+/* Authors: Arnaud Legrand */
+
+/* This program is free software; you can redistribute it and/or modify it
+ under the terms of the license (GNU LGPL) which comes with this package. */
+
+
+#ifndef _SURF_SURF_H
+#define _SURF_SURF_H
+
+#include "xbt/swag.h"
+#include "xbt/heap.h" /* for xbt_heap_float_t only */
+#include "surf/maxmin.h" /* for xbt_maxmin_float_t only */
+
+/* Actions and resources are higly connected structures... */
+typedef struct surf_action *surf_action_t;
+typedef struct surf_resource *surf_resource_t;
+
+/*****************/
+/* Action object */
+/*****************/
+typedef enum {
+ SURF_ACTION_READY = 0, /* Ready */
+ SURF_ACTION_RUNNING, /* Running */
+ SURF_ACTION_FAILED, /* Task Failure */
+ SURF_ACTION_DONE, /* Completed */
+ SURF_ACTION_NOT_IN_THE_SYSTEM /* Not in the system anymore. Why did you ask ? */
+} e_surf_action_state_t;
+
+/* Never create s_surf_action_t by yourself !!!! */
+/* Use action_new from the corresponding resource */
+typedef struct surf_action {
+ s_xbt_swag_hookup_t state_hookup;
+ xbt_swag_t state_set;
+ xbt_maxmin_float_t cost; /* cost */
+ xbt_maxmin_float_t remains; /* How much of that cost remains to
+ * be done in the currently running task */
+ xbt_heap_float_t start; /* start time */
+ xbt_heap_float_t finish; /* finish time : this is modified during the run
+ * and fluctuates until the task is completed */
+ void *callback; /* for your convenience */
+ surf_resource_t resource_type;
+} s_surf_action_t;
+
+/***************************/
+/* Generic resource object */
+/***************************/
+typedef struct surf_resource {
+ void (*parse_file)(const char *file);
+ void *(*name_service)(const char *name);
+
+ surf_action_t (*action_new)(void *callback);
+ e_surf_action_state_t (*action_get_state)(surf_action_t action);
+ void (*action_free)(surf_action_t * action); /* Call it when you're done with this action */
+ void (*action_cancel)(surf_action_t action); /* remove the variables from the linear system if needed */
+ void (*action_recycle)(surf_action_t action); /* More efficient than free/new */
+ void (*action_change_state)(surf_action_t action, e_surf_action_state_t state);
+
+ xbt_heap_float_t (*share_resources)(void); /* Share the resources to the
+ actions and return the potential
+ next action termination */
+ void (*solve)(xbt_heap_float_t date); /* Advance time to "date" and update
+ the actions' state*/
+} s_surf_resource_t;
+
+/**************************************/
+/* Implementations of resource object */
+/**************************************/
+/* Host resource */
+typedef enum {
+ SURF_HOST_ON = 1, /* Ready */
+ SURF_HOST_OFF = 0, /* Running */
+} e_surf_host_state_t;
+
+typedef struct surf_host_resource {
+ s_surf_resource_t resource;
+ void (*execute)(void *host, xbt_maxmin_float_t size, surf_action_t action);
+ e_surf_host_state_t (*get_state)(void *host);
+} s_surf_host_resource_t, *surf_host_resource_t;
+extern surf_host_resource_t surf_host_resource;
+
+/* Network resource */
+typedef struct surf_network_resource {
+ s_surf_resource_t resource;
+ surf_action_t (*communicate)(void *src, void *dst, xbt_maxmin_float_t size,
+ surf_action_t action);
+} s_surf_network_resource_t, surf_network_resource_t;
+extern surf_network_resource_t surf_network_resource;
+
+/* Timer resource */
+typedef struct surf_timer_resource {
+ s_surf_resource_t resource;
+ surf_action_t (*wait)(void *host, void *dst, xbt_maxmin_float_t size,
+ surf_action_t surf);
+} s_surf_timer_resource_t, surf_timer_resource_t;
+extern surf_timer_resource_t surf_timer_resource;
+
+/*******************************************/
+/*** SURF Globals **************************/
+/*******************************************/
+typedef struct surf_global {
+ xbt_swag_t ready_action_set;
+ xbt_swag_t running_action_set;
+ xbt_swag_t failed_action_set;
+ xbt_swag_t done_action_set;
+} s_surf_global_t;
+/* The main function */
+extern s_surf_global_t surf_global;
+
+void surf_init(void); /* initialize all resource objects */
+xbt_heap_float_t surf_solve(void); /* returns the next date */
+
+#endif /* _SURF_SURF_H */