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fc_botelho 2009-03-18 22:08:46 +00:00
parent cb676ee676
commit 2cfffbcc9d
4 changed files with 29 additions and 13 deletions
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2
configure.ac
View File

@ -1,6 +1,6 @@
dnl Process this file with autoconf to produce a configure script.
AC_INIT(Makefile.am)
AM_INIT_AUTOMAKE(cmph, 0.8)
AM_INIT_AUTOMAKE(cmph, 0.9)
AM_CONFIG_HEADER(config.h)
dnl Checks for programs.

4
src/chd_ph.c
View File

@ -179,7 +179,7 @@ void chd_ph_config_set_b(cmph_config_t *mph, cmph_uint32 keys_per_bucket)
{
assert(mph);
chd_ph_config_data_t *chd_ph = (chd_ph_config_data_t *)mph->data;
if(keys_per_bucket <= 1 || keys_per_bucket >= 15)
if(keys_per_bucket < 1 || keys_per_bucket >= 15)
{
keys_per_bucket = 4;
}
@ -542,7 +542,7 @@ cmph_t *chd_ph_new(cmph_config_t *mph, double c)
if(mph->verbosity && chd_ph->keys_per_bin == 1)
{
fprintf(stderr, "space lower bound is %.3f bits per key", chd_ph_space_lower_bound(chd_ph->m, chd_ph->n));
fprintf(stderr, "space lower bound is %.3f bits per key\n", chd_ph_space_lower_bound(chd_ph->m, chd_ph->n));
}
// We allocate the working tables

9
src/main.c
View File

@ -82,7 +82,7 @@ int main(int argc, char **argv)
cmph_io_adapter_t *source;
cmph_uint32 memory_availability = 0;
cmph_uint32 b = 0;
cmph_uint32 keys_per_bin = 0;
cmph_uint32 keys_per_bin = 1;
while (1)
{
char ch = getopt(argc, argv, "hVvgc:k:a:M:b:t:f:m:d:s:");
@ -299,7 +299,7 @@ int main(int argc, char **argv)
return -1;
}
cmph_uint32 siz = cmph_size(mphf);
hashtable = (cmph_uint8*)malloc(siz*sizeof(cmph_uint8));
hashtable = (cmph_uint8*)calloc(siz, sizeof(cmph_uint8));
memset(hashtable, 0,(size_t) siz);
//check all keys
for (i = 0; i < source->nkeys; ++i)
@ -313,11 +313,12 @@ int main(int argc, char **argv)
{
fprintf(stderr, "Unknown key %*s in the input.\n", buflen, buf);
ret = 1;
} else if(hashtable[h])
} else if(hashtable[h] >= keys_per_bin)
{
fprintf(stderr, "More than %u keys were mapped to bin %u\n", keys_per_bin, h);
fprintf(stderr, "Duplicated or unknown key %*s in the input\n", buflen, buf);
ret = 1;
} else hashtable[h] = 1;
} else hashtable[h]++;
if (verbosity)
{

27
tests/packed_mphf_tests.c
View File

@ -22,15 +22,17 @@
void usage(const char *prg)
{
fprintf(stderr, "usage: %s [-v] [-h] [-V] [-k nkeys] [-m file.mph] keysfile\n", prg);
fprintf(stderr, "usage: %s [-v] [-h] [-V] [-t keys_per_bin] [-k nkeys] [-m file.mph] keysfile\n", prg);
}
void usage_long(const char *prg)
{
fprintf(stderr, "usage: %s [-v] [-h] [-V] [-k nkeys] [-m file.mph] keysfile\n", prg);
fprintf(stderr, "usage: %s [-v] [-h] [-V] [-t keys_per_bin] [-k nkeys] [-m file.mph] keysfile\n", prg);
fprintf(stderr, "Packed MPHFs testing tool\n\n");
fprintf(stderr, " -h\t print this help message\n");
fprintf(stderr, " -V\t print version number and exit\n");
fprintf(stderr, " -v\t increase verbosity (may be used multiple times)\n");
fprintf(stderr, " -t\t set the number of keys per bin for a t-perfect hashing function.\n");
fprintf(stderr, " \t A t-perfect hashing function allows at most t collisions in a given bin.\n");
fprintf(stderr, " -k\t number of keys\n");
fprintf(stderr, " -m\t minimum perfect hash function file \n");
fprintf(stderr, " keysfile\t line separated file with keys\n");
@ -47,9 +49,11 @@ int main(int argc, char **argv)
cmph_uint32 i = 0;
cmph_t *mphf = NULL;
cmph_io_adapter_t *source;
cmph_uint32 keys_per_bin = 1;
while (1)
{
char ch = getopt(argc, argv, "hVvk:m:");
char ch = getopt(argc, argv, "hVvt:k:m:");
if (ch == -1) break;
switch (ch)
{
@ -69,6 +73,16 @@ int main(int argc, char **argv)
case 'v':
++verbosity;
break;
case 't':
{
char *cptr;
keys_per_bin = strtoul(optarg, &cptr, 10);
if(*cptr != 0) {
fprintf(stderr, "Parameter t was not found: %s\n", optarg);
exit(1);
}
}
break;
case 'V':
printf("%s\n", VERSION);
return 0;
@ -124,7 +138,7 @@ int main(int argc, char **argv)
return -1;
}
cmph_uint32 siz = cmph_size(mphf);
hashtable = (cmph_uint8*)malloc(siz*sizeof(cmph_uint8));
hashtable = (cmph_uint8*)calloc(siz, sizeof(cmph_uint8));
memset(hashtable, 0, (size_t)siz);
// packing the function
@ -152,11 +166,12 @@ int main(int argc, char **argv)
{
fprintf(stderr, "Unknown key %*s in the input.\n", buflen, buf);
ret = 1;
} else if(hashtable[h])
} else if(hashtable[h] >= keys_per_bin)
{
fprintf(stderr, "More than %u keys were mapped to bin %u\n", keys_per_bin, h);
fprintf(stderr, "Duplicated or unknown key %*s in the input\n", buflen, buf);
ret = 1;
} else hashtable[h] = 1;
} else hashtable[h]++;
if (verbosity)
{