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37 #ifndef _SYS__SIGALTSTACK_H_
38 #define _SYS__SIGALTSTACK_H_
40 #include <sys/_types.h>
44 #define __stack_t sigaltstack
46 typedef struct __stack_t stack_t;
48 #define SS_ONSTACK 0x0001 /* take signal on alternate stack */
49 #define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */
50 #define MINSIGSTKSZ __MINSIGSTKSZ /* minimum stack size */
51 #define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
55 * Structure used in sigaltstack call. Its definition is always
56 * needed for __ucontext. If __BSD_VISIBLE is defined, the structure
57 * tag is actually sigaltstack.
60 void *ss_sp; /* signal stack base */
61 __size_t ss_size; /* signal stack length */
62 int ss_flags; /* SS_DISABLE and/or SS_ONSTACK */
65 #endif /* !_SYS__SIGALTSTACK_H_ */