Retro68/gcc/libgo/runtime/go-defer.h
2014-09-21 19:33:12 +02:00

48 lines
1.5 KiB
C

/* go-defer.h -- the defer stack.
Copyright 2010 The Go Authors. All rights reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file. */
struct __go_panic_stack;
/* The defer stack is a list of these structures. */
struct __go_defer_stack
{
/* The next entry in the stack. */
struct __go_defer_stack *__next;
/* The stack variable for the function which called this defer
statement. This is set to 1 if we are returning from that
function, 0 if we are panicing through it. */
_Bool *__frame;
/* The value of the panic stack when this function is deferred.
This function can not recover this value from the panic stack.
This can happen if a deferred function uses its own defer
statement. */
struct __go_panic_stack *__panic;
/* The function to call. */
void (*__pfn) (void *);
/* The argument to pass to the function. */
void *__arg;
/* The return address that a recover thunk matches against. This is
set by __go_set_defer_retaddr which is called by the thunks
created by defer statements. */
const void *__retaddr;
/* Set to true if a function created by reflect.MakeFunc is
permitted to recover. The return address of such a function
function will be somewhere in libffi, so __retaddr is not
useful. */
_Bool __makefunc_can_recover;
/* Set to true if this defer stack entry should be freed when
done. */
_Bool __free;
};