Hi :
For netconn API, the following netbuf_delete api will free inbuf memory without
delay ?
http_server_netconn_serve(struct netconn *conn)
{
struct netbuf *inbuf;
err_t err;
err = netconn_recv(conn, &inbuf);
if (err != ERR_OK) return;
netconn_write(conn, http_html_hdr, sizeof(http_html_hdr)-1, NETCONN_NOCOPY);
netconn_write(conn, http_index_html, sizeof(http_index_html)-1,
NETCONN_NOCOPY);
netconn_close(conn);
netbuf_delete(inbuf);
}
From: [email protected]
[mailto:[email protected]] On Behalf Of
Vincent Cui
Sent: 2014年8月23日 11:44
To: Mailing list for lwIP users
Subject: Re: [lwip-users] demo web refresh down
Hi
By check
http://www.lpcware.com/content/faq/malloc-failure-using-freertos-heap3c-lpcxpresso-tool-chain
I found that heap is real overfollow once more request coming in frequency.
More memory is not free on time.
In real application, FreeRTOS and LWIP also use C lib malloc and free function
in case of
1. Freertos use heap3.c
2. popt.h define
#define MEM_LIBC_MALLOC 1
#define MEMP_MEM_MALLOC 1
How to fix the issue of heap overflow ?
Vincent
Vincent Cui
Firmware Engineer Leader
[cid:[email protected]]
Room1106, Building A, New Caohejing Business Centre, No.391, Guiping Road,
Xuhui District, Shanghai, P.R.China
T: +86 21 34612525, M: +86 13482482211
www.enlogic.com<http://www.enlogic.com>
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From: Vincent Cui
Sent: 2014年8月23日 10:46
To: Vincent Cui; 'Mailing list for lwIP users'
Subject: RE: demo web refresh down
Hi:
I define following to use system malloc and free
#define MEM_LIBC_MALLOC 1
#define MEMP_MEM_MALLOC 1
I found that the malloc memory is not free on time, so malloc failure in new
request coming.
It seems to need some protect those . Am I right ?
Vincent
From: Vincent Cui
Sent: 2014年8月23日 9:50
To: [email protected]<mailto:[email protected]>
Subject: demo web refresh down
All:
I use LPCXPRESSO to develop a simple demo server with NETCONN api on LPC1769
If the demo server refresh itself per 3 second, it works well.
If I refresh it by press F5 frequencely, it halt and can’t connect to host..
Who know the reason ?
Vincent
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