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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 11:19:16 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-07-24 09:53:24 +0000
commitb5f8ee61a7f7e9bd291dd26b0585d03eb686c941 (patch)
treed4d31289c39fc00da064a825df13a0b98ce95b10 /fluent-bit/lib/monkey/mk_core/deps/libevent/buffer_iocp.c
parentAdding upstream version 1.44.3. (diff)
downloadnetdata-b5f8ee61a7f7e9bd291dd26b0585d03eb686c941.tar.xz
netdata-b5f8ee61a7f7e9bd291dd26b0585d03eb686c941.zip
Adding upstream version 1.46.3.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fluent-bit/lib/monkey/mk_core/deps/libevent/buffer_iocp.c')
-rw-r--r--fluent-bit/lib/monkey/mk_core/deps/libevent/buffer_iocp.c326
1 files changed, 0 insertions, 326 deletions
diff --git a/fluent-bit/lib/monkey/mk_core/deps/libevent/buffer_iocp.c b/fluent-bit/lib/monkey/mk_core/deps/libevent/buffer_iocp.c
deleted file mode 100644
index 2d76a90e7..000000000
--- a/fluent-bit/lib/monkey/mk_core/deps/libevent/buffer_iocp.c
+++ /dev/null
@@ -1,326 +0,0 @@
-/*
- * Copyright (c) 2009-2012 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.
- */
-
-/**
- @file buffer_iocp.c
-
- This module implements overlapped read and write functions for evbuffer
- objects on Windows.
-*/
-#include "event2/event-config.h"
-#include "evconfig-private.h"
-
-#include "event2/buffer.h"
-#include "event2/buffer_compat.h"
-#include "event2/util.h"
-#include "event2/thread.h"
-#include "util-internal.h"
-#include "evthread-internal.h"
-#include "evbuffer-internal.h"
-#include "iocp-internal.h"
-#include "mm-internal.h"
-
-#include <winsock2.h>
-#include <windows.h>
-#include <stdio.h>
-
-#define MAX_WSABUFS 16
-
-/** An evbuffer that can handle overlapped IO. */
-struct evbuffer_overlapped {
- struct evbuffer buffer;
- /** The socket that we're doing overlapped IO on. */
- evutil_socket_t fd;
-
- /** pending I/O type */
- unsigned read_in_progress : 1;
- unsigned write_in_progress : 1;
-
- /** The first pinned chain in the buffer. */
- struct evbuffer_chain *first_pinned;
-
- /** How many chains are pinned; how many of the fields in buffers
- * are we using. */
- int n_buffers;
- WSABUF buffers[MAX_WSABUFS];
-};
-
-/** Given an evbuffer, return the correponding evbuffer structure, or NULL if
- * the evbuffer isn't overlapped. */
-static inline struct evbuffer_overlapped *
-upcast_evbuffer(struct evbuffer *buf)
-{
- if (!buf || !buf->is_overlapped)
- return NULL;
- return EVUTIL_UPCAST(buf, struct evbuffer_overlapped, buffer);
-}
-
-/** Unpin all the chains noted as pinned in 'eo'. */
-static void
-pin_release(struct evbuffer_overlapped *eo, unsigned flag)
-{
- int i;
- struct evbuffer_chain *next, *chain = eo->first_pinned;
-
- for (i = 0; i < eo->n_buffers; ++i) {
- EVUTIL_ASSERT(chain);
- next = chain->next;
- evbuffer_chain_unpin_(chain, flag);
- chain = next;
- }
-}
-
-void
-evbuffer_commit_read_(struct evbuffer *evbuf, ev_ssize_t nBytes)
-{
- struct evbuffer_overlapped *buf = upcast_evbuffer(evbuf);
- struct evbuffer_chain **chainp;
- size_t remaining, len;
- unsigned i;
-
- EVBUFFER_LOCK(evbuf);
- EVUTIL_ASSERT(buf->read_in_progress && !buf->write_in_progress);
- EVUTIL_ASSERT(nBytes >= 0); /* XXXX Can this be false? */
-
- evbuffer_unfreeze(evbuf, 0);
-
- chainp = evbuf->last_with_datap;
- if (!((*chainp)->flags & EVBUFFER_MEM_PINNED_R))
- chainp = &(*chainp)->next;
- remaining = nBytes;
- for (i = 0; remaining > 0 && i < (unsigned)buf->n_buffers; ++i) {
- EVUTIL_ASSERT(*chainp);
- len = buf->buffers[i].len;
- if (remaining < len)
- len = remaining;
- (*chainp)->off += len;
- evbuf->last_with_datap = chainp;
- remaining -= len;
- chainp = &(*chainp)->next;
- }
-
- pin_release(buf, EVBUFFER_MEM_PINNED_R);
-
- buf->read_in_progress = 0;
-
- evbuf->total_len += nBytes;
- evbuf->n_add_for_cb += nBytes;
-
- evbuffer_invoke_callbacks_(evbuf);
-
- evbuffer_decref_and_unlock_(evbuf);
-}
-
-void
-evbuffer_commit_write_(struct evbuffer *evbuf, ev_ssize_t nBytes)
-{
- struct evbuffer_overlapped *buf = upcast_evbuffer(evbuf);
-
- EVBUFFER_LOCK(evbuf);
- EVUTIL_ASSERT(buf->write_in_progress && !buf->read_in_progress);
- evbuffer_unfreeze(evbuf, 1);
- evbuffer_drain(evbuf, nBytes);
- pin_release(buf,EVBUFFER_MEM_PINNED_W);
- buf->write_in_progress = 0;
- evbuffer_decref_and_unlock_(evbuf);
-}
-
-struct evbuffer *
-evbuffer_overlapped_new_(evutil_socket_t fd)
-{
- struct evbuffer_overlapped *evo;
-
- evo = mm_calloc(1, sizeof(struct evbuffer_overlapped));
- if (!evo)
- return NULL;
-
- LIST_INIT(&evo->buffer.callbacks);
- evo->buffer.refcnt = 1;
- evo->buffer.last_with_datap = &evo->buffer.first;
-
- evo->buffer.is_overlapped = 1;
- evo->fd = fd;
-
- return &evo->buffer;
-}
-
-int
-evbuffer_launch_write_(struct evbuffer *buf, ev_ssize_t at_most,
- struct event_overlapped *ol)
-{
- struct evbuffer_overlapped *buf_o = upcast_evbuffer(buf);
- int r = -1;
- int i;
- struct evbuffer_chain *chain;
- DWORD bytesSent;
-
- if (!buf) {
- /* No buffer, or it isn't overlapped */
- return -1;
- }
-
- EVBUFFER_LOCK(buf);
- EVUTIL_ASSERT(!buf_o->read_in_progress);
- if (buf->freeze_start || buf_o->write_in_progress)
- goto done;
- if (!buf->total_len) {
- /* Nothing to write */
- r = 0;
- goto done;
- } else if (at_most < 0 || (size_t)at_most > buf->total_len) {
- at_most = buf->total_len;
- }
- evbuffer_freeze(buf, 1);
-
- buf_o->first_pinned = NULL;
- buf_o->n_buffers = 0;
- memset(buf_o->buffers, 0, sizeof(buf_o->buffers));
-
- chain = buf_o->first_pinned = buf->first;
-
- for (i=0; i < MAX_WSABUFS && chain; ++i, chain=chain->next) {
- WSABUF *b = &buf_o->buffers[i];
- b->buf = (char*)( chain->buffer + chain->misalign );
- evbuffer_chain_pin_(chain, EVBUFFER_MEM_PINNED_W);
-
- if ((size_t)at_most > chain->off) {
- /* XXXX Cast is safe for now, since win32 has no
- mmaped chains. But later, we need to have this
- add more WSAbufs if chain->off is greater than
- ULONG_MAX */
- b->len = (unsigned long)chain->off;
- at_most -= chain->off;
- } else {
- b->len = (unsigned long)at_most;
- ++i;
- break;
- }
- }
-
- buf_o->n_buffers = i;
- evbuffer_incref_(buf);
- if (WSASend(buf_o->fd, buf_o->buffers, i, &bytesSent, 0,
- &ol->overlapped, NULL)) {
- int error = WSAGetLastError();
- if (error != WSA_IO_PENDING) {
- /* An actual error. */
- pin_release(buf_o, EVBUFFER_MEM_PINNED_W);
- evbuffer_unfreeze(buf, 1);
- evbuffer_free(buf); /* decref */
- goto done;
- }
- }
-
- buf_o->write_in_progress = 1;
- r = 0;
-done:
- EVBUFFER_UNLOCK(buf);
- return r;
-}
-
-int
-evbuffer_launch_read_(struct evbuffer *buf, size_t at_most,
- struct event_overlapped *ol)
-{
- struct evbuffer_overlapped *buf_o = upcast_evbuffer(buf);
- int r = -1, i;
- int nvecs;
- int npin=0;
- struct evbuffer_chain *chain=NULL, **chainp;
- DWORD bytesRead;
- DWORD flags = 0;
- struct evbuffer_iovec vecs[MAX_WSABUFS];
-
- if (!buf_o)
- return -1;
- EVBUFFER_LOCK(buf);
- EVUTIL_ASSERT(!buf_o->write_in_progress);
- if (buf->freeze_end || buf_o->read_in_progress)
- goto done;
-
- buf_o->first_pinned = NULL;
- buf_o->n_buffers = 0;
- memset(buf_o->buffers, 0, sizeof(buf_o->buffers));
-
- if (evbuffer_expand_fast_(buf, at_most, MAX_WSABUFS) == -1)
- goto done;
- evbuffer_freeze(buf, 0);
-
- nvecs = evbuffer_read_setup_vecs_(buf, at_most,
- vecs, MAX_WSABUFS, &chainp, 1);
- for (i=0;i<nvecs;++i) {
- WSABUF_FROM_EVBUFFER_IOV(
- &buf_o->buffers[i],
- &vecs[i]);
- }
-
- buf_o->n_buffers = nvecs;
- buf_o->first_pinned = chain = *chainp;
-
- npin=0;
- for ( ; chain; chain = chain->next) {
- evbuffer_chain_pin_(chain, EVBUFFER_MEM_PINNED_R);
- ++npin;
- }
- EVUTIL_ASSERT(npin == nvecs);
-
- evbuffer_incref_(buf);
- if (WSARecv(buf_o->fd, buf_o->buffers, nvecs, &bytesRead, &flags,
- &ol->overlapped, NULL)) {
- int error = WSAGetLastError();
- if (error != WSA_IO_PENDING) {
- /* An actual error. */
- pin_release(buf_o, EVBUFFER_MEM_PINNED_R);
- evbuffer_unfreeze(buf, 0);
- evbuffer_free(buf); /* decref */
- goto done;
- }
- }
-
- buf_o->read_in_progress = 1;
- r = 0;
-done:
- EVBUFFER_UNLOCK(buf);
- return r;
-}
-
-evutil_socket_t
-evbuffer_overlapped_get_fd_(struct evbuffer *buf)
-{
- struct evbuffer_overlapped *buf_o = upcast_evbuffer(buf);
- return buf_o ? buf_o->fd : -1;
-}
-
-void
-evbuffer_overlapped_set_fd_(struct evbuffer *buf, evutil_socket_t fd)
-{
- struct evbuffer_overlapped *buf_o = upcast_evbuffer(buf);
- EVBUFFER_LOCK(buf);
- /* XXX is this right?, should it cancel current I/O operations? */
- if (buf_o)
- buf_o->fd = fd;
- EVBUFFER_UNLOCK(buf);
-}