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/* KInterbasDB Python Package - Header File for ThreadSafeFIFOQueue
*
* Version 3.3
*
* The following contributors hold Copyright (C) over their respective
* portions of code (see license.txt for details):
*
* [Original Author (maintained through version 2.0-0.3.1):]
* 1998-2001 [alex] Alexander Kuznetsov <alexan@users.sourceforge.net>
* [Maintainers (after version 2.0-0.3.1):]
* 2001-2002 [maz] Marek Isalski <kinterbasdb@maz.nu>
* 2002-2007 [dsr] David Rushby <woodsplitter@rocketmail.com>
* [Contributors:]
* 2001 [eac] Evgeny A. Cherkashin <eugeneai@icc.ru>
* 2001-2002 [janez] Janez Jere <janez.jere@void.si> */
#ifndef _KISUPPORT_THREADSAFE_FIFO_QUEUE_H
#define _KISUPPORT_THREADSAFE_FIFO_QUEUE_H
#include "_kisupport.h"
typedef void (*QueueNodeDelFunc)(void *);
typedef struct _QueueNode {
volatile void *payload;
volatile QueueNodeDelFunc payload_del_func;
volatile struct _QueueNode *next;
} QueueNode;
typedef struct {
PlatformMutexType lock;
/* There are so many subtle differences between pthread_cond_t objects and
* Windows Event objects that it's less error-prone to ifdef the operations
* inline than to try to build a uniform abstraction.
* Clients of the queue aren't aware of what synch primitives it's using
* under the hood anyway, so the platform-specificity doesn't leak into other
* parts of the code base. */
#ifdef PLATFORM_WINDOWS
HANDLE
#else
pthread_cond_t
#endif
not_empty;
volatile boolean cancelled;
volatile boolean closed;
volatile QueueNode *head;
volatile QueueNode *tail;
} ThreadSafeFIFOQueue;
#endif /* if not def _KISUPPORT_THREADSAFE_FIFO_QUEUE_H */
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