File: cffd.c

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (175 lines) | stat: -rw-r--r-- 3,783 bytes parent folder | download
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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
/*
 * Copyright (c) 2008-2011 Apple Inc. All rights reserved.
 *
 * @APPLE_APACHE_LICENSE_HEADER_START@
 *
 * 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.
 *
 * @APPLE_APACHE_LICENSE_HEADER_END@
 */

#include <dispatch/dispatch.h>

#include <stdio.h>
#include <stdlib.h>
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
#include <unistd.h>
#endif
#include <string.h>
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <sys/queue.h>
#include <sys/errno.h>
#include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>

#include <CoreFoundation/CoreFoundation.h>

#include <bsdtests.h>
#include "dispatch_test.h"

static int long kevent_data = 0;

#if 0
int debug = 0;

#define DEBUG(...) do { \
		if (debug) fprintf(stderr, __VA_ARGS__); \
	} while(0);
#endif

#define assert_errno(str, expr) do { \
	if (!(expr)) { \
		fprintf(stderr, "%s: %s\n", (str), strerror(errno)); \
		exit(1); \
	} } while(0);

int
init_kqueue(void)
{
	int kq;
	int res;
	struct kevent ke;
	static struct timespec t0;

	kq = kqueue();
	assert_errno("kqueue", kq >= 0);

	EV_SET(&ke, 1, EVFILT_TIMER, EV_ADD, NOTE_USECONDS, USEC_PER_SEC/10, 0);

	res = kevent(kq, &ke, 1, NULL, 0, &t0);
	assert_errno("kevent", res == 0);

	return kq;
}

int
read_kevent(int kq)
{
	int res;
	struct kevent ke;
	//static struct timespec t0;

	res = kevent(kq, NULL, 0, &ke, 1, NULL);
	assert_errno("kevent", res >= 0);

	kevent_data += ke.data;
	fprintf(stdout, "kevent.data = %ld\n", ke.data);

	return (res < 0);
}


static void
cffd_callback(CFFileDescriptorRef cffd,
	CFOptionFlags callBackTypes __attribute__((unused)),
	void *info __attribute__((unused)))
{
	int kq;

	kq = CFFileDescriptorGetNativeDescriptor(cffd);
	if (read_kevent(kq) == 0) {
		// ...
	}

	CFFileDescriptorEnableCallBacks(cffd, kCFFileDescriptorReadCallBack);
}

#if 0
void
timer()
{
	dispatch_source_t ds;
	ds = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, dispatch_get_main_queue());
	assert(ds);
	dispatch_source_set_timer(ds, dispatch_time(0, 1*NSEC_PER_SEC), NSEC_PER_SEC, 0);
	dispatch_source_set_event_handler(ds, ^{
		printf("ping\n");
	});
	dispatch_resume(ds);
}

void
hangup()
{
	dispatch_source_t ds;
	ds = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGHUP, 0, dispatch_get_main_queue());
	assert(ds);
	dispatch_source_set_event_handler(ds, ^{
		printf("hangup\n");
	});
	dispatch_resume(ds);
}
#endif

int
main(int argc __attribute__((unused)), char *argv[] __attribute__((unused)))
{
	int kq;
	CFFileDescriptorRef cffd;
	CFRunLoopSourceRef  rls;
	CFFileDescriptorContext ctx;

	dispatch_test_start("CFFileDescriptor");

#if 0
	signal(SIGHUP, SIG_IGN);
#endif

	kq = init_kqueue();

	memset(&ctx, 0, sizeof(CFFileDescriptorContext));
	cffd = CFFileDescriptorCreate(NULL, kq, 1, cffd_callback, &ctx);
	assert(cffd);

	rls = CFFileDescriptorCreateRunLoopSource(NULL, cffd, 0);
	assert(rls);
	CFRunLoopAddSource(CFRunLoopGetCurrent(), rls, kCFRunLoopDefaultMode);
	CFFileDescriptorEnableCallBacks(cffd, kCFFileDescriptorReadCallBack);

#if 0
	timer();
	hangup();
#endif

	CFRunLoopRunInMode(kCFRunLoopDefaultMode, 1.05, false);
	// Should fire at least 10 times ...
	test_long_greater_than_or_equal("kevent data", kevent_data, 10);

	test_stop();

	return 0;
}