void profile_dereference_data(prf_data_t data)
{
int err;
err = k5_mutex_lock(&g_shared_trees_mutex);
if (err)
return;
profile_dereference_data_locked(data);
(void) k5_mutex_unlock(&g_shared_trees_mutex);
}
static errcode_t rw_setup(profile_t profile)
{
prf_file_t file;
errcode_t retval = 0;
if (!profile)
return PROF_NO_PROFILE;
if (profile->magic != PROF_MAGIC_PROFILE)
return PROF_MAGIC_PROFILE;
file = profile->first_file;
retval = profile_lock_global();
if (retval)
return retval;
/* Don't update the file if we've already made modifications */
if (file->data->flags & PROFILE_FILE_DIRTY) {
profile_unlock_global();
return 0;
}
if ((file->data->flags & PROFILE_FILE_SHARED) != 0) {
prf_data_t new_data;
new_data = profile_make_prf_data(file->data->filespec);
if (new_data == NULL) {
retval = ENOMEM;
} else {
retval = k5_mutex_init(&new_data->lock);
if (retval == 0) {
new_data->root = NULL;
new_data->flags = file->data->flags & ~PROFILE_FILE_SHARED;
new_data->timestamp = 0;
new_data->upd_serial = file->data->upd_serial;
}
}
if (retval != 0) {
profile_unlock_global();
free(new_data);
return retval;
}
profile_dereference_data_locked(file->data);
file->data = new_data;
}
profile_unlock_global();
retval = profile_update_file(file);
return retval;
}
void profile_dereference_data(prf_data_t data)
{
k5_mutex_lock(&g_shared_trees_mutex);
profile_dereference_data_locked(data);
k5_mutex_unlock(&g_shared_trees_mutex);
}