int
param_export(int fd, bool only_unsaved)
{
struct param_wbuf_s *s = NULL;
struct bson_encoder_s encoder;
int result = -1;
param_lock();
bson_encoder_init_file(&encoder, fd);
/* no modified parameters -> we are done */
if (param_values == NULL) {
result = 0;
goto out;
}
while ((s = (struct param_wbuf_s *)utarray_next(param_values, s)) != NULL) {
int32_t i;
float f;
/*
* If we are only saving values changed since last save, and this
* one hasn't, then skip it
*/
if (only_unsaved && !s->unsaved) {
continue;
}
s->unsaved = false;
/* append the appropriate BSON type object */
switch (param_type(s->param)) {
case PARAM_TYPE_INT32:
param_get(s->param, &i);
if (bson_encoder_append_int(&encoder, param_name(s->param), i)) {
debug("BSON append failed for '%s'", param_name(s->param));
goto out;
}
break;
case PARAM_TYPE_FLOAT:
param_get(s->param, &f);
if (bson_encoder_append_double(&encoder, param_name(s->param), f)) {
debug("BSON append failed for '%s'", param_name(s->param));
goto out;
}
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
if (bson_encoder_append_binary(&encoder,
param_name(s->param),
BSON_BIN_BINARY,
param_size(s->param),
param_get_value_ptr(s->param))) {
debug("BSON append failed for '%s'", param_name(s->param));
goto out;
}
break;
default:
debug("unrecognized parameter type");
goto out;
}
}
result = 0;
out:
param_unlock();
if (result == 0) {
result = bson_encoder_fini(&encoder);
}
return result;
}
int
param_export(int fd, bool only_unsaved)
{
struct param_wbuf_s *s = NULL;
struct bson_encoder_s encoder;
int result = -1;
param_lock();
param_bus_lock(true);
bson_encoder_init_file(&encoder, fd);
param_bus_lock(false);
/* no modified parameters -> we are done */
if (param_values == NULL) {
result = 0;
goto out;
}
while ((s = (struct param_wbuf_s *)utarray_next(param_values, s)) != NULL) {
int32_t i;
float f;
/*
* If we are only saving values changed since last save, and this
* one hasn't, then skip it
*/
if (only_unsaved && !s->unsaved) {
continue;
}
s->unsaved = false;
/* append the appropriate BSON type object */
switch (param_type(s->param)) {
case PARAM_TYPE_INT32: {
param_get(s->param, &i);
const char *name = param_name(s->param);
/* lock as short as possible */
param_bus_lock(true);
if (bson_encoder_append_int(&encoder, name, i)) {
param_bus_lock(false);
debug("BSON append failed for '%s'", name);
goto out;
}
}
break;
case PARAM_TYPE_FLOAT: {
param_get(s->param, &f);
const char *name = param_name(s->param);
/* lock as short as possible */
param_bus_lock(true);
if (bson_encoder_append_double(&encoder, name, f)) {
param_bus_lock(false);
debug("BSON append failed for '%s'", name);
goto out;
}
}
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX: {
const char *name = param_name(s->param);
const size_t size = param_size(s->param);
const void *value_ptr = param_get_value_ptr(s->param);
/* lock as short as possible */
param_bus_lock(true);
if (bson_encoder_append_binary(&encoder,
name,
BSON_BIN_BINARY,
size,
value_ptr)) {
param_bus_lock(false);
debug("BSON append failed for '%s'", name);
goto out;
}
}
break;
default:
debug("unrecognized parameter type");
goto out;
}
param_bus_lock(false);
/* allow this process to be interrupted by another process / thread */
usleep(5);
}
result = 0;
out:
param_unlock();
if (result == 0) {
result = bson_encoder_fini(&encoder);
}
return result;
}
