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#ifdef __MINGW32__
#include <windows.h>
#include <mswsock.h>
#include <errno.h>
#include "io_internal.h"
#include "iob_internal.h"
int64 iob_send(int64 s,io_batch* b) {
/* Windows has a sendfile called TransmitFile, which can send one
* header and one trailer buffer. */
iob_entry* x,* last;
io_entry* e;
int64 sent;
int i;
if (b->bytesleft==0) return 0;
sent=-1;
e=array_get(&io_fds,sizeof(io_entry),s);
if (!e) { errno=EBADF; return -3; }
if (!(x=array_get(&b->b,sizeof(iob_entry),b->next)))
return -3; /* can't happen error */
last=(iob_entry*)(((char*)array_start(&b->b))+array_bytes(&b->b));
if (e->canwrite || e->sendfilequeued==1) {
/* An overlapping write finished. Reap the result. */
if (e->bytes_written==-1) return -3;
if (e->bytes_written<x->n) {
sent=e->bytes_written;
if (x->n < e->bytes_written) {
e->bytes_written-=x->n;
x->n=0;
++x;
}
x->n -= e->bytes_written;
x->offset += e->bytes_written;
b->bytesleft -= e->bytes_written;
}
e->canwrite=0; e->sendfilequeued=0;
}
for (i=0; x+i<last; ++i)
if (x[i].n) break;
if (x[i].type==FROMBUF || x[i].type==FROMBUF_FREE) {
if (x+i+1 < last &&
(x[i+1].type==FROMFILE || x[i+1].type==FROMFILE_CLOSE)) {
TRANSMIT_FILE_BUFFERS tfb;
e->sendfilequeued=1;
memset(&tfb,0,sizeof(tfb));
memset(&e[i].os,0,sizeof(e[i].os));
e[i].os.Offset=x[i].offset;
e[i].os.OffsetHigh=(x[i].offset>>32);
if (!TransmitFile(s,(HANDLE)x[i].fd,
x[i].n+tfb.HeadLength>0xffff?0xffff:x[i].n,
0,&e[i].os,&tfb,TF_USE_KERNEL_APC))
return -3;
return sent;
} else {
e->writequeued=1;
if (!WriteFile(s,x[i].buf+x[i].offset,x[i].n,0,&e->ow))
return -3;
return sent;
}
} else {
e->sendfilequeued=1;
memset(&e[i].os,0,sizeof(e[i].os));
e[i].os.Offset=x[i].offset;
e[i].os.OffsetHigh=(x[i].offset>>32);
if (!TransmitFile(s,(HANDLE)x[i].fd,
x[i].n>0xffff?0xffff:x[i].n,
0,&e[i].os,0,TF_USE_KERNEL_APC))
return -3;
return sent;
}
}
#else
#include "havebsdsf.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <errno.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <stdlib.h>
#include <unistd.h>
#include "havealloca.h"
#include "iob_internal.h"
int64 iob_send(int64 s,io_batch* b) {
iob_entry* e,* last;
struct iovec* v;
uint64 total;
int64 sent;
long i;
long headers;
#ifdef HAVE_BSDSENDFILE
long trailers;
#endif
if (b->bytesleft==0) return 0;
last=(iob_entry*)(((char*)array_start(&b->b))+array_bytes(&b->b));
v=alloca(b->bufs*sizeof(struct iovec));
total=0;
for (;;) {
if (!(e=array_get(&b->b,sizeof(iob_entry),b->next)))
return -3; /* can't happen error */
#ifdef HAVE_BSDSENDFILE
/* BSD sendfile can send headers and trailers. If we run on BSD, we
* should try to exploit this. */
headers=trailers=0;
#endif
for (i=0; e+i<last; ++i) {
if (e[i].type==FROMFILE || e[i].type==FROMFILE_CLOSE) break;
v[i].iov_base=(char*)(e[i].buf+e[i].offset);
v[i].iov_len=e[i].n;
}
headers=i;
#ifdef HAVE_BSDSENDFILE
if (e[i].type==FROMFILE || e[i].type==FROMFILE_CLOSE) {
off_t sbytes;
struct sf_hdtr hdr;
int r;
for (++i; e+i<last; ++i) {
if (e[i].type==FROMFILE || e[i].type==FROMFILE_CLOSE) break;
v[i-1].iov_base=(char*)(e[i].buf+e[i].offset);
v[i-1].iov_len=e[i].n;
++trailers;
}
hdr.headers=v; hdr.hdr_cnt=headers;
hdr.trailers=v+headers; hdr.trl_cnt=trailers;
r=sendfile(e[headers].fd,s,e[headers].offset,e[headers].n,&hdr,&sbytes,0);
if (r==0)
sent=b->bytesleft;
else if (r==-1 && errno==EAGAIN) {
if (!(sent=sbytes)) {
sent=-1;
goto eagain;
}
} else
sent=-3;
} else {
if (headers==1) /* cosmetics for strace */
sent=write(s,v[0].iov_base,v[0].iov_len);
else
sent=writev(s,v,headers);
if (sent==-1) {
if (errno!=EAGAIN)
sent=-3;
else {
eagain:
io_eagain(s);
return -1;
}
}
}
#else
#ifdef TCP_CORK
if (b->bufs && b->files && !b->next) {
static int one=1;
setsockopt(s,IPPROTO_TCP,TCP_CORK,&one,sizeof(one));
}
#endif
if (headers) {
if (headers==1) /* cosmetics for strace */
sent=write(s,v[0].iov_base,v[0].iov_len);
else
sent=writev(s,v,headers);
if (sent==-1) {
if (errno==EAGAIN) {
io_eagain(s);
return -1;
}
sent=-3;
}
} else
sent=io_sendfile(s,e->fd,e->offset,e->n);
#endif
if (sent>0)
total+=sent;
else
return total?total:(uint64)sent;
if ((uint64)sent==b->bytesleft) {
#ifdef TCP_CORK
if (b->bufs && b->files) {
static int zero=0;
setsockopt(s,IPPROTO_TCP,TCP_CORK,&zero,sizeof(zero));
}
#endif
iob_reset(b);
break;
} else if (sent>0) {
uint64 rest=sent;
b->bytesleft-=rest;
for (i=0; e+i<last; ++i) {
if (e[i].n<=rest) {
rest-=e[i].n;
++b->next;
if (!rest) break;
} else {
e[i].offset+=rest;
e[i].n-=rest;
goto abort;
}
}
} else break;
}
abort:
return total;
}
#endif