xref: /illumos-kvm-cmd/oslib-win32.c (revision 68396ea9)
1 /*
2  * os-win32.c
3  *
4  * Copyright (c) 2003-2008 Fabrice Bellard
5  * Copyright (c) 2010 Red Hat, Inc.
6  *
7  * QEMU library functions for win32 which are shared between QEMU and
8  * the QEMU tools.
9  *
10  * Permission is hereby granted, free of charge, to any person obtaining a copy
11  * of this software and associated documentation files (the "Software"), to deal
12  * in the Software without restriction, including without limitation the rights
13  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14  * copies of the Software, and to permit persons to whom the Software is
15  * furnished to do so, subject to the following conditions:
16  *
17  * The above copyright notice and this permission notice shall be included in
18  * all copies or substantial portions of the Software.
19  *
20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26  * THE SOFTWARE.
27  */
28 #include <windows.h>
29 #include "config-host.h"
30 #include "sysemu.h"
31 #include "trace.h"
32 #include "qemu_socket.h"
33 
qemu_oom_check(void * ptr)34 void *qemu_oom_check(void *ptr)
35 {
36     if (ptr == NULL) {
37         fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
38         abort();
39     }
40     return ptr;
41 }
42 
qemu_memalign(size_t alignment,size_t size)43 void *qemu_memalign(size_t alignment, size_t size)
44 {
45     void *ptr;
46 
47     if (!size) {
48         abort();
49     }
50     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
51     trace_qemu_memalign(alignment, size, ptr);
52     return ptr;
53 }
54 
qemu_vmalloc(size_t size)55 void *qemu_vmalloc(size_t size)
56 {
57     void *ptr;
58 
59     /* FIXME: this is not exactly optimal solution since VirtualAlloc
60        has 64Kb granularity, but at least it guarantees us that the
61        memory is page aligned. */
62     if (!size) {
63         abort();
64     }
65     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
66     trace_qemu_vmalloc(size, ptr);
67     return ptr;
68 }
69 
qemu_vfree(void * ptr)70 void qemu_vfree(void *ptr)
71 {
72     trace_qemu_vfree(ptr);
73     VirtualFree(ptr, 0, MEM_RELEASE);
74 }
75 
socket_set_nonblock(int fd)76 void socket_set_nonblock(int fd)
77 {
78     unsigned long opt = 1;
79     ioctlsocket(fd, FIONBIO, &opt);
80 }
81 
inet_aton(const char * cp,struct in_addr * ia)82 int inet_aton(const char *cp, struct in_addr *ia)
83 {
84     uint32_t addr = inet_addr(cp);
85     if (addr == 0xffffffff) {
86 	return 0;
87     }
88     ia->s_addr = addr;
89     return 1;
90 }
91 
qemu_set_cloexec(int fd)92 void qemu_set_cloexec(int fd)
93 {
94 }
95 
96 /* mingw32 needs ffs for compilations without optimization. */
ffs(int i)97 int ffs(int i)
98 {
99     /* Use gcc's builtin ffs. */
100     return __builtin_ffs(i);
101 }
102 
103 /* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
104 #define _W32_FT_OFFSET (116444736000000000ULL)
105 
qemu_gettimeofday(qemu_timeval * tp)106 int qemu_gettimeofday(qemu_timeval *tp)
107 {
108   union {
109     unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
110     FILETIME ft;
111   }  _now;
112 
113   if(tp) {
114       GetSystemTimeAsFileTime (&_now.ft);
115       tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
116       tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
117   }
118   /* Always return 0 as per Open Group Base Specifications Issue 6.
119      Do not set errno on error.  */
120   return 0;
121 }
122