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/*
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 * os-win32.c
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 *
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 * Copyright (c) 2003-2008 Fabrice Bellard
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 * Copyright (c) 2010 Red Hat, Inc.
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 *
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 * QEMU library functions for win32 which are shared between QEMU and
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 * the QEMU tools.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 */
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#include <windows.h>
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#include "config-host.h"
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#include "sysemu.h"
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#include "trace.h"
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#include "qemu_socket.h"
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static void *oom_check(void *ptr)
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{
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    if (ptr == NULL) {
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        fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
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        abort();
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    }
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    return ptr;
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}
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void *qemu_memalign(size_t alignment, size_t size)
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{
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    void *ptr;
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    if (!size) {
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        abort();
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    }
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    ptr = oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
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    trace_qemu_memalign(alignment, size, ptr);
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    return ptr;
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}
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void *qemu_vmalloc(size_t size)
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{
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    void *ptr;
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    /* FIXME: this is not exactly optimal solution since VirtualAlloc
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       has 64Kb granularity, but at least it guarantees us that the
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       memory is page aligned. */
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    if (!size) {
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        abort();
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    }
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    ptr = oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
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    trace_qemu_vmalloc(size, ptr);
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    return ptr;
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}
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void qemu_vfree(void *ptr)
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{
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    trace_qemu_vfree(ptr);
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    VirtualFree(ptr, 0, MEM_RELEASE);
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}
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void socket_set_nonblock(int fd)
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{
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    unsigned long opt = 1;
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    ioctlsocket(fd, FIONBIO, &opt);
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}
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int inet_aton(const char *cp, struct in_addr *ia)
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{
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    uint32_t addr = inet_addr(cp);
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    if (addr == 0xffffffff) {
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        return 0;
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    }
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    ia->s_addr = addr;
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    return 1;
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}
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void qemu_set_cloexec(int fd)
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{
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}
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/* mingw32 needs ffs for compilations without optimization. */
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int ffs(int i)
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{
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    /* Use gcc's builtin ffs. */
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    return __builtin_ffs(i);
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}
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/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
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#define _W32_FT_OFFSET (116444736000000000ULL)
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int qemu_gettimeofday(qemu_timeval *tp)
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{
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  union {
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    unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
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    FILETIME ft;
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  }  _now;
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  if(tp) {
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      GetSystemTimeAsFileTime (&_now.ft);
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      tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
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      tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
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  }
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  /* Always return 0 as per Open Group Base Specifications Issue 6.
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     Do not set errno on error.  */
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  return 0;
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}