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/**
* WinPR: Windows Portable Runtime
* APC implementation
*
* Copyright 2021 David Fort <contact@hardening-consulting.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef WINPR_APC_H
#define WINPR_APC_H
#include <winpr/winpr.h>
#include <winpr/wtypes.h>
#ifndef _WIN32
#include <pthread.h>
typedef struct winpr_thread WINPR_THREAD;
typedef struct winpr_APC_item WINPR_APC_ITEM;
typedef struct winpr_poll_set WINPR_POLL_SET;
typedef void (*apc_treatment)(LPVOID arg);
typedef enum
{
APC_TYPE_USER,
APC_TYPE_TIMER,
APC_TYPE_HANDLE_FREE
} ApcType;
struct winpr_APC_item
{
ApcType type;
int pollFd;
DWORD pollMode;
apc_treatment completion;
LPVOID completionArgs;
BOOL markedForFree;
/* private fields used by the APC */
BOOL alwaysSignaled;
BOOL isSignaled;
DWORD boundThread;
BOOL linked;
BOOL markedForRemove;
WINPR_APC_ITEM *last, *next;
};
typedef enum
{
APC_REMOVE_OK,
APC_REMOVE_ERROR,
APC_REMOVE_DELAY_FREE
} APC_REMOVE_RESULT;
typedef struct
{
pthread_mutex_t mutex;
DWORD length;
WINPR_APC_ITEM *head, *tail;
BOOL treatingCompletions;
} APC_QUEUE;
BOOL apc_init(APC_QUEUE* apc);
BOOL apc_uninit(APC_QUEUE* apc);
void apc_register(WINPR_THREAD* thread, WINPR_APC_ITEM* addItem);
APC_REMOVE_RESULT apc_remove(WINPR_APC_ITEM* item);
BOOL apc_collectFds(WINPR_THREAD* thread, WINPR_POLL_SET* set, BOOL* haveAutoSignaled);
int apc_executeCompletions(WINPR_THREAD* thread, WINPR_POLL_SET* set, size_t startIndex);
void apc_cleanupThread(WINPR_THREAD* thread);
#endif
#endif /* WINPR_APC_H */
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