Adding upstream version 1.46.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 567 deletions

diff --git a/fluent-bit/lib/monkey/mk_core/deps/libevent/kqueue.c b/fluent-bit/lib/monkey/mk_core/deps/libevent/kqueue.c
deleted file mode 100644
index a959c58af..000000000
--- a/fluent-bit/lib/monkey/mk_core/deps/libevent/kqueue.c
+++ /dev/null
@@ -1,567 +0,0 @@
-/*	$OpenBSD: kqueue.c,v 1.5 2002/07/10 14:41:31 art Exp $	*/
-
-/*
- * Copyright 2000-2007 Niels Provos <provos@citi.umich.edu>
- * Copyright 2007-2012 Niels Provos and Nick Mathewson
- *
- * 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.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
- */
-#include "event2/event-config.h"
-#include "evconfig-private.h"
-
-#ifdef EVENT__HAVE_KQUEUE
-
-#include <sys/types.h>
-#ifdef EVENT__HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-#include <sys/queue.h>
-#include <sys/event.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#ifdef EVENT__HAVE_INTTYPES_H
-#include <inttypes.h>
-#endif
-
-/* Some platforms apparently define the udata field of struct kevent as
- * intptr_t, whereas others define it as void*.  There doesn't seem to be an
- * easy way to tell them apart via autoconf, so we need to use OS macros. */
-#if defined(EVENT__HAVE_INTTYPES_H) && !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__darwin__) && !defined(__APPLE__) && !defined(__CloudABI__)
-#define PTR_TO_UDATA(x)	((intptr_t)(x))
-#define INT_TO_UDATA(x) ((intptr_t)(x))
-#else
-#define PTR_TO_UDATA(x)	(x)
-#define INT_TO_UDATA(x) ((void*)(x))
-#endif
-
-#include "event-internal.h"
-#include "log-internal.h"
-#include "evmap-internal.h"
-#include "event2/thread.h"
-#include "evthread-internal.h"
-#include "changelist-internal.h"
-
-#include "kqueue-internal.h"
-
-#define NEVENT		64
-
-struct kqop {
-	struct kevent *changes;
-	int changes_size;
-
-	struct kevent *events;
-	int events_size;
-	int kq;
-	int notify_event_added;
-	pid_t pid;
-};
-
-static void kqop_free(struct kqop *kqop);
-
-static void *kq_init(struct event_base *);
-static int kq_sig_add(struct event_base *, int, short, short, void *);
-static int kq_sig_del(struct event_base *, int, short, short, void *);
-static int kq_dispatch(struct event_base *, struct timeval *);
-static void kq_dealloc(struct event_base *);
-
-const struct eventop kqops = {
-	"kqueue",
-	kq_init,
-	event_changelist_add_,
-	event_changelist_del_,
-	kq_dispatch,
-	kq_dealloc,
-	1 /* need reinit */,
-    EV_FEATURE_ET|EV_FEATURE_O1|EV_FEATURE_FDS,
-	EVENT_CHANGELIST_FDINFO_SIZE
-};
-
-static const struct eventop kqsigops = {
-	"kqueue_signal",
-	NULL,
-	kq_sig_add,
-	kq_sig_del,
-	NULL,
-	NULL,
-	1 /* need reinit */,
-	0,
-	0
-};
-
-static void *
-kq_init(struct event_base *base)
-{
-	int kq = -1;
-	struct kqop *kqueueop = NULL;
-
-	if (!(kqueueop = mm_calloc(1, sizeof(struct kqop))))
-		return (NULL);
-
-/* Initialize the kernel queue */
-
-	if ((kq = kqueue()) == -1) {
-		event_warn("kqueue");
-		goto err;
-	}
-
-	kqueueop->kq = kq;
-
-	kqueueop->pid = getpid();
-
-	/* Initialize fields */
-	kqueueop->changes = mm_calloc(NEVENT, sizeof(struct kevent));
-	if (kqueueop->changes == NULL)
-		goto err;
-	kqueueop->events = mm_calloc(NEVENT, sizeof(struct kevent));
-	if (kqueueop->events == NULL)
-		goto err;
-	kqueueop->events_size = kqueueop->changes_size = NEVENT;
-
-	/* Check for Mac OS X kqueue bug. */
-	memset(&kqueueop->changes[0], 0, sizeof kqueueop->changes[0]);
-	kqueueop->changes[0].ident = -1;
-	kqueueop->changes[0].filter = EVFILT_READ;
-	kqueueop->changes[0].flags = EV_ADD;
-	/*
-	 * If kqueue works, then kevent will succeed, and it will
-	 * stick an error in events[0].  If kqueue is broken, then
-	 * kevent will fail.
-	 */
-	if (kevent(kq,
-		kqueueop->changes, 1, kqueueop->events, NEVENT, NULL) != 1 ||
-	    (int)kqueueop->events[0].ident != -1 ||
-	    !(kqueueop->events[0].flags & EV_ERROR)) {
-		event_warn("%s: detected broken kqueue; not using.", __func__);
-		goto err;
-	}
-
-	base->evsigsel = &kqsigops;
-
-	return (kqueueop);
-err:
-	if (kqueueop)
-		kqop_free(kqueueop);
-
-	return (NULL);
-}
-
-#define ADD_UDATA 0x30303
-
-static void
-kq_setup_kevent(struct kevent *out, evutil_socket_t fd, int filter, short change)
-{
-	memset(out, 0, sizeof(struct kevent));
-	out->ident = fd;
-	out->filter = filter;
-
-	if (change & EV_CHANGE_ADD) {
-		out->flags = EV_ADD;
-		/* We set a magic number here so that we can tell 'add'
-		 * errors from 'del' errors. */
-		out->udata = INT_TO_UDATA(ADD_UDATA);
-		if (change & EV_ET)
-			out->flags |= EV_CLEAR;
-#ifdef NOTE_EOF
-		/* Make it behave like select() and poll() */
-		if (filter == EVFILT_READ)
-			out->fflags = NOTE_EOF;
-#endif
-	} else {
-		EVUTIL_ASSERT(change & EV_CHANGE_DEL);
-		out->flags = EV_DELETE;
-	}
-}
-
-static int
-kq_build_changes_list(const struct event_changelist *changelist,
-    struct kqop *kqop)
-{
-	int i;
-	int n_changes = 0;
-
-	for (i = 0; i < changelist->n_changes; ++i) {
-		struct event_change *in_ch = &changelist->changes[i];
-		struct kevent *out_ch;
-		if (n_changes >= kqop->changes_size - 1) {
-			int newsize = kqop->changes_size * 2;
-			struct kevent *newchanges;
-
-			newchanges = mm_realloc(kqop->changes,
-			    newsize * sizeof(struct kevent));
-			if (newchanges == NULL) {
-				event_warn("%s: realloc", __func__);
-				return (-1);
-			}
-			kqop->changes = newchanges;
-			kqop->changes_size = newsize;
-		}
-		if (in_ch->read_change) {
-			out_ch = &kqop->changes[n_changes++];
-			kq_setup_kevent(out_ch, in_ch->fd, EVFILT_READ,
-			    in_ch->read_change);
-		}
-		if (in_ch->write_change) {
-			out_ch = &kqop->changes[n_changes++];
-			kq_setup_kevent(out_ch, in_ch->fd, EVFILT_WRITE,
-			    in_ch->write_change);
-		}
-	}
-	return n_changes;
-}
-
-static int
-kq_grow_events(struct kqop *kqop, size_t new_size)
-{
-	struct kevent *newresult;
-
-	newresult = mm_realloc(kqop->events,
-	    new_size * sizeof(struct kevent));
-
-	if (newresult) {
-		kqop->events = newresult;
-		kqop->events_size = new_size;
-		return 0;
-	} else {
-		return -1;
-	}
-}
-
-static int
-kq_dispatch(struct event_base *base, struct timeval *tv)
-{
-	struct kqop *kqop = base->evbase;
-	struct kevent *events = kqop->events;
-	struct kevent *changes;
-	struct timespec ts, *ts_p = NULL;
-	int i, n_changes, res;
-
-	if (tv != NULL) {
-		ts.tv_sec = tv->tv_sec;
-		ts.tv_nsec = tv->tv_usec * 1000;
-		ts_p = &ts;
-	}
-
-	/* Build "changes" from "base->changes" */
-	EVUTIL_ASSERT(kqop->changes);
-	n_changes = kq_build_changes_list(&base->changelist, kqop);
-	if (n_changes < 0)
-		return -1;
-
-	event_changelist_remove_all_(&base->changelist, base);
-
-	/* steal the changes array in case some broken code tries to call
-	 * dispatch twice at once. */
-	changes = kqop->changes;
-	kqop->changes = NULL;
-
-	/* Make sure that 'events' is at least as long as the list of changes:
-	 * otherwise errors in the changes can get reported as a -1 return
-	 * value from kevent() rather than as EV_ERROR events in the events
-	 * array.
-	 *
-	 * (We could instead handle -1 return values from kevent() by
-	 * retrying with a smaller changes array or a larger events array,
-	 * but this approach seems less risky for now.)
-	 */
-	if (kqop->events_size < n_changes) {
-		int new_size = kqop->events_size;
-		do {
-			new_size *= 2;
-		} while (new_size < n_changes);
-
-		kq_grow_events(kqop, new_size);
-		events = kqop->events;
-	}
-
-	EVBASE_RELEASE_LOCK(base, th_base_lock);
-
-	res = kevent(kqop->kq, changes, n_changes,
-	    events, kqop->events_size, ts_p);
-
-	EVBASE_ACQUIRE_LOCK(base, th_base_lock);
-
-	EVUTIL_ASSERT(kqop->changes == NULL);
-	kqop->changes = changes;
-
-	if (res == -1) {
-		if (errno != EINTR) {
-			event_warn("kevent");
-			return (-1);
-		}
-
-		return (0);
-	}
-
-	event_debug(("%s: kevent reports %d", __func__, res));
-
-	for (i = 0; i < res; i++) {
-		int which = 0;
-
-		if (events[i].flags & EV_ERROR) {
-			switch (events[i].data) {
-
-			/* Can occur on delete if we are not currently
-			 * watching any events on this fd.  That can
-			 * happen when the fd was closed and another
-			 * file was opened with that fd. */
-			case ENOENT:
-			/* Can occur for reasons not fully understood
-			 * on FreeBSD. */
-			case EINVAL:
-				continue;
-#if defined(__FreeBSD__)
-			/*
-			 * This currently occurs if an FD is closed
-			 * before the EV_DELETE makes it out via kevent().
-			 * The FreeBSD capabilities code sees the blank
-			 * capability set and rejects the request to
-			 * modify an event.
-			 *
-			 * To be strictly correct - when an FD is closed,
-			 * all the registered events are also removed.
-			 * Queuing EV_DELETE to a closed FD is wrong.
-			 * The event(s) should just be deleted from
-			 * the pending changelist.
-			 */
-			case ENOTCAPABLE:
-				continue;
-#endif
-
-			/* Can occur on a delete if the fd is closed. */
-			case EBADF:
-				/* XXXX On NetBSD, we can also get EBADF if we
-				 * try to add the write side of a pipe, but
-				 * the read side has already been closed.
-				 * Other BSDs call this situation 'EPIPE'. It
-				 * would be good if we had a way to report
-				 * this situation. */
-				continue;
-			/* These two can occur on an add if the fd was one side
-			 * of a pipe, and the other side was closed. */
-			case EPERM:
-			case EPIPE:
-				/* Report read events, if we're listening for
-				 * them, so that the user can learn about any
-				 * add errors.  (If the operation was a
-				 * delete, then udata should be cleared.) */
-				if (events[i].udata) {
-					/* The operation was an add:
-					 * report the error as a read. */
-					which |= EV_READ;
-					break;
-				} else {
-					/* The operation was a del:
-					 * report nothing. */
-					continue;
-				}
-
-			/* Other errors shouldn't occur. */
-			default:
-				errno = events[i].data;
-				return (-1);
-			}
-		} else if (events[i].filter == EVFILT_READ) {
-			which |= EV_READ;
-		} else if (events[i].filter == EVFILT_WRITE) {
-			which |= EV_WRITE;
-		} else if (events[i].filter == EVFILT_SIGNAL) {
-			which |= EV_SIGNAL;
-#ifdef EVFILT_USER
-		} else if (events[i].filter == EVFILT_USER) {
-			base->is_notify_pending = 0;
-#endif
-		}
-
-		if (!which)
-			continue;
-
-		if (events[i].filter == EVFILT_SIGNAL) {
-			evmap_signal_active_(base, events[i].ident, 1);
-		} else {
-			evmap_io_active_(base, events[i].ident, which | EV_ET);
-		}
-	}
-
-	if (res == kqop->events_size) {
-		/* We used all the events space that we have. Maybe we should
-		   make it bigger. */
-		kq_grow_events(kqop, kqop->events_size * 2);
-	}
-
-	return (0);
-}
-
-static void
-kqop_free(struct kqop *kqop)
-{
-	if (kqop->changes)
-		mm_free(kqop->changes);
-	if (kqop->events)
-		mm_free(kqop->events);
-	if (kqop->kq >= 0 && kqop->pid == getpid())
-		close(kqop->kq);
-	memset(kqop, 0, sizeof(struct kqop));
-	mm_free(kqop);
-}
-
-static void
-kq_dealloc(struct event_base *base)
-{
-	struct kqop *kqop = base->evbase;
-	evsig_dealloc_(base);
-	kqop_free(kqop);
-}
-
-/* signal handling */
-static int
-kq_sig_add(struct event_base *base, int nsignal, short old, short events, void *p)
-{
-	struct kqop *kqop = base->evbase;
-	struct kevent kev;
-	struct timespec timeout = { 0, 0 };
-	(void)p;
-
-	EVUTIL_ASSERT(nsignal >= 0 && nsignal < NSIG);
-
-	memset(&kev, 0, sizeof(kev));
-	kev.ident = nsignal;
-	kev.filter = EVFILT_SIGNAL;
-	kev.flags = EV_ADD;
-
-	/* Be ready for the signal if it is sent any
-	 * time between now and the next call to
-	 * kq_dispatch. */
-	if (kevent(kqop->kq, &kev, 1, NULL, 0, &timeout) == -1)
-		return (-1);
-
-        /* We can set the handler for most signals to SIG_IGN and
-         * still have them reported to us in the queue.  However,
-         * if the handler for SIGCHLD is SIG_IGN, the system reaps
-         * zombie processes for us, and we don't get any notification.
-         * This appears to be the only signal with this quirk. */
-	if (evsig_set_handler_(base, nsignal,
-                               nsignal == SIGCHLD ? SIG_DFL : SIG_IGN) == -1)
-		return (-1);
-
-	return (0);
-}
-
-static int
-kq_sig_del(struct event_base *base, int nsignal, short old, short events, void *p)
-{
-	struct kqop *kqop = base->evbase;
-	struct kevent kev;
-
-	struct timespec timeout = { 0, 0 };
-	(void)p;
-
-	EVUTIL_ASSERT(nsignal >= 0 && nsignal < NSIG);
-
-	memset(&kev, 0, sizeof(kev));
-	kev.ident = nsignal;
-	kev.filter = EVFILT_SIGNAL;
-	kev.flags = EV_DELETE;
-
-	/* Because we insert signal events
-	 * immediately, we need to delete them
-	 * immediately, too */
-	if (kevent(kqop->kq, &kev, 1, NULL, 0, &timeout) == -1)
-		return (-1);
-
-	if (evsig_restore_handler_(base, nsignal) == -1)
-		return (-1);
-
-	return (0);
-}
-
-
-/* OSX 10.6 and FreeBSD 8.1 add support for EVFILT_USER, which we can use
- * to wake up the event loop from another thread. */
-
-/* Magic number we use for our filter ID. */
-#define NOTIFY_IDENT 42
-
-int
-event_kq_add_notify_event_(struct event_base *base)
-{
-	struct kqop *kqop = base->evbase;
-#if defined(EVFILT_USER) && defined(NOTE_TRIGGER)
-	struct kevent kev;
-	struct timespec timeout = { 0, 0 };
-#endif
-
-	if (kqop->notify_event_added)
-		return 0;
-
-#if defined(EVFILT_USER) && defined(NOTE_TRIGGER)
-	memset(&kev, 0, sizeof(kev));
-	kev.ident = NOTIFY_IDENT;
-	kev.filter = EVFILT_USER;
-	kev.flags = EV_ADD | EV_CLEAR;
-
-	if (kevent(kqop->kq, &kev, 1, NULL, 0, &timeout) == -1) {
-		event_warn("kevent: adding EVFILT_USER event");
-		return -1;
-	}
-
-	kqop->notify_event_added = 1;
-
-	return 0;
-#else
-	return -1;
-#endif
-}
-
-int
-event_kq_notify_base_(struct event_base *base)
-{
-	struct kqop *kqop = base->evbase;
-#if defined(EVFILT_USER) && defined(NOTE_TRIGGER)
-	struct kevent kev;
-	struct timespec timeout = { 0, 0 };
-#endif
-	if (! kqop->notify_event_added)
-		return -1;
-
-#if defined(EVFILT_USER) && defined(NOTE_TRIGGER)
-	memset(&kev, 0, sizeof(kev));
-	kev.ident = NOTIFY_IDENT;
-	kev.filter = EVFILT_USER;
-	kev.fflags = NOTE_TRIGGER;
-
-	if (kevent(kqop->kq, &kev, 1, NULL, 0, &timeout) == -1) {
-		event_warn("kevent: triggering EVFILT_USER event");
-		return -1;
-	}
-
-	return 0;
-#else
-	return -1;
-#endif
-}
-
-#endif /* EVENT__HAVE_KQUEUE */