dlls/mshtml/task.c

   1 /*
   2  * Copyright 2006 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20
  21 #include <stdarg.h>
  22 #include <stdio.h>
  23 #include <assert.h>
  24
  25 #define COBJMACROS
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winuser.h"
  30 #include "ole2.h"
  31
  32 #include "wine/debug.h"
  33
  34 #include "mshtml_private.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  37
  38 #define WM_PROCESSTASK 0x8008
  39 #define TIMER_ID 0x3000
  40
  41 typedef struct {
  42     HTMLInnerWindow *window;
  43     DWORD id;
  44     DWORD time;
  45     DWORD interval;
  46     IDispatch *disp;
  47
  48     struct list entry;
  49 } task_timer_t;
  50
  51 static void default_task_destr(task_t *task)
  52 {
  53     heap_free(task);
  54 }
  55
  56 HRESULT push_task(task_t *task, task_proc_t proc, task_proc_t destr, LONG magic)
  57 {
  58     thread_data_t *thread_data;
  59
  60     thread_data = get_thread_data(TRUE);
  61     if(!thread_data) {
  62         if(destr)
  63             destr(task);
  64         else
  65             heap_free(task);
  66         return E_OUTOFMEMORY;
  67     }
  68
  69     task->target_magic = magic;
  70     task->proc = proc;
  71     task->destr = destr ? destr : default_task_destr;
  72
  73     list_add_tail(&thread_data->task_list, &task->entry);
  74
  75     PostMessageW(thread_data->thread_hwnd, WM_PROCESSTASK, 0, 0);
  76     return S_OK;
  77 }
  78
  79 static task_t *pop_task(void)
  80 {
  81     thread_data_t *thread_data;
  82     task_t *task;
  83
  84     thread_data = get_thread_data(FALSE);
  85     if(!thread_data)
  86         return NULL;
  87
  88     if(list_empty(&thread_data->task_list))
  89         return NULL;
  90
  91     task = LIST_ENTRY(thread_data->task_list.next, task_t, entry);
  92     list_remove(&task->entry);
  93     return task;
  94 }
  95
  96 static void release_task_timer(HWND thread_hwnd, task_timer_t *timer)
  97 {
  98     list_remove(&timer->entry);
  99
 100     IDispatch_Release(timer->disp);
 101
 102     heap_free(timer);
 103 }
 104
 105 void remove_target_tasks(LONG target)
 106 {
 107     thread_data_t *thread_data = get_thread_data(FALSE);
 108     struct list *liter, *ltmp;
 109     task_timer_t *timer;
 110     task_t *task;
 111
 112     if(!thread_data)
 113         return;
 114
 115     LIST_FOR_EACH_SAFE(liter, ltmp, &thread_data->timer_list) {
 116         timer = LIST_ENTRY(liter, task_timer_t, entry);
 117         if(timer->window->task_magic == target)
 118             release_task_timer(thread_data->thread_hwnd, timer);
 119     }
 120
 121     if(!list_empty(&thread_data->timer_list)) {
 122         DWORD tc = GetTickCount();
 123
 124         timer = LIST_ENTRY(list_head(&thread_data->timer_list), task_timer_t, entry);
 125         SetTimer(thread_data->thread_hwnd, TIMER_ID, max( (int)(timer->time - tc), 0 ), NULL);
 126     }
 127
 128     LIST_FOR_EACH_SAFE(liter, ltmp, &thread_data->task_list) {
 129         task = LIST_ENTRY(liter, task_t, entry);
 130         if(task->target_magic == target) {
 131             list_remove(&task->entry);
 132             task->destr(task);
 133         }
 134     }
 135 }
 136
 137 LONG get_task_target_magic(void)
 138 {
 139     static LONG magic = 0x10000000;
 140     return InterlockedIncrement(&magic);
 141 }
 142
 143 static BOOL queue_timer(thread_data_t *thread_data, task_timer_t *timer)
 144 {
 145     task_timer_t *iter;
 146
 147     list_remove(&timer->entry);
 148
 149     if(list_empty(&thread_data->timer_list)
 150        || LIST_ENTRY(list_head(&thread_data->timer_list), task_timer_t, entry)->time > timer->time) {
 151
 152         list_add_head(&thread_data->timer_list, &timer->entry);
 153         return TRUE;
 154     }
 155
 156     LIST_FOR_EACH_ENTRY(iter, &thread_data->timer_list, task_timer_t, entry) {
 157         if(iter->time > timer->time) {
 158             list_add_tail(&iter->entry, &timer->entry);
 159             return FALSE;
 160         }
 161     }
 162
 163     list_add_tail(&thread_data->timer_list, &timer->entry);
 164     return FALSE;
 165 }
 166
 167 HRESULT set_task_timer(HTMLInnerWindow *window, LONG msec, BOOL interval, IDispatch *disp, LONG *id)
 168 {
 169     thread_data_t *thread_data;
 170     task_timer_t *timer;
 171     DWORD tc = GetTickCount();
 172
 173     static DWORD id_cnt = 0x20000000;
 174
 175     thread_data = get_thread_data(TRUE);
 176     if(!thread_data)
 177         return E_OUTOFMEMORY;
 178
 179     timer = heap_alloc(sizeof(task_timer_t));
 180     if(!timer)
 181         return E_OUTOFMEMORY;
 182
 183     if(msec < 1)
 184         msec = 1;
 185
 186     timer->id = id_cnt++;
 187     timer->window = window;
 188     timer->time = tc + msec;
 189     timer->interval = interval ? msec : 0;
 190     list_init(&timer->entry);
 191
 192     IDispatch_AddRef(disp);
 193     timer->disp = disp;
 194
 195     if(queue_timer(thread_data, timer))
 196         SetTimer(thread_data->thread_hwnd, TIMER_ID, msec, NULL);
 197
 198     *id = timer->id;
 199     return S_OK;
 200 }
 201
 202 HRESULT clear_task_timer(HTMLInnerWindow *window, DWORD id)
 203 {
 204     thread_data_t *thread_data = get_thread_data(FALSE);
 205     task_timer_t *iter;
 206
 207     if(!thread_data)
 208         return S_OK;
 209
 210     LIST_FOR_EACH_ENTRY(iter, &thread_data->timer_list, task_timer_t, entry) {
 211         if(iter->id == id && iter->window == window) {
 212             release_task_timer(thread_data->thread_hwnd, iter);
 213             return S_OK;
 214         }
 215     }
 216
 217     WARN("timet not found\n");
 218     return S_OK;
 219 }
 220
 221 static void call_timer_disp(IDispatch *disp)
 222 {
 223     DISPPARAMS dp = {NULL, NULL, 0, 0};
 224     EXCEPINFO ei;
 225     VARIANT res;
 226     HRESULT hres;
 227
 228     V_VT(&res) = VT_EMPTY;
 229     memset(&ei, 0, sizeof(ei));
 230
 231     TRACE(">>>\n");
 232     hres = IDispatch_Invoke(disp, DISPID_VALUE, &IID_NULL, 0, DISPATCH_METHOD, &dp, &res, &ei, NULL);
 233     if(hres == S_OK)
 234         TRACE("<<<\n");
 235     else
 236         WARN("<<< %08x\n", hres);
 237
 238     VariantClear(&res);
 239 }
 240
 241 static LRESULT process_timer(void)
 242 {
 243     thread_data_t *thread_data;
 244     IDispatch *disp;
 245     DWORD tc;
 246     task_timer_t *timer=NULL, *last_timer;
 247
 248     TRACE("\n");
 249
 250     thread_data = get_thread_data(FALSE);
 251     assert(thread_data != NULL);
 252
 253     if(list_empty(&thread_data->timer_list)) {
 254         KillTimer(thread_data->thread_hwnd, TIMER_ID);
 255         return 0;
 256     }
 257
 258     last_timer = LIST_ENTRY(list_tail(&thread_data->timer_list), task_timer_t, entry);
 259     do {
 260         tc = GetTickCount();
 261         if(timer == last_timer) {
 262             timer = LIST_ENTRY(list_head(&thread_data->timer_list), task_timer_t, entry);
 263             SetTimer(thread_data->thread_hwnd, TIMER_ID, timer->time>tc ? timer->time-tc : 0, NULL);
 264             return 0;
 265         }
 266
 267         timer = LIST_ENTRY(list_head(&thread_data->timer_list), task_timer_t, entry);
 268
 269         if(timer->time > tc) {
 270             SetTimer(thread_data->thread_hwnd, TIMER_ID, timer->time-tc, NULL);
 271             return 0;
 272         }
 273
 274         disp = timer->disp;
 275         IDispatch_AddRef(disp);
 276
 277         if(timer->interval) {
 278             timer->time += timer->interval;
 279             queue_timer(thread_data, timer);
 280         }else {
 281             release_task_timer(thread_data->thread_hwnd, timer);
 282         }
 283
 284         call_timer_disp(disp);
 285
 286         IDispatch_Release(disp);
 287     }while(!list_empty(&thread_data->timer_list));
 288
 289     KillTimer(thread_data->thread_hwnd, TIMER_ID);
 290     return 0;
 291 }
 292
 293 static LRESULT WINAPI hidden_proc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 294 {
 295     switch(msg) {
 296     case WM_PROCESSTASK:
 297         while(1) {
 298             task_t *task = pop_task();
 299             if(!task)
 300                 break;
 301
 302             task->proc(task);
 303             task->destr(task);
 304         }
 305
 306         return 0;
 307     case WM_TIMER:
 308         return process_timer();
 309     }
 310
 311     if(msg > WM_USER)
 312         FIXME("(%p %d %lx %lx)\n", hwnd, msg, wParam, lParam);
 313
 314     return DefWindowProcW(hwnd, msg, wParam, lParam);
 315 }
 316
 317 static HWND create_thread_hwnd(void)
 318 {
 319     static ATOM hidden_wnd_class = 0;
 320     static const WCHAR wszInternetExplorer_Hidden[] = {'I','n','t','e','r','n','e','t',
 321             ' ','E','x','p','l','o','r','e','r','_','H','i','d','d','e','n',0};
 322
 323     if(!hidden_wnd_class) {
 324         WNDCLASSEXW wndclass = {
 325             sizeof(WNDCLASSEXW), 0,
 326             hidden_proc,
 327             0, 0, hInst, NULL, NULL, NULL, NULL,
 328             wszInternetExplorer_Hidden,
 329             NULL
 330         };
 331
 332         hidden_wnd_class = RegisterClassExW(&wndclass);
 333     }
 334
 335     return CreateWindowExW(0, wszInternetExplorer_Hidden, NULL, WS_POPUP,
 336                            0, 0, 0, 0, NULL, NULL, hInst, NULL);
 337 }
 338
 339 HWND get_thread_hwnd(void)
 340 {
 341     thread_data_t *thread_data;
 342
 343     thread_data = get_thread_data(TRUE);
 344     if(!thread_data)
 345         return NULL;
 346
 347     if(!thread_data->thread_hwnd)
 348         thread_data->thread_hwnd = create_thread_hwnd();
 349
 350     return thread_data->thread_hwnd;
 351 }
 352
 353 thread_data_t *get_thread_data(BOOL create)
 354 {
 355     thread_data_t *thread_data;
 356
 357     if(mshtml_tls == TLS_OUT_OF_INDEXES) {
 358         DWORD tls;
 359
 360         if(!create)
 361             return NULL;
 362
 363         tls = TlsAlloc();
 364         if(tls == TLS_OUT_OF_INDEXES)
 365             return NULL;
 366
 367         tls = InterlockedCompareExchange((LONG*)&mshtml_tls, tls, TLS_OUT_OF_INDEXES);
 368         if(tls != mshtml_tls)
 369             TlsFree(tls);
 370     }
 371
 372     thread_data = TlsGetValue(mshtml_tls);
 373     if(!thread_data && create) {
 374         thread_data = heap_alloc_zero(sizeof(thread_data_t));
 375         if(!thread_data)
 376             return NULL;
 377
 378         TlsSetValue(mshtml_tls, thread_data);
 379         list_init(&thread_data->task_list);
 380         list_init(&thread_data->timer_list);
 381     }
 382
 383     return thread_data;
 384 }