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make sure the mmap based io_sendfile actually works (and terminates)

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This commit is contained in:
leitner 2003-11-24 04:12:07 +00:00
parent 3fe23979fd
commit 3cac9c2b80
2 changed files with 9 additions and 3 deletions
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5
io/io_sendfile.c
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@ -60,13 +60,12 @@ int64 io_sendfile(int64 out,int64 in,uint64 off,uint64 bytes) {
if (off>=e->mapofs && off<e->mapofs+e->maplen)
goto mapok; /* ok; mmapped the right chunk*/
munmap(e->mmapped,e->maplen);
e->mmapped=0;
}
e->mapofs=off&0xffffffffffff0000ull;
if (e->mapofs+0xffff>off+bytes)
if (e->mapofs+0x10000>off+bytes)
e->maplen=off+bytes-e->mapofs;
else
e->maplen=0xffff;
e->maplen=0x10000;
if ((e->mmapped=mmap(0,e->maplen,PROT_READ,MAP_SHARED,in,e->mapofs))==MAP_FAILED) {
e->mmapped=0;
goto readwrite;

7
t.c
View File

@ -23,12 +23,19 @@
__asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx")
int main(int argc,char* argv[]) {
char buf[100];
int i;
printf("%d\n",i=fmt_pad(buf,"fnord",5,7,10));
buf[i]=0;
puts(buf);
#if 0
char ip[16];
char buf[32];
printf("%d (expect 2)\n",scan_ip6("::",ip));
printf("%d (expect 3)\n",scan_ip6("::1",ip));
printf("%d (expect 16)\n",scan_ip6("fec0:0:0:ffff::1/0",ip));
printf("%.*s\n",fmt_ip6(buf,ip),buf);
#endif
#if 0
static stralloc s,t;
stralloc_copys(&s,"fnord");