frodo-wii/Src/data_store.cpp

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#include <string.h>
#include <data_store.hh>
#include <utils.hh>
DataStore::DataStore()
{
this->registeredData = NULL;
this->n_registeredData = 0;
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this->key_counter = 0;
}
DataStore::~DataStore()
{
free(this->registeredData);
}
struct ds_data *DataStore::registerNetworkData(uint32_t key, uint32_t metadata,
void *data, size_t data_sz)
{
struct ds_data *out;
out = (struct ds_data *)xmalloc(sizeof(struct ds_data) + data_sz);
out->key = key;
out->metadata = metadata;
out->sz = data_sz;
memcpy(out->data, data, data_sz);
return this->registerData(key, out);
}
struct ds_data *DataStore::registerData(uint32_t key,
struct ds_data *data)
{
int i;
/* Replacing an existing entry? */
for (i = 0; i < this->n_registeredData; i++)
{
if (this->registeredData[i] &&
this->registeredData[i]->key == key)
{
struct ds_data *old = this->registeredData[i];
this->registeredData[i] = data;
return old;
}
}
for (i = 0; i < this->n_registeredData; i++)
{
/* Found free spot? */
if (this->registeredData[i] == NULL)
break;
}
if (i >= this->n_registeredData)
{
this->n_registeredData++;
this->registeredData = (struct ds_data **)xrealloc(this->registeredData,
this->n_registeredData * sizeof(void*));
}
this->registeredData[i] = data;
data->key = key;
return NULL;
}
uint32_t DataStore::getNextKey()
{
uint32_t out = this->key_counter;
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this->key_counter++;
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if (this->key_counter >= DATA_KEY_RANGE)
this->key_counter = 0;
return out;
}
struct ds_data *DataStore::unregisterData(uint32_t key)
{
for (int i = 0; i < this->n_registeredData; i++)
{
if (this->registeredData[i] &&
this->registeredData[i]->key == key)
{
struct ds_data *old = this->registeredData[i];
this->registeredData[i] = NULL;
return old;
}
}
return NULL;
}
struct ds_data *DataStore::getData(uint32_t key)
{
for (int i = 0; i < this->n_registeredData; i++)
{
if (this->registeredData[i] &&
this->registeredData[i]->key == key)
return this->registeredData[i];
}
return NULL;
}
DataStore *DataStore::ds = NULL;