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anet.c: API to set sockets back to blocking mode.

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This commit is contained in:
antirez 2014-10-17 16:30:11 +02:00
parent 10aafdad56
commit 74f90c6123
2 changed files with 18 additions and 4 deletions
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21
src/anet.c
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@ -57,24 +57,37 @@ static void anetSetError(char *err, const char *fmt, ...)
va_end(ap);
}
int anetNonBlock(char *err, int fd)
{
int anetSetBlock(char *err, int fd, int non_block) {
int flags;
/* Set the socket non-blocking.
/* Set the socket blocking (if non_block is zero) or non-blocking.
* Note that fcntl(2) for F_GETFL and F_SETFL can't be
* interrupted by a signal. */
if ((flags = fcntl(fd, F_GETFL)) == -1) {
anetSetError(err, "fcntl(F_GETFL): %s", strerror(errno));
return ANET_ERR;
}
if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) {
if (non_block)
flags |= O_NONBLOCK;
else
flags &= ~O_NONBLOCK;
if (fcntl(fd, F_SETFL, flags) == -1) {
anetSetError(err, "fcntl(F_SETFL,O_NONBLOCK): %s", strerror(errno));
return ANET_ERR;
}
return ANET_OK;
}
int anetNonBlock(char *err, int fd) {
return anetSetBlock(err,fd,1);
}
int anetBlock(char *err, int fd) {
return anetSetBlock(err,fd,0);
}
/* Set TCP keep alive option to detect dead peers. The interval option
* is only used for Linux as we are using Linux-specific APIs to set
* the probe send time, interval, and count. */

1
src/anet.h
View File

@ -62,6 +62,7 @@ int anetTcpAccept(char *err, int serversock, char *ip, size_t ip_len, int *port)
int anetUnixAccept(char *err, int serversock);
int anetWrite(int fd, char *buf, int count);
int anetNonBlock(char *err, int fd);
int anetBlock(char *err, int fd);
int anetEnableTcpNoDelay(char *err, int fd);
int anetDisableTcpNoDelay(char *err, int fd);
int anetTcpKeepAlive(char *err, int fd);