Adding upstream version 1.46.3.upstream

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

1 files changed, 0 insertions, 540 deletions

diff --git a/fluent-bit/lib/monkey/mk_core/deps/libevent/epoll.c b/fluent-bit/lib/monkey/mk_core/deps/libevent/epoll.c
deleted file mode 100644
index bf730b23d..000000000
--- a/fluent-bit/lib/monkey/mk_core/deps/libevent/epoll.c
+++ /dev/null
@@ -1,540 +0,0 @@
-/*
- * Copyright 2000-2007 Niels Provos <provos@citi.umich.edu>
- * Copyright 2007-2012 Niels Provos, 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_EPOLL
-
-#include <stdint.h>
-#include <sys/types.h>
-#include <sys/resource.h>
-#ifdef EVENT__HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-#include <sys/queue.h>
-#include <sys/epoll.h>
-#include <signal.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#ifdef EVENT__HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-#ifdef EVENT__HAVE_SYS_TIMERFD_H
-#include <sys/timerfd.h>
-#endif
-
-#include "event-internal.h"
-#include "evsignal-internal.h"
-#include "event2/thread.h"
-#include "evthread-internal.h"
-#include "log-internal.h"
-#include "evmap-internal.h"
-#include "changelist-internal.h"
-#include "time-internal.h"
-
-/* Since Linux 2.6.17, epoll is able to report about peer half-closed connection
-   using special EPOLLRDHUP flag on a read event.
-*/
-#if !defined(EPOLLRDHUP)
-#define EPOLLRDHUP 0
-#define EARLY_CLOSE_IF_HAVE_RDHUP 0
-#else
-#define EARLY_CLOSE_IF_HAVE_RDHUP EV_FEATURE_EARLY_CLOSE
-#endif
-
-#include "epolltable-internal.h"
-
-#if defined(EVENT__HAVE_SYS_TIMERFD_H) &&			  \
-	defined(EVENT__HAVE_TIMERFD_CREATE) &&			  \
-	defined(HAVE_POSIX_MONOTONIC) && defined(TFD_NONBLOCK) && \
-	defined(TFD_CLOEXEC)
-/* Note that we only use timerfd if TFD_NONBLOCK and TFD_CLOEXEC are available
-   and working.  This means that we can't support it on 2.6.25 (where timerfd
-   was introduced) or 2.6.26, since 2.6.27 introduced those flags.
- */
-#define USING_TIMERFD
-#endif
-
-struct epollop {
-	struct epoll_event *events;
-	int nevents;
-	int epfd;
-#ifdef USING_TIMERFD
-	int timerfd;
-#endif
-};
-
-static void *epoll_init(struct event_base *);
-static int epoll_dispatch(struct event_base *, struct timeval *);
-static void epoll_dealloc(struct event_base *);
-
-static const struct eventop epollops_changelist = {
-	"epoll (with changelist)",
-	epoll_init,
-	event_changelist_add_,
-	event_changelist_del_,
-	epoll_dispatch,
-	epoll_dealloc,
-	1, /* need reinit */
-	EV_FEATURE_ET|EV_FEATURE_O1| EARLY_CLOSE_IF_HAVE_RDHUP,
-	EVENT_CHANGELIST_FDINFO_SIZE
-};
-
-
-static int epoll_nochangelist_add(struct event_base *base, evutil_socket_t fd,
-    short old, short events, void *p);
-static int epoll_nochangelist_del(struct event_base *base, evutil_socket_t fd,
-    short old, short events, void *p);
-
-const struct eventop epollops = {
-	"epoll",
-	epoll_init,
-	epoll_nochangelist_add,
-	epoll_nochangelist_del,
-	epoll_dispatch,
-	epoll_dealloc,
-	1, /* need reinit */
-	EV_FEATURE_ET|EV_FEATURE_O1|EV_FEATURE_EARLY_CLOSE,
-	0
-};
-
-#define INITIAL_NEVENT 32
-#define MAX_NEVENT 4096
-
-/* On Linux kernels at least up to 2.6.24.4, epoll can't handle timeout
- * values bigger than (LONG_MAX - 999ULL)/HZ.  HZ in the wild can be
- * as big as 1000, and LONG_MAX can be as small as (1<<31)-1, so the
- * largest number of msec we can support here is 2147482.  Let's
- * round that down by 47 seconds.
- */
-#define MAX_EPOLL_TIMEOUT_MSEC (35*60*1000)
-
-static void *
-epoll_init(struct event_base *base)
-{
-	int epfd = -1;
-	struct epollop *epollop;
-
-#ifdef EVENT__HAVE_EPOLL_CREATE1
-	/* First, try the shiny new epoll_create1 interface, if we have it. */
-	epfd = epoll_create1(EPOLL_CLOEXEC);
-#endif
-	if (epfd == -1) {
-		/* Initialize the kernel queue using the old interface.  (The
-		size field is ignored   since 2.6.8.) */
-		if ((epfd = epoll_create(32000)) == -1) {
-			if (errno != ENOSYS)
-				event_warn("epoll_create");
-			return (NULL);
-		}
-		evutil_make_socket_closeonexec(epfd);
-	}
-
-	if (!(epollop = mm_calloc(1, sizeof(struct epollop)))) {
-		close(epfd);
-		return (NULL);
-	}
-
-	epollop->epfd = epfd;
-
-	/* Initialize fields */
-	epollop->events = mm_calloc(INITIAL_NEVENT, sizeof(struct epoll_event));
-	if (epollop->events == NULL) {
-		mm_free(epollop);
-		close(epfd);
-		return (NULL);
-	}
-	epollop->nevents = INITIAL_NEVENT;
-
-	if ((base->flags & EVENT_BASE_FLAG_EPOLL_USE_CHANGELIST) != 0 ||
-	    ((base->flags & EVENT_BASE_FLAG_IGNORE_ENV) == 0 &&
-		evutil_getenv_("EVENT_EPOLL_USE_CHANGELIST") != NULL)) {
-
-		base->evsel = &epollops_changelist;
-	}
-
-#ifdef USING_TIMERFD
-	/*
-	  The epoll interface ordinarily gives us one-millisecond precision,
-	  so on Linux it makes perfect sense to use the CLOCK_MONOTONIC_COARSE
-	  timer.  But when the user has set the new PRECISE_TIMER flag for an
-	  event_base, we can try to use timerfd to give them finer granularity.
-	*/
-	if ((base->flags & EVENT_BASE_FLAG_PRECISE_TIMER) &&
-	    base->monotonic_timer.monotonic_clock == CLOCK_MONOTONIC) {
-		int fd;
-		fd = epollop->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC);
-		if (epollop->timerfd >= 0) {
-			struct epoll_event epev;
-			memset(&epev, 0, sizeof(epev));
-			epev.data.fd = epollop->timerfd;
-			epev.events = EPOLLIN;
-			if (epoll_ctl(epollop->epfd, EPOLL_CTL_ADD, fd, &epev) < 0) {
-				event_warn("epoll_ctl(timerfd)");
-				close(fd);
-				epollop->timerfd = -1;
-			}
-		} else {
-			if (errno != EINVAL && errno != ENOSYS) {
-				/* These errors probably mean that we were
-				 * compiled with timerfd/TFD_* support, but
-				 * we're running on a kernel that lacks those.
-				 */
-				event_warn("timerfd_create");
-			}
-			epollop->timerfd = -1;
-		}
-	} else {
-		epollop->timerfd = -1;
-	}
-#endif
-
-	evsig_init_(base);
-
-	return (epollop);
-}
-
-static const char *
-change_to_string(int change)
-{
-	change &= (EV_CHANGE_ADD|EV_CHANGE_DEL);
-	if (change == EV_CHANGE_ADD) {
-		return "add";
-	} else if (change == EV_CHANGE_DEL) {
-		return "del";
-	} else if (change == 0) {
-		return "none";
-	} else {
-		return "???";
-	}
-}
-
-static const char *
-epoll_op_to_string(int op)
-{
-	return op == EPOLL_CTL_ADD?"ADD":
-	    op == EPOLL_CTL_DEL?"DEL":
-	    op == EPOLL_CTL_MOD?"MOD":
-	    "???";
-}
-
-#define PRINT_CHANGES(op, events, ch, status)  \
-	"Epoll %s(%d) on fd %d " status ". "       \
-	"Old events were %d; "                     \
-	"read change was %d (%s); "                \
-	"write change was %d (%s); "               \
-	"close change was %d (%s)",                \
-	epoll_op_to_string(op),                    \
-	events,                                    \
-	ch->fd,                                    \
-	ch->old_events,                            \
-	ch->read_change,                           \
-	change_to_string(ch->read_change),         \
-	ch->write_change,                          \
-	change_to_string(ch->write_change),        \
-	ch->close_change,                          \
-	change_to_string(ch->close_change)
-
-static int
-epoll_apply_one_change(struct event_base *base,
-    struct epollop *epollop,
-    const struct event_change *ch)
-{
-	struct epoll_event epev;
-	int op, events = 0;
-	int idx;
-
-	idx = EPOLL_OP_TABLE_INDEX(ch);
-	op = epoll_op_table[idx].op;
-	events = epoll_op_table[idx].events;
-
-	if (!events) {
-		EVUTIL_ASSERT(op == 0);
-		return 0;
-	}
-
-	if ((ch->read_change|ch->write_change) & EV_CHANGE_ET)
-		events |= EPOLLET;
-
-	memset(&epev, 0, sizeof(epev));
-	epev.data.fd = ch->fd;
-	epev.events = events;
-	if (epoll_ctl(epollop->epfd, op, ch->fd, &epev) == 0) {
-		event_debug((PRINT_CHANGES(op, epev.events, ch, "okay")));
-		return 0;
-	}
-
-	switch (op) {
-	case EPOLL_CTL_MOD:
-		if (errno == ENOENT) {
-			/* If a MOD operation fails with ENOENT, the
-			 * fd was probably closed and re-opened.  We
-			 * should retry the operation as an ADD.
-			 */
-			if (epoll_ctl(epollop->epfd, EPOLL_CTL_ADD, ch->fd, &epev) == -1) {
-				event_warn("Epoll MOD(%d) on %d retried as ADD; that failed too",
-				    (int)epev.events, ch->fd);
-				return -1;
-			} else {
-				event_debug(("Epoll MOD(%d) on %d retried as ADD; succeeded.",
-					(int)epev.events,
-					ch->fd));
-				return 0;
-			}
-		}
-		break;
-	case EPOLL_CTL_ADD:
-		if (errno == EEXIST) {
-			/* If an ADD operation fails with EEXIST,
-			 * either the operation was redundant (as with a
-			 * precautionary add), or we ran into a fun
-			 * kernel bug where using dup*() to duplicate the
-			 * same file into the same fd gives you the same epitem
-			 * rather than a fresh one.  For the second case,
-			 * we must retry with MOD. */
-			if (epoll_ctl(epollop->epfd, EPOLL_CTL_MOD, ch->fd, &epev) == -1) {
-				event_warn("Epoll ADD(%d) on %d retried as MOD; that failed too",
-				    (int)epev.events, ch->fd);
-				return -1;
-			} else {
-				event_debug(("Epoll ADD(%d) on %d retried as MOD; succeeded.",
-					(int)epev.events,
-					ch->fd));
-				return 0;
-			}
-		}
-		break;
-	case EPOLL_CTL_DEL:
-		if (errno == ENOENT || errno == EBADF || errno == EPERM) {
-			/* If a delete fails with one of these errors,
-			 * that's fine too: we closed the fd before we
-			 * got around to calling epoll_dispatch. */
-			event_debug(("Epoll DEL(%d) on fd %d gave %s: DEL was unnecessary.",
-				(int)epev.events,
-				ch->fd,
-				strerror(errno)));
-			return 0;
-		}
-		break;
-	default:
-		break;
-	}
-
-	event_warn(PRINT_CHANGES(op, epev.events, ch, "failed"));
-	return -1;
-}
-
-static int
-epoll_apply_changes(struct event_base *base)
-{
-	struct event_changelist *changelist = &base->changelist;
-	struct epollop *epollop = base->evbase;
-	struct event_change *ch;
-
-	int r = 0;
-	int i;
-
-	for (i = 0; i < changelist->n_changes; ++i) {
-		ch = &changelist->changes[i];
-		if (epoll_apply_one_change(base, epollop, ch) < 0)
-			r = -1;
-	}
-
-	return (r);
-}
-
-static int
-epoll_nochangelist_add(struct event_base *base, evutil_socket_t fd,
-    short old, short events, void *p)
-{
-	struct event_change ch;
-	ch.fd = fd;
-	ch.old_events = old;
-	ch.read_change = ch.write_change = ch.close_change = 0;
-	if (events & EV_WRITE)
-		ch.write_change = EV_CHANGE_ADD |
-		    (events & EV_ET);
-	if (events & EV_READ)
-		ch.read_change = EV_CHANGE_ADD |
-		    (events & EV_ET);
-	if (events & EV_CLOSED)
-		ch.close_change = EV_CHANGE_ADD |
-		    (events & EV_ET);
-
-	return epoll_apply_one_change(base, base->evbase, &ch);
-}
-
-static int
-epoll_nochangelist_del(struct event_base *base, evutil_socket_t fd,
-    short old, short events, void *p)
-{
-	struct event_change ch;
-	ch.fd = fd;
-	ch.old_events = old;
-	ch.read_change = ch.write_change = ch.close_change = 0;
-	if (events & EV_WRITE)
-		ch.write_change = EV_CHANGE_DEL;
-	if (events & EV_READ)
-		ch.read_change = EV_CHANGE_DEL;
-	if (events & EV_CLOSED)
-		ch.close_change = EV_CHANGE_DEL;
-
-	return epoll_apply_one_change(base, base->evbase, &ch);
-}
-
-static int
-epoll_dispatch(struct event_base *base, struct timeval *tv)
-{
-	struct epollop *epollop = base->evbase;
-	struct epoll_event *events = epollop->events;
-	int i, res;
-	long timeout = -1;
-
-#ifdef USING_TIMERFD
-	if (epollop->timerfd >= 0) {
-		struct itimerspec is;
-		is.it_interval.tv_sec = 0;
-		is.it_interval.tv_nsec = 0;
-		if (tv == NULL) {
-			/* No timeout; disarm the timer. */
-			is.it_value.tv_sec = 0;
-			is.it_value.tv_nsec = 0;
-		} else {
-			if (tv->tv_sec == 0 && tv->tv_usec == 0) {
-				/* we need to exit immediately; timerfd can't
-				 * do that. */
-				timeout = 0;
-			}
-			is.it_value.tv_sec = tv->tv_sec;
-			is.it_value.tv_nsec = tv->tv_usec * 1000;
-		}
-		/* TODO: we could avoid unnecessary syscalls here by only
-		   calling timerfd_settime when the top timeout changes, or
-		   when we're called with a different timeval.
-		*/
-		if (timerfd_settime(epollop->timerfd, 0, &is, NULL) < 0) {
-			event_warn("timerfd_settime");
-		}
-	} else
-#endif
-	if (tv != NULL) {
-		timeout = evutil_tv_to_msec_(tv);
-		if (timeout < 0 || timeout > MAX_EPOLL_TIMEOUT_MSEC) {
-			/* Linux kernels can wait forever if the timeout is
-			 * too big; see comment on MAX_EPOLL_TIMEOUT_MSEC. */
-			timeout = MAX_EPOLL_TIMEOUT_MSEC;
-		}
-	}
-
-	epoll_apply_changes(base);
-	event_changelist_remove_all_(&base->changelist, base);
-
-	EVBASE_RELEASE_LOCK(base, th_base_lock);
-
-	res = epoll_wait(epollop->epfd, events, epollop->nevents, timeout);
-
-	EVBASE_ACQUIRE_LOCK(base, th_base_lock);
-
-	if (res == -1) {
-		if (errno != EINTR) {
-			event_warn("epoll_wait");
-			return (-1);
-		}
-
-		return (0);
-	}
-
-	event_debug(("%s: epoll_wait reports %d", __func__, res));
-	EVUTIL_ASSERT(res <= epollop->nevents);
-
-	for (i = 0; i < res; i++) {
-		int what = events[i].events;
-		short ev = 0;
-#ifdef USING_TIMERFD
-		if (events[i].data.fd == epollop->timerfd)
-			continue;
-#endif
-
-		if (what & (EPOLLHUP|EPOLLERR)) {
-			ev = EV_READ | EV_WRITE;
-		} else {
-			if (what & EPOLLIN)
-				ev |= EV_READ;
-			if (what & EPOLLOUT)
-				ev |= EV_WRITE;
-			if (what & EPOLLRDHUP)
-				ev |= EV_CLOSED;
-		}
-
-		if (!ev)
-			continue;
-
-		evmap_io_active_(base, events[i].data.fd, ev | EV_ET);
-	}
-
-	if (res == epollop->nevents && epollop->nevents < MAX_NEVENT) {
-		/* We used all of the event space this time.  We should
-		   be ready for more events next time. */
-		int new_nevents = epollop->nevents * 2;
-		struct epoll_event *new_events;
-
-		new_events = mm_realloc(epollop->events,
-		    new_nevents * sizeof(struct epoll_event));
-		if (new_events) {
-			epollop->events = new_events;
-			epollop->nevents = new_nevents;
-		}
-	}
-
-	return (0);
-}
-
-
-static void
-epoll_dealloc(struct event_base *base)
-{
-	struct epollop *epollop = base->evbase;
-
-	evsig_dealloc_(base);
-	if (epollop->events)
-		mm_free(epollop->events);
-	if (epollop->epfd >= 0)
-		close(epollop->epfd);
-#ifdef USING_TIMERFD
-	if (epollop->timerfd >= 0)
-		close(epollop->timerfd);
-#endif
-
-	memset(epollop, 0, sizeof(struct epollop));
-	mm_free(epollop);
-}
-
-#endif /* EVENT__HAVE_EPOLL */