1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/* Definition of the threading support module.
*
* Copyright 2007 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of rsyslog.
*
* Rsyslog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rsyslog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Rsyslog. If not, see <http://www.gnu.org/licenses/>.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
*/
#ifndef THREADS_H_INCLUDED
#define THREADS_H_INCLUDED
/* type of sync tools for terminating the thread */
typedef enum eTermSyncType {
eTermSync_NONE = 0, /* no cleanup necessary, just cancel thread */
eTermSync_SIGNAL /* termination via pthread_kill() */
} eTermSyncType_t;
/* the thread object */
typedef struct thrdInfo {
eTermSyncType_t eTermTool;
pthread_mutex_t *mutTermOK; /* Is it ok to terminate that thread now? */
int bIsActive; /* Is thread running? */
int bShallStop; /* set to 1 if the thread should be stopped ? */
rsRetVal (*pUsrThrdMain)(struct thrdInfo*); /* user thread main to be called in new thread */
rsRetVal (*pAfterRun)(struct thrdInfo*); /* cleanup function */
pthread_t thrdID;
} thrdInfo_t;
/* this is the first approach to a queue, this time with static
* memory.
*/
typedef struct {
void** pbuf;
long head, tail;
int full, empty;
pthread_mutex_t *mut;
pthread_cond_t *notFull, *notEmpty;
} msgQueue;
/* prototypes */
rsRetVal thrdExit(void);
rsRetVal thrdInit(void);
rsRetVal thrdTerminate(thrdInfo_t *pThis);
rsRetVal thrdTerminateAll(void);
rsRetVal thrdCreate(rsRetVal (*thrdMain)(thrdInfo_t*), eTermSyncType_t eTermSyncType, rsRetVal(*afterRun)(thrdInfo_t *));
rsRetVal thrdSleep(thrdInfo_t *pThis, int iSeconds, int iuSeconds);
msgQueue *queueInit (void);
void queueDelete (msgQueue *q);
void queueAdd (msgQueue *q, void* in);
void queueDel (msgQueue *q, void **out);
/* go-away's */
extern int iMainMsgQueueSize;
extern msgQueue *pMsgQueue;
/* macros (replace inline functions) */
/*TODO: remove these macros once we now we can live without -- rgerhards, 2007-12-20
* #define thrdBlockTermination(pThis) {dbgprintf("lock mutex\n"); pthread_mutex_lock((pThis)->mutTermOK) ;}
* #define thrdUnblockTermination(pThis) {dbgprintf("unlock mutex\n"); pthread_mutex_unlock((pThis)->mutTermOK) ;}
*/
#define thrdBlockTermination(pThis)
#define thrdUnblockTermination(pThis)
#endif /* #ifndef THREADS_H_INCLUDED */
|
