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| author | Ulrich Drepper <drepper@redhat.com> | 1997-11-19 22:57:20 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1997-11-19 22:57:20 +0000 |
| commit | 0982ec01496269c07052881626b11754e578ff07 (patch) | |
| tree | c1f6c0be12eab539796da8aa6f4502ce3c410c26 | |
| parent | a865a9eded616ea445f34289107029b5f68f24e1 (diff) | |
| download | glibc-0982ec01496269c07052881626b11754e578ff07.tar.gz glibc-0982ec01496269c07052881626b11754e578ff07.tar.xz glibc-0982ec01496269c07052881626b11754e578ff07.zip | |
(obstack_empty_p): New definition.
| -rw-r--r-- | malloc/obstack.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/malloc/obstack.h b/malloc/obstack.h index b60828b6ae..e7ae6959e5 100644 --- a/malloc/obstack.h +++ b/malloc/obstack.h @@ -104,8 +104,8 @@ Summary: /* Don't do the contents of this file more than once. */ -#ifndef __OBSTACK_H__ -#define __OBSTACK_H__ +#ifndef _OBSTACK_H +#define _OBSTACK_H 1 #ifdef __cplusplus extern "C" { @@ -379,6 +379,11 @@ __extension__ \ _obstack_newchunk (__o, __len); \ (void) 0; }) +#define obstack_empty_p(OBSTACK) \ + __extension__ \ + ({ struct obstack *__o = (OBSTACK); \ + (__o->chunk->prev == 0 && __o->next_free - __o->chunk->contents == 0); }) + #define obstack_grow(OBSTACK,where,length) \ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ @@ -492,6 +497,9 @@ __extension__ \ #define obstack_room(h) \ (unsigned) ((h)->chunk_limit - (h)->next_free) +#define obstack_empty_p(h) \ + ((h)->chunk->prev == 0 && (h)->next_free - (h)->chunk->contents == 0) + /* Note that the call to _obstack_newchunk is enclosed in (..., 0) so that we can avoid having void expressions in the arms of the conditional expression. @@ -587,4 +595,4 @@ __extension__ \ } /* C++ */ #endif -#endif /* not __OBSTACK_H__ */ +#endif /* obstack.h */ |