int rbuf_push_back(ringbuffer_t *rb, void *data, size_t len)
{
if (!rb || !data
|| len != rb->block_size)
return -1;
char *rbuf = rb->buffer;
if (!rbuf)
return -1;
osal_memcpy(rbuf + rb->end * rb->block_size, data, len);
AdvanceIndex(rb->end, rb->capacity);
if (rb->length == rb->capacity) {
AdvanceIndex(rb->start, rb->capacity);
}
else {
rb->length += 1;
}
return 0;
}
void UpdatePerfStats( void )
{
float flCurTime = Plat_FloatTime();
if (
( m_flLastSampleTime == -1 ) ||
( flCurTime - m_flLastSampleTime >= STATS_RECORD_INTERVAL ) )
{
if ( ( m_flLastRealTime > 0 ) && ( flCurTime > m_flLastRealTime ) )
{
float flFrameRate = 1.0 / ( flCurTime - m_flLastRealTime );
StatsBufferRecord_t &stat = m_StatsBuffer[m_nWriteIndex];
stat.m_flFrameRate = flFrameRate;
AdvanceIndex();
m_flLastSampleTime = flCurTime;
}
}
m_flLastRealTime = flCurTime;
}
void *rbuf_pop_front(ringbuffer_t *rb, void *pop_value, size_t len)
{
if (!rb || !pop_value
|| len != rb->block_size)
return 0;
char *rbuf = rb->buffer;
if (!rbuf)
return 0;
// empty FIFO, nothing pop out.
if (rb->length > 0) {
osal_memcpy(pop_value, rbuf + rb->start * len, len);
AdvanceIndex(rb->start, rb->capacity);
rb->length -= 1;
return pop_value;
}
return nullptr;
}
