<br>Should curl calls be done in separate thread or is it ok to do them in the main thread of modules?<span></span><br>On Tuesday, March 15, 2016, Anthony Minessale <<a href="mailto:anthony.minessale@gmail.com">anthony.minessale@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Curl is used in a few places and is not unstable. Study some of those mods and maybe you can see how to use it in a typical situation. Probably its related to memory management or lifecycle of objects you may be using.<span></span><br><br>On Tuesday, March 15, 2016, Chris Mandra <<a href="javascript:_e(%7B%7D,'cvml','mandra@gmail.com');" target="_blank">mandra@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hey guys, I'm working on a simple media bug module using FS 1.6. When a call comes in I'm calling switch_curl doing an http get. </div><div>
<p><span>In switch_standard_app I use switch_curl and invoke switch_curl_easy_perform </span>and exit after that.</p>
<p>Calling switch_curl seems very unstable. It's crashing free switch most of the time. Are there any things I should be looking for related to this? I'm wondering if maybe this is a threading issue? Any ideas?</p></div><div><div>I've included some backtraces</div><div><br></div><div><div>Thanks, chris</div></div><div><br></div><div><br></div><div>
<p><span>(gdb) bt</span></p>
<p><span>#0 0x00007f8f00c59cc9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56</span></p>
<p><span>#1 0x00007f8f00c5d0d8 in __GI_abort () at abort.c:89</span></p>
<p><span>#2 0x00007f8f00c96394 in __libc_message (do_abort=do_abort@entry=1, fmt=fmt@entry=0x7f8f00da4b28 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175</span></p>
<p><span>#3 0x00007f8f00ca266e in malloc_printerr (ptr=<optimized out>, str=0x7f8f00da0c19 "free(): invalid pointer", action=1) at malloc.c:4996</span></p>
<p><span>#4 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3840</span></p>
<p><span>#5 0x00007f8f01334567 in switch_log_node_free (pnode=pnode@entry=0x7f8eb2b1f158) at src/switch_log.c:136</span></p>
<p><span>#6 0x00007f8eeb192a24 in read_packet (listener=listener@entry=0x7f8ebc027898, event=event@entry=0x7f8eb2b1f7f0, timeout=timeout@entry=0) at mod_event_socket.c:1361</span></p>
<p><span>#7 0x00007f8eeb1988a0 in listener_run (thread=<optimized out>, obj=0x7f8ebc027898) at mod_event_socket.c:2719</span></p>
<p><span>#8 0x00007f8f01544430 in dummy_worker (opaque=0x7f8eb2be4868) at threadproc/unix/thread.c:151</span></p>
<p><span>#9 0x00007f8f00ff0182 in start_thread (arg=0x7f8eb2b20700) at pthread_create.c:312</span></p>
<p><span>#10 0x00007f8f00d1d47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111</span></p>
<p><span><i></i></span><br></p>
<p><span><a href="https://soniccloud.slack.com/archives/D02UEC39S/p1458078254000027" target="_blank"><i>[</i><span><i></i></span></a></span></p>
<p><span><a href="https://soniccloud.slack.com/archives/D02UEC39S/p1458078254000027" target="_blank">5:44<span></span></a></span></p>
<p><span><a href="https://soniccloud.slack.com/archives/D02UEC39S/p1458078254000027" target="_blank"><i>]</i><span><i></i></span></a></span></p>
<p><span>(gdb) bt full</span></p>
<p><span>#0 0x00007f8f00c59cc9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56</span></p>
<p><span> resultvar = 0</span></p>
<p><span> pid = 18329</span></p>
<p><span> selftid = 18421</span></p>
<p><span>#1 0x00007f8f00c5d0d8 in __GI_abort () at abort.c:89</span></p>
<p><span> save_stage = 2</span></p>
<p><span> act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 0, sa_restorer = 0x0}</span></p>
<p><span> sigs = {__val = {32, 0 <repeats 15 times>}}</span></p>
<p><span>#2 0x00007f8f00c96394 in __libc_message (do_abort=do_abort@entry=1, fmt=fmt@entry=0x7f8f00da4b28 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175</span></p>
<p><span> ap = {{gp_offset = 40, fp_offset = 32654, overflow_arg_area = 0x7f8eb2b1f010, reg_save_area = 0x7f8eb2b1efa0}}</span></p>
<p><span> fd = 2</span></p>
<p><span> on_2 = <optimized out></span></p>
<p><span> list = <optimized out></span></p>
<p><span> nlist = <optimized out></span></p>
<p><span> cp = <optimized out></span></p>
<p><span> written = <optimized out></span></p>
<p><span>#3 0x00007f8f00ca266e in malloc_printerr (ptr=<optimized out>, str=0x7f8f00da0c19 "free(): invalid pointer", action=1) at malloc.c:4996</span></p>
<p><span> buf = "00007f8ed0036700"</span></p>
<p><span> cp = <optimized out></span></p>
<p><span>#4 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3840</span></p>
<p><span> size = <optimized out></span></p>
<p><span> fb = <optimized out></span></p>
<p><span> nextchunk = <optimized out></span></p>
<p><span> nextsize = <optimized out></span></p>
<p><span> nextinuse = <optimized out></span></p>
<p><span> prevsize = <optimized out></span></p>
<p><span> bck = <optimized out></span></p>
<p><span> fwd = <optimized out></span></p>
<p><span> errstr = <optimized out></span></p>
<p><span> locked = <optimized out></span></p>
<p><span>#5 0x00007f8f01334567 in switch_log_node_free (pnode=pnode@entry=0x7f8eb2b1f158) at src/switch_log.c:136</span></p>
<p><span> node = 0x7f8ed8012ab0</span></p>
<p><span>#6 0x00007f8eeb192a24 in read_packet (listener=listener@entry=0x7f8ebc027898, event=event@entry=0x7f8eb2b1f7f0, timeout=timeout@entry=0) at mod_event_socket.c:1361</span></p>
<p><span> dnode = 0x7f8ed8012ab0</span></p>
<p><span> do_sleep = <optimized out></span></p>
<p><span> mlen = 0</span></p>
<p><span> bytes = 0</span></p>
<p><span> mbuf = 0x7f8ecc1ebfc0 ""</span></p>
<p><span> buf = "Content-Type: log/data\nContent-Length: 88\nLog-Level: 7\nText-Channel: 3\nLog-File: param_hps_strategy.cpp\nLog-Func: retrieve\nLog-Line: 115\nUser-Data: \347@\247\a\n\n\000\n\n\000\065-418f-a6d1-9dc8f48e0cf9\n\n\000\000\071\n\n\000c8f48e0cf9"...</span></p>
<p><span> len = 88</span></p>
<p><span> status = SWITCH_STATUS_BREAK</span></p>
<p><span> count = 0</span></p>
<p><span> elapsed = <optimized out></span></p>
<p><span> start = 1457966137</span></p>
<p><span> pop = 0x7f8ed8012ab0</span></p>
<p><span> ptr = 0x7f8ecc1ebfc0 ""</span></p>
<p><span> crcount = 0 '\000'</span></p>
<p><span> buf_len = 2048</span></p>
<p><span> channel = 0x0</span></p>
<p><span> clen = 0</span></p>
<p><span> __PRETTY_FUNCTION__ = "read_packet"</span></p>
<p><span> __func__ = "read_packet"</span></p>
<p><span>#7 0x00007f8eeb1988a0 in listener_run (thread=<optimized out>, obj=0x7f8ebc027898) at mod_event_socket.c:2719</span></p>
<p><span> listener = 0x7f8ebc027898</span></p>
<p><span> buf = '\000' <repeats 1023 times></span></p>
<p><span> len = 1024</span></p>
<p><span> status = <optimized out></span></p>
<p><span> event = 0x0</span></p>
<p><span> reply = "\000OK log level [7]", '\000' <repeats 493 times></span></p>
<p><span> session = 0x0</span></p>
<p><span> channel = 0x0</span></p>
<p><span> revent = 0x0</span></p>
<p><span> var = <optimized out></span></p>
<p><span> locked = 1</span></p>
<p><span> __PRETTY_FUNCTION__ = "listener_run"</span></p>
<p><span> __func__ = "listener_run"</span></p>
<p><span>#8 0x00007f8f01544430 in dummy_worker (opaque=0x7f8eb2be4868) at threadproc/unix/thread.c:151</span></p>
<p><span> thread = 0x7f8eb2be4868</span></p>
<p><span>#9 0x00007f8f00ff0182 in start_thread (arg=0x7f8eb2b20700) at pthread_create.c:312</span></p>
<p><span> __res = <optimized out></span></p>
<p><span> pd = 0x7f8eb2b20700</span></p>
<p><span> now = <optimized out></span></p>
<p><span> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140250860095232, -640791540281233069, 0, 0, 140250860095936, 140250860095232, 578173923610734931, 577994035108262227}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}</span></p>
<p><span> not_first_call = <optimized out></span></p>
<p><span> pagesize_m1 = <optimized out></span></p>
<p><span> sp = <optimized out></span></p>
<p><span> freesize = <optimized out></span></p>
<p><span> __PRETTY_FUNCTION__ = "start_thread"</span></p>
<p><span>#10 0x00007f8f00d1d47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111</span></p>
<p><span>No locals</span></p></div>
</div></div>
</blockquote><br><br>-- <br><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Anthony Minessale II ♬ @anthmfs ♬ @FreeSWITCH ♬<div><br><div>☞ <a href="http://freeswitch.org/" target="_blank">http://freeswitch.org/</a> ☞ <a href="http://cluecon.com/" target="_blank">http://cluecon.com/</a> ☞ <a href="http://twitter.com/FreeSWITCH" target="_blank">http://twitter.com/FreeSWITCH</a></div><div><div>☞ <a href="http://irc.freenode.net" target="_blank">irc.freenode.net</a> #freeswitch ☞ <u><a href="http://freeswitch.org/g+" target="_blank">http://freeswitch.org/g+</a></u><br><br></div><div>ClueCon Weekly Development Call <br></div><div>☎ <a href="javascript:_e(%7B%7D,'cvml','sip:888@conference.freeswitch.org');" target="_blank">sip:888@conference.freeswitch.org</a> ☎ +19193869900 </div><div><br></div></div></div><div><a href="https://www.youtube.com/watch?v=9XXgW34t40s" style="color:rgb(17,85,204);font-size:12.8000001907349px" target="_blank">https://www.youtube.com/watch?v=9XXgW34t40s</a></div><div><a href="https://www.youtube.com/watch?v=NLaDpGQuZDA" target="_blank">https://www.youtube.com/watch?v=NLaDpGQuZDA</a><br></div></div></div></div></div></div><br>
</blockquote><br><br>-- <br>mandra<br>c:410.258.5281<br>