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/*
* %CopyrightBegin%
*
* SPDX-License-Identifier: Apache-2.0
*
* Copyright Ericsson AB 2001-2025. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
/*
* Include file for erlang driver writers.
*/
#ifndef __ERL_SYS_DRIVER_H__
#define __ERL_SYS_DRIVER_H__
#ifdef __ERL_DRIVER_H__
#error erl_sys_driver.h cannot be included after erl_driver.h
#endif
#define ERL_SYS_DRV
typedef SWord ErlDrvEvent; /* An event to be selected on. */
typedef struct _SysDriverOpts SysDriverOpts;
#include "erl_driver.h"
/*
* This structure contains options to all built in drivers.
* None of the drivers use all of the fields.
*/
struct _SysDriverOpts {
Uint ifd; /* Input file descriptor (fd driver). */
Uint ofd; /* Outputfile descriptor (fd driver). */
int packet_bytes; /* Number of bytes in packet header. */
int read_write; /* Read and write bits. */
int use_stdio; /* Use standard I/O: TRUE or FALSE. */
int redir_stderr; /* Redirect stderr to stdout: TRUE/FALSE. */
int hide_window; /* Hide this windows (Windows). */
int exit_status; /* Report exit status of subprocess. */
int overlapped_io; /* Only has effect on windows NT et al */
erts_osenv_t envir; /* Environment of the port process */
char **argv; /* Argument vector in Unix'ish format. */
char *wd; /* Working directory. */
unsigned spawn_type; /* Bitfield of ERTS_SPAWN_DRIVER |
ERTS_SPAWN_EXTERNAL | both*/
int parallelism; /* Optimize for parallelism */
ErlDrvSizeT high_watermark;
ErlDrvSizeT low_watermark;
ErlDrvSizeT high_msgq_watermark;
ErlDrvSizeT low_msgq_watermark;
char port_watermarks_set;
char msgq_watermarks_set;
};
#endif
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