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fixed bugs in tzset and ttyslot, adapted malloc to allocate in bigger chunks

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This commit is contained in:
ceriel 1987-08-19 14:44:54 +00:00
parent d747651237
commit cc524c3d9a
3 changed files with 11 additions and 7 deletions
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14
lang/cem/libcc/gen/malloc.c
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@ -1,6 +1,6 @@
/* $Header$ */ /* $Header$ */
#define CLICK_SIZE 16 #define CLICK_SIZE 4096
#if EM_WSIZE == EM_PSIZE #if EM_WSIZE == EM_PSIZE
typedef unsigned int vir_bytes; typedef unsigned int vir_bytes;
#else #else
@ -13,7 +13,7 @@ extern bcopy();
#define NEXT(p) (* (char **) (p)) #define NEXT(p) (* (char **) (p))
#ifdef pdp #ifdef pdp
#define BUGFIX 64 #define BUGFIX 64 /* cannot set break in top 64 bytes */
#else #else
#define BUGFIX 0 #define BUGFIX 0
#endif #endif
@ -25,11 +25,15 @@ static grow(len)
unsigned len; unsigned len;
{ {
register char *p; register char *p;
register int click = CLICK_SIZE;
p = (char *) ALIGN((vir_bytes) top + sizeof(char *) + len, CLICK_SIZE) while (click >= 4) {
p = (char *) ALIGN((vir_bytes) top + sizeof(char *) + len, click)
+ BUGFIX; + BUGFIX;
if (p < top || brk(p - BUGFIX) < 0) if (p > top && brk(p - BUGFIX) >= 0) break;
return(0); click >>= 1;
}
if (click < 4) return(0);
top = p - (BUGFIX + sizeof(char *)); top = p - (BUGFIX + sizeof(char *));
for (p = bottom; NEXT(p) != 0; p = (char *) (* (vir_bytes *) p & ~BUSY)) for (p = bottom; NEXT(p) != 0; p = (char *) (* (vir_bytes *) p & ~BUSY))
; ;

3
lang/cem/libcc/gen/ttyslot.c
View file

@ -60,13 +60,14 @@ ttyslot()
#else #else
for (;;) { for (;;) {
tp = buf; tp = buf;
for (;;) { for (;;tp++) {
if (read(fd, tp, 1) != 1) { if (read(fd, tp, 1) != 1) {
close(fd); close(fd);
return 0; return 0;
} }
if (*tp == '\n' || tp >= &buf[31]) { if (*tp == '\n' || tp >= &buf[31]) {
*tp = 0; *tp = 0;
if (tp < buf+2) buf[2] = '\0';
tp = buf+2; tp = buf+2;
break; break;
} }

1
lang/cem/libcc/gen/tzset.c
View file

@ -57,7 +57,6 @@ tzset()
int sign = 1; int sign = 1;
strncpy(__tzname[0], p, 3); strncpy(__tzname[0], p, 3);
p += 3;
if (*(p += 3) == '-') { if (*(p += 3) == '-') {
sign = -1; sign = -1;
p++; p++;