(gdb) bt
#0 0x00007f6fac3e1943 in select () from /lib64/libc.so.6
#1 0x00007f6faeeff135 in apr_sleep (t=<optimized out>) at time/unix/time.c:246
#2 0x00007f6faec35f55 in pool_thread (thread=<optimized out>, obj=<optimized out>) at src/switch_core_memory.c:569
#3 0x00007f6faeefdaf0 in dummy_worker (opaque=0x7f6faf8ddc40) at threadproc/unix/thread.c:151
#4 0x00007f6facd10dc5 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f6fac3ea21d in clone () from /lib64/libc.so.6
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}