Annotation of qemu/oslib-win32.c, revision 1.1.1.1

1.1       root        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 "trace.h"
                     32: #include "qemu_socket.h"
                     33: 
                     34: void *qemu_oom_check(void *ptr)
                     35: {
                     36:     if (ptr == NULL) {
                     37:         fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
                     38:         abort();
                     39:     }
                     40:     return ptr;
                     41: }
                     42: 
                     43: void *qemu_memalign(size_t alignment, size_t size)
                     44: {
                     45:     void *ptr;
                     46: 
                     47:     if (!size) {
                     48:         abort();
                     49:     }
                     50:     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
                     51:     trace_qemu_memalign(alignment, size, ptr);
                     52:     return ptr;
                     53: }
                     54: 
                     55: void *qemu_vmalloc(size_t size)
                     56: {
                     57:     void *ptr;
                     58: 
                     59:     /* FIXME: this is not exactly optimal solution since VirtualAlloc
                     60:        has 64Kb granularity, but at least it guarantees us that the
                     61:        memory is page aligned. */
                     62:     if (!size) {
                     63:         abort();
                     64:     }
                     65:     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
                     66:     trace_qemu_vmalloc(size, ptr);
                     67:     return ptr;
                     68: }
                     69: 
                     70: void qemu_vfree(void *ptr)
                     71: {
                     72:     trace_qemu_vfree(ptr);
                     73:     VirtualFree(ptr, 0, MEM_RELEASE);
                     74: }
                     75: 
                     76: void socket_set_nonblock(int fd)
                     77: {
                     78:     unsigned long opt = 1;
                     79:     ioctlsocket(fd, FIONBIO, &opt);
                     80: }
                     81: 
                     82: int inet_aton(const char *cp, struct in_addr *ia)
                     83: {
                     84:     uint32_t addr = inet_addr(cp);
                     85:     if (addr == 0xffffffff) {
                     86:        return 0;
                     87:     }
                     88:     ia->s_addr = addr;
                     89:     return 1;
                     90: }
                     91: 
                     92: void qemu_set_cloexec(int fd)
                     93: {
                     94: }
                     95: 
                     96: /* mingw32 needs ffs for compilations without optimization. */
                     97: int ffs(int i)
                     98: {
                     99:     /* Use gcc's builtin ffs. */
                    100:     return __builtin_ffs(i);
                    101: }
                    102: 
                    103: /* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
                    104: #define _W32_FT_OFFSET (116444736000000000ULL)
                    105: 
                    106: int qemu_gettimeofday(qemu_timeval *tp)
                    107: {
                    108:   union {
                    109:     unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
                    110:     FILETIME ft;
                    111:   }  _now;
                    112: 
                    113:   if(tp) {
                    114:       GetSystemTimeAsFileTime (&_now.ft);
                    115:       tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
                    116:       tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
                    117:   }
                    118:   /* Always return 0 as per Open Group Base Specifications Issue 6.
                    119:      Do not set errno on error.  */
                    120:   return 0;
                    121: }

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