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.h"
  31 #include "main-loop.h"
  32 #include "trace.h"
  33 #include "qemu_socket.h"
  34
  35 static void default_qemu_fd_register(int fd)
  36 {
  37 }
  38 QEMU_WEAK_ALIAS(qemu_fd_register, default_qemu_fd_register);
  39 #define qemu_fd_register \
  40     QEMU_WEAK_REF(qemu_fd_register, default_qemu_fd_register)
  41
  42 void *qemu_oom_check(void *ptr)
  43 {
  44     if (ptr == NULL) {
  45         fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
  46         abort();
  47     }
  48     return ptr;
  49 }
  50
  51 void *qemu_memalign(size_t alignment, size_t size)
  52 {
  53     void *ptr;
  54
  55     if (!size) {
  56         abort();
  57     }
  58     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
  59     trace_qemu_memalign(alignment, size, ptr);
  60     return ptr;
  61 }
  62
  63 void *qemu_vmalloc(size_t size)
  64 {
  65     void *ptr;
  66
  67     /* FIXME: this is not exactly optimal solution since VirtualAlloc
  68        has 64Kb granularity, but at least it guarantees us that the
  69        memory is page aligned. */
  70     if (!size) {
  71         abort();
  72     }
  73     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
  74     trace_qemu_vmalloc(size, ptr);
  75     return ptr;
  76 }
  77
  78 void qemu_vfree(void *ptr)
  79 {
  80     trace_qemu_vfree(ptr);
  81     VirtualFree(ptr, 0, MEM_RELEASE);
  82 }
  83
  84 /* FIXME: add proper locking */
  85 struct tm *gmtime_r(const time_t *timep, struct tm *result)
  86 {
  87     struct tm *p = gmtime(timep);
  88     memset(result, 0, sizeof(*result));
  89     if (p) {
  90         *result = *p;
  91         p = result;
  92     }
  93     return p;
  94 }
  95
  96 /* FIXME: add proper locking */
  97 struct tm *localtime_r(const time_t *timep, struct tm *result)
  98 {
  99     struct tm *p = localtime(timep);
 100     memset(result, 0, sizeof(*result));
 101     if (p) {
 102         *result = *p;
 103         p = result;
 104     }
 105     return p;
 106 }
 107
 108 void socket_set_block(int fd)
 109 {
 110     unsigned long opt = 0;
 111     WSAEventSelect(fd, NULL, 0);
 112     ioctlsocket(fd, FIONBIO, &opt);
 113 }
 114
 115 void socket_set_nonblock(int fd)
 116 {
 117     unsigned long opt = 1;
 118     ioctlsocket(fd, FIONBIO, &opt);
 119     qemu_fd_register(fd);
 120 }
 121
 122 int inet_aton(const char *cp, struct in_addr *ia)
 123 {
 124     uint32_t addr = inet_addr(cp);
 125     if (addr == 0xffffffff) {
 126         return 0;
 127     }
 128     ia->s_addr = addr;
 129     return 1;
 130 }
 131
 132 void qemu_set_cloexec(int fd)
 133 {
 134 }
 135
 136 /* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
 137 #define _W32_FT_OFFSET (116444736000000000ULL)
 138
 139 int qemu_gettimeofday(qemu_timeval *tp)
 140 {
 141   union {
 142     unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
 143     FILETIME ft;
 144   }  _now;
 145
 146   if(tp) {
 147       GetSystemTimeAsFileTime (&_now.ft);
 148       tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
 149       tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
 150   }
 151   /* Always return 0 as per Open Group Base Specifications Issue 6.
 152      Do not set errno on error.  */
 153   return 0;
 154 }
 155
 156 int qemu_get_thread_id(void)
 157 {
 158     return GetCurrentThreadId();
 159 }