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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2022. 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 "erl_nif.h"
#include <errno.h>
#include <assert.h>
#ifdef __WIN32__
#include <windows.h>
#else
#include <unistd.h>
#endif
#include <stdio.h>
#include <string.h>
static int fn_write_ok(char *filename)
{
FILE *file = fopen(filename, "w");
if (!file)
return EINVAL;
if (1 != fwrite("ok", 2, 1, file))
return EINVAL;
fclose(file);
return 0;
}
static void on_halt(void *priv_data)
{
int res;
#ifdef __WIN32__
Sleep(1000);
#else
sleep(1);
#endif
assert(priv_data);
res = fn_write_ok((char *) priv_data);
assert(res == 0);
}
static void unload(ErlNifEnv *env, void *priv_data)
{
if (priv_data)
enif_free(priv_data);
}
static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
{
unsigned filename_len;
char *filename;
if (0 != enif_set_option(env, ERL_NIF_OPT_ON_HALT, on_halt))
return __LINE__;
if (!enif_get_list_length(env, load_info, &filename_len))
return __LINE__;
if (filename_len == 0)
return __LINE__;
filename_len++;
filename = enif_alloc(filename_len);
if (!filename)
return __LINE__;
if (filename_len != enif_get_string(env,
load_info,
filename,
filename_len,
ERL_NIF_LATIN1)) {
enif_free(filename);
return __LINE__;
}
*priv_data = (void *) filename;
return 0;
}
static ERL_NIF_TERM lib_loaded(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
return enif_make_atom(env, "true");
}
static ErlNifFunc nif_funcs[] =
{
{"lib_loaded", 0, lib_loaded}
};
|
