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【优化】1.优化buffer大小 2.优化interval 3. 增加wait_rcv api

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This commit is contained in:
yangchaojun 2020-09-10 11:40:28 +08:00
parent bf616efb43
commit d16b9e3802
2 changed files with 24 additions and 7 deletions
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26
ikcp.c
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@ -141,7 +141,6 @@ static inline long _itimediff(IUINT32 later, IUINT32 earlier)
//---------------------------------------------------------------------
// manage segment
//---------------------------------------------------------------------
typedef struct IKCPSEG IKCPSEG;
static void* (*ikcp_malloc_hook)(size_t) = NULL;
static void (*ikcp_free_hook)(void *) = NULL;
@ -254,7 +253,7 @@ ikcpcb* ikcp_create(IUINT32 conv, void *user)
kcp->mss = kcp->mtu - IKCP_OVERHEAD;
kcp->stream = 0;
kcp->buffer = (char*)ikcp_malloc((kcp->mtu + IKCP_OVERHEAD) * 3);
kcp->buffer = (char*)ikcp_malloc(kcp->mtu);
if (kcp->buffer == NULL) {
ikcp_free(kcp);
return NULL;
@ -1186,6 +1185,7 @@ IUINT32 ikcp_check(const ikcpcb *kcp, IUINT32 current)
IINT32 tm_flush = 0x7fffffff;
IINT32 tm_packet = 0x7fffffff;
IUINT32 minimal = 0;
IUINT32 resent;
struct IQUEUEHEAD *p;
if (kcp->updated == 0) {
@ -1202,18 +1202,27 @@ IUINT32 ikcp_check(const ikcpcb *kcp, IUINT32 current)
}
tm_flush = _itimediff(ts_flush, current);
resent = (kcp->fastresend > 0)? (IUINT32)kcp->fastresend : 0xffffffff;
for (p = kcp->snd_buf.next; p != &kcp->snd_buf; p = p->next) {
const IKCPSEG *seg = iqueue_entry(p, const IKCPSEG, node);
IINT32 diff = _itimediff(seg->resendts, current);
const IKCPSEG *segment = iqueue_entry(p, const IKCPSEG, node);
IINT32 diff = _itimediff(segment->resendts, current);
if (diff <= 0) {
return current;
}
else if (segment->fastack >= resent) {
if ((int)segment->xmit <= kcp->fastlimit ||
kcp->fastlimit <= 0) {
return current;
}
}
if (diff < tm_packet) tm_packet = diff;
}
minimal = (IUINT32)(tm_packet < tm_flush ? tm_packet : tm_flush);
if (minimal >= kcp->interval) minimal = kcp->interval;
IUINT32 interval = (kcp->probe != 0 || kcp->nsnd_que > 0 || kcp->nrcv_que > 0 || kcp->nrcv_buf > 0)
? kcp->interval : 5000;
if (minimal >= interval) minimal = interval;
return current + minimal;
}
@ -1225,7 +1234,8 @@ int ikcp_setmtu(ikcpcb *kcp, int mtu)
char *buffer;
if (mtu < 50 || mtu < (int)IKCP_OVERHEAD)
return -1;
buffer = (char*)ikcp_malloc((mtu + IKCP_OVERHEAD) * 3);
if(mtu == kcp->mtu) return 0;
buffer = (char*)ikcp_malloc(mtu);
if (buffer == NULL)
return -2;
kcp->mtu = mtu;
@ -1287,6 +1297,10 @@ int ikcp_waitsnd(const ikcpcb *kcp)
return kcp->nsnd_buf + kcp->nsnd_que;
}
int ikcp_waitrcv(const ikcpcb *kcp)
{
return kcp->nrcv_buf + kcp->nrcv_que;
}
// read conv
IUINT32 ikcp_getconv(const void *ptr)

5
ikcp.h
View File

@ -316,7 +316,7 @@ struct IKCPCB
void (*writelog)(const char *log, struct IKCPCB *kcp, void *user);
};
typedef struct IKCPSEG IKCPSEG;
typedef struct IKCPCB ikcpcb;
#define IKCP_LOG_OUTPUT 1
@ -390,6 +390,9 @@ int ikcp_wndsize(ikcpcb *kcp, int sndwnd, int rcvwnd);
// get how many packet is waiting to be sent
int ikcp_waitsnd(const ikcpcb *kcp);
// get how many packet is waiting to be receive
int ikcp_waitrcv(const ikcpcb *kcp);
// fastest: ikcp_nodelay(kcp, 1, 20, 2, 1)
// nodelay: 0:disable(default), 1:enable
// interval: internal update timer interval in millisec, default is 100ms