diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/solver.c | 58 |
1 files changed, 49 insertions, 9 deletions
diff --git a/src/solver.c b/src/solver.c index 933c42f..bffb1f1 100644 --- a/src/solver.c +++ b/src/solver.c @@ -9,6 +9,7 @@ * by the Free Software Foundation. See http://www.gnu.org/ for details. */ +#include <stdint.h> #include "apk_defines.h" #include "apk_database.h" #include "apk_package.h" @@ -34,9 +35,22 @@ #endif struct apk_score { - unsigned short conflicts; - unsigned short non_preferred_actions; - unsigned short preference; + union { + struct { +#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + unsigned short preference; + unsigned short non_preferred_actions; + unsigned int conflicts; +#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + unsigned int conflicts; + unsigned short non_preferred_actions; + unsigned short preference; +#else +#error Unknown endianess. +#endif + }; + uint64_t score; + }; }; #define SCORE_FMT "{%d/%d/%d}" @@ -153,6 +167,7 @@ static solver_result_t push_decision(struct apk_solver_state *ss, int branching_point, int topology_position); +#if 0 static void addscore(struct apk_score *a, struct apk_score *b) { a->conflicts += b->conflicts; @@ -206,6 +221,33 @@ static inline int cmpscore2(struct apk_score *a1, struct apk_score *a2, struct a return 0; } +#else +static void addscore(struct apk_score *a, struct apk_score *b) +{ + a->score += b->score; +} + +static void subscore(struct apk_score *a, struct apk_score *b) +{ + a->score -= b->score; +} + +static inline int cmpscore(struct apk_score *a, struct apk_score *b) +{ + if (a->score < b->score) return -1; + if (a->score > b->score) return 1; + return 0; +} + +static inline int cmpscore2(struct apk_score *a1, struct apk_score *a2, struct apk_score *b) +{ + struct apk_score a; + a.score = a1->score + a2->score; + if (a.score < b->score) return -1; + if (a.score > b->score) return 1; + return 0; +} +#endif static struct apk_name *decision_to_name(struct apk_decision *d) { @@ -665,7 +707,7 @@ static int update_name_state(struct apk_solver_state *ss, struct apk_name *name) return ns->chosen != NULL; subscore(&ss->minimum_penalty, &ns->minimum_penalty); - ns->minimum_penalty = (struct apk_score) { 0, 0 }; + ns->minimum_penalty = (struct apk_score) { .score = 0 }; ns->name_touched = 1; @@ -865,7 +907,7 @@ static solver_result_t apply_decision(struct apk_solver_state *ss, if (d->type == DECISION_ASSIGN) { subscore(&ss->minimum_penalty, &ns->minimum_penalty); - ns->minimum_penalty = (struct apk_score) { 0 }; + ns->minimum_penalty = (struct apk_score) { .score = 0 }; ns->locked = 1; get_topology_score(ss, ns, pkg, &score); @@ -901,7 +943,7 @@ static solver_result_t apply_decision(struct apk_solver_state *ss, if (d->type == DECISION_ASSIGN) { subscore(&ss->minimum_penalty, &ns->minimum_penalty); - ns->minimum_penalty = (struct apk_score) { 0 }; + ns->minimum_penalty = (struct apk_score) { .score = 0 }; get_unassigned_score(name, &score); addscore(&ss->score, &score); @@ -1515,9 +1557,7 @@ int apk_solver_solve(struct apk_database *db, ss->db = db; ss->solver_flags = solver_flags; ss->topology_position = -1; - ss->best_score = (struct apk_score){ - .conflicts = -1, - }; + ss->best_score = (struct apk_score){ .conflicts = -1 }; list_init(&ss->unsolved_list_head); for (i = 0; i < world->num; i++) |