The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | /* Copyright (C) 2007-2008 The Android Open Source Project |
| 2 | ** |
| 3 | ** This software is licensed under the terms of the GNU General Public |
| 4 | ** License version 2, as published by the Free Software Foundation, and |
| 5 | ** may be copied, distributed, and modified under those terms. |
| 6 | ** |
| 7 | ** This program is distributed in the hope that it will be useful, |
| 8 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | ** GNU General Public License for more details. |
| 11 | */ |
David 'Digit' Turner | cc330d4 | 2013-12-14 23:26:42 +0100 | [diff] [blame] | 12 | #include "android/sockets.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 13 | #include "sysdeps.h" |
David 'Digit' Turner | a7fb77d | 2010-05-10 23:50:54 -0700 | [diff] [blame] | 14 | #include "qemu-common.h" |
David 'Digit' Turner | 7a78db7 | 2013-12-14 11:46:01 +0100 | [diff] [blame] | 15 | #include "qemu/timer.h" |
David 'Digit' Turner | e7216d8 | 2013-12-15 00:51:13 +0100 | [diff] [blame] | 16 | #include "sysemu/char.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 17 | #ifdef _WIN32 |
| 18 | #include <winsock2.h> |
| 19 | #else |
| 20 | #include <sys/socket.h> |
| 21 | #include <sys/select.h> |
| 22 | #include <sys/types.h> |
| 23 | #include <netinet/in.h> |
| 24 | #include <netinet/tcp.h> |
| 25 | #include <netdb.h> |
| 26 | #endif |
| 27 | |
David 'Digit' Turner | 3e7a928 | 2009-05-14 11:25:52 +0200 | [diff] [blame] | 28 | #define DEBUG 0 |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 29 | |
| 30 | #define D_ACTIVE DEBUG |
| 31 | |
| 32 | #if DEBUG |
| 33 | #define D(...) do { if (D_ACTIVE) fprintf(stderr, __VA_ARGS__); } while (0) |
| 34 | #else |
| 35 | #define D(...) ((void)0) |
| 36 | #endif |
| 37 | |
| 38 | /** TIME |
| 39 | **/ |
| 40 | |
| 41 | SysTime |
| 42 | sys_time_ms( void ) |
| 43 | { |
David 'Digit' Turner | dcda949 | 2014-02-16 15:13:55 +0100 | [diff] [blame] | 44 | return qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | /** TIMERS |
| 48 | **/ |
| 49 | |
| 50 | typedef struct SysTimerRec_ { |
| 51 | QEMUTimer* timer; |
| 52 | QEMUTimerCB* callback; |
| 53 | void* opaque; |
| 54 | SysTimer next; |
| 55 | } SysTimerRec; |
| 56 | |
| 57 | #define MAX_TIMERS 32 |
| 58 | |
| 59 | static SysTimerRec _s_timers0[ MAX_TIMERS ]; |
| 60 | static SysTimer _s_free_timers; |
| 61 | |
| 62 | static void |
| 63 | sys_init_timers( void ) |
| 64 | { |
| 65 | int nn; |
| 66 | for (nn = 0; nn < MAX_TIMERS-1; nn++) |
| 67 | _s_timers0[nn].next = _s_timers0 + (nn+1); |
| 68 | |
| 69 | _s_free_timers = _s_timers0; |
| 70 | } |
| 71 | |
| 72 | static SysTimer |
| 73 | sys_timer_alloc( void ) |
| 74 | { |
| 75 | SysTimer timer = _s_free_timers; |
| 76 | |
| 77 | if (timer != NULL) { |
| 78 | _s_free_timers = timer->next; |
| 79 | timer->next = NULL; |
| 80 | timer->timer = NULL; |
| 81 | } |
| 82 | return timer; |
| 83 | } |
| 84 | |
| 85 | |
| 86 | static void |
| 87 | sys_timer_free( SysTimer timer ) |
| 88 | { |
| 89 | if (timer->timer) { |
David 'Digit' Turner | dcda949 | 2014-02-16 15:13:55 +0100 | [diff] [blame] | 90 | timer_del( timer->timer ); |
| 91 | timer_free( timer->timer ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 92 | timer->timer = NULL; |
| 93 | } |
| 94 | timer->next = _s_free_timers; |
| 95 | _s_free_timers = timer; |
| 96 | } |
| 97 | |
| 98 | |
| 99 | SysTimer sys_timer_create( void ) |
| 100 | { |
| 101 | SysTimer timer = sys_timer_alloc(); |
| 102 | return timer; |
| 103 | } |
| 104 | |
| 105 | void |
| 106 | sys_timer_set( SysTimer timer, SysTime when, SysCallback _callback, void* opaque ) |
| 107 | { |
| 108 | QEMUTimerCB* callback = (QEMUTimerCB*)_callback; |
| 109 | |
| 110 | if (callback == NULL) { /* unsetting the timer */ |
| 111 | if (timer->timer) { |
David 'Digit' Turner | dcda949 | 2014-02-16 15:13:55 +0100 | [diff] [blame] | 112 | timer_del( timer->timer ); |
| 113 | timer_free( timer->timer ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 114 | timer->timer = NULL; |
| 115 | } |
| 116 | timer->callback = callback; |
| 117 | timer->opaque = NULL; |
| 118 | return; |
| 119 | } |
| 120 | |
| 121 | if ( timer->timer ) { |
| 122 | if ( timer->callback == callback && timer->opaque == opaque ) |
| 123 | goto ReuseTimer; |
| 124 | |
| 125 | /* need to replace the timer */ |
David 'Digit' Turner | dcda949 | 2014-02-16 15:13:55 +0100 | [diff] [blame] | 126 | timer_free( timer->timer ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 127 | } |
| 128 | |
David 'Digit' Turner | dcda949 | 2014-02-16 15:13:55 +0100 | [diff] [blame] | 129 | timer->timer = timer_new(QEMU_CLOCK_REALTIME, SCALE_MS, callback, opaque ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 130 | timer->callback = callback; |
| 131 | timer->opaque = opaque; |
| 132 | |
| 133 | ReuseTimer: |
David 'Digit' Turner | dcda949 | 2014-02-16 15:13:55 +0100 | [diff] [blame] | 134 | timer_mod( timer->timer, when ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | void |
| 138 | sys_timer_unset( SysTimer timer ) |
| 139 | { |
| 140 | if (timer->timer) { |
David 'Digit' Turner | dcda949 | 2014-02-16 15:13:55 +0100 | [diff] [blame] | 141 | timer_del( timer->timer ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 142 | } |
| 143 | } |
| 144 | |
| 145 | void |
| 146 | sys_timer_destroy( SysTimer timer ) |
| 147 | { |
| 148 | sys_timer_free( timer ); |
| 149 | } |
| 150 | |
| 151 | |
| 152 | /** CHANNELS |
| 153 | **/ |
| 154 | |
| 155 | typedef struct SysChannelRec_ { |
| 156 | int fd; |
| 157 | SysChannelCallback callback; |
| 158 | void* opaque; |
| 159 | SysChannel next; |
| 160 | } SysChannelRec; |
| 161 | |
| 162 | #define MAX_CHANNELS 16 |
| 163 | |
| 164 | static SysChannelRec _s_channels0[ MAX_CHANNELS ]; |
| 165 | static SysChannel _s_free_channels; |
| 166 | |
| 167 | static void |
| 168 | sys_init_channels( void ) |
| 169 | { |
| 170 | int nn; |
| 171 | |
| 172 | for ( nn = 0; nn < MAX_CHANNELS-1; nn++ ) { |
| 173 | _s_channels0[nn].next = _s_channels0 + (nn+1); |
| 174 | } |
| 175 | _s_free_channels = _s_channels0; |
| 176 | } |
| 177 | |
| 178 | static SysChannel |
| 179 | sys_channel_alloc( ) |
| 180 | { |
| 181 | SysChannel channel = _s_free_channels; |
| 182 | if (channel != NULL) { |
| 183 | _s_free_channels = channel->next; |
| 184 | channel->next = NULL; |
| 185 | channel->fd = -1; |
| 186 | channel->callback = NULL; |
| 187 | channel->opaque = NULL; |
| 188 | } |
| 189 | return channel; |
| 190 | } |
| 191 | |
| 192 | static void |
| 193 | sys_channel_free( SysChannel channel ) |
| 194 | { |
| 195 | if (channel->fd >= 0) { |
| 196 | socket_close( channel->fd ); |
| 197 | channel->fd = -1; |
| 198 | } |
| 199 | channel->next = _s_free_channels; |
| 200 | _s_free_channels = channel; |
| 201 | } |
| 202 | |
| 203 | |
| 204 | static void |
| 205 | sys_channel_read_handler( void* _channel ) |
| 206 | { |
| 207 | SysChannel channel = _channel; |
| 208 | D( "%s: read event for channel %p:%d\n", __FUNCTION__, |
| 209 | channel, channel->fd ); |
| 210 | channel->callback( channel->opaque, SYS_EVENT_READ ); |
| 211 | } |
| 212 | |
| 213 | static void |
| 214 | sys_channel_write_handler( void* _channel ) |
| 215 | { |
| 216 | SysChannel channel = _channel; |
| 217 | D( "%s: write event for channel %p:%d\n", __FUNCTION__, channel, channel->fd ); |
| 218 | channel->callback( channel->opaque, SYS_EVENT_WRITE ); |
| 219 | } |
| 220 | |
| 221 | void |
| 222 | sys_channel_on( SysChannel channel, |
| 223 | int events, |
| 224 | SysChannelCallback event_callback, |
| 225 | void* event_opaque ) |
| 226 | { |
| 227 | IOHandler* read_handler = NULL; |
| 228 | IOHandler* write_handler = NULL; |
| 229 | |
| 230 | if (events & SYS_EVENT_READ) { |
| 231 | read_handler = sys_channel_read_handler; |
| 232 | } |
| 233 | if (events & SYS_EVENT_WRITE) { |
| 234 | write_handler = sys_channel_write_handler; |
| 235 | } |
| 236 | channel->callback = event_callback; |
| 237 | channel->opaque = event_opaque; |
| 238 | qemu_set_fd_handler( channel->fd, read_handler, write_handler, channel ); |
| 239 | } |
| 240 | |
| 241 | int |
| 242 | sys_channel_read( SysChannel channel, void* buffer, int size ) |
| 243 | { |
| 244 | int len = size; |
| 245 | char* buf = (char*) buffer; |
| 246 | |
| 247 | while (len > 0) { |
| 248 | int ret = socket_recv(channel->fd, buf, len); |
| 249 | if (ret < 0) { |
| 250 | if (errno == EINTR) |
| 251 | continue; |
David 'Digit' Turner | ce0f4b0 | 2010-03-25 11:11:29 -0700 | [diff] [blame] | 252 | if (errno == EWOULDBLOCK || errno == EAGAIN) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 253 | break; |
| 254 | D( "%s: after reading %d bytes, recv() returned error %d: %s\n", |
| 255 | __FUNCTION__, size - len, errno, errno_str); |
| 256 | return -1; |
| 257 | } else if (ret == 0) { |
| 258 | break; |
| 259 | } else { |
| 260 | buf += ret; |
| 261 | len -= ret; |
| 262 | } |
| 263 | } |
| 264 | return size - len; |
| 265 | } |
| 266 | |
| 267 | |
| 268 | int |
| 269 | sys_channel_write( SysChannel channel, const void* buffer, int size ) |
| 270 | { |
| 271 | int len = size; |
| 272 | const char* buf = (const char*) buffer; |
| 273 | |
| 274 | while (len > 0) { |
| 275 | int ret = socket_send(channel->fd, buf, len); |
| 276 | if (ret < 0) { |
| 277 | if (errno == EINTR) |
| 278 | continue; |
David 'Digit' Turner | ce0f4b0 | 2010-03-25 11:11:29 -0700 | [diff] [blame] | 279 | if (errno == EWOULDBLOCK || errno == EAGAIN) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 280 | break; |
| 281 | D( "%s: send() returned error %d: %s\n", |
| 282 | __FUNCTION__, errno, errno_str); |
| 283 | return -1; |
| 284 | } else if (ret == 0) { |
| 285 | break; |
| 286 | } else { |
| 287 | buf += ret; |
| 288 | len -= ret; |
| 289 | } |
| 290 | } |
| 291 | return size - len; |
| 292 | } |
| 293 | |
| 294 | void sys_channel_close( SysChannel channel ) |
| 295 | { |
| 296 | qemu_set_fd_handler( channel->fd, NULL, NULL, NULL ); |
| 297 | sys_channel_free( channel ); |
| 298 | } |
| 299 | |
| 300 | void sys_main_init( void ) |
| 301 | { |
| 302 | sys_init_channels(); |
| 303 | sys_init_timers(); |
| 304 | } |
| 305 | |
| 306 | |
| 307 | int sys_main_loop( void ) |
| 308 | { |
| 309 | /* no looping, qemu has its own event loop */ |
| 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | |
| 314 | |
| 315 | |
| 316 | SysChannel |
| 317 | sys_channel_create_tcp_server( int port ) |
| 318 | { |
| 319 | SysChannel channel = sys_channel_alloc(); |
| 320 | |
| 321 | channel->fd = socket_anyaddr_server( port, SOCKET_STREAM ); |
| 322 | if (channel->fd < 0) { |
David 'Digit' Turner | 5973c77 | 2011-05-10 07:06:00 +0200 | [diff] [blame] | 323 | D( "%s: failed to created network socket on TCP:%d\n", |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 324 | __FUNCTION__, port ); |
| 325 | sys_channel_free( channel ); |
| 326 | return NULL; |
| 327 | } |
| 328 | |
| 329 | D( "%s: server channel %p:%d now listening on port %d\n", |
| 330 | __FUNCTION__, channel, channel->fd, port ); |
| 331 | |
| 332 | return channel; |
| 333 | } |
| 334 | |
| 335 | |
| 336 | SysChannel |
| 337 | sys_channel_create_tcp_handler( SysChannel server_channel ) |
| 338 | { |
| 339 | SysChannel channel = sys_channel_alloc(); |
| 340 | |
| 341 | D( "%s: creating handler from server channel %p:%d\n", __FUNCTION__, |
| 342 | server_channel, server_channel->fd ); |
| 343 | |
| 344 | channel->fd = socket_accept_any( server_channel->fd ); |
| 345 | if (channel->fd < 0) { |
| 346 | perror( "accept" ); |
| 347 | sys_channel_free( channel ); |
| 348 | return NULL; |
| 349 | } |
| 350 | |
| 351 | /* disable Nagle algorithm */ |
| 352 | socket_set_nodelay( channel->fd ); |
| 353 | |
| 354 | D( "%s: handler %p:%d created from server %p:%d\n", __FUNCTION__, |
| 355 | server_channel, server_channel->fd, channel, channel->fd ); |
| 356 | |
| 357 | return channel; |
| 358 | } |
| 359 | |
| 360 | |
| 361 | SysChannel |
| 362 | sys_channel_create_tcp_client( const char* hostname, int port ) |
| 363 | { |
| 364 | SysChannel channel = sys_channel_alloc(); |
| 365 | |
| 366 | channel->fd = socket_network_client( hostname, port, SOCKET_STREAM ); |
| 367 | if (channel->fd < 0) { |
| 368 | sys_channel_free(channel); |
| 369 | return NULL; |
| 370 | }; |
| 371 | |
| 372 | /* set to non-blocking and disable Nagle algorithm */ |
| 373 | socket_set_nonblock( channel->fd ); |
| 374 | socket_set_nodelay( channel->fd ); |
| 375 | |
| 376 | return channel; |
| 377 | } |
| 378 | |