Jes Sorensen | 1911350 | 2010-06-10 11:42:17 +0200 | [diff] [blame] | 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" |
Jes Sorensen | 59a5264 | 2010-06-10 11:42:25 +0200 | [diff] [blame^] | 34 | #include "qemu-options.h" |
Jes Sorensen | 1911350 | 2010-06-10 11:42:17 +0200 | [diff] [blame] | 35 | |
| 36 | /***********************************************************/ |
| 37 | /* Polling handling */ |
| 38 | |
| 39 | typedef struct PollingEntry { |
| 40 | PollingFunc *func; |
| 41 | void *opaque; |
| 42 | struct PollingEntry *next; |
| 43 | } PollingEntry; |
| 44 | |
| 45 | static PollingEntry *first_polling_entry; |
| 46 | |
| 47 | int qemu_add_polling_cb(PollingFunc *func, void *opaque) |
| 48 | { |
| 49 | PollingEntry **ppe, *pe; |
| 50 | pe = qemu_mallocz(sizeof(PollingEntry)); |
| 51 | pe->func = func; |
| 52 | pe->opaque = opaque; |
| 53 | for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next); |
| 54 | *ppe = pe; |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | void qemu_del_polling_cb(PollingFunc *func, void *opaque) |
| 59 | { |
| 60 | PollingEntry **ppe, *pe; |
| 61 | for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next) { |
| 62 | pe = *ppe; |
| 63 | if (pe->func == func && pe->opaque == opaque) { |
| 64 | *ppe = pe->next; |
| 65 | qemu_free(pe); |
| 66 | break; |
| 67 | } |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | /***********************************************************/ |
| 72 | /* Wait objects support */ |
| 73 | typedef struct WaitObjects { |
| 74 | int num; |
| 75 | HANDLE events[MAXIMUM_WAIT_OBJECTS + 1]; |
| 76 | WaitObjectFunc *func[MAXIMUM_WAIT_OBJECTS + 1]; |
| 77 | void *opaque[MAXIMUM_WAIT_OBJECTS + 1]; |
| 78 | } WaitObjects; |
| 79 | |
| 80 | static WaitObjects wait_objects = {0}; |
| 81 | |
| 82 | int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque) |
| 83 | { |
| 84 | WaitObjects *w = &wait_objects; |
| 85 | |
| 86 | if (w->num >= MAXIMUM_WAIT_OBJECTS) |
| 87 | return -1; |
| 88 | w->events[w->num] = handle; |
| 89 | w->func[w->num] = func; |
| 90 | w->opaque[w->num] = opaque; |
| 91 | w->num++; |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque) |
| 96 | { |
| 97 | int i, found; |
| 98 | WaitObjects *w = &wait_objects; |
| 99 | |
| 100 | found = 0; |
| 101 | for (i = 0; i < w->num; i++) { |
| 102 | if (w->events[i] == handle) |
| 103 | found = 1; |
| 104 | if (found) { |
| 105 | w->events[i] = w->events[i + 1]; |
| 106 | w->func[i] = w->func[i + 1]; |
| 107 | w->opaque[i] = w->opaque[i + 1]; |
| 108 | } |
| 109 | } |
| 110 | if (found) |
| 111 | w->num--; |
| 112 | } |
Jes Sorensen | 0d93ca7 | 2010-06-10 11:42:18 +0200 | [diff] [blame] | 113 | |
| 114 | void os_host_main_loop_wait(int *timeout) |
| 115 | { |
| 116 | int ret, ret2, i; |
| 117 | PollingEntry *pe; |
| 118 | |
| 119 | /* XXX: need to suppress polling by better using win32 events */ |
| 120 | ret = 0; |
| 121 | for(pe = first_polling_entry; pe != NULL; pe = pe->next) { |
| 122 | ret |= pe->func(pe->opaque); |
| 123 | } |
| 124 | if (ret == 0) { |
| 125 | int err; |
| 126 | WaitObjects *w = &wait_objects; |
| 127 | |
| 128 | ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout); |
| 129 | if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) { |
| 130 | if (w->func[ret - WAIT_OBJECT_0]) |
| 131 | w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]); |
| 132 | |
| 133 | /* Check for additional signaled events */ |
| 134 | for(i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) { |
| 135 | |
| 136 | /* Check if event is signaled */ |
| 137 | ret2 = WaitForSingleObject(w->events[i], 0); |
| 138 | if(ret2 == WAIT_OBJECT_0) { |
| 139 | if (w->func[i]) |
| 140 | w->func[i](w->opaque[i]); |
| 141 | } else if (ret2 == WAIT_TIMEOUT) { |
| 142 | } else { |
| 143 | err = GetLastError(); |
| 144 | fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err); |
| 145 | } |
| 146 | } |
| 147 | } else if (ret == WAIT_TIMEOUT) { |
| 148 | } else { |
| 149 | err = GetLastError(); |
| 150 | fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | *timeout = 0; |
| 155 | } |
Jes Sorensen | 69bd73b | 2010-06-10 11:42:20 +0200 | [diff] [blame] | 156 | |
| 157 | static BOOL WINAPI qemu_ctrl_handler(DWORD type) |
| 158 | { |
| 159 | exit(STATUS_CONTROL_C_EXIT); |
| 160 | return TRUE; |
| 161 | } |
| 162 | |
Jes Sorensen | fe98ac1 | 2010-06-10 11:42:21 +0200 | [diff] [blame] | 163 | void os_setup_early_signal_handling(void) |
Jes Sorensen | 69bd73b | 2010-06-10 11:42:20 +0200 | [diff] [blame] | 164 | { |
| 165 | /* Note: cpu_interrupt() is currently not SMP safe, so we force |
| 166 | QEMU to run on a single CPU */ |
| 167 | HANDLE h; |
| 168 | DWORD mask, smask; |
| 169 | int i; |
| 170 | |
| 171 | SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE); |
| 172 | |
| 173 | h = GetCurrentProcess(); |
| 174 | if (GetProcessAffinityMask(h, &mask, &smask)) { |
| 175 | for(i = 0; i < 32; i++) { |
| 176 | if (mask & (1 << i)) |
| 177 | break; |
| 178 | } |
| 179 | if (i != 32) { |
| 180 | mask = 1 << i; |
| 181 | SetProcessAffinityMask(h, mask); |
| 182 | } |
| 183 | } |
| 184 | } |
Jes Sorensen | 6170540 | 2010-06-10 11:42:23 +0200 | [diff] [blame] | 185 | |
| 186 | /* Look for support files in the same directory as the executable. */ |
| 187 | char *os_find_datadir(const char *argv0) |
| 188 | { |
| 189 | char *p; |
| 190 | char buf[MAX_PATH]; |
| 191 | DWORD len; |
| 192 | |
| 193 | len = GetModuleFileName(NULL, buf, sizeof(buf) - 1); |
| 194 | if (len == 0) { |
| 195 | return NULL; |
| 196 | } |
| 197 | |
| 198 | buf[len] = 0; |
| 199 | p = buf + len - 1; |
| 200 | while (p != buf && *p != '\\') |
| 201 | p--; |
| 202 | *p = 0; |
| 203 | if (access(buf, R_OK) == 0) { |
| 204 | return qemu_strdup(buf); |
| 205 | } |
| 206 | return NULL; |
| 207 | } |
Jes Sorensen | 59a5264 | 2010-06-10 11:42:25 +0200 | [diff] [blame^] | 208 | |
| 209 | /* |
| 210 | * Parse OS specific command line options. |
| 211 | * return 0 if option handled, -1 otherwise |
| 212 | */ |
| 213 | void os_parse_cmd_args(int index, const char *optarg) |
| 214 | { |
| 215 | return; |
| 216 | } |