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/*
* os-win32.c
*
* Copyright (c) 2003-2008 Fabrice Bellard
* Copyright (c) 2010 Red Hat, Inc.
*
* QEMU library functions for win32 which are shared between QEMU and
* the QEMU tools.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <windows.h>
#include "config-host.h"
#include "sysemu.h"
#include "trace.h"
#include "qemu_socket.h"

void *qemu_oom_check(void *ptr)
{
    if (ptr == NULL) {
        fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
        abort();
    }
    return ptr;
}

void *qemu_memalign(size_t alignment, size_t size)
{
    void *ptr;

    if (!size) {
        abort();
    }
    ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
    trace_qemu_memalign(alignment, size, ptr);
    return ptr;
}

void *qemu_vmalloc(size_t size)
{
    void *ptr;

    /* FIXME: this is not exactly optimal solution since VirtualAlloc
has 64Kb granularity, but at least it guarantees us that the
memory is page aligned. */
    if (!size) {
        abort();
    }
    ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
    trace_qemu_vmalloc(size, ptr);
    return ptr;
}

void qemu_vfree(void *ptr)
{
    trace_qemu_vfree(ptr);
    VirtualFree(ptr, 0, MEM_RELEASE);
}

void socket_set_nonblock(int fd)
{
    unsigned long opt = 1;
    ioctlsocket(fd, FIONBIO, &opt);
}

int inet_aton(const char *cp, struct in_addr *ia)
{
    uint32_t addr = inet_addr(cp);
    if (addr == 0xffffffff) {
return 0;
    }
    ia->s_addr = addr;
    return 1;
}

void qemu_set_cloexec(int fd)
{
}

/* mingw32 needs ffs for compilations without optimization. */
int ffs(int i)
{
    /* Use gcc's builtin ffs. */
    return __builtin_ffs(i);
}

/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
#define _W32_FT_OFFSET (116444736000000000ULL)

int qemu_gettimeofday(qemu_timeval *tp)
{
  union {
    unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
    FILETIME ft;
  } _now;

  if(tp) {
      GetSystemTimeAsFileTime (&_now.ft);
      tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
      tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
  }
  /* Always return 0 as per Open Group Base Specifications Issue 6.
Do not set errno on error. */
  return 0;
}
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