1 /* Authors: Arnaud Legrand */
3 /* This program is free software; you can redistribute it and/or modify it
4 under the terms of the license (GNU LGPL) which comes with this package. */
11 #include "xbt/heap.h" /* for xbt_heap_float_t only */
12 #include "surf/maxmin.h" /* for xbt_maxmin_float_t only */
14 /* Actions and resources are higly connected structures... */
15 typedef struct surf_action *surf_action_t;
16 typedef struct surf_resource *surf_resource_t;
22 SURF_ACTION_READY = 0, /* Ready */
23 SURF_ACTION_RUNNING, /* Running */
24 SURF_ACTION_FAILED, /* Task Failure */
25 SURF_ACTION_DONE, /* Completed */
26 SURF_ACTION_NOT_IN_THE_SYSTEM /* Not in the system anymore. Why did you ask ? */
27 } e_surf_action_state_t;
29 /* Never create s_surf_action_t by yourself !!!! */
30 /* Use action_new from the corresponding resource */
31 typedef struct surf_action {
32 s_xbt_swag_hookup_t state_hookup;
34 xbt_maxmin_float_t cost; /* cost */
35 xbt_maxmin_float_t remains; /* How much of that cost remains to
36 * be done in the currently running task */
37 xbt_heap_float_t start; /* start time */
38 xbt_heap_float_t finish; /* finish time : this is modified during the run
39 * and fluctuates until the task is completed */
40 void *callback; /* for your convenience */
41 surf_resource_t resource_type;
44 /***************************/
45 /* Generic resource object */
46 /***************************/
47 typedef struct surf_resource {
48 void (*parse_file)(const char *file);
49 void *(*name_service)(const char *name);
51 surf_action_t (*action_new)(void *callback);
52 e_surf_action_state_t (*action_get_state)(surf_action_t action);
53 void (*action_free)(surf_action_t * action); /* Call it when you're done with this action */
54 void (*action_cancel)(surf_action_t action); /* remove the variables from the linear system if needed */
55 void (*action_recycle)(surf_action_t action); /* More efficient than free/new */
56 void (*action_change_state)(surf_action_t action, e_surf_action_state_t state);
58 xbt_heap_float_t (*share_resources)(void); /* Share the resources to the
59 actions and return the potential
60 next action termination */
61 void (*solve)(xbt_heap_float_t date); /* Advance time to "date" and update
65 /**************************************/
66 /* Implementations of resource object */
67 /**************************************/
70 SURF_HOST_ON = 1, /* Ready */
71 SURF_HOST_OFF = 0, /* Running */
72 } e_surf_host_state_t;
74 typedef struct surf_host_resource {
75 s_surf_resource_t resource;
76 void (*execute)(void *host, xbt_maxmin_float_t size, surf_action_t action);
77 e_surf_host_state_t (*get_state)(void *host);
78 } s_surf_host_resource_t, *surf_host_resource_t;
79 extern surf_host_resource_t surf_host_resource;
81 /* Network resource */
82 typedef struct surf_network_resource {
83 s_surf_resource_t resource;
84 surf_action_t (*communicate)(void *src, void *dst, xbt_maxmin_float_t size,
85 surf_action_t action);
86 } s_surf_network_resource_t, surf_network_resource_t;
87 extern surf_network_resource_t surf_network_resource;
90 typedef struct surf_timer_resource {
91 s_surf_resource_t resource;
92 surf_action_t (*wait)(void *host, void *dst, xbt_maxmin_float_t size,
94 } s_surf_timer_resource_t, surf_timer_resource_t;
95 extern surf_timer_resource_t surf_timer_resource;
97 /*******************************************/
98 /*** SURF Globals **************************/
99 /*******************************************/
100 typedef struct surf_global {
101 xbt_swag_t ready_action_set;
102 xbt_swag_t running_action_set;
103 xbt_swag_t failed_action_set;
104 xbt_swag_t done_action_set;
106 /* The main function */
107 extern s_surf_global_t surf_global;
109 void surf_init(void); /* initialize all resource objects */
110 xbt_heap_float_t surf_solve(void); /* returns the next date */
112 #endif /* _SURF_SURF_H */