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Diffstat (limited to 'protocols/Telegram/libevent/event_iocp.c')
-rw-r--r--protocols/Telegram/libevent/event_iocp.c294
1 files changed, 0 insertions, 294 deletions
diff --git a/protocols/Telegram/libevent/event_iocp.c b/protocols/Telegram/libevent/event_iocp.c
deleted file mode 100644
index a9902fbc42..0000000000
--- a/protocols/Telegram/libevent/event_iocp.c
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
- * Copyright (c) 2009-2012 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 "evconfig-private.h"
-
-#ifndef _WIN32_WINNT
-/* Minimum required for InitializeCriticalSectionAndSpinCount */
-#define _WIN32_WINNT 0x0403
-#endif
-#include <winsock2.h>
-#include <windows.h>
-#include <process.h>
-#include <stdio.h>
-#include <mswsock.h>
-
-#include "event2/util.h"
-#include "util-internal.h"
-#include "iocp-internal.h"
-#include "log-internal.h"
-#include "mm-internal.h"
-#include "event-internal.h"
-#include "evthread-internal.h"
-
-#define NOTIFICATION_KEY ((ULONG_PTR)-1)
-
-void
-event_overlapped_init_(struct event_overlapped *o, iocp_callback cb)
-{
- memset(o, 0, sizeof(struct event_overlapped));
- o->cb = cb;
-}
-
-static void
-handle_entry(OVERLAPPED *o, ULONG_PTR completion_key, DWORD nBytes, int ok)
-{
- struct event_overlapped *eo =
- EVUTIL_UPCAST(o, struct event_overlapped, overlapped);
- eo->cb(eo, completion_key, nBytes, ok);
-}
-
-static void
-loop(void *port_)
-{
- struct event_iocp_port *port = port_;
- long ms = port->ms;
- HANDLE p = port->port;
-
- if (ms <= 0)
- ms = INFINITE;
-
- while (1) {
- OVERLAPPED *overlapped=NULL;
- ULONG_PTR key=0;
- DWORD bytes=0;
- int ok = GetQueuedCompletionStatus(p, &bytes, &key,
- &overlapped, ms);
- EnterCriticalSection(&port->lock);
- if (port->shutdown) {
- if (--port->n_live_threads == 0)
- ReleaseSemaphore(port->shutdownSemaphore, 1,
- NULL);
- LeaveCriticalSection(&port->lock);
- return;
- }
- LeaveCriticalSection(&port->lock);
-
- if (key != NOTIFICATION_KEY && overlapped)
- handle_entry(overlapped, key, bytes, ok);
- else if (!overlapped)
- break;
- }
- event_warnx("GetQueuedCompletionStatus exited with no event.");
- EnterCriticalSection(&port->lock);
- if (--port->n_live_threads == 0)
- ReleaseSemaphore(port->shutdownSemaphore, 1, NULL);
- LeaveCriticalSection(&port->lock);
-}
-
-int
-event_iocp_port_associate_(struct event_iocp_port *port, evutil_socket_t fd,
- ev_uintptr_t key)
-{
- HANDLE h;
- h = CreateIoCompletionPort((HANDLE)fd, port->port, key, port->n_threads);
- if (!h)
- return -1;
- return 0;
-}
-
-static void *
-get_extension_function(SOCKET s, const GUID *which_fn)
-{
- void *ptr = NULL;
- DWORD bytes=0;
- WSAIoctl(s, SIO_GET_EXTENSION_FUNCTION_POINTER,
- (GUID*)which_fn, sizeof(*which_fn),
- &ptr, sizeof(ptr),
- &bytes, NULL, NULL);
-
- /* No need to detect errors here: if ptr is set, then we have a good
- function pointer. Otherwise, we should behave as if we had no
- function pointer.
- */
- return ptr;
-}
-
-/* Mingw doesn't have these in its mswsock.h. The values are copied from
- wine.h. Perhaps if we copy them exactly, the cargo will come again.
-*/
-#ifndef WSAID_ACCEPTEX
-#define WSAID_ACCEPTEX \
- {0xb5367df1,0xcbac,0x11cf,{0x95,0xca,0x00,0x80,0x5f,0x48,0xa1,0x92}}
-#endif
-#ifndef WSAID_CONNECTEX
-#define WSAID_CONNECTEX \
- {0x25a207b9,0xddf3,0x4660,{0x8e,0xe9,0x76,0xe5,0x8c,0x74,0x06,0x3e}}
-#endif
-#ifndef WSAID_GETACCEPTEXSOCKADDRS
-#define WSAID_GETACCEPTEXSOCKADDRS \
- {0xb5367df2,0xcbac,0x11cf,{0x95,0xca,0x00,0x80,0x5f,0x48,0xa1,0x92}}
-#endif
-
-static int extension_fns_initialized = 0;
-
-static void
-init_extension_functions(struct win32_extension_fns *ext)
-{
- const GUID acceptex = WSAID_ACCEPTEX;
- const GUID connectex = WSAID_CONNECTEX;
- const GUID getacceptexsockaddrs = WSAID_GETACCEPTEXSOCKADDRS;
- SOCKET s = socket(AF_INET, SOCK_STREAM, 0);
- if (s == INVALID_SOCKET)
- return;
- ext->AcceptEx = get_extension_function(s, &acceptex);
- ext->ConnectEx = get_extension_function(s, &connectex);
- ext->GetAcceptExSockaddrs = get_extension_function(s,
- &getacceptexsockaddrs);
- closesocket(s);
-
- extension_fns_initialized = 1;
-}
-
-static struct win32_extension_fns the_extension_fns;
-
-const struct win32_extension_fns *
-event_get_win32_extension_fns_(void)
-{
- return &the_extension_fns;
-}
-
-#define N_CPUS_DEFAULT 2
-
-struct event_iocp_port *
-event_iocp_port_launch_(int n_cpus)
-{
- struct event_iocp_port *port;
- int i;
-
- if (!extension_fns_initialized)
- init_extension_functions(&the_extension_fns);
-
- if (!(port = mm_calloc(1, sizeof(struct event_iocp_port))))
- return NULL;
-
- if (n_cpus <= 0)
- n_cpus = N_CPUS_DEFAULT;
- port->n_threads = n_cpus * 2;
- port->threads = mm_calloc(port->n_threads, sizeof(HANDLE));
- if (!port->threads)
- goto err;
-
- port->port = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0,
- n_cpus);
- port->ms = -1;
- if (!port->port)
- goto err;
-
- port->shutdownSemaphore = CreateSemaphore(NULL, 0, 1, NULL);
- if (!port->shutdownSemaphore)
- goto err;
-
- for (i=0; i<port->n_threads; ++i) {
- ev_uintptr_t th = _beginthread(loop, 0, port);
- if (th == (ev_uintptr_t)-1)
- goto err;
- port->threads[i] = (HANDLE)th;
- ++port->n_live_threads;
- }
-
- InitializeCriticalSectionAndSpinCount(&port->lock, 1000);
-
- return port;
-err:
- if (port->port)
- CloseHandle(port->port);
- if (port->threads)
- mm_free(port->threads);
- if (port->shutdownSemaphore)
- CloseHandle(port->shutdownSemaphore);
- mm_free(port);
- return NULL;
-}
-
-static void
-event_iocp_port_unlock_and_free_(struct event_iocp_port *port)
-{
- DeleteCriticalSection(&port->lock);
- CloseHandle(port->port);
- CloseHandle(port->shutdownSemaphore);
- mm_free(port->threads);
- mm_free(port);
-}
-
-static int
-event_iocp_notify_all(struct event_iocp_port *port)
-{
- int i, r, ok=1;
- for (i=0; i<port->n_threads; ++i) {
- r = PostQueuedCompletionStatus(port->port, 0, NOTIFICATION_KEY,
- NULL);
- if (!r)
- ok = 0;
- }
- return ok ? 0 : -1;
-}
-
-int
-event_iocp_shutdown_(struct event_iocp_port *port, long waitMsec)
-{
- DWORD ms = INFINITE;
- int n;
-
- EnterCriticalSection(&port->lock);
- port->shutdown = 1;
- LeaveCriticalSection(&port->lock);
- event_iocp_notify_all(port);
-
- if (waitMsec >= 0)
- ms = waitMsec;
-
- WaitForSingleObject(port->shutdownSemaphore, ms);
- EnterCriticalSection(&port->lock);
- n = port->n_live_threads;
- LeaveCriticalSection(&port->lock);
- if (n == 0) {
- event_iocp_port_unlock_and_free_(port);
- return 0;
- } else {
- return -1;
- }
-}
-
-int
-event_iocp_activate_overlapped_(
- struct event_iocp_port *port, struct event_overlapped *o,
- ev_uintptr_t key, ev_uint32_t n)
-{
- BOOL r;
-
- r = PostQueuedCompletionStatus(port->port, n, key, &o->overlapped);
- return (r==0) ? -1 : 0;
-}
-
-struct event_iocp_port *
-event_base_get_iocp_(struct event_base *base)
-{
-#ifdef _WIN32
- return base->iocp;
-#else
- return NULL;
-#endif
-}