NAME

siglongjmp - non-local goto with signal handling

SYNOPSIS

[CX] #include <setjmp.h>

void siglongjmp(sigjmp_buf env, int val);

DESCRIPTION

The siglongjmp() function shall be equivalent to the longjmp() function, except as follows:

• References to setjmp() shall be equivalent to sigsetjmp().

• The siglongjmp() function shall restore the saved signal mask if and only if the env argument was initialized by a call to sigsetjmp() with a non-zero savemask argument.

RETURN VALUE

After siglongjmp() is completed, program execution shall continue as if the corresponding invocation of sigsetjmp() had just returned the value specified by val. The siglongjmp() function shall not cause sigsetjmp() to return 0; if val is 0, sigsetjmp() shall return the value 1.

ERRORS

No errors are defined.

EXAMPLES

None.

APPLICATION USAGE

The distinction between setjmp() or longjmp() and sigsetjmp() or siglongjmp() is only significant for programs which use sigaction(), sigprocmask(), or sigsuspend().

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

longjmp(), setjmp(), sigprocmask(), sigsetjmp(), sigsuspend(), the Base Definitions volume of IEEE Std 1003.1-2001, <setjmp.h>

CHANGE HISTORY

First released in Issue 3. Included for alignment with the ISO POSIX-1 standard.

Issue 5

The DESCRIPTION is updated for alignment with the POSIX Threads Extension.

Issue 6

The DESCRIPTION is rewritten in terms of longjmp().

The SYNOPSIS is marked CX since the presence of this function in the <setjmp.h> header is an extension over the ISO C standard.