НОВОЕ: OS/2 GURU - Вопросы и ответы

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Interaction of processes


TITLE: Interaction of processes

DATE: 2012-08-11 17:56:09

AUTHOR: Capricorn
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........

..... ..........., ....... ..... .... ... ............. OS (. . .... ... ...... .......... .. ..........) .... ... ...... ............ . .............. .......... .............. ..... ........... ..........., ....... ...... ........ . ....... . OS/2 ... .... .... .......... ......... ..........: ........, ....., ..... (...........) ......, ........ .... . ....... ..... ... .....-..... ....... . ............ ....... .......... .., .. ....... . ..... ...... ......-.. ........ .......... .. ... ......, .......... ............. .... ...... ...... - ........ ........... ...... ......... . .... ............ .. .. .............. .. ......., .......... ...... ....

........

........ ...... ..... ....: ............. .......... . ........ ...... .... 2 .........: "....." . "........". .... ............. ....... . ..., ... ............... ....... ........ ........., ..... .. ......., . .... .., ............ ..... .......... 2 .... .........: ...... . ........

.) ....... .... "event" (".......") ..... ... ...., ..... ......... ...... ..... ........., .... ...... .... ........ ......... .......

......: 

/*************/
/*           */
/* ....... 1 */
/*           */
/*************/

#define INCL_DOS
#include 

PSZ  szSemName  = "\\SEM32\\EVENT"; /* ... ......... ...... ..... ....... \SEM32\ */
HEV  hevEvent1  = 0;                /* .......... ........ */

if (DosCreateEventSem(szSemName,    /* ... ............ ........  */
                    &hevEvent1,     /* .... ..... ......... .......... ........ */
                    DC_SEM_SHARED,  /* ........... ....... */
                    FALSE))         /* ....... ....... . .......... (.......) ......... */
   return 1;  /* ....... ....... .. ....... */

/* ... ...-.. ...... 
   .. ..... ....... ...... .... ..... .....
   ............ (............) ........ */

DosPostEventSem(hevEvent); /* ......... ........ ......... (............) */
  
/* .......... ...... */

DosCloseEventSem(hevEvent1);      /* ........... .. ........ */

 

/*************/
/*           */
/* ....... 2 */
/*           */
/*************/

..... (pipes)

[..........]

........... ......

[..........]

.......

... .... ...... .............. ..... .......... - ....... (queues). ... ... .......... ....., ....... ......-.. ........ ......... . ...... .... (pipes). .. ... ......, .......... ............. ..... ..... ....... ........... ....... ........ .., ... ..-........

...., ....... ............ ..... ........ ...... ............ ... ...-.. .......... ....... ......... Presentation Manager'., .. .... ............ ........, ....... .. ..... .. ....... ....... ........ ....... . ..., ... .. ...... .. ........, ....... ..... ........ .. ...... . ...... .........., ........ (FIFO), .. . . ...... ..... (LIFO), . ....., .. ............

....... ...... ............

.... ....., .... ....... (....), ....... .. ....... ....... ........, ....... ....... . ....... ..., ...... (....... .. .........), ......... .. . ..... .... .......... .........., ... ............ ....... ....... ............ .....

......: 

/**********************/
/*                    */
/* ....... 1 (......) */
/*                    */
/**********************/

#define INCL_DOS
#include 

#define QUEUE_FIFO 0	// .......
#define QUEUE_LIFO 1	// ....
#define QUEUE_PRIO 2	// .. ...........

#define MSG_QUIT   0x0001 /* ............. ......... ... .......... ..... */

#define QUEUE_NAME "\\QUEUES\\special.que"	/* ... ........
						 * ...... ..... ....... \QUEUES\
						 */

/* ......., ....... ..... ............ ......... */
BOOL processMessage(ULONG ulMessageId, ULONG ulDataSize, PVOID pvData);

int main(void)
.
	HQUEUE hQueue;	/* .... ..... ....... ..... ....... */
	APIRET rc;	/* ......... ...... ....... API */	

	/* ......... ....... */
	rc = DosCreateQueue(&hQueue, QUEUE_FIFO, QUE_NAME);
	if (rc)
		return rc;
		
	/* .... ......... ......... .. ....... */	
	while(TRUE)
	.
		REQUESTDATA requestData;        /* ......... ... ......... ...... ....... */
		ULONG       ulDataSize;         /* .... ..... ....... ..... .......... ...... */
		PVOID       pvData;             /* .... ..... ........ ...... .. .......... ...... */
		rc = DosReadQueue(hQueue,       /* ..... ....... */
                                 &requestData, /* ...... ....... */
                                 &ulDataSize,  /* ..... .......... ...... */
                                 &pvData,      /* .......... ...... */
                                 0,            /* ...... ...... ....... .. ....... */
                                 FALSE,        /* .... */
                                 0,            /* .........  .. ..... */
                                 NULLHANDLE);  /* ..... ........-.......  .. ..... */
		if (rc || requestData.ulData==MSG_QUIT)
			break;
		processMessage(ulMessageId, ulDataSize, pvData);
	.
	rc = DosCloseQueue(hQueue);             /* ....... ....... */
	return rc;
.

 

/**********************/
/*                    */
/* ....... 2 (......) */
/*                    */
/**********************/

#define MSG_QUIT   0x0001 /* ............. ......... ... .......... ..... */

#define QUEUE_NAME "\\QUEUES\\special.que"	/* ... ........
						 * ...... ..... ....... \QUEUES\
#define INCL_DOS
#include 

int main(void)
.
	HQUEUE hQueue;	/* .... ..... ....... ..... ....... */
	APIRET rc;	/* ......... ...... ....... API */	
	PID	pid;	/* ............. ........, .......... ....... */

	/* ......... ....... */
	rc = DosOpenQueue(&pid, &hQueue, QUE_NAME);
	if (rc)
		return rc;

	rc = DosWriteQueue(hQueue, MSG_QUIT, 0L, NULL, 0L); /* .......... . ....... .........*/
	rc = DosCloseQueue(hQueue);                         /* ......... ....... */
	return rc;
.

. ...... ....... .. ...... ....... ....... . ....... ........ ...... ....... ......... ....... . .......... .... ............ .... ......... . .......... ...... (MSG_QUIT). ...... ......., ....... ... ........., ......... .... .......

........ ........, ... ....... DosCloseQueue() .. ...., ....... ..... ........ ... ...... ... ...... ....... ..... ......., ........ . .... ........

... . ... .. ............ ........ ..... .......? .... . ..., ... ... ............. .... .. .......... ..... .... . ........... ....... ....... ... ......, ..... .......... ......... .......... ....... ...... ....... .. ..... ...... ..... ...... .... ...... ....., ..... .... ....... ....... ....... . ..... ........ ... ......... .....-.. ......., .. ....... ...... ....... ...... ............ . ...... ...... ....... ....... ......., .. .. ........., .......... . ....... ... ... . ........ ..... .........

 

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Comments:

System requirements of eComStation are low. It works on netbooks and old Pentium. (Of course, it works on modern 2- / 4- or 8-core computers). eCS 2.0 what's new?

 


 

 

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