implemented blocking reads (asynchroneous R-message handling)

This commit is contained in:
Anselm R. Garbe 2006-01-29 01:18:15 +02:00
parent 580f296f49
commit a18421ee0b
3 changed files with 256 additions and 175 deletions

View File

@ -46,17 +46,6 @@ enum {
Fcolor
};
typedef struct Map Map;
struct Map {
unsigned int fid;
Qid qid;
Map *next;
};
typedef struct {
Map *maps;
Fcall fcall;
} Req;
typedef struct {
char data[256];
char color[24];
@ -83,7 +72,7 @@ static XFontStruct *xfont;
static GC gc;
static Window win;
static XRectangle geom;
static Pixmap pmap;
static Pixm pm;
static Draw zero_draw = { 0 };
*/
@ -215,14 +204,6 @@ name_to_type(char *name)
return -1;
}
static Map *
fid_to_map(Map *maps, unsigned int fid)
{
Map *m;
for(m = maps; m && (m->fid != fid); m = m->next);
return m;
}
static int
mkqid(Qid *dir, char *wname, Qid *new)
{
@ -252,9 +233,11 @@ mkqid(Qid *dir, char *wname, Qid *new)
new->path = mkqpath(Ditem, i);
}
break;
case Fdata: /* note, Fdata needs to be before Fcolor, fallthrough */
if(!i)
return -1;
case Fcolor:
case Fdata:
if(!i || i > nitem)
if(i > nitem)
return -1;
default:
new->type = IXP_QTFILE;
@ -265,91 +248,87 @@ mkqid(Qid *dir, char *wname, Qid *new)
}
static int
xversion(Req *r)
xversion(IXPReq *r)
{
if(strncmp(r->fcall.version, IXP_VERSION, strlen(IXP_VERSION))) {
if(strncmp(r->fcall->version, IXP_VERSION, strlen(IXP_VERSION))) {
errstr = "9P versions differ";
return -1;
} else if(r->fcall.maxmsg > IXP_MAX_MSG)
r->fcall.maxmsg = IXP_MAX_MSG;
r->fcall.id = RVERSION;
} else if(r->fcall->maxmsg > IXP_MAX_MSG)
r->fcall->maxmsg = IXP_MAX_MSG;
r->fcall->id = RVERSION;
return 0;
}
static int
xattach(Req *r)
xattach(IXPReq *r)
{
Map *maps = r->maps;
Map *new = cext_emallocz(sizeof(Map));
r->maps = new;
new->next = maps;
IXPMap *new = cext_emallocz(sizeof(IXPMap));
new->qid = root_qid;
new->fid = r->fcall.fid;
r->fcall.id = RATTACH;
r->fcall.qid = root_qid;
new->fid = r->fcall->fid;
r->map = ixp_server_attach_map(new, r->map, &r->mapsz);
r->fcall->id = RATTACH;
r->fcall->qid = root_qid;
return 0;
}
static int
xwalk(Req *r)
xwalk(IXPReq *r)
{
unsigned short nwqid = 0;
Qid dir = root_qid;
Map *map;
IXPMap *m;
if(!(map = fid_to_map(r->maps, r->fcall.fid))) {
if(!(m = ixp_server_fid2map(r, r->fcall->fid))) {
errstr = "no dir associated with fid";
return -1;
}
if(r->fcall.fid != r->fcall.newfid
&& (fid_to_map(r->maps, r->fcall.newfid))) {
if(r->fcall->fid != r->fcall->newfid
&& (ixp_server_fid2map(r, r->fcall->newfid))) {
errstr = "fid alreay in use";
return -1;
}
if(r->fcall.nwname) {
dir = map->qid;
for(nwqid = 0; (nwqid < r->fcall.nwname)
&& !mkqid(&dir, r->fcall.wname[nwqid], &r->fcall.wqid[nwqid]); nwqid++)
dir = r->fcall.wqid[nwqid];
if(r->fcall->nwname) {
dir = m->qid;
for(nwqid = 0; (nwqid < r->fcall->nwname)
&& !mkqid(&dir, r->fcall->wname[nwqid], &r->fcall->wqid[nwqid]); nwqid++)
dir = r->fcall->wqid[nwqid];
if(!nwqid) {
errstr = "file not found";
return -1;
}
}
/* a fid will only be valid, if the walk was complete */
if(nwqid == r->fcall.nwname) {
if(r->fcall.fid != r->fcall.newfid) {
Map *maps = r->maps;
map = r->maps = cext_emallocz(sizeof(Map));
map->next = maps;
if(nwqid == r->fcall->nwname) {
if(r->fcall->fid != r->fcall->newfid) {
m = cext_emallocz(sizeof(IXPMap));
r->map = ixp_server_attach_map(m, r->map, &r->mapsz);
}
map->qid = dir;
map->fid = r->fcall.newfid;
m->qid = dir;
m->fid = r->fcall->newfid;
}
r->fcall.id = RWALK;
r->fcall.nwqid = nwqid;
r->fcall->id = RWALK;
r->fcall->nwqid = nwqid;
return 0;
}
static int
xopen(Req *r)
xopen(IXPReq *r)
{
Map *map = fid_to_map(r->maps, r->fcall.fid);
IXPMap *m = ixp_server_fid2map(r, r->fcall->fid);
if(!map) {
if(!m) {
errstr = "invalid fid";
return -1;
}
if(!(r->fcall.mode | IXP_OREAD) && !(r->fcall.mode | IXP_OWRITE)) {
fprintf(stderr, "got mode 0x%x\n", r->fcall.mode);
if(!(r->fcall->mode | IXP_OREAD) && !(r->fcall->mode | IXP_OWRITE)) {
fprintf(stderr, "got mode 0x%x\n", r->fcall->mode);
errstr = "mode not supported";
return -1;
}
r->fcall.id = ROPEN;
r->fcall.qid = map->qid;
r->fcall.iounit =
r->fcall.maxmsg - (sizeof(unsigned char) + sizeof(unsigned short) + 2 * sizeof(unsigned int));
r->fcall->id = ROPEN;
r->fcall->qid = m->qid;
r->fcall->iounit =
r->fcall->maxmsg - (sizeof(unsigned char) + sizeof(unsigned short) + 2 * sizeof(unsigned int));
return 0;
}
@ -369,21 +348,21 @@ mkstat(Stat *stat, Qid *dir, char *name, unsigned long long length, unsigned int
}
static int
xremove(Req *r)
xremove(IXPReq *r)
{
Map *map = fid_to_map(r->maps, r->fcall.fid);
IXPMap *m = ixp_server_fid2map(r, r->fcall->fid);
unsigned short i;
if(!map) {
if(!m) {
errstr = "invalid fid";
return -1;
}
i = qpath_item(map->qid.path);
if((qpath_type(map->qid.path) == Ditem) && i && (i < nitem)) {
i = qpath_item(m->qid.path);
if((qpath_type(m->qid.path) == Ditem) && i && (i < nitem)) {
Item *it = item[i];
detach_item(it);
free(it);
r->fcall.id = RREMOVE;
r->fcall->id = RREMOVE;
return 0;
}
errstr = "permission denied";
@ -391,39 +370,39 @@ xremove(Req *r)
}
static int
xread(Req *r)
xread(IXPReq *r)
{
Stat stat;
Map *map = fid_to_map(r->maps, r->fcall.fid);
unsigned char *p = r->fcall.data;
IXPMap *m = ixp_server_fid2map(r, r->fcall->fid);
unsigned char *p = r->fcall->data;
unsigned short i;
char buf[32];
if(!map) {
if(!m) {
errstr = "invalid fid";
return -1;
}
i = qpath_item(map->qid.path);
r->fcall.count = 0; /* EOF by default */
if(!r->fcall.offset) {
switch (qpath_type(map->qid.path)) {
i = qpath_item(m->qid.path);
r->fcall->count = 0; /* EOF by default */
if(!r->fcall->offset) {
switch (qpath_type(m->qid.path)) {
case Droot:
if(align == SOUTH || align == NORTH)
r->fcall.count = mkstat(&stat, &root_qid, "display", 6, DMREAD | DMWRITE);
r->fcall->count = mkstat(&stat, &root_qid, "display", 6, DMREAD | DMWRITE);
else
r->fcall.count = mkstat(&stat, &root_qid, "display", 5, DMREAD | DMWRITE); /* none */
r->fcall->count = mkstat(&stat, &root_qid, "display", 5, DMREAD | DMWRITE); /* none */
p = ixp_enc_stat(p, &stat);
r->fcall.count += mkstat(&stat, &root_qid, "font", strlen(font), DMREAD | DMWRITE);
r->fcall->count += mkstat(&stat, &root_qid, "font", strlen(font), DMREAD | DMWRITE);
p = ixp_enc_stat(p, &stat);
r->fcall.count += mkstat(&stat, &root_qid, "new", 0, DMDIR | DMREAD | DMEXEC);
r->fcall->count += mkstat(&stat, &root_qid, "new", 0, DMDIR | DMREAD | DMEXEC);
p = ixp_enc_stat(p, &stat);
r->fcall.count += mkstat(&stat, &root_qid, "event", 0, DMREAD);
r->fcall->count += mkstat(&stat, &root_qid, "event", 0, DMREAD);
p = ixp_enc_stat(p, &stat);
r->fcall.count += mkstat(&stat, &root_qid, "default", 0, DMDIR | DMREAD | DMEXEC);
r->fcall->count += mkstat(&stat, &root_qid, "default", 0, DMDIR | DMREAD | DMEXEC);
p = ixp_enc_stat(p, &stat);
for(i = 1; i < nitem; i++) {
snprintf(buf, sizeof(buf), "%u", i);
r->fcall.count += mkstat(&stat, &root_qid, buf, 0, DMDIR | DMREAD | DMEXEC);
r->fcall->count += mkstat(&stat, &root_qid, buf, 0, DMDIR | DMREAD | DMEXEC);
p = ixp_enc_stat(p, &stat);
}
break;
@ -431,7 +410,7 @@ xread(Req *r)
if(i > nitem)
goto error_xread;
if(!i) {
r->fcall.count = mkstat(&stat, &root_qid, "color", 24, DMREAD | DMWRITE);
r->fcall->count = mkstat(&stat, &root_qid, "color", 24, DMREAD | DMWRITE);
p = ixp_enc_stat(p, &stat);
break;
}
@ -439,9 +418,9 @@ xread(Req *r)
if(i == nitem)
new_item();
Qid dir = {IXP_QTDIR, 0, mkqpath(Ditem, i)};
r->fcall.count = mkstat(&stat, &dir, "color", 24, DMREAD | DMWRITE);
r->fcall->count = mkstat(&stat, &dir, "color", 24, DMREAD | DMWRITE);
p = ixp_enc_stat(p, &stat);
r->fcall.count += mkstat(&stat, &dir, "data", strlen(item[i]->data), DMREAD | DMWRITE);
r->fcall->count += mkstat(&stat, &dir, "data", strlen(item[i]->data), DMREAD | DMWRITE);
p = ixp_enc_stat(p, &stat);
}
break;
@ -449,39 +428,41 @@ xread(Req *r)
switch(align) {
case SOUTH:
memcpy(p, "south", 5);
r->fcall.count = 5;
r->fcall->count = 5;
break;
case NORTH:
memcpy(p, "north", 5);
r->fcall.count = 5;
r->fcall->count = 5;
break;
default:
memcpy(p, "none", 4);
r->fcall.count = 4;
r->fcall->count = 4;
break;
}
break;
case Ffont:
if((r->fcall.count = strlen(font)))
memcpy(p, font, r->fcall.count);
if((r->fcall->count = strlen(font)))
memcpy(p, font, r->fcall->count);
break;
case Fevent:
/* has to be processed asynchroneous, will be enqueued */
return 1;
break;
case Fdata:
if(i == nitem)
new_item();
if(i >= nitem)
goto error_xread;
if((r->fcall.count = strlen(item[i]->data)))
memcpy(p, item[i]->data, r->fcall.count);
if((r->fcall->count = strlen(item[i]->data)))
memcpy(p, item[i]->data, r->fcall->count);
break;
case Fcolor:
if(i == nitem)
new_item();
if(i >= nitem)
goto error_xread;
if((r->fcall.count = strlen(item[i]->color)))
memcpy(p, item[i]->color, r->fcall.count);
if((r->fcall->count = strlen(item[i]->color)))
memcpy(p, item[i]->color, r->fcall->count);
break;
default:
error_xread:
@ -490,18 +471,18 @@ error_xread:
break;
}
}
r->fcall.id = RREAD;
r->fcall->id = RREAD;
return 0;
}
static int
xstat(Req *r)
xstat(IXPReq *r)
{
Map *map = fid_to_map(r->maps, r->fcall.fid);
IXPMap *m = ixp_server_fid2map(r, r->fcall->fid);
unsigned short i;
Qid dir;
if(!map) {
if(!m) {
errstr = "invalid fid";
return -1;
}
@ -509,57 +490,57 @@ xstat(Req *r)
dir.type = IXP_QTDIR;
dir.path = mkqpath(Ditem, i);
switch (qpath_type(map->qid.path)) {
switch (qpath_type(m->qid.path)) {
case Droot:
case Ditem:
mkstat(&r->fcall.stat, &root_qid, qid_to_name(&map->qid), 0, DMDIR | DMREAD | DMEXEC);
mkstat(&r->fcall->stat, &root_qid, qid_to_name(&m->qid), 0, DMDIR | DMREAD | DMEXEC);
break;
case Fdisplay:
if(align == SOUTH || align == NORTH)
mkstat(&r->fcall.stat, &root_qid, qid_to_name(&map->qid), 6, DMREAD | DMWRITE);
mkstat(&r->fcall->stat, &root_qid, qid_to_name(&m->qid), 6, DMREAD | DMWRITE);
else
mkstat(&r->fcall.stat, &root_qid, qid_to_name(&map->qid), 5, DMREAD | DMWRITE);
mkstat(&r->fcall->stat, &root_qid, qid_to_name(&m->qid), 5, DMREAD | DMWRITE);
break;
case Fevent:
mkstat(&r->fcall.stat, &root_qid, qid_to_name(&map->qid), 0, DMREAD);
mkstat(&r->fcall->stat, &root_qid, qid_to_name(&m->qid), 0, DMREAD);
break;
case Ffont:
mkstat(&r->fcall.stat, &root_qid, qid_to_name(&map->qid), strlen(font), DMREAD | DMWRITE);
mkstat(&r->fcall->stat, &root_qid, qid_to_name(&m->qid), strlen(font), DMREAD | DMWRITE);
break;
case Fdata:
mkstat(&r->fcall.stat, &dir, qid_to_name(&map->qid), strlen(item[i]->data), DMREAD | DMWRITE);
mkstat(&r->fcall->stat, &dir, qid_to_name(&m->qid), strlen(item[i]->data), DMREAD | DMWRITE);
break;
case Fcolor:
mkstat(&r->fcall.stat, &dir, qid_to_name(&map->qid), 24, DMREAD | DMWRITE);
mkstat(&r->fcall->stat, &dir, qid_to_name(&m->qid), 24, DMREAD | DMWRITE);
break;
default:
errstr = "invalid stat request";
return -1;
break;
}
r->fcall.id = RSTAT;
r->fcall->id = RSTAT;
return 0;
}
static int
xwrite(Req *r)
xwrite(IXPReq *r)
{
char buf[256];
Map *map = fid_to_map(r->maps, r->fcall.fid);
IXPMap *m = ixp_server_fid2map(r, r->fcall->fid);
unsigned short i;
if(!map) {
if(!m) {
errstr = "invalid fid";
return -1;
}
i = qpath_item(map->qid.path);
switch (qpath_type(map->qid.path)) {
i = qpath_item(m->qid.path);
switch (qpath_type(m->qid.path)) {
case Fdisplay:
if(r->fcall.count > 5)
if(r->fcall->count > 5)
goto error_xwrite;
memcpy(buf, r->fcall.data, r->fcall.count);
buf[r->fcall.count] = 0;
memcpy(buf, r->fcall->data, r->fcall->count);
buf[r->fcall->count] = 0;
if(!blitz_strtoalign(&align, buf))
goto error_xwrite;
/* TODO: resize/hide */
@ -567,20 +548,20 @@ xwrite(Req *r)
case Ffont:
if(font)
free(font);
font = cext_emallocz(r->fcall.count + 1);
memcpy(font, r->fcall.data, r->fcall.count);
font = cext_emallocz(r->fcall->count + 1);
memcpy(font, r->fcall->data, r->fcall->count);
/* TODO: XQueryFont */
break;
case Fdata:
{
unsigned int len = r->fcall.count;
unsigned int len = r->fcall->count;
if(i == nitem)
new_item();
if(!i || (i >= nitem))
goto error_xwrite;
if(len >= sizeof(item[i]->data))
len = sizeof(item[i]->data) - 1;
memcpy(item[i]->data, r->fcall.data, len);
memcpy(item[i]->data, r->fcall->data, len);
item[i]->data[len] = 0;
/* TODO: redraw */
}
@ -588,10 +569,10 @@ xwrite(Req *r)
case Fcolor:
if(i == nitem)
new_item();
if((i >= nitem) || (r->fcall.count >= 24))
if((i >= nitem) || (r->fcall->count >= 24))
goto error_xwrite;
memcpy(item[i]->color, r->fcall.data, r->fcall.count);
item[i]->color[r->fcall.count] = 0;
memcpy(item[i]->color, r->fcall->data, r->fcall->count);
item[i]->color[r->fcall->count] = 0;
/* TODO: update color */
break;
default:
@ -600,35 +581,29 @@ error_xwrite:
return -1;
break;
}
r->fcall.id = RWRITE;
r->fcall->id = RWRITE;
return 0;
}
static int
xclunk(Req *r)
xclunk(IXPReq *r)
{
Map *maps = r->maps;
Map *m, *map = fid_to_map(r->maps, r->fcall.fid);
IXPMap *m = ixp_server_fid2map(r, r->fcall->fid);
if(!map) {
if(!m) {
errstr = "invalid fid";
return -1;
}
if(maps == map)
r->maps = maps = maps->next;
else {
for(m = maps; m && m->next != map; m = m->next);
m->next = map->next;
}
free(map);
r->fcall.id = RCLUNK;
ixp_server_detach_map(m, r->map);
free(m);
r->fcall->id = RCLUNK;
return 0;
}
static int
do9p(Req *r)
doixp(IXPReq *r)
{
switch(r->fcall.id) {
switch(r->fcall->id) {
case TVERSION: return xversion(r); break;
case TATTACH: return xattach(r); break;
case TWALK: return xwalk(r); break;
@ -645,57 +620,44 @@ do9p(Req *r)
}
static void
handle_9p_req(IXPServer *s, IXPConn *c)
handle_ixp_req(IXPServer *s, IXPConn *c)
{
Req *r = c->aux;
IXPReq *r = c->aux;
unsigned int msize;
int ret;
int ret = -1;
errstr = 0;
if(!(msize = ixp_recv_message(c->fd, msg, IXP_MAX_MSG, &errstr))) {
ixp_server_free_conn(s, c);
return;
}
/*fprintf(stderr, "msize=%d\n", msize);*/
if((msize = ixp_msg_to_fcall(msg, IXP_MAX_MSG, &r->fcall)))
ret = do9p(r);
if(ret == -1) {
/*fprintf(stderr, "function id=%d\n", s->fcall.id);*/
if(!r->fcall)
r->fcall = cext_emallocz(sizeof(Fcall));
if((msize = ixp_msg_to_fcall(msg, IXP_MAX_MSG, r->fcall)))
ret = doixp(r);
if(ret == -1) {
if(!errstr)
errstr = "function not supported";
r->fcall.id = RERROR;
cext_strlcpy(r->fcall.errstr, errstr, sizeof(r->fcall.errstr));
r->fcall->id = RERROR;
cext_strlcpy(r->fcall->errstr, errstr, sizeof(r->fcall->errstr));
}
msize = ixp_fcall_to_msg(&r->fcall, msg, IXP_MAX_MSG);
else if(ret == 1) {
r->async = ixp_server_attach_fcall(r->fcall, r->async, &r->asyncsz);
r->fcall = nil;
return; /* response asynchroneously */
}
msize = ixp_fcall_to_msg(r->fcall, msg, IXP_MAX_MSG);
if(ixp_send_message(c->fd, msg, msize, &errstr) != msize)
ixp_server_free_conn(s, c);
}
static void
close_9p_conn(IXPServer *s, IXPConn *c)
{
Req *r = c->aux;
if(r) {
Map *m, *maps = r->maps;
while((m = maps)) {
r->maps = maps = maps->next;
free(m);
}
free(r);
}
c->aux = nil;
shutdown(c->fd, SHUT_RDWR);
close(c->fd);
}
static void
new_9p_conn(IXPServer *s, IXPConn *c)
new_ixp_conn(IXPServer *s, IXPConn *c)
{
IXPConn *new = ixp_server_alloc_conn(s);
if(new && ((new->fd = ixp_accept_sock(c->fd)) >= 0)) {
new->read = handle_9p_req;
new->close = close_9p_conn;
new->aux = cext_emallocz(sizeof(Req));
new->read = handle_ixp_req;
new->close = ixp_server_close_conn;
new->aux = cext_emallocz(sizeof(IXPReq));
}
}
@ -742,8 +704,8 @@ main(int argc, char *argv[])
fprintf(stderr, "wmiibar: fatal: %s\n", errstr);
exit(1);
}
c->read = new_9p_conn;
c->close = close_9p_conn;
c->read = new_ixp_conn;
c->close = ixp_server_close_conn;
/* TODO: add X conn */
root_qid.type = IXP_QTDIR;

View File

@ -209,6 +209,21 @@ struct IXPServer {
fd_set rd;
};
typedef struct IXPMap IXPMap;
struct IXPMap {
unsigned int fid;
Qid qid;
};
typedef struct {
IXPMap **map;
size_t mapsz;
Fcall *fcall;
Fcall **async;
size_t asyncsz;
} IXPReq;
typedef struct {
int fd;
unsigned int root_fid;
@ -272,6 +287,12 @@ void ixp_server_free_conn(IXPServer *s, IXPConn *c);
char *ixp_server_loop(IXPServer *s);
void ixp_server_init(IXPServer *s);
void ixp_server_deinit(IXPServer *s);
Fcall ** ixp_server_attach_fcall(Fcall *f, Fcall **array, size_t *size);
void ixp_server_detach_fcall(Fcall *f, Fcall **array);
IXPMap ** ixp_server_attach_map(IXPMap *m, IXPMap **array, size_t *size);
void ixp_server_detach_map(IXPMap *m, IXPMap **array);
IXPMap * ixp_server_fid2map(IXPReq *r, unsigned int fid);
void ixp_server_close_conn(IXPServer *s, IXPConn *c);
/* socket.c */
int ixp_connect_sock(char *address);

View File

@ -104,3 +104,101 @@ ixp_server_deinit(IXPServer *s)
if(s->conn[i].fd >= 0)
ixp_server_free_conn(s, &s->conn[i]);
}
Fcall **
ixp_server_attach_fcall(Fcall *f, Fcall **array, size_t *size)
{
size_t i;
if(!array) {
*size = 2;
array = cext_emallocz(sizeof(Fcall *) * (*size));
}
for(i = 0; (i < (*size)) && array[i]; i++);
if(i >= (*size)) {
Fcall **tmp = array;
(*size) *= 2;
array = cext_emallocz(sizeof(Fcall *) * (*size));
for(i = 0; tmp[i]; i++)
array[i] = tmp[i];
free(tmp);
}
array[i] = f;
return array;
}
void
ixp_server_detach_fcall(Fcall *f, Fcall **array)
{
size_t i;
for(i = 0; array[i] != f; i++);
for(; array[i + 1]; i++)
array[i] = array[i + 1];
array[i] = nil;
}
IXPMap **
ixp_server_attach_map(IXPMap *m, IXPMap **array, size_t *size)
{
size_t i;
if(!array) {
*size = 2;
array = cext_emallocz(sizeof(IXPMap *) * (*size));
}
for(i = 0; (i < (*size)) && array[i]; i++);
if(i >= (*size)) {
IXPMap **tmp = array;
(*size) *= 2;
array = cext_emallocz(sizeof(IXPMap *) * (*size));
for(i = 0; tmp[i]; i++)
array[i] = tmp[i];
free(tmp);
}
array[i] = m;
return array;
}
void
ixp_server_detach_map(IXPMap *m, IXPMap **array)
{
size_t i;
for(i = 0; array[i] != m; i++);
for(; array[i + 1]; i++)
array[i] = array[i + 1];
array[i] = nil;
}
IXPMap *
ixp_server_fid2map(IXPReq *r, unsigned int fid)
{
size_t i;
for(i = 0; (i < r->mapsz) && r->map[i]; i++)
if(r->map[i]->fid == fid)
return r->map[i];
return nil;
}
void
ixp_server_close_conn(IXPServer *s, IXPConn *c)
{
IXPReq *r = c->aux;
if(r) {
size_t i;
if(r->map) {
for(i = 0; (i < r->mapsz) && r->map[i]; i++)
free(r->map[i]);
free(r->map);
}
if(r->async) {
for(i = 0; (i < r->asyncsz) && r->async[i]; i++)
free(r->async[i]);
free(r->async);
free(r);
}
}
c->aux = nil;
shutdown(c->fd, SHUT_RDWR);
close(c->fd);
}