JehanneOS/mksh
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isolate all knowledge of the area-based allocator from the rest of the code

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cost: bss -= (0, 0, 16, 16); text += (520, 504, 516, 480)
[ gcc,pcc X full,small ]
This commit is contained in:
tg
2008-11-12 00:27:57 +00:00
parent c80c28633b
commit 246b762af7
6 changed files with 44 additions and 41 deletions
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19
sh.h
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@@ -103,7 +103,7 @@
#define __SCCSID(x) __IDSTRING(sccsid,x)
#ifdef EXTERN
__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.253 2008/11/11 23:50:30 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.254 2008/11/12 00:27:56 tg Exp $");
#endif
#define MKSH_VERSION "R36 2008/11/10"
@@ -389,20 +389,15 @@ char *ucstrstr(char *, const char *);
#define MKSH_NOVI
#endif
struct TArea {
struct link *freelist; /* free list */
};
typedef struct TArea *PArea;
extern struct TArea aperm; /* permanent object space */
#define APERM &aperm
#define ATEMP &e->area
EXTERN PArea APERM; /* permanent object space */
#define ATEMP e->areap
/*
* parsing & execution environment
*/
extern struct env {
struct TArea area; /* temporary allocation area */
PArea areap; /* temporary allocation area */
struct block *loc; /* local variables and functions */
short *savefd; /* original redirected fds */
struct env *oenv; /* link to previous environment */
@@ -857,7 +852,7 @@ struct arg_info {
* activation record for function blocks
*/
struct block {
struct TArea area; /* area to allocate things */
PArea areap; /* area to allocate things */
const char **argv;
int argc;
int flags; /* see BF_* */
@@ -1253,8 +1248,8 @@ EXTERN int histsize; /* history size */
EXTERN struct timeval j_usrtime, j_systime;
/* alloc.c */
PArea ainit(PArea);
void afreeall(PArea);
PArea anew(void); /* cannot fail */
void adelete(PArea *);
void *alloc(size_t, PArea); /* cannot fail */
void *aresize(void *, size_t, PArea);
void afree(void *, PArea); /* can take NULL */