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8075738: Better multi-JVM sharing

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Reviewed-by: michaelm
This commit is contained in:
Rob McKenna 2015-04-21 20:33:34 +01:00
parent 6b3eb7ab72
commit 7ee95a458c
1 changed files with 24 additions and 27 deletions
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51
jdk/src/java.base/unix/native/libnet/net_util_md.c
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@ -1524,6 +1524,7 @@ NET_Bind(int fd, struct sockaddr *him, int len)
int exclbind = -1;
#endif
int rv;
int arg, alen;
#ifdef __linux__
/*
@ -1540,7 +1541,7 @@ NET_Bind(int fd, struct sockaddr *him, int len)
}
#endif
#if defined(__solaris__) && defined(AF_INET6)
#if defined(__solaris__)
/*
* Solaris has separate IPv4 and IPv6 port spaces so we
* use an exclusive bind when SO_REUSEADDR is not used to
@ -1550,35 +1551,31 @@ NET_Bind(int fd, struct sockaddr *him, int len)
* results in a late bind that fails because the
* corresponding IPv4 port is in use.
*/
if (ipv6_available()) {
int arg;
socklen_t len;
alen = sizeof(arg);
len = sizeof(arg);
if (useExclBind || getsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
(char *)&arg, &len) == 0) {
if (useExclBind || arg == 0) {
/*
* SO_REUSEADDR is disabled or sun.net.useExclusiveBind
* property is true so enable TCP_EXCLBIND or
* UDP_EXCLBIND
*/
len = sizeof(arg);
if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&arg,
&len) == 0) {
if (arg == SOCK_STREAM) {
level = IPPROTO_TCP;
exclbind = TCP_EXCLBIND;
} else {
level = IPPROTO_UDP;
exclbind = UDP_EXCLBIND;
}
if (useExclBind || getsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
(char *)&arg, &alen) == 0) {
if (useExclBind || arg == 0) {
/*
* SO_REUSEADDR is disabled or sun.net.useExclusiveBind
* property is true so enable TCP_EXCLBIND or
* UDP_EXCLBIND
*/
alen = sizeof(arg);
if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&arg,
&alen) == 0) {
if (arg == SOCK_STREAM) {
level = IPPROTO_TCP;
exclbind = TCP_EXCLBIND;
} else {
level = IPPROTO_UDP;
exclbind = UDP_EXCLBIND;
}
arg = 1;
setsockopt(fd, level, exclbind, (char *)&arg,
sizeof(arg));
}
arg = 1;
setsockopt(fd, level, exclbind, (char *)&arg,
sizeof(arg));
}
}