/* * 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 <glib.h> #include <stdlib.h> #include "config-host.h" #include "sysemu/sysemu.h" #include "qemu/main-loop.h" #include "trace.h" #include "qemu/sockets.h" /* this must come after including "trace.h" */ #include <shlobj.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_anon_ram_alloc(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_anon_ram_alloc(size, ptr); return ptr; } void qemu_vfree(void *ptr) { trace_qemu_vfree(ptr); if (ptr) { VirtualFree(ptr, 0, MEM_RELEASE); } } void qemu_anon_ram_free(void *ptr, size_t size) { trace_qemu_anon_ram_free(ptr, size); if (ptr) { VirtualFree(ptr, 0, MEM_RELEASE); } } /* FIXME: add proper locking */ struct tm *gmtime_r(const time_t *timep, struct tm *result) { struct tm *p = gmtime(timep); memset(result, 0, sizeof(*result)); if (p) { *result = *p; p = result; } return p; } /* FIXME: add proper locking */ struct tm *localtime_r(const time_t *timep, struct tm *result) { struct tm *p = localtime(timep); memset(result, 0, sizeof(*result)); if (p) { *result = *p; p = result; } return p; } void qemu_set_block(int fd) { unsigned long opt = 0; WSAEventSelect(fd, NULL, 0); ioctlsocket(fd, FIONBIO, &opt); } void qemu_set_nonblock(int fd) { unsigned long opt = 1; ioctlsocket(fd, FIONBIO, &opt); qemu_fd_register(fd); } 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) { } /* 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; } int qemu_get_thread_id(void) { return GetCurrentThreadId(); } char * qemu_get_local_state_pathname(const char *relative_pathname) { HRESULT result; char base_path[MAX_PATH+1] = ""; result = SHGetFolderPath(NULL, CSIDL_COMMON_APPDATA, NULL, /* SHGFP_TYPE_CURRENT */ 0, base_path); if (result != S_OK) { /* misconfigured environment */ g_critical("CSIDL_COMMON_APPDATA unavailable: %ld", (long)result); abort(); } return g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", base_path, relative_pathname); }