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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2011. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifdef __WIN32__
#include <windows.h>
#endif
#include "erl_driver.h"
static ErlDrvData start(ErlDrvPort port,
char *command);
static void output(ErlDrvData drv_data,
char *buf, int len);
static void ready_async(ErlDrvData drv_data,
ErlDrvThreadData thread_data);
static ErlDrvEntry otp_9302_drv_entry = {
NULL /* init */,
start,
NULL /* stop */,
output,
NULL /* ready_input */,
NULL /* ready_output */,
"otp_9302_drv",
NULL /* finish */,
NULL /* handle */,
NULL /* control */,
NULL /* timeout */,
NULL /* outputv */,
ready_async,
NULL /* flush */,
NULL /* call */,
NULL /* event */,
ERL_DRV_EXTENDED_MARKER,
ERL_DRV_EXTENDED_MAJOR_VERSION,
ERL_DRV_EXTENDED_MINOR_VERSION,
ERL_DRV_FLAG_USE_PORT_LOCKING,
NULL /* handle2 */,
NULL /* handle_monitor */
};
DRIVER_INIT(otp_9302_drv)
{
return &otp_9302_drv_entry;
}
static ErlDrvData start(ErlDrvPort port,
char *command)
{
return (ErlDrvData) port;
}
typedef struct {
ErlDrvPort port;
ErlDrvTermData receiver;
int block;
int cancel;
int eoj;
} Otp9302AsyncData;
static void async_invoke(void *data)
{
Otp9302AsyncData *adata = (Otp9302AsyncData *) data;
char *what = (adata->block
? "block"
: (adata->cancel
? "cancel"
: (adata->eoj
? "end_of_jobs"
: "job")));
ErlDrvTermData spec[] = {
ERL_DRV_PORT, driver_mk_port(adata->port),
ERL_DRV_ATOM, driver_mk_atom(what),
ERL_DRV_TUPLE, 2
};
driver_send_term(adata->port, adata->receiver,
spec, sizeof(spec)/sizeof(spec[0]));
if (adata->block) {
#ifdef __WIN32__
Sleep((DWORD) 2000);
#else
sleep(2);
#endif
}
}
static void output(ErlDrvData drv_data,
char *buf, int len)
{
ErlDrvPort port = (ErlDrvPort) drv_data;
ErlDrvTermData caller = driver_caller(port);
unsigned int key = (unsigned int) port;
long id[5];
Otp9302AsyncData *ad[5];
int i;
for (i = 0; i < sizeof(ad)/sizeof(ad[0]); i++) {
ad[i] = driver_alloc(sizeof(Otp9302AsyncData));
if (!ad[i])
abort();
ad[i]->port = port;
ad[i]->receiver = caller;
ad[i]->block = 0;
ad[i]->eoj = 0;
ad[i]->cancel = 0;
}
ad[0]->block = 1;
ad[2]->cancel = 1;
ad[4]->eoj = 1;
for (i = 0; i < sizeof(id)/sizeof(id[0]); i++)
id[i] = driver_async(port, &key, async_invoke, ad[i], driver_free);
if (id[2] > 0)
driver_async_cancel(id[2]);
}
static void ready_async(ErlDrvData drv_data,
ErlDrvThreadData thread_data)
{
if ((void *) thread_data)
driver_free((void *) thread_data);
}
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