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- /*
- * Copyright (c) 1992 Commodore-Amiga, Inc.
- *
- * This example is provided in electronic form by Commodore-Amiga, Inc. for
- * use with the "Amiga ROM Kernel Reference Manual: Devices", 3rd Edition,
- * published by Addison-Wesley (ISBN 0-201-56775-X).
- *
- * The "Amiga ROM Kernel Reference Manual: Devices" contains additional
- * information on the correct usage of the techniques and operating system
- * functions presented in these examples. The source and executable code
- * of these examples may only be distributed in free electronic form, via
- * bulletin board or as part of a fully non-commercial and freely
- * redistributable diskette. Both the source and executable code (including
- * comments) must be included, without modification, in any copy. This
- * example may not be published in printed form or distributed with any
- * commercial product. However, the programming techniques and support
- * routines set forth in these examples may be used in the development
- * of original executable software products for Commodore Amiga computers.
- *
- * All other rights reserved.
- *
- * This example is provided "as-is" and is subject to change; no
- * warranties are made. All use is at your own risk. No liability or
- * responsibility is assumed.
- *
- *****************************************************************************
- *
- * Multiple_Timers.c
- *
- * This program is designed to do multiple (3) time requests using one
- * OpenDevice. It creates a message port - TimerMP, creates an
- * extended I/O structure of type timerequest named TimerIO[0] and
- * then uses that to open the device. The other two time request
- * structures - TimerIO[1] and TimerIO[2] - are created using AllocMem
- * and then copying TimerIO[0] into them. The tv_secs field of each
- * structure is set and then three SendIOs are done with the requests.
- * The program then goes into a while loop until all messages are received.
- *
- * Compile with SAS C 5.10 lc -b1 -cfistq -v -y -L
- *
- * Run from CLI only
- */
-
- #include <exec/types.h>
- #include <exec/memory.h>
- #include <devices/timer.h>
-
- #include <clib/exec_protos.h>
- #include <clib/alib_protos.h>
-
- #include <stdio.h>
-
- #ifdef LATTICE
- int CXBRK(void) { return(0); } /* Disable Lattice CTRL/C handling */
- int chkabort(void) { return(0); } /* really */
- #endif
-
- VOID main(VOID);
-
- void main(void)
- {
- struct timerequest *TimerIO[3];
- struct MsgPort *TimerMP;
- struct Message *TimerMSG;
-
- ULONG error,x,seconds[3]={4,1,2}, microseconds[3]={0,0,0};
-
- int allin = 3;
- char *position[]={"last","second","first"};
-
- if (TimerMP = CreatePort(0,0))
- {
- if (TimerIO[0] = (struct timerequest *)
- CreateExtIO(TimerMP,sizeof(struct timerequest)) )
- {
- /* Open the device once */
- if (!(error=OpenDevice( TIMERNAME, UNIT_VBLANK,(struct IORequest *) TimerIO[0], 0L)))
- {
- /* Set command to TR_ADDREQUEST */
- TimerIO[0]->tr_node.io_Command = TR_ADDREQUEST;
-
- if (TimerIO[1]=(struct timerequest *)
- AllocMem(sizeof(struct timerequest),MEMF_PUBLIC | MEMF_CLEAR))
- {
- if (TimerIO[2]=(struct timerequest *)
- AllocMem(sizeof(struct timerequest),MEMF_PUBLIC | MEMF_CLEAR))
- {
- /* Copy fields from the request used to open the timer device */
- *TimerIO[1] = *TimerIO[0];
- *TimerIO[2] = *TimerIO[0];
-
- /* Initialize other fields */
- for (x=0;x<3;x++)
- {
- TimerIO[x]->tr_time.tv_secs = seconds[x];
- TimerIO[x]->tr_time.tv_micro = microseconds[x];
- printf("\nInitializing TimerIO[%d]",x);
- }
-
- printf("\n\nSending multiple requests\n\n");
-
- /* Send multiple requests asynchronously */
- /* Do not got to sleep yet... */
- SendIO((struct IORequest *)TimerIO[0]);
- SendIO((struct IORequest *)TimerIO[1]);
- SendIO((struct IORequest *)TimerIO[2]);
-
- /* There might be other processing done here */
-
- /* Now go to sleep with WaitPort() waiting for the requests */
- while (allin)
- {
- WaitPort(TimerMP);
- /* Get the reply message */
- TimerMSG=GetMsg(TimerMP);
- for (x=0;x<3;x++)
- if (TimerMSG==(struct Message *)TimerIO[x])
- printf("Request %ld finished %s\n",x,position[--allin]);
- }
-
- FreeMem(TimerIO[2],sizeof(struct timerequest));
- }
-
- else
- printf("Error: could not allocate TimerIO[2] memory\n");
-
- FreeMem(TimerIO[1],sizeof(struct timerequest));
- }
-
- else
- printf("Error could not allocate TimerIO[1] memory\n");
-
- CloseDevice((struct IORequest *) TimerIO[0]);
- }
-
- else
- printf("\nError: Could not OpenDevice\n");
-
- DeleteExtIO((struct IORequest *) TimerIO[0]);
- }
-
- else
- printf("Error: could not create IORequest\n");
-
- DeletePort(TimerMP);
- }
-
- else
- printf("\nError: Could not CreatePort\n");
- }
-