Merge branch 'upstream-merge'
[qemu-kvm.git] / oslib-win32.c
blob51b33e8b2017bd1f5db2105b590cc8e1058022b5
1 /*
2 * os-win32.c
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2010 Red Hat, Inc.
7 * QEMU library functions for win32 which are shared between QEMU and
8 * the QEMU tools.
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:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
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.
28 #include <windows.h>
29 #include "config-host.h"
30 #include "sysemu.h"
31 #include "main-loop.h"
32 #include "trace.h"
33 #include "qemu_socket.h"
35 void *qemu_oom_check(void *ptr)
37 if (ptr == NULL) {
38 fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
39 abort();
41 return ptr;
44 void *qemu_memalign(size_t alignment, size_t size)
46 void *ptr;
48 if (!size) {
49 abort();
51 ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
52 trace_qemu_memalign(alignment, size, ptr);
53 return ptr;
56 void *qemu_vmalloc(size_t size)
58 void *ptr;
60 /* FIXME: this is not exactly optimal solution since VirtualAlloc
61 has 64Kb granularity, but at least it guarantees us that the
62 memory is page aligned. */
63 if (!size) {
64 abort();
66 ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
67 trace_qemu_vmalloc(size, ptr);
68 return ptr;
71 void qemu_vfree(void *ptr)
73 trace_qemu_vfree(ptr);
74 VirtualFree(ptr, 0, MEM_RELEASE);
77 /* FIXME: add proper locking */
78 struct tm *gmtime_r(const time_t *timep, struct tm *result)
80 struct tm *p = gmtime(timep);
81 memset(result, 0, sizeof(*result));
82 if (p) {
83 *result = *p;
84 p = result;
86 return p;
89 /* FIXME: add proper locking */
90 struct tm *localtime_r(const time_t *timep, struct tm *result)
92 struct tm *p = localtime(timep);
93 memset(result, 0, sizeof(*result));
94 if (p) {
95 *result = *p;
96 p = result;
98 return p;
101 void socket_set_block(int fd)
103 unsigned long opt = 0;
104 WSAEventSelect(fd, NULL, 0);
105 ioctlsocket(fd, FIONBIO, &opt);
108 void socket_set_nonblock(int fd)
110 unsigned long opt = 1;
111 ioctlsocket(fd, FIONBIO, &opt);
112 qemu_fd_register(fd);
115 int inet_aton(const char *cp, struct in_addr *ia)
117 uint32_t addr = inet_addr(cp);
118 if (addr == 0xffffffff) {
119 return 0;
121 ia->s_addr = addr;
122 return 1;
125 void qemu_set_cloexec(int fd)
129 /* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
130 #define _W32_FT_OFFSET (116444736000000000ULL)
132 int qemu_gettimeofday(qemu_timeval *tp)
134 union {
135 unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
136 FILETIME ft;
137 } _now;
139 if(tp) {
140 GetSystemTimeAsFileTime (&_now.ft);
141 tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
142 tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
144 /* Always return 0 as per Open Group Base Specifications Issue 6.
145 Do not set errno on error. */
146 return 0;
149 int qemu_get_thread_id(void)
151 return GetCurrentThreadId();