MONGO_EXPORT void bson_oid_gen( bson_oid_t *oid ) {
static int incr = 0;
static int fuzz = 0;
int i;
time_t t = time( NULL );
int ti;
if( sizeof (time_t) != 4 )
ti = (int) ( t & INT32_MAX );
if( oid_inc_func )
i = oid_inc_func();
else
i = incr++;
if ( !fuzz ) {
if ( oid_fuzz_func )
fuzz = oid_fuzz_func();
else {
srand( ( sizeof( time_t ) == 4 ) ? (int) t : ti);
fuzz = rand();
}
}
bson_big_endian32( &oid->ints[0], ( sizeof( time_t ) == 4) ? (void *) &t : (void *) &ti );
oid->ints[1] = fuzz;
bson_big_endian32( &oid->ints[2], &i );
}
MONGO_EXPORT time_t bson_oid_generated_time( bson_oid_t *oid ) {
time_t out;
if ( sizeof( time_t ) == 4 )
bson_big_endian32( &out, &oid->ints[0] );
else
{
int i;
bson_big_endian32( &i, &oid->ints[0] );
out = (time_t) i;
}
return out;
}
void bson_oid_gen(bson_oid_t* oid){
static int incr = 0;
static int fuzz = 0;
int i = incr++; /*TODO make atomic*/
int t = time(NULL);
/* TODO rand sucks. find something better */
if (!fuzz){
srand(t);
fuzz = rand();
}
bson_big_endian32(&oid->ints[0], &t);
oid->ints[1] = fuzz;
bson_big_endian32(&oid->ints[2], &i);
}
void bson_oid_gen( bson_oid_t *oid ) {
static int incr = 0;
static int fuzz = 0;
int i;
int t = time( NULL );
if( oid_inc_func )
i = oid_inc_func();
else
i = incr++;
if ( !fuzz ) {
if ( oid_fuzz_func )
fuzz = oid_fuzz_func();
else {
srand( t );
fuzz = rand();
}
}
bson_big_endian32( &oid->ints[0], &t );
oid->ints[1] = fuzz;
bson_big_endian32( &oid->ints[2], &i );
}
/* Test custom increment and fuzz functions. */
int main() {
bson_oid_t o;
int res;
char bigendian_i[4] = {0};
bson_set_oid_inc( increment );
bson_set_oid_fuzz( fuzz );
bson_oid_gen( &o );
memcpy(bigendian_i + 1, o.bytes + 9, 3);
bson_big_endian32(&res, bigendian_i);
ASSERT( !strncmp(o.bytes + 4, "hostid_and_pid", 5));
ASSERT( res == 1001 );
return 0;
}
time_t bson_oid_generated_time( bson_oid_t *oid ) {
time_t out;
bson_big_endian32( &out, &oid->ints[0] );
return out;
}
