accel: move qtest CpusAccel functions to a common location
[qemu.git] / include / sysemu / os-posix.h
1 /*
2 * posix specific declarations
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
26 #ifndef QEMU_OS_POSIX_H
27 #define QEMU_OS_POSIX_H
28
29 #include <sys/mman.h>
30 #include <sys/socket.h>
31 #include <netinet/in.h>
32 #include <netinet/tcp.h>
33 #include <arpa/inet.h>
34 #include <netdb.h>
35 #include <sys/un.h>
36
37 #ifdef CONFIG_SYSMACROS
38 #include <sys/sysmacros.h>
39 #endif
40
41 void os_set_line_buffering(void);
42 void os_set_proc_name(const char *s);
43 void os_setup_signal_handling(void);
44 void os_daemonize(void);
45 void os_setup_post(void);
46 int os_mlock(void);
47
48 #define closesocket(s) close(s)
49 #define ioctlsocket(s, r, v) ioctl(s, r, v)
50
51 typedef struct timeval qemu_timeval;
52 #define qemu_gettimeofday(tp) gettimeofday(tp, NULL)
53
54 bool is_daemonized(void);
55
56 /**
57 * qemu_alloc_stack:
58 * @sz: pointer to a size_t holding the requested usable stack size
59 *
60 * Allocate memory that can be used as a stack, for instance for
61 * coroutines. If the memory cannot be allocated, this function
62 * will abort (like g_malloc()). This function also inserts an
63 * additional guard page to catch a potential stack overflow.
64 * Note that the memory required for the guard page and alignment
65 * and minimal stack size restrictions will increase the value of sz.
66 *
67 * The allocated stack must be freed with qemu_free_stack().
68 *
69 * Returns: pointer to (the lowest address of) the stack memory.
70 */
71 void *qemu_alloc_stack(size_t *sz);
72
73 /**
74 * qemu_free_stack:
75 * @stack: stack to free
76 * @sz: size of stack in bytes
77 *
78 * Free a stack allocated via qemu_alloc_stack(). Note that sz must
79 * be exactly the adjusted stack size returned by qemu_alloc_stack.
80 */
81 void qemu_free_stack(void *stack, size_t sz);
82
83 /* POSIX and Mingw32 differ in the name of the stdio lock functions. */
84
85 static inline void qemu_flockfile(FILE *f)
86 {
87 flockfile(f);
88 }
89
90 static inline void qemu_funlockfile(FILE *f)
91 {
92 funlockfile(f);
93 }
94
95 #endif