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use poll() where available

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This commit is contained in:
rofl0r 2020-09-15 20:01:01 +01:00
parent 10cdee3bc5
commit bd92446184
3 changed files with 20 additions and 7 deletions
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2
configure.ac
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@ -141,7 +141,7 @@ AC_HEADER_STDC
AC_HEADER_TIME
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([sys/ioctl.h alloca.h memory.h malloc.h sysexits.h \
values.h])
values.h poll.h])
dnl Checks for libary functions
AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK

14
src/mypoll.c
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@ -1,8 +1,14 @@
#include "mypoll.h"
#define MYPOLL_READ (1<<1)
#define MYPOLL_WRITE (1<<2)
#ifdef HAVE_POLL_H
int mypoll(pollfd_struct* fds, int nfds, int timeout) {
int i, ret;
for(i=0; i<nfds; ++i) if(!fds[i].events) fds[i].fd=~fds[i].fd;
ret = poll(fds, nfds, timeout <= 0 ? timeout : timeout*1000);
for(i=0; i<nfds; ++i) if(!fds[i].events) fds[i].fd=~fds[i].fd;
return ret;
}
#else
int mypoll(pollfd_struct* fds, int nfds, int timeout) {
fd_set rset, wset, *r=0, *w=0;
int i, ret, maxfd=-1;
@ -39,4 +45,4 @@ int mypoll(pollfd_struct* fds, int nfds, int timeout) {
}
return ret;
}
#endif

11
src/mypoll.h
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@ -1,21 +1,28 @@
#ifndef MYPOLL_H
#define MYPOLL_H
#include <sys/select.h>
#include "config.h"
#ifdef HAVE_POLL_H
#include <poll.h>
typedef struct pollfd pollfd_struct;
#define MYPOLL_READ POLLIN
#define MYPOLL_WRITE POLLOUT
#else
#include <sys/select.h>
typedef struct mypollfd {
int fd;
short events;
short revents;
} pollfd_struct;
#endif
#define MYPOLL_READ (1<<1)
#define MYPOLL_WRITE (1<<2)
#endif
int mypoll(pollfd_struct* fds, int nfds, int timeout);