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rio: eleminate temporary allocations before frinsert() and in namecomplete()

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frinsert() shouldnt modify the runes passed and the
buffer isnt going to be modified my us during the call
so removing the temporary copies.

namecomplete() makes utf-8 copies of the rune strings so
theres no need to copy the runes.
This commit is contained in:
cinap_lenrek 2013-11-05 08:00:26 +01:00
parent f73bf5f90d
commit 118cf5e36a
1 changed files with 9 additions and 17 deletions
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26
sys/src/cmd/rio/wind.c
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@ -569,11 +569,9 @@ namecomplete(Window *w)
if(w->q0<w->nr && w->r[w->q0]>' ') /* must be at end of word */
return;
nstr = windfilewidth(w, w->q0, TRUE);
str = runemalloc(nstr);
runemove(str, w->r+(w->q0-nstr), nstr);
str = w->r+(w->q0-nstr);
npath = windfilewidth(w, w->q0-nstr, FALSE);
path = runemalloc(npath);
runemove(path, w->r+(w->q0-nstr-npath), npath);
path = w->r+(w->q0-nstr-npath);
/* is path rooted? if not, we need to make it relative to window path */
if(npath>0 && path[0]=='/')
@ -585,6 +583,8 @@ namecomplete(Window *w)
root = w->dir;
dir = smprint("%s/%.*S", root, npath, path);
}
if(dir == nil)
return;
/* run in background, winctl will collect the result on w->complete chan */
job = emalloc(sizeof *job);
@ -593,9 +593,6 @@ namecomplete(Window *w)
job->win = w;
incref(w);
proccreate(completeproc, job, STACK);
free(path);
free(str);
}
void
@ -1640,10 +1637,8 @@ wsetorigin(Window *w, uint org, int exact)
fixup = 1; /* frdelete can leave end of last line in wrong selection mode; it doesn't know what follows */
}else if(a<0 && -a<w->nchars){
n = w->org - org;
r = runemalloc(n);
runemove(r, w->r+org, n);
r = w->r+org;
frinsert(w, r, r+n, 0);
free(r);
}else
frdelete(w, 0, w->nchars);
w->org = org;
@ -1764,16 +1759,14 @@ wfill(Window *w)
Rune *rp;
int i, n, m, nl;
if(w->lastlinefull)
return;
rp = malloc(messagesize);
do{
while(w->lastlinefull == FALSE){
n = w->nr-(w->org+w->nchars);
if(n == 0)
break;
if(n > 2000) /* educated guess at reasonable amount */
n = 2000;
runemove(rp, w->r+(w->org+w->nchars), n);
rp = w->r+(w->org+w->nchars);
/*
* it's expensive to frinsert more than we need, so
* count newlines.
@ -1788,8 +1781,7 @@ wfill(Window *w)
}
}
frinsert(w, rp, rp+i, w->nchars);
}while(w->lastlinefull == FALSE);
free(rp);
}
}
char*