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makedep: Make the filename hashing more efficient. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2016-03-01 17:20:33 +09:00
parent 850df9d5a5
commit bf6db74f85
1 changed files with 5 additions and 4 deletions
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9
tools/makedep.c
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@ -109,7 +109,7 @@ static const struct
{ FLAG_IDL_HEADER, ".h" }
};
#define HASH_SIZE 137
#define HASH_SIZE 997
static struct list files[HASH_SIZE];
@ -728,8 +728,9 @@ static char *get_line( FILE *file )
*/
static unsigned int hash_filename( const char *name )
{
unsigned int ret = 0;
while (*name) ret = (ret << 7) + (ret << 3) + *name++;
/* FNV-1 hash */
unsigned int ret = 2166136261;
while (*name) ret = (ret * 16777619) ^ *name++;
return ret % HASH_SIZE;
}
@ -742,7 +743,6 @@ static struct file *add_file( const char *name )
struct file *file = xmalloc( sizeof(*file) );
memset( file, 0, sizeof(*file) );
file->name = xstrdup( name );
list_add_tail( &files[hash_filename( name )], &file->entry );
return file;
}
@ -1198,6 +1198,7 @@ static struct file *load_file( const char *name )
if (!(f = fopen( name, "r" ))) return NULL;
file = add_file( name );
list_add_tail( &files[hash], &file->entry );
input_file_name = file->name;
input_line = 0;