*Update: I am using multiple poll-handles on same sockfd's. However the
poll-handles are from different requests. It is like sending multiple HTTP
gets on same socket.*
*Please let me know if any problem with libuv to handle this.*
On Friday, 12 May 2017 19:11:48 UTC+5:30, Srinivasa Srikanth Podila wrote:
>
> Hi,
>
> I am allocating memory for a struct "request" using malloc. The request
> object has a uv_poll_handle as a member.
>
> The request updates its poll_handle on a sockfd *[using
> uv_poll_init_socket(loop, &request->poll_handle, sockfd)] *received by
> libcurl. After init_socket, i update poll_handle.data to "request" object
> so that i could use in uv callback context, and starts polling on it using*
> [uv_poll_start(&request->poll_handle, events, poll_req_uv_cb);]*
>
> Now when i get poll_remove notification from libcurl, I am using
> *[uv_close((uv_handle_t
> *)&request->poll_handle, process_request_response)]. *The
> process_request_response is close_callback which i am planning to free the
> allocated "request" object.
>
> I do it for many request objects in a default-loop continuously. It works
> fine for some time and after some time, i see the SIGSEGV as
> poll_handle.data is NULL and loop object also NULL in the close callback api
> *[process_request_response]*.
>
> Please check the inline gdb logs.
>
> (gdb) p req
> $1 = (uv_handle_t *) 0xe159b0
> (gdb) p *req
> $2 = {*data = 0x0, loop = 0x0*, type = UV_POLL, close_cb = 0x404b5d
> <process_request_response>, handle_queue = {0xe09760, 0x62e6a0}, u = {fd =
> 0, reserved = {0x0, 0x0, 0x0,
> 0x0}}, next_closing = 0xe09740, flags = 3}
>
> Just before i close the uv_poll_handle, I have a print to ensure if i have
> the data.
> INFO, 12:54:31.266583, curl_socket_cb, STOP POLL Curl Handle:0xeb26c0,
> Request:0xe159a0, poll_handle:0xe159b0 poll_request:0xe159a0
>
> Please let me know if there is any problem in my design approach (or) let
> me know if there is any bug in this area.
>
> Thanks,
> Srikanth
>
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