how to locate coredump while lua invoking C?
this lib gives you a choice.
for example. if you get a core file, get signal num, such as SIGSEGV
first, get SIGSEGV num in your shell, run kill -l SEGV, may be 11 in zsh
in lua:
lcoredump = require "lcoredump"
lcoredump.register(11)
you can call lcoredump.freopen to redirect stderr to a log file, see test.lua
before coredump file created, traceback for lua & c would be print into stderr.
lcoredump.set_show_var(flag) if flag is true, every variable in each stack frame would be shown, but easy to crash here again.
see test.lua
press Ctrl-C(SIGINT) or Ctrl-\(SIGTERM) please, traceback would be dumped to stderr
^Cfull traceback:
[0]test.lua:12: in function foo
tbl(table) : 0x7ffaa940a1f0
num(number) : 1
str(string) : fdsa
v_bool(boolean) : true
v_nil(nil) : nil
[1]test.lua:16: in function bar
func(function) : 0x7ffaa9409a80 [email protected]:10
s(string) : hello world!
[2]test.lua:19: in main chunk
[3][C]: ?
(*temporary)(userdata) : 0x7fff548063d8
(*temporary)(function) : 0x7ffaa9409020 defined@C
0 lcoredump.so 0x000000010b45acf6 signal_handler + 1926
1 libsystem_platform.dylib 0x00007fffd0e0cbba _sigtramp + 26
2 ??? 0x000000011718609c 0x0 + 4682440860
3 libsystem_c.dylib 0x00007fffd0c78797 __srefill1 + 24
4 libsystem_c.dylib 0x00007fffd0c7205a fgets + 103
5 lua 0x000000010b414483 read_line + 83
6 lua 0x000000010b414569 g_read + 57
7 lua 0x000000010b4022ac luaD_precall + 588
8 lua 0x000000010b40eea0 luaV_execute + 2720
9 lua 0x000000010b4029b2 luaD_call + 98
10 lua 0x000000010b401d95 luaD_rawrunprotected + 85
11 lua 0x000000010b402cca luaD_pcall + 58
12 lua 0x000000010b3fd82a lua_pcall + 282
13 lua 0x000000010b3fa68d docall + 93
14 lua 0x000000010b3fa0cf pmain + 1567
15 lua 0x000000010b4022ac luaD_precall + 588
16 lua 0x000000010b4029a1 luaD_call + 81
17 lua 0x000000010b401d95 luaD_rawrunprotected + 85
18 lua 0x000000010b402cca luaD_pcall + 58
19 lua 0x000000010b3fd89b lua_cpcall + 43
20 lua 0x000000010b3f99b1 main + 65
21 libdyld.dylib 0x00007fffd0bff255 start + 1
22 ??? 0x0000000000000002 0x0 + 2