Message ID | 1427061825-27470-5-git-send-email-emil.l.velikov@gmail.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Sun, 2015-03-22 at 22:03 +0000, Emil Velikov wrote: > Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> > --- > tests/hash.c | 102 +++++++++++++++++++++++++++++++++++------------------------ > 1 file changed, 60 insertions(+), 42 deletions(-) > > diff --git a/tests/hash.c b/tests/hash.c > index 902919f..fa9264a 100644 > --- a/tests/hash.c > +++ b/tests/hash.c > @@ -73,8 +73,8 @@ > > #include "xf86drm.h" > > -#define HASH_SIZE 512 /* Good for about 100 entries */ > - /* If you change this value, you probably > +#define HASH_SIZE 512 /* Good for about 100 entries */ > + /* If you change this value, you probably > have to change the HashHash hashing > function! */ > > @@ -87,9 +87,9 @@ typedef struct HashBucket { > typedef struct HashTable { > unsigned long magic; > unsigned long entries; > - unsigned long hits; /* At top of linked list */ > - unsigned long partials; /* Not at top of linked list */ > - unsigned long misses; /* Not in table */ > + unsigned long hits; /* At top of linked list */ > + unsigned long partials; /* Not at top of linked list */ > + unsigned long misses; /* Not in table */ > HashBucketPtr buckets[HASH_SIZE]; > int p0; > HashBucketPtr p1; > @@ -101,21 +101,25 @@ static int dist[DIST_LIMIT]; > static void clear_dist(void) { > int i; > > - for (i = 0; i < DIST_LIMIT; i++) dist[i] = 0; > + for (i = 0; i < DIST_LIMIT; i++) > + dist[i] = 0; > } > > static int count_entries(HashBucketPtr bucket) > { > - int count = 0; > + int count; > > - for (; bucket; bucket = bucket->next) ++count; > + for (count = 0; bucket; bucket = bucket->next) > + ++count; I personally prefer to initialize early, especially since it's not for-loop iterating variable, but I don't insist. Reviewed-by: Jan Vesely <jan.vesely@rutgers.edu> > return count; > } > > static void update_dist(int count) > { > - if (count >= DIST_LIMIT) ++dist[DIST_LIMIT-1]; > - else ++dist[count]; > + if (count >= DIST_LIMIT) > + ++dist[DIST_LIMIT-1]; > + else > + ++dist[count]; > } > > static void compute_dist(HashTablePtr table) > @@ -124,43 +128,45 @@ static void compute_dist(HashTablePtr table) > HashBucketPtr bucket; > > printf("Entries = %ld, hits = %ld, partials = %ld, misses = %ld\n", > - table->entries, table->hits, table->partials, table->misses); > + table->entries, table->hits, table->partials, table->misses); > clear_dist(); > for (i = 0; i < HASH_SIZE; i++) { > - bucket = table->buckets[i]; > - update_dist(count_entries(bucket)); > + bucket = table->buckets[i]; > + update_dist(count_entries(bucket)); > } > for (i = 0; i < DIST_LIMIT; i++) { > - if (i != DIST_LIMIT-1) printf("%5d %10d\n", i, dist[i]); > - else printf("other %10d\n", dist[i]); > + if (i != DIST_LIMIT-1) > + printf("%5d %10d\n", i, dist[i]); > + else > + printf("other %10d\n", dist[i]); > } > } > > static void check_table(HashTablePtr table, > - unsigned long key, unsigned long value) > + unsigned long key, unsigned long value) > { > unsigned long *retval; > int retcode = drmHashLookup(table, key, (void **)&retval); > > switch (retcode) { > case -1: > - printf("Bad magic = 0x%08lx:" > - " key = %lu, expected = %lu, returned = %lu\n", > - table->magic, key, value, *retval); > - break; > + printf("Bad magic = 0x%08lx:" > + " key = %lu, expected = %lu, returned = %lu\n", > + table->magic, key, value, *retval); > + break; > case 1: > - printf("Not found: key = %lu, expected = %lu, returned = %lu\n", > - key, value, *retval); > - break; > + printf("Not found: key = %lu, expected = %lu, returned = %lu\n", > + key, value, *retval); > + break; > case 0: > - if (value != *retval) > - printf("Bad value: key = %lu, expected = %lu, returned = %lu\n", > - key, value, *retval); > - break; > + if (value != *retval) > + printf("Bad value: key = %lu, expected = %lu, returned = %lu\n", > + key, value, *retval); > + break; > default: > - printf("Bad retcode = %d: key = %lu, expected = %lu, returned = %lu\n", > - retcode, key, value, *retval); > - break; > + printf("Bad retcode = %d: key = %lu, expected = %lu, returned = %lu\n", > + retcode, key, value, *retval); > + break; > } > } > > @@ -171,44 +177,56 @@ int main(void) > > printf("\n***** 256 consecutive integers ****\n"); > table = drmHashCreate(); > - for (i = 0; i < 256; i++) drmHashInsert(table, i, (void *)&i); > - for (i = 0; i < 256; i++) check_table(table, i, i); > + for (i = 0; i < 256; i++) > + drmHashInsert(table, i, (void *)&i); > + for (i = 0; i < 256; i++) > + check_table(table, i, i); > compute_dist(table); > drmHashDestroy(table); > > printf("\n***** 1024 consecutive integers ****\n"); > table = drmHashCreate(); > - for (i = 0; i < 1024; i++) drmHashInsert(table, i, (void *)&i); > - for (i = 0; i < 1024; i++) check_table(table, i, i); > + for (i = 0; i < 1024; i++) > + drmHashInsert(table, i, (void *)&i); > + for (i = 0; i < 1024; i++) > + check_table(table, i, i); > compute_dist(table); > drmHashDestroy(table); > > printf("\n***** 1024 consecutive page addresses (4k pages) ****\n"); > table = drmHashCreate(); > - for (i = 0; i < 1024; i++) drmHashInsert(table, i*4096, (void *)&i); > - for (i = 0; i < 1024; i++) check_table(table, i*4096, i); > + for (i = 0; i < 1024; i++) > + drmHashInsert(table, i*4096, (void *)&i); > + for (i = 0; i < 1024; i++) > + check_table(table, i*4096, i); > compute_dist(table); > drmHashDestroy(table); > > printf("\n***** 1024 random integers ****\n"); > table = drmHashCreate(); > srandom(0xbeefbeef); > - for (i = 0; i < 1024; i++) drmHashInsert(table, random(), (void *)&i); > + for (i = 0; i < 1024; i++) > + drmHashInsert(table, random(), (void *)&i); > srandom(0xbeefbeef); > - for (i = 0; i < 1024; i++) check_table(table, random(), i); > + for (i = 0; i < 1024; i++) > + check_table(table, random(), i); > srandom(0xbeefbeef); > - for (i = 0; i < 1024; i++) check_table(table, random(), i); > + for (i = 0; i < 1024; i++) > + check_table(table, random(), i); > compute_dist(table); > drmHashDestroy(table); > > printf("\n***** 5000 random integers ****\n"); > table = drmHashCreate(); > srandom(0xbeefbeef); > - for (i = 0; i < 5000; i++) drmHashInsert(table, random(), (void *)&i); > + for (i = 0; i < 5000; i++) > + drmHashInsert(table, random(), (void *)&i); > srandom(0xbeefbeef); > - for (i = 0; i < 5000; i++) check_table(table, random(), i); > + for (i = 0; i < 5000; i++) > + check_table(table, random(), i); > srandom(0xbeefbeef); > - for (i = 0; i < 5000; i++) check_table(table, random(), i); > + for (i = 0; i < 5000; i++) > + check_table(table, random(), i); > compute_dist(table); > drmHashDestroy(table); >
diff --git a/tests/hash.c b/tests/hash.c index 902919f..fa9264a 100644 --- a/tests/hash.c +++ b/tests/hash.c @@ -73,8 +73,8 @@ #include "xf86drm.h" -#define HASH_SIZE 512 /* Good for about 100 entries */ - /* If you change this value, you probably +#define HASH_SIZE 512 /* Good for about 100 entries */ + /* If you change this value, you probably have to change the HashHash hashing function! */ @@ -87,9 +87,9 @@ typedef struct HashBucket { typedef struct HashTable { unsigned long magic; unsigned long entries; - unsigned long hits; /* At top of linked list */ - unsigned long partials; /* Not at top of linked list */ - unsigned long misses; /* Not in table */ + unsigned long hits; /* At top of linked list */ + unsigned long partials; /* Not at top of linked list */ + unsigned long misses; /* Not in table */ HashBucketPtr buckets[HASH_SIZE]; int p0; HashBucketPtr p1; @@ -101,21 +101,25 @@ static int dist[DIST_LIMIT]; static void clear_dist(void) { int i; - for (i = 0; i < DIST_LIMIT; i++) dist[i] = 0; + for (i = 0; i < DIST_LIMIT; i++) + dist[i] = 0; } static int count_entries(HashBucketPtr bucket) { - int count = 0; + int count; - for (; bucket; bucket = bucket->next) ++count; + for (count = 0; bucket; bucket = bucket->next) + ++count; return count; } static void update_dist(int count) { - if (count >= DIST_LIMIT) ++dist[DIST_LIMIT-1]; - else ++dist[count]; + if (count >= DIST_LIMIT) + ++dist[DIST_LIMIT-1]; + else + ++dist[count]; } static void compute_dist(HashTablePtr table) @@ -124,43 +128,45 @@ static void compute_dist(HashTablePtr table) HashBucketPtr bucket; printf("Entries = %ld, hits = %ld, partials = %ld, misses = %ld\n", - table->entries, table->hits, table->partials, table->misses); + table->entries, table->hits, table->partials, table->misses); clear_dist(); for (i = 0; i < HASH_SIZE; i++) { - bucket = table->buckets[i]; - update_dist(count_entries(bucket)); + bucket = table->buckets[i]; + update_dist(count_entries(bucket)); } for (i = 0; i < DIST_LIMIT; i++) { - if (i != DIST_LIMIT-1) printf("%5d %10d\n", i, dist[i]); - else printf("other %10d\n", dist[i]); + if (i != DIST_LIMIT-1) + printf("%5d %10d\n", i, dist[i]); + else + printf("other %10d\n", dist[i]); } } static void check_table(HashTablePtr table, - unsigned long key, unsigned long value) + unsigned long key, unsigned long value) { unsigned long *retval; int retcode = drmHashLookup(table, key, (void **)&retval); switch (retcode) { case -1: - printf("Bad magic = 0x%08lx:" - " key = %lu, expected = %lu, returned = %lu\n", - table->magic, key, value, *retval); - break; + printf("Bad magic = 0x%08lx:" + " key = %lu, expected = %lu, returned = %lu\n", + table->magic, key, value, *retval); + break; case 1: - printf("Not found: key = %lu, expected = %lu, returned = %lu\n", - key, value, *retval); - break; + printf("Not found: key = %lu, expected = %lu, returned = %lu\n", + key, value, *retval); + break; case 0: - if (value != *retval) - printf("Bad value: key = %lu, expected = %lu, returned = %lu\n", - key, value, *retval); - break; + if (value != *retval) + printf("Bad value: key = %lu, expected = %lu, returned = %lu\n", + key, value, *retval); + break; default: - printf("Bad retcode = %d: key = %lu, expected = %lu, returned = %lu\n", - retcode, key, value, *retval); - break; + printf("Bad retcode = %d: key = %lu, expected = %lu, returned = %lu\n", + retcode, key, value, *retval); + break; } } @@ -171,44 +177,56 @@ int main(void) printf("\n***** 256 consecutive integers ****\n"); table = drmHashCreate(); - for (i = 0; i < 256; i++) drmHashInsert(table, i, (void *)&i); - for (i = 0; i < 256; i++) check_table(table, i, i); + for (i = 0; i < 256; i++) + drmHashInsert(table, i, (void *)&i); + for (i = 0; i < 256; i++) + check_table(table, i, i); compute_dist(table); drmHashDestroy(table); printf("\n***** 1024 consecutive integers ****\n"); table = drmHashCreate(); - for (i = 0; i < 1024; i++) drmHashInsert(table, i, (void *)&i); - for (i = 0; i < 1024; i++) check_table(table, i, i); + for (i = 0; i < 1024; i++) + drmHashInsert(table, i, (void *)&i); + for (i = 0; i < 1024; i++) + check_table(table, i, i); compute_dist(table); drmHashDestroy(table); printf("\n***** 1024 consecutive page addresses (4k pages) ****\n"); table = drmHashCreate(); - for (i = 0; i < 1024; i++) drmHashInsert(table, i*4096, (void *)&i); - for (i = 0; i < 1024; i++) check_table(table, i*4096, i); + for (i = 0; i < 1024; i++) + drmHashInsert(table, i*4096, (void *)&i); + for (i = 0; i < 1024; i++) + check_table(table, i*4096, i); compute_dist(table); drmHashDestroy(table); printf("\n***** 1024 random integers ****\n"); table = drmHashCreate(); srandom(0xbeefbeef); - for (i = 0; i < 1024; i++) drmHashInsert(table, random(), (void *)&i); + for (i = 0; i < 1024; i++) + drmHashInsert(table, random(), (void *)&i); srandom(0xbeefbeef); - for (i = 0; i < 1024; i++) check_table(table, random(), i); + for (i = 0; i < 1024; i++) + check_table(table, random(), i); srandom(0xbeefbeef); - for (i = 0; i < 1024; i++) check_table(table, random(), i); + for (i = 0; i < 1024; i++) + check_table(table, random(), i); compute_dist(table); drmHashDestroy(table); printf("\n***** 5000 random integers ****\n"); table = drmHashCreate(); srandom(0xbeefbeef); - for (i = 0; i < 5000; i++) drmHashInsert(table, random(), (void *)&i); + for (i = 0; i < 5000; i++) + drmHashInsert(table, random(), (void *)&i); srandom(0xbeefbeef); - for (i = 0; i < 5000; i++) check_table(table, random(), i); + for (i = 0; i < 5000; i++) + check_table(table, random(), i); srandom(0xbeefbeef); - for (i = 0; i < 5000; i++) check_table(table, random(), i); + for (i = 0; i < 5000; i++) + check_table(table, random(), i); compute_dist(table); drmHashDestroy(table);
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> --- tests/hash.c | 102 +++++++++++++++++++++++++++++++++++------------------------ 1 file changed, 60 insertions(+), 42 deletions(-)