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Re: [lwip-users] PBUF Leak Problems...
From: |
Jonathan Larmour |
Subject: |
Re: [lwip-users] PBUF Leak Problems... |
Date: |
Wed, 19 Sep 2007 18:47:59 +0100 |
User-agent: |
Thunderbird 1.5.0.12 (X11/20070530) |
Thomas Catalino wrote:
We are using the sockets API. I agree, there could be an issue with the
application not reading the data out of the stack. However, the
application is complex and we did not write it, so I'll probably have to
investigate this from the bottom up - hopefully I can poke around the
stack to find out which sockets are backed up with data waiting to be read.
Is there an easy recipe to locate a socket in the stack that is backed
up? A few pointers might be very helpful, we can probably follow our
noses from there...
If you're using just the sockets API, you could look at the "sockets"
array, declared in sockets.c as:
static struct lwip_socket sockets[NUM_SOCKETS];
where struct lwip_socket is:
struct lwip_socket {
struct netconn *conn;
struct netbuf *lastdata;
u16_t lastoffset;
u16_t rcvevent;
u16_t sendevent;
u16_t flags;
int err;
};
That gives you a route to finding out your connections. The 'conn' field is
NULL for unused entries. You could use rcvevent to know whether a receive
event occured, or more helpfully, look at conn->recvmbox. Each mbox entry
(in whatever form your OS stores it in the mbox) is a pbuf (for TCP sockets).
Jifl
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- Re: [lwip-users] Re: PBUF Leak Problems..., (continued)
- Re: [lwip-users] Re: PBUF Leak Problems..., Frédéric BERNON, 2007/09/21
- Re: [lwip-users] Re: PBUF Leak Problems..., Kieran Mansley, 2007/09/21
- [lwip-users] Re: PBUF Leak Problems..., Thomas Catalino, 2007/09/21
- Re: [lwip-users] Re: PBUF Leak Problems..., Kieran Mansley, 2007/09/21
- [lwip-users] Re: PBUF Leak Problems..., Thomas Catalino, 2007/09/21
- Re: [lwip-users] Re: PBUF Leak Problems..., Jonathan Larmour, 2007/09/21
- [lwip-users] RE: PBUF Leak Problems..., Ramanathan Ramadass, 2007/09/21
Re: [lwip-users] PBUF Leak Problems..., Thomas Catalino, 2007/09/19