sanchayanmaity/xv6-cs450
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for vs while

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rsc 2006-09-06 18:47:51 +00:00
parent 236d33698b
commit db8fb62e4d
5 changed files with 5 additions and 5 deletions
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2
bio.c
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@ -39,7 +39,7 @@ getblk(uint dev, uint sector)
acquire(&buf_table_lock); acquire(&buf_table_lock);
while(1){ for(;;){
for(b = bufhead.next; b != &bufhead; b = b->next) for(b = bufhead.next; b != &bufhead; b = b->next)
if((b->flags & (B_BUSY|B_VALID)) && b->dev == dev && b->sector == sector) if((b->flags & (B_BUSY|B_VALID)) && b->dev == dev && b->sector == sector)
break; break;

2
bootmain.c
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@ -58,7 +58,7 @@ cmain(void)
bad: bad:
outw(0x8A00, 0x8A00); outw(0x8A00, 0x8A00);
outw(0x8A00, 0x8E00); outw(0x8A00, 0x8E00);
while(1) for(;;)
; ;
} }

2
fs.c
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@ -479,7 +479,7 @@ namei(char *path, int mode, uint *ret_off, char **ret_last, struct inode **ret_i
while(*cp == '/') while(*cp == '/')
cp++; cp++;
while(1){ for(;;){
if(*cp == '\0'){ if(*cp == '\0'){
if(mode == NAMEI_LOOKUP) if(mode == NAMEI_LOOKUP)
return dp; return dp;

2
init.c
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@ -20,7 +20,7 @@ main(void)
dup(0); dup(0);
dup(0); dup(0);
while(1){ for(;;){
pid = fork(); pid = fork();
if(pid < 0){ if(pid < 0){
puts("init: fork failed\n"); puts("init: fork failed\n");

2
syscall.c
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@ -62,7 +62,7 @@ checkstring(uint s)
char c; char c;
int len = 0; int len = 0;
while(1){ for(;;){
if(fetchbyte(curproc[cpu()], s, &c) < 0) if(fetchbyte(curproc[cpu()], s, &c) < 0)
return -1; return -1;
if(c == '\0') if(c == '\0')