diff options
Diffstat (limited to 'signal.c')
-rw-r--r-- | signal.c | 18 |
1 files changed, 10 insertions, 8 deletions
@@ -47,11 +47,6 @@ typedef int rb_atomic_t; # define NSIG (_SIGMAX + 1) /* For QNX */ #endif -#if defined(SIGSEGV) && defined(HAVE_SIGALTSTACK) -#define USE_SIGALTSTACK -int is_altstack_defined = 0; -#endif - static const struct signals { const char *signm; int signo; @@ -415,6 +410,10 @@ static struct { typedef RETSIGTYPE (*sighandler_t)(int); #ifdef POSIX_SIGNAL +#if defined(SIGSEGV) && defined(HAVE_SIGALTSTACK) +#define USE_SIGALTSTACK +#endif + #ifdef USE_SIGALTSTACK #ifdef SIGSTKSZ #define ALT_STACK_SIZE SIGSTKSZ @@ -422,14 +421,17 @@ typedef RETSIGTYPE (*sighandler_t)(int); #define ALT_STACK_SIZE (4*1024) #endif /* alternate stack for SIGSEGV */ -static void register_sigaltstack() { +static void +register_sigaltstack() +{ + static int is_altstack_defined = 0; stack_t newSS, oldSS; - if(is_altstack_defined) + if (is_altstack_defined) return; newSS.ss_sp = malloc(ALT_STACK_SIZE); - if(newSS.ss_sp == NULL) + if (newSS.ss_sp == NULL) /* should handle error */ rb_bug("register_sigaltstack. malloc error\n"); newSS.ss_size = ALT_STACK_SIZE; |