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cmd/pack: remove unused paging logic

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This is the remainder of https://golang.org/cl/4601051.

Partially addresses issue 2705.

R=golang-dev, r, bradfitz, minux.ma
CC=golang-dev
https://golang.org/cl/6354066
This commit is contained in:
Dave Cheney 2012-07-12 10:14:07 +10:00
parent 8a2a5013c9
commit eb1c03eacb
1 changed files with 6 additions and 57 deletions
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51
src/cmd/pack/ar.c
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@ -77,9 +77,7 @@ typedef struct Armember /* Temp file entry - one per archive member */
typedef struct Arfile /* Temp file control block - one per tempfile */
{
int paged; /* set when some data paged to disk */
char *fname; /* paging file name */
int fd; /* paging file descriptor */
vlong size;
Armember *head; /* head of member chain */
Armember *tail; /* tail of member chain */
@ -159,7 +157,6 @@ int bamatch(char*, char*);
int duplicate(char*, char**);
Armember *getdir(Biobuf*);
void getpkgdef(char**, int*);
int getspace(void);
void install(char*, Arfile*, Arfile*, Arfile*, int);
void loadpkgdata(char*, int);
void longt(Armember*);
@ -169,7 +166,6 @@ Arfile *newtempfile(char*);
Armember *newmember(void);
void objsym(Sym*, void*);
int openar(char*, int, int);
int page(Arfile*);
void pmode(long);
void rl(int);
void scanobj(Biobuf*, Arfile*, long);
@ -1534,23 +1530,7 @@ void
arstream(int fd, Arfile *ap)
{
Armember *bp;
int i;
char buf[8192];
if (ap->paged) { /* copy from disk */
seek(ap->fd, 0, 0);
for (;;) {
i = read(ap->fd, buf, sizeof(buf));
if (i < 0)
rderr();
if (i == 0)
break;
if (write(fd, buf, i) != i)
wrerr();
}
close(ap->fd);
ap->paged = 0;
}
/* dump the in-core buffers */
for (bp = ap->head; bp; bp = bp->next) {
if (!arwrite(fd, bp))
@ -1576,35 +1556,6 @@ arwrite(int fd, Armember *bp)
return 1;
}
/*
* Spill a member to a disk copy of a temp file
*/
int
page(Arfile *ap)
{
USED(ap);
sysfatal("page");
return 1;
}
/*
* try to reclaim space by paging. we try to spill the start, middle,
* and end files, in that order. there is no particular reason for the
* ordering.
*/
int
getspace(void)
{
if (astart && astart->head && page(astart))
return 1;
if (amiddle && amiddle->head && page(amiddle))
return 1;
if (aend && aend->head && page(aend))
return 1;
return 0;
}
void
arfree(Arfile *ap) /* free a member buffer */
{
@ -1633,13 +1584,11 @@ armalloc(int n)
if(n&1)
n++;
do {
cp = malloc(n);
if (cp) {
memset(cp, 0, n);
return cp;
}
} while (getspace());
fprint(2, "pack: out of memory\n");
exits("malloc");
return 0;