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author | Lukas Larsson <[email protected]> | 2014-12-04 11:09:06 +0100 |
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committer | Lukas Larsson <[email protected]> | 2014-12-19 10:39:52 +0100 |
commit | ffd0153e6dffcc29cf79d0191860047dba0438bb (patch) | |
tree | 31a0ced512b5b243caa5933c73aa4dc70d6c0c87 /erts/emulator/sys/unix/erl_unix_sys.h | |
parent | e2a600341324d2ce3689119f8fd61b248702d79f (diff) | |
download | otp-ffd0153e6dffcc29cf79d0191860047dba0438bb.tar.gz otp-ffd0153e6dffcc29cf79d0191860047dba0438bb.tar.bz2 otp-ffd0153e6dffcc29cf79d0191860047dba0438bb.zip |
erts: Improve crash dumps
This commit improves crash dumps in several ways:
* Suspends schedulers to get a current snapshot
* Dumps information about scheduler
* Dumps stack trace of current running process
(including Garbing processes)
Diffstat (limited to 'erts/emulator/sys/unix/erl_unix_sys.h')
-rw-r--r-- | erts/emulator/sys/unix/erl_unix_sys.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/erts/emulator/sys/unix/erl_unix_sys.h b/erts/emulator/sys/unix/erl_unix_sys.h index bc55fab8fb..1932e97742 100644 --- a/erts/emulator/sys/unix/erl_unix_sys.h +++ b/erts/emulator/sys/unix/erl_unix_sys.h @@ -45,7 +45,7 @@ #include <fcntl.h> #include "erl_errno.h" #include <signal.h> - +#include <setjmp.h> #if HAVE_SYS_SOCKETIO_H # include <sys/socketio.h> @@ -349,4 +349,28 @@ extern int exit_async(void); #define ERTS_EXIT_AFTER_DUMP _exit +#if !defined(__APPLE__) && !defined(__MACH__) +/* Some OS X versions do not allow (ab)using signal handlers like this */ +#define ERTS_HAVE_TRY_CATCH 1 + +/* We try to simulate a try catch in C with the help of signal handlers. + * Only use this as a very last resort, as it is not very portable and + * quite unstable. It is also not thread safe, so make sure that only + * one thread can call this at a time! + */ +extern void erts_sys_sigsegv_handler(int); +extern jmp_buf erts_sys_sigsegv_jmp; +#define ERTS_SYS_TRY_CATCH(EXPR,CATCH) \ + do { \ + SIGFUNC prev_handler = sys_signal(SIGSEGV, \ + erts_sys_sigsegv_handler); \ + if (!setjmp(erts_sys_sigsegv_jmp)) { \ + EXPR; \ + } else { \ + CATCH; \ + } \ + sys_signal(SIGSEGV,prev_handler); \ + } while(0) +#endif + #endif /* #ifndef _ERL_UNIX_SYS_H */ |