be finished before dst can start */
113 } s_SD_dependency_t, *SD_dependency_t;
115 /* SimDag private functions */
116 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 */
119 SD_link_t __SD_link_create(void *surf_link, void *data);
120 void __SD_link_destroy(void *link);
122 SD_workstation_t __SD_workstation_create(void *surf_workstation,
124 void __SD_workstation_destroy(void *workstation);
125 int __SD_workstation_is_busy(SD_workstation_t workstation);
127 void __SD_task_set_state(SD_task_t task, e_SD_task_state_t new_state);
128 void __SD_task_really_run(SD_task_t task);
129 int __SD_task_try_to_run(SD_task_t task);
130 void __SD_task_just_done(SD_task_t task);
131 bool acyclic_graph_detail(xbt_dynar_t dag);
133 /* Task mallocator functions */
134 void* SD_task_new_f(void);
135 void SD_task_recycle_f(void *t);
136 void SD_task_free_f(void *t);
138 /* Functions to test if the task is in a given state. */
140 /* Returns whether the given task is scheduled or runnable. */
141 static XBT_INLINE int __SD_task_is_scheduled_or_runnable(SD_task_t task)
143 return task->state_set == sd_global->scheduled_task_set ||
144 task->state_set == sd_global->runnable_task_set;
147 /* Returns whether the given task is scheduled or runnable. */
148 static XBT_INLINE int __SD_task_is_schedulable_or_done(SD_task_t task)
150 return task->state_set == sd_global->schedulable_task_set ||
151 task->state_set == sd_global->done_task_set;
154 /* Returns whether the state of the given task is SD_NOT_SCHEDULED. */
155 static XBT_INLINE int __SD_task_is_not_scheduled(SD_task_t task)
157 return task->state_set == sd_global->not_scheduled_task_set;
160 /* Returns whether the state of the given task is SD_SCHEDULED. */
161 static XBT_INLINE int __SD_task_is_schedulable(SD_task_t task)
163 return task->state_set == sd_global->schedulable_task_set;
166 /* Returns whether the state of the given task is SD_SCHEDULED. */
167 static XBT_INLINE int __SD_task_is_scheduled(SD_task_t task)
169 return task->state_set == sd_global->scheduled_task_set;
172 /* Returns whether the state of the given task is SD_RUNNABLE. */
173 static XBT_INLINE int __SD_task_is_runnable(SD_task_t task)
175 return task->state_set == sd_global->runnable_task_set;
178 /* Returns whether the state of the given task is SD_IN_FIFO. */
179 static XBT_INLINE int __SD_task_is_in_fifo(SD_task_t task)
181 return task->state_set == sd_global->in_fifo_task_set;
184 /* Returns whether the state of the given task is SD_RUNNABLE or SD_IN_FIFO. */
185 static XBT_INLINE int __SD_task_is_runnable_or_in_fifo(SD_task_t task)
187 return task->state_set == sd_global->runnable_task_set ||
188 task->state_set == sd_global->in_fifo_task_set;
191 /* Returns whether the state of the given task is SD_RUNNING. */
192 static XBT_INLINE int __SD_task_is_running(SD_task_t task)
194 return task->state_set == sd_global->running_task_set;