/* check all monitored ranges, and log changes */
void write_mem_range(size_t start, size_t end)
{
write_record_type(fd, RTYPE_RANGE_DATA);
(void)write(fd, &start, sizeof(size_t));
(void)write(fd, &end, sizeof(size_t));
(void)write(fd, (void*)start, end - start);
}
flightrec_status log_comment(const char *data, size_t size)
{
pthread_mutex_lock(&mutex);
write_record_type(fd, RTYPE_COMMENT);
(void)write(fd, &size, sizeof(size_t));
(void)write(fd, data, size);
pthread_mutex_unlock(&mutex);
return FDR_OK;
}
flightrec_status add_monitored_range(size_t addr_start, size_t addr_end)
{
pthread_mutex_lock(&mutex);
std::pair<MemIntervalSet::iterator, bool> rv = persistent.insert(MemInterval(addr_start, addr_end));
if(rv.second)
{
write_record_type(fd, RTYPE_ADD_UPDATED_RANGE);
write(fd, &addr_start, sizeof(size_t));
write(fd, &addr_end, sizeof(size_t));
}
pthread_mutex_unlock(&mutex);
return rv.second ? FDR_OK : FDR_OVERLAP;
}
flightrec_status remove_monitored_range(size_t addr_start, size_t addr_end)
{
pthread_mutex_lock(&mutex);
// XXX currently assumes a complete match, partial munmaps are not supported
size_t ret = persistent.erase(MemInterval(addr_start, addr_end));
if(ret)
{
write_record_type(fd, RTYPE_REMOVE_UPDATED_RANGE);
(void)write(fd, &addr_start, sizeof(size_t));
(void)write(fd, &addr_end, sizeof(size_t));
}
pthread_mutex_unlock(&mutex);
return ret ? FDR_OK : FDR_NOT_FOUND;
}
flightrec_status log_event(Event *context)
{
/* count parameters */
uint32_t num_parameters = context->parameters.size();
pthread_mutex_lock(&mutex);
/* log updates to monitored ranges */
check_monitored_ranges();
/* log temp ranges */
for(MemIntervalSet::const_iterator i=context->temp.begin(); i!=context->temp.end(); ++i)
{
write_record_type(fd, RTYPE_RANGE_TEMP_DATA);
(void)write(fd, &i->start, sizeof(size_t));
(void)write(fd, &i->end, sizeof(size_t));
(void)write(fd, (void*)i->start, i->end - i->start);
}
write_record_type(fd, RTYPE_EVENT);
uint8_t name_len = strlen(context->event_type);
(void)write(fd, &name_len, sizeof(uint8_t));
(void)write(fd, context->event_type, name_len);
/* log parameters */
(void)write(fd, &num_parameters, sizeof(uint32_t));
for(size_t i=0; i<num_parameters; ++i)
{
uint8_t name_len = strlen(context->parameters[i].name);
(void)write(fd, &name_len, sizeof(uint8_t));
(void)write(fd, context->parameters[i].name, name_len);
(void)write(fd, &context->parameters[i].value, sizeof(size_t));
}
delete context;
pthread_mutex_unlock(&mutex);
return FDR_OK;
}
