Annotation of qemu/os-win32.c, revision 1.1.1.4

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:  * Permission is hereby granted, free of charge, to any person obtaining a copy
                      8:  * of this software and associated documentation files (the "Software"), to deal
                      9:  * in the Software without restriction, including without limitation the rights
                     10:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
                     11:  * copies of the Software, and to permit persons to whom the Software is
                     12:  * furnished to do so, subject to the following conditions:
                     13:  *
                     14:  * The above copyright notice and this permission notice shall be included in
                     15:  * all copies or substantial portions of the Software.
                     16:  *
                     17:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
                     18:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
                     19:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
                     20:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
                     21:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
                     22:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
                     23:  * THE SOFTWARE.
                     24:  */
                     25: #include <windows.h>
                     26: #include <unistd.h>
                     27: #include <fcntl.h>
                     28: #include <signal.h>
                     29: #include <time.h>
                     30: #include <errno.h>
                     31: #include <sys/time.h>
                     32: #include "config-host.h"
                     33: #include "sysemu.h"
                     34: #include "qemu-options.h"
                     35: 
                     36: /***********************************************************/
1.1.1.2   root       37: /* Functions missing in mingw */
                     38: 
                     39: int setenv(const char *name, const char *value, int overwrite)
                     40: {
                     41:     int result = 0;
                     42:     if (overwrite || !getenv(name)) {
                     43:         size_t length = strlen(name) + strlen(value) + 2;
1.1.1.4 ! root       44:         char *string = g_malloc(length);
1.1.1.2   root       45:         snprintf(string, length, "%s=%s", name, value);
                     46:         result = putenv(string);
                     47:     }
                     48:     return result;
                     49: }
                     50: 
1.1       root       51: static BOOL WINAPI qemu_ctrl_handler(DWORD type)
                     52: {
                     53:     exit(STATUS_CONTROL_C_EXIT);
                     54:     return TRUE;
                     55: }
                     56: 
                     57: void os_setup_early_signal_handling(void)
                     58: {
                     59:     /* Note: cpu_interrupt() is currently not SMP safe, so we force
                     60:        QEMU to run on a single CPU */
                     61:     HANDLE h;
1.1.1.3   root       62:     DWORD_PTR mask, smask;
1.1       root       63:     int i;
                     64: 
                     65:     SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
                     66: 
                     67:     h = GetCurrentProcess();
                     68:     if (GetProcessAffinityMask(h, &mask, &smask)) {
                     69:         for(i = 0; i < 32; i++) {
                     70:             if (mask & (1 << i))
                     71:                 break;
                     72:         }
                     73:         if (i != 32) {
                     74:             mask = 1 << i;
                     75:             SetProcessAffinityMask(h, mask);
                     76:         }
                     77:     }
                     78: }
                     79: 
                     80: /* Look for support files in the same directory as the executable.  */
                     81: char *os_find_datadir(const char *argv0)
                     82: {
                     83:     char *p;
                     84:     char buf[MAX_PATH];
                     85:     DWORD len;
                     86: 
                     87:     len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
                     88:     if (len == 0) {
                     89:         return NULL;
                     90:     }
                     91: 
                     92:     buf[len] = 0;
                     93:     p = buf + len - 1;
                     94:     while (p != buf && *p != '\\')
                     95:         p--;
                     96:     *p = 0;
                     97:     if (access(buf, R_OK) == 0) {
1.1.1.4 ! root       98:         return g_strdup(buf);
1.1       root       99:     }
                    100:     return NULL;
                    101: }
                    102: 
1.1.1.2   root      103: void os_set_line_buffering(void)
                    104: {
                    105:     setbuf(stdout, NULL);
                    106:     setbuf(stderr, NULL);
                    107: }
                    108: 
1.1       root      109: /*
                    110:  * Parse OS specific command line options.
                    111:  * return 0 if option handled, -1 otherwise
                    112:  */
                    113: void os_parse_cmd_args(int index, const char *optarg)
                    114: {
                    115:     return;
                    116: }
                    117: 
                    118: void os_pidfile_error(void)
                    119: {
                    120:     fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
                    121: }
1.1.1.2   root      122: 
                    123: int qemu_create_pidfile(const char *filename)
                    124: {
                    125:     char buffer[128];
                    126:     int len;
                    127:     HANDLE file;
                    128:     OVERLAPPED overlap;
                    129:     BOOL ret;
                    130:     memset(&overlap, 0, sizeof(overlap));
                    131: 
                    132:     file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1.1.1.4 ! root      133:                       OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1.1.1.2   root      134: 
                    135:     if (file == INVALID_HANDLE_VALUE) {
                    136:         return -1;
                    137:     }
1.1.1.4 ! root      138:     len = snprintf(buffer, sizeof(buffer), "%d\n", getpid());
        !           139:     ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len,
        !           140:                     NULL, &overlap);
        !           141:     CloseHandle(file);
1.1.1.2   root      142:     if (ret == 0) {
                    143:         return -1;
                    144:     }
                    145:     return 0;
                    146: }
1.1.1.3   root      147: 
                    148: int qemu_get_thread_id(void)
                    149: {
                    150:     return GetCurrentThreadId();
                    151: }

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