util/oslib-win32.c

   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/sysemu.h"
  31 #include "qemu/main-loop.h"
  32 #include "trace.h"
  33 #include "qemu/sockets.h"
  34
  35 void *qemu_oom_check(void *ptr)
  36 {
  37     if (ptr == NULL) {
  38         fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
  39         abort();
  40     }
  41     return ptr;
  42 }
  43
  44 void *qemu_memalign(size_t alignment, size_t size)
  45 {
  46     void *ptr;
  47
  48     if (!size) {
  49         abort();
  50     }
  51     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
  52     trace_qemu_memalign(alignment, size, ptr);
  53     return ptr;
  54 }
  55
  56 void *qemu_vmalloc(size_t size)
  57 {
  58     void *ptr;
  59
  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();
  65     }
  66     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
  67     trace_qemu_vmalloc(size, ptr);
  68     return ptr;
  69 }
  70
  71 void qemu_vfree(void *ptr)
  72 {
  73     trace_qemu_vfree(ptr);
  74     if (ptr) {
  75         VirtualFree(ptr, 0, MEM_RELEASE);
  76     }
  77 }
  78
  79 /* FIXME: add proper locking */
  80 struct tm *gmtime_r(const time_t *timep, struct tm *result)
  81 {
  82     struct tm *p = gmtime(timep);
  83     memset(result, 0, sizeof(*result));
  84     if (p) {
  85         *result = *p;
  86         p = result;
  87     }
  88     return p;
  89 }
  90
  91 /* FIXME: add proper locking */
  92 struct tm *localtime_r(const time_t *timep, struct tm *result)
  93 {
  94     struct tm *p = localtime(timep);
  95     memset(result, 0, sizeof(*result));
  96     if (p) {
  97         *result = *p;
  98         p = result;
  99     }
 100     return p;
 101 }
 102
 103 void qemu_set_block(int fd)
 104 {
 105     unsigned long opt = 0;
 106     WSAEventSelect(fd, NULL, 0);
 107     ioctlsocket(fd, FIONBIO, &opt);
 108 }
 109
 110 void qemu_set_nonblock(int fd)
 111 {
 112     unsigned long opt = 1;
 113     ioctlsocket(fd, FIONBIO, &opt);
 114     qemu_fd_register(fd);
 115 }
 116
 117 int inet_aton(const char *cp, struct in_addr *ia)
 118 {
 119     uint32_t addr = inet_addr(cp);
 120     if (addr == 0xffffffff) {
 121         return 0;
 122     }
 123     ia->s_addr = addr;
 124     return 1;
 125 }
 126
 127 void qemu_set_cloexec(int fd)
 128 {
 129 }
 130
 131 /* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
 132 #define _W32_FT_OFFSET (116444736000000000ULL)
 133
 134 int qemu_gettimeofday(qemu_timeval *tp)
 135 {
 136   union {
 137     unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
 138     FILETIME ft;
 139   }  _now;
 140
 141   if(tp) {
 142       GetSystemTimeAsFileTime (&_now.ft);
 143       tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
 144       tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
 145   }
 146   /* Always return 0 as per Open Group Base Specifications Issue 6.
 147      Do not set errno on error.  */
 148   return 0;
 149 }
 150
 151 int qemu_get_thread_id(void)
 152 {
 153     return GetCurrentThreadId();
 154 }