-/* $Id$ */
-
-/* Copyright (c) 2004 Arnaud Legrand. All rights reserved. */
+/* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
/* 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_MAXMIN_H
#define _SURF_MAXMIN_H
+#include <math.h>
+#include "portable.h"
#include "xbt/misc.h"
-#include "portable.h"
-static XBT_INLINE void double_update(double *variable, double value)
+#include "surf/datatypes.h"
+
+#define MAXMIN_PRECISION 1e-9
+static XBT_INLINE void double_update(double *variable, double value)
{
*variable -= value;
- if(*variable< 0.00001) *variable = 0.0;
+ if (*variable < MAXMIN_PRECISION)
+ *variable = 0.0;
+}
+
+static XBT_INLINE int double_positive(double value)
+{
+ return (value > MAXMIN_PRECISION);
}
-typedef struct lmm_variable *lmm_variable_t;
-typedef struct lmm_constraint *lmm_constraint_t;
-typedef struct lmm_system *lmm_system_t;
+static XBT_INLINE int double_equals(double value1, double value2)
+{
+ return (fabs(value1 - value2) < MAXMIN_PRECISION);
+}
XBT_PUBLIC(lmm_system_t) lmm_system_new(void);
XBT_PUBLIC(void) lmm_system_free(lmm_system_t sys);
-void lmm_variable_disable(lmm_system_t sys, lmm_variable_t var);
+ void lmm_variable_disable(lmm_system_t sys, lmm_variable_t var);
XBT_PUBLIC(lmm_constraint_t) lmm_constraint_new(lmm_system_t sys, void *id,
- double bound_value);
-void lmm_constraint_shared(lmm_constraint_t cnst);
+ double bound_value);
+ void lmm_constraint_shared(lmm_constraint_t cnst);
+ int lmm_constraint_is_shared(lmm_constraint_t cnst);
-void lmm_constraint_free(lmm_system_t sys, lmm_constraint_t cnst);
+ void lmm_constraint_free(lmm_system_t sys, lmm_constraint_t cnst);
XBT_PUBLIC(lmm_variable_t) lmm_variable_new(lmm_system_t sys, void *id,
- double weight_value,
- double bound, int number_of_constraints);
-void lmm_variable_free(lmm_system_t sys, lmm_variable_t var);
+ double weight_value,
+ double bound,
+ int number_of_constraints);
+ void lmm_variable_free(lmm_system_t sys, lmm_variable_t var);
XBT_PUBLIC(double) lmm_variable_getvalue(lmm_variable_t var);
-
+XBT_PUBLIC(double) lmm_variable_getbound(lmm_variable_t var);
XBT_PUBLIC(void) lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
- lmm_variable_t var, double value);
-void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
- lmm_variable_t var, double value);
-void lmm_elem_set_value(lmm_system_t sys, lmm_constraint_t cnst,
- lmm_variable_t var, double value);
+ lmm_variable_t var, double value);
+ void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t var, double value);
+ void lmm_elem_set_value(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t var, double value);
-lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
- lmm_variable_t var, int num);
-int lmm_get_number_of_cnst_from_var(lmm_system_t sys, lmm_variable_t var);
-lmm_variable_t lmm_get_var_from_cnst(lmm_system_t sys,
- lmm_constraint_t cnst,
- lmm_variable_t * var);
+ lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
+ lmm_variable_t var, int num);
+ int lmm_get_number_of_cnst_from_var(lmm_system_t sys,
+ lmm_variable_t var);
+ lmm_variable_t lmm_get_var_from_cnst(lmm_system_t sys,
+ lmm_constraint_t cnst,
+ lmm_element_t * elem);
-lmm_constraint_t lmm_get_first_active_constraint(lmm_system_t sys);
-lmm_constraint_t lmm_get_next_active_constraint(lmm_system_t sys, lmm_constraint_t cnst);
+ lmm_constraint_t lmm_get_first_active_constraint(lmm_system_t sys);
+ lmm_constraint_t lmm_get_next_active_constraint(lmm_system_t sys,
+ lmm_constraint_t cnst);
-void *lmm_constraint_id(lmm_constraint_t cnst);
-void *lmm_variable_id(lmm_variable_t var);
+ XBT_PUBLIC(int) lmm_is_variable_limited_by_latency(lmm_variable_t var);
-void lmm_update(lmm_system_t sys, lmm_constraint_t cnst,
- lmm_variable_t var, double value);
-void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
- double bound);
+ void *lmm_constraint_id(lmm_constraint_t cnst);
+ void *lmm_variable_id(lmm_variable_t var);
+ void lmm_update(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t var, double value);
+ void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
+ double bound);
-void lmm_update_variable_latency(lmm_system_t sys, lmm_variable_t var,
- double delta);
+XBT_PUBLIC(void) lmm_update_variable_weight(lmm_system_t sys,
+ lmm_variable_t var,
+ double weight);
+ double lmm_get_variable_weight(lmm_variable_t var);
+XBT_PUBLIC(void) lmm_update_constraint_bound(lmm_system_t sys,
+ lmm_constraint_t cnst,
+ double bound);
-XBT_PUBLIC(void) lmm_update_variable_weight(lmm_system_t sys, lmm_variable_t var,
- double weight);
-double lmm_get_variable_weight(lmm_variable_t var);
-
-void lmm_update_constraint_bound(lmm_system_t sys, lmm_constraint_t cnst,
- double bound);
-
-int lmm_constraint_used(lmm_system_t sys, lmm_constraint_t cnst);
+ int lmm_constraint_used(lmm_system_t sys, lmm_constraint_t cnst);
XBT_PUBLIC(void) lmm_solve(lmm_system_t sys);
-#ifdef HAVE_SDP
-void sdp_solve(lmm_system_t sys);
-#endif /* HAVE_SDP */
-
-void lagrange_solve(lmm_system_t sys);
-
-void lagrange_dicotomi_solve(lmm_system_t sys);
-
-
+XBT_PUBLIC(void) lagrange_solve(lmm_system_t sys);
+XBT_PUBLIC(void) bottleneck_solve(lmm_system_t sys);
/**
* Default functions associated to the chosen protocol. When
* using the lagrangian approach.
*/
-double (* func_f_def ) (lmm_variable_t , double);
-double (* func_fp_def ) (lmm_variable_t , double);
-double (* func_fpi_def ) (lmm_variable_t , double);
-double (* func_fpip_def) (lmm_variable_t , double);
-
+XBT_PUBLIC(void) lmm_set_default_protocol_function(double (*func_f)
+ (lmm_variable_t var, double x),
+ double (*func_fp)
+ (lmm_variable_t var, double x),
+ double (*func_fpi)
+ (lmm_variable_t var, double x));
-void lmm_set_default_protocol_functions(double (* func_f) (lmm_variable_t var, double x),
- double (* func_fp) (lmm_variable_t var, double x),
- double (* func_fpi) (lmm_variable_t var, double x),
- double (* func_fpip) (lmm_variable_t var, double x));
+XBT_PUBLIC(double func_reno_f) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_reno_fp) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_reno_fpi) (lmm_variable_t var, double x);
-double func_reno_f(lmm_variable_t var, double x);
-double func_reno_fp(lmm_variable_t var, double x);
-double func_reno_fpi(lmm_variable_t var, double x);
-double func_reno_fpip(lmm_variable_t var, double x);
+XBT_PUBLIC(double func_reno2_f) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_reno2_fp) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_reno2_fpi) (lmm_variable_t var, double x);
-double func_vegas_f(lmm_variable_t var, double x);
-double func_vegas_fp(lmm_variable_t var, double x);
-double func_vegas_fpi(lmm_variable_t var, double x);
-double func_vegas_fpip(lmm_variable_t var, double x);
+XBT_PUBLIC(double func_vegas_f) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_vegas_fp) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_vegas_fpi) (lmm_variable_t var, double x);
-#endif /* _SURF_MAXMIN_H */
+#endif /* _SURF_MAXMIN_H */
