X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/509304ee1435b62cd49eb9071995fab468f68f58..3f20dab4d9cff3906de20b1e7ffdcd54827b7c28:/src/include/surf/maxmin.h diff --git a/src/include/surf/maxmin.h b/src/include/surf/maxmin.h index 1d76633441..5ebf9da119 100644 --- a/src/include/surf/maxmin.h +++ b/src/include/surf/maxmin.h @@ -1,44 +1,128 @@ -/* Authors: Arnaud Legrand */ +/* 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. */ + * under the terms of the license (GNU LGPL) which comes with this package. */ #ifndef _SURF_MAXMIN_H #define _SURF_MAXMIN_H -typedef long double xbt_maxmin_float_t; -#define XBT_MAXMIN_FLOAT_T "%Lg" /* for printing purposes */ +#include +#include "portable.h" +#include "xbt/misc.h" +#include "surf/datatypes.h" -typedef struct lmm_variable *lmm_variable_t; -typedef struct lmm_constraint *lmm_constraint_t; -typedef struct lmm_system *lmm_system_t; +extern double sg_maxmin_precision; +#define MAXMIN_PRECISION sg_maxmin_precision +static XBT_INLINE void double_update(double *variable, double value) +{ + *variable -= value; + if (*variable < MAXMIN_PRECISION) + *variable = 0.0; +} -lmm_system_t lmm_system_new(void); -void lmm_system_free(lmm_system_t sys); +static XBT_INLINE int double_positive(double value) +{ + return (value > MAXMIN_PRECISION); +} + +static XBT_INLINE int double_equals(double value1, double value2) +{ + return (fabs(value1 - value2) < MAXMIN_PRECISION); +} + +XBT_PUBLIC(lmm_system_t) lmm_system_new(int selective_update); +XBT_PUBLIC(void) lmm_system_free(lmm_system_t sys); +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); +int lmm_constraint_is_shared(lmm_constraint_t cnst); -lmm_constraint_t lmm_constraint_new(lmm_system_t sys, void *id, - xbt_maxmin_float_t bound_value); void lmm_constraint_free(lmm_system_t sys, lmm_constraint_t cnst); -lmm_variable_t lmm_variable_new(lmm_system_t sys, void *id, - xbt_maxmin_float_t weight_value, - xbt_maxmin_float_t bound, - int number_of_constraints); +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); -xbt_maxmin_float_t lmm_variable_getvalue(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_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); +#ifdef HAVE_LATENCY_BOUND_TRACKING +XBT_PUBLIC(int) lmm_is_variable_limited_by_latency(lmm_variable_t var); +#endif -void lmm_expand(lmm_system_t sys, lmm_constraint_t cnst, - lmm_variable_t var, xbt_maxmin_float_t value); +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, xbt_maxmin_float_t value); -void lmm_update_variable_bound(lmm_variable_t var, - xbt_maxmin_float_t bound); -void lmm_update_variable_weight(lmm_variable_t var, - xbt_maxmin_float_t weight); -void lmm_update_constraint_bound(lmm_constraint_t cnst, - xbt_maxmin_float_t bound); - -void lmm_solve(lmm_system_t sys); -#endif /* _SURF_MAXMIN_H */ + lmm_variable_t var, double value); +void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var, + 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); + +XBT_PUBLIC(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); + + +XBT_PUBLIC(void) lmm_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. + */ + +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)); + +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); + +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); + +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 */