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