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| author | Lukas Larsson <[email protected]> | 2014-12-19 10:53:27 +0100 |
|---|---|---|
| committer | Lukas Larsson <[email protected]> | 2014-12-19 10:53:27 +0100 |
| commit | 3e3ef7b16fa03a7b9f4e5376387750a69957719f (patch) | |
| tree | 40d74a3d6ccd8a4faa5c7194979584fa67517ea1 /erts/emulator/sys/unix/erl_unix_sys.h | |
| parent | a4d72d2cae3a9bd3f0dccdb663f70d54a45fe10f (diff) | |
| parent | bd4b900c09308a6c3ab41e3a2070cb90410ee01d (diff) | |
| download | otp-3e3ef7b16fa03a7b9f4e5376387750a69957719f.tar.gz otp-3e3ef7b16fa03a7b9f4e5376387750a69957719f.tar.bz2 otp-3e3ef7b16fa03a7b9f4e5376387750a69957719f.zip | |
Merge branch 'lukas/erts/crashdump_improvements/OTP-12377'
* lukas/erts/crashdump_improvements/OTP-12377:
erts: Make main thread safe from pipe closed event
erts: Improve crash dumps
erts: Rename sys_sigset to sys_signal
erts: Introduce thread suspend functions
erts: Remove usage of QUANTIFY signal
erts: Add support for thread names
ets: Increase data available in crash dumps and ets:info
erts: Start compilation of beam_emu earlier
Diffstat (limited to 'erts/emulator/sys/unix/erl_unix_sys.h')
| -rw-r--r-- | erts/emulator/sys/unix/erl_unix_sys.h | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/erts/emulator/sys/unix/erl_unix_sys.h b/erts/emulator/sys/unix/erl_unix_sys.h index b6bca5c0f4..f0050db114 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> @@ -211,13 +211,8 @@ int sys_stop_hrvtime(void); #define SYS_CLOCK_RESOLUTION 1 /* These are defined in sys.c */ -#if defined(SIG_SIGSET) /* Old SysV */ -RETSIGTYPE (*sys_sigset())(); -#elif defined(SIG_SIGNAL) /* Old BSD */ -RETSIGTYPE (*sys_sigset())(); -#else -RETSIGTYPE (*sys_sigset(int, RETSIGTYPE (*func)(int)))(int); -#endif +typedef void (*SIGFUNC)(int); +extern SIGFUNC sys_signal(int, SIGFUNC); extern void sys_sigrelease(int); extern void sys_sigblock(int); extern void sys_stop_cat(void); @@ -354,4 +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 */ |