104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*
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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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*/
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#include <winsock2.h>
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#include <windows.h>
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#include <stdlib.h>
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#include "config-host.h"
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#include "sysemu/sysemu.h"
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/* this must come after including "trace.h" */
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/* The pragmas are to fix this issue: https://connect.microsoft.com/VisualStudio/feedback/details/976983 */
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#pragma warning(push)
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#pragma warning(disable : 4091)
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#include <shlobj.h>
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#pragma warning(pop)
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void *qemu_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_try_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 = 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_memalign(size_t alignment, size_t size)
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{
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return qemu_oom_check(qemu_try_memalign(alignment, size));
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}
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void *qemu_anon_ram_alloc(size_t size, uint64_t *align)
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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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ptr = VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
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// trace_qemu_anon_ram_alloc(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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if (ptr) {
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VirtualFree(ptr, 0, MEM_RELEASE);
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}
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}
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void qemu_anon_ram_free(void *ptr, size_t size)
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{
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// trace_qemu_anon_ram_free(ptr, size);
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if (ptr) {
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VirtualFree(ptr, 0, MEM_RELEASE);
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}
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}
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size_t getpagesize(void)
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{
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SYSTEM_INFO system_info;
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GetSystemInfo(&system_info);
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return system_info.dwPageSize;
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}
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