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Work in progress on optimizing the send() function calls, to use as few as possible. 

(Although, this does not enable that code).
This commit is contained in:
Jan Vidar Krey 2009-05-28 01:47:48 +02:00
parent 8f7cc0b7a7
commit 8b90f79bac
1 changed files with 61 additions and 1 deletions
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62
src/hubio.c
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@ -20,6 +20,10 @@
#include "uhub.h"
#include "hubio.h"
#define SEND_CHUNKS 1
/* FIXME: This should not be needed! */
extern struct hub_info* g_hub;
struct hub_recvq* hub_recvq_create()
{
@ -114,13 +118,14 @@ void hub_sendq_add(struct hub_sendq* q, struct adc_message* msg_)
void hub_sendq_remove(struct hub_sendq* q, struct adc_message* msg)
{
list_remove(q->queue, msg);
adc_msg_free(msg);
q->size -= msg->length;
adc_msg_free(msg);
q->offset = 0;
}
int hub_sendq_send(struct hub_sendq* q, hub_recvq_write w, void* data)
{
#ifdef SEND_CHUNKS
int ret = 0;
int bytes_sent = 0;
@ -143,6 +148,61 @@ int hub_sendq_send(struct hub_sendq* q, hub_recvq_write w, void* data)
}
return bytes_sent;
#else
int ret = 0;
size_t sent = 0;
size_t bytes = 0;
size_t offset = q->offset; // offset into first message.
size_t length = 0;
size_t msgs = 0;
char* sbuf = g_hub->sendbuf;
size_t max_send_buf = 1000; // MAX_SEND_BUF;
/* Copy as many messages possible into global send queue */
struct adc_message* msg = list_get_first(q->queue);
while (msg)
{
msgs++;
length = MIN(msg->length - offset, (max_send_buf-1) - bytes);
memcpy(sbuf + bytes, msg->cache + offset, length);
bytes += length;
if (length < msg->length - offset)
break;
offset = 0;
msg = list_get_next(q->queue);
}
msg = list_get_first(q->queue);
printf("Queued up bytes: %d, in %d msgs (first=%d/%d)\n", (int) bytes, (int) msgs, (int) q->offset, (msg ? (int) msg->length : 0));
/* Send as much as possible */
ret = w(data, sbuf, bytes);
if (ret > 0)
{
/* Remove messages sent */
offset = q->offset;
msg = list_get_first(q->queue);
while (msg)
{
sent += (msg->length - offset);
offset = 0;
if (sent >= bytes)
break;
printf("removing msg %d [%p]\n", (int) msgs, msg);
hub_sendq_remove(q, msg);
msgs--;
msg = list_get_next(q->queue);
}
q->offset = (bytes - sent);
}
return ret;
#endif
}
int hub_sendq_is_empty(struct hub_sendq* q)