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_anon_ram_alloc(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_anon_ram_alloc(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 void qemu_anon_ram_free(void *ptr, size_t size)
  80 {
  81     trace_qemu_anon_ram_free(ptr, size);
  82     if (ptr) {
  83         VirtualFree(ptr, 0, MEM_RELEASE);
  84     }
  85 }
  86
  87 /* FIXME: add proper locking */
  88 struct tm *gmtime_r(const time_t *timep, struct tm *result)
  89 {
  90     struct tm *p = gmtime(timep);
  91     memset(result, 0, sizeof(*result));
  92     if (p) {
  93         *result = *p;
  94         p = result;
  95     }
  96     return p;
  97 }
  98
  99 /* FIXME: add proper locking */
 100 struct tm *localtime_r(const time_t *timep, struct tm *result)
 101 {
 102     struct tm *p = localtime(timep);
 103     memset(result, 0, sizeof(*result));
 104     if (p) {
 105         *result = *p;
 106         p = result;
 107     }
 108     return p;
 109 }
 110
 111 void qemu_set_block(int fd)
 112 {
 113     unsigned long opt = 0;
 114     WSAEventSelect(fd, NULL, 0);
 115     ioctlsocket(fd, FIONBIO, &opt);
 116 }
 117
 118 void qemu_set_nonblock(int fd)
 119 {
 120     unsigned long opt = 1;
 121     ioctlsocket(fd, FIONBIO, &opt);
 122     qemu_fd_register(fd);
 123 }
 124
 125 int inet_aton(const char *cp, struct in_addr *ia)
 126 {
 127     uint32_t addr = inet_addr(cp);
 128     if (addr == 0xffffffff) {
 129         return 0;
 130     }
 131     ia->s_addr = addr;
 132     return 1;
 133 }
 134
 135 void qemu_set_cloexec(int fd)
 136 {
 137 }
 138
 139 /* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
 140 #define _W32_FT_OFFSET (116444736000000000ULL)
 141
 142 int qemu_gettimeofday(qemu_timeval *tp)
 143 {
 144   union {
 145     unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
 146     FILETIME ft;
 147   }  _now;
 148
 149   if(tp) {
 150       GetSystemTimeAsFileTime (&_now.ft);
 151       tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
 152       tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
 153   }
 154   /* Always return 0 as per Open Group Base Specifications Issue 6.
 155      Do not set errno on error.  */
 156   return 0;
 157 }
 158
 159 int qemu_get_thread_id(void)
 160 {
 161     return GetCurrentThreadId();
 162 }