Add wrapper for kevent() syscall

Noted as missing by: nicolas.leonard@animaths.com

lib/libc_r/Makefile

@@ -29,7 +29,8 @@ PRECIOUSLIB=	yes
 HIDDEN_SYSCALLS= aio_suspend.o accept.o bind.o close.o connect.o dup.o dup2.o \
 	execve.o fchflags.o fchmod.o fchown.o fcntl.o \
 	flock.o fpathconf.o fstat.o fstatfs.o fsync.o getdirentries.o \
-	getlogin.o getpeername.o getsockname.o getsockopt.o ioctl.o listen.o \
+	getlogin.o getpeername.o getsockname.o getsockopt.o ioctl.o \
+	kevent.o listen.o \
 	msync.o nanosleep.o nfssvc.o open.o poll.o read.o readv.o recvfrom.o \
 	recvmsg.o sched_yield.o select.o sendfile.o sendmsg.o sendto.o \
 	setsockopt.o shutdown.o sigaction.o sigaltstack.o \

lib/libc_r/uthread/Makefile.inc

@@ -65,6 +65,7 @@ SRCS+= \
 	uthread_jmp.c \
 	uthread_join.c \
 	uthread_kern.c \
+	uthread_kevent.c \
 	uthread_kill.c \
 	uthread_listen.c \
 	uthread_mattr_init.c \

lib/libc_r/uthread/pthread_private.h

@@ -1063,7 +1063,7 @@ void    _thread_kern_sched(ucontext_t *);
 void    _thread_kern_sched_state(enum pthread_state,char *fname,int lineno);
 void	_thread_kern_sched_state_unlock(enum pthread_state state,
 	    spinlock_t *lock, char *fname, int lineno);
-void    _thread_kern_set_timeout(struct timespec *);
+void    _thread_kern_set_timeout(const struct timespec *);
 void    _thread_kern_sig_defer(void);
 void    _thread_kern_sig_undefer(void);
 void    _thread_sig_handler(int, int, ucontext_t *);

lib/libc_r/uthread/uthread_kern.c

@@ -1008,7 +1008,7 @@ _thread_kern_poll(int wait_reqd)
 }
 
 void
-_thread_kern_set_timeout(struct timespec * timeout)
+_thread_kern_set_timeout(const struct timespec * timeout)
 {
 	struct timespec current_time;
 	struct timeval  tv;

lib/libc_r/uthread/uthread_kevent.c

@@ -0,0 +1,80 @@
+/*-
+ * Copyright (c) 2000 Jonathan Lemon <jlemon@flugsvamp.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/fcntl.h>
+#include <sys/event.h>
+#ifdef _THREAD_SAFE
+#include <pthread.h>
+#include "pthread_private.h"
+
+
+int 
+_kevent(int kq, const struct kevent *changelist, int nchanges,
+	struct kevent *eventlist, int nevents, const struct timespec *timeout)
+{
+	struct timespec nullts = { 0, 0 };
+	int rc;
+
+	/* Set the wake up time */
+	_thread_kern_set_timeout(timeout);
+
+	rc = _thread_sys_kevent(kq, changelist, nchanges,
+	    eventlist, nevents, &nullts);
+	if (rc == 0 && (timeout == NULL ||
+	    timeout->tv_sec != 0 || timeout->tv_nsec != 0)) {
+		/* Save the socket file descriptor: */
+		_thread_run->data.fd.fd = kq;
+		_thread_run->data.fd.fname = __FILE__;
+		_thread_run->data.fd.branch = __LINE__;
+
+		do {
+			/* Reset the interrupted operation flag: */
+			_thread_run->interrupted = 0;
+
+			_thread_kern_sched_state(PS_FDR_WAIT,
+			    __FILE__, __LINE__);
+
+			if (_thread_run->interrupted) {
+				errno = EINTR;
+				rc = -1;
+				break;
+			}
+			rc = _thread_sys_kevent(kq, NULL, 0,
+			    eventlist, nevents, &nullts);
+		} while (rc == 0 && timeout != NULL);
+	}
+	return (rc);
+}
+
+__strong_reference(_kevent, kevent);
+#endif

lib/libkse/Makefile

@@ -29,7 +29,8 @@ PRECIOUSLIB=	yes
 HIDDEN_SYSCALLS= aio_suspend.o accept.o bind.o close.o connect.o dup.o dup2.o \
 	execve.o fchflags.o fchmod.o fchown.o fcntl.o \
 	flock.o fpathconf.o fstat.o fstatfs.o fsync.o getdirentries.o \
-	getlogin.o getpeername.o getsockname.o getsockopt.o ioctl.o listen.o \
+	getlogin.o getpeername.o getsockname.o getsockopt.o ioctl.o \
+	kevent.o listen.o \
 	msync.o nanosleep.o nfssvc.o open.o poll.o read.o readv.o recvfrom.o \
 	recvmsg.o sched_yield.o select.o sendfile.o sendmsg.o sendto.o \
 	setsockopt.o shutdown.o sigaction.o sigaltstack.o \

lib/libkse/thread/Makefile.inc

@@ -65,6 +65,7 @@ SRCS+= \
 	uthread_jmp.c \
 	uthread_join.c \
 	uthread_kern.c \
+	uthread_kevent.c \
 	uthread_kill.c \
 	uthread_listen.c \
 	uthread_mattr_init.c \

lib/libkse/thread/thr_kern.c

@@ -1008,7 +1008,7 @@ _thread_kern_poll(int wait_reqd)
 }
 
 void
-_thread_kern_set_timeout(struct timespec * timeout)
+_thread_kern_set_timeout(const struct timespec * timeout)
 {
 	struct timespec current_time;
 	struct timeval  tv;

lib/libkse/thread/thr_private.h

@@ -1063,7 +1063,7 @@ void    _thread_kern_sched(ucontext_t *);
 void    _thread_kern_sched_state(enum pthread_state,char *fname,int lineno);
 void	_thread_kern_sched_state_unlock(enum pthread_state state,
 	    spinlock_t *lock, char *fname, int lineno);
-void    _thread_kern_set_timeout(struct timespec *);
+void    _thread_kern_set_timeout(const struct timespec *);
 void    _thread_kern_sig_defer(void);
 void    _thread_kern_sig_undefer(void);
 void    _thread_sig_handler(int, int, ucontext_t *);

lib/libpthread/Makefile

@@ -29,7 +29,8 @@ PRECIOUSLIB=	yes
 HIDDEN_SYSCALLS= aio_suspend.o accept.o bind.o close.o connect.o dup.o dup2.o \
 	execve.o fchflags.o fchmod.o fchown.o fcntl.o \
 	flock.o fpathconf.o fstat.o fstatfs.o fsync.o getdirentries.o \
-	getlogin.o getpeername.o getsockname.o getsockopt.o ioctl.o listen.o \
+	getlogin.o getpeername.o getsockname.o getsockopt.o ioctl.o \
+	kevent.o listen.o \
 	msync.o nanosleep.o nfssvc.o open.o poll.o read.o readv.o recvfrom.o \
 	recvmsg.o sched_yield.o select.o sendfile.o sendmsg.o sendto.o \
 	setsockopt.o shutdown.o sigaction.o sigaltstack.o \

lib/libpthread/thread/Makefile.inc

@@ -65,6 +65,7 @@ SRCS+= \
 	uthread_jmp.c \
 	uthread_join.c \
 	uthread_kern.c \
+	uthread_kevent.c \
 	uthread_kill.c \
 	uthread_listen.c \
 	uthread_mattr_init.c \

lib/libpthread/thread/thr_kern.c

@@ -1008,7 +1008,7 @@ _thread_kern_poll(int wait_reqd)
 }
 
 void
-_thread_kern_set_timeout(struct timespec * timeout)
+_thread_kern_set_timeout(const struct timespec * timeout)
 {
 	struct timespec current_time;
 	struct timeval  tv;

lib/libpthread/thread/thr_private.h

@@ -1063,7 +1063,7 @@ void    _thread_kern_sched(ucontext_t *);
 void    _thread_kern_sched_state(enum pthread_state,char *fname,int lineno);
 void	_thread_kern_sched_state_unlock(enum pthread_state state,
 	    spinlock_t *lock, char *fname, int lineno);
-void    _thread_kern_set_timeout(struct timespec *);
+void    _thread_kern_set_timeout(const struct timespec *);
 void    _thread_kern_sig_defer(void);
 void    _thread_kern_sig_undefer(void);
 void    _thread_sig_handler(int, int, ucontext_t *);