| /** |
| * Functions related to EGLDisplay. |
| */ |
| |
| #include <assert.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include "eglcontext.h" |
| #include "eglsurface.h" |
| #include "egldisplay.h" |
| #include "egldriver.h" |
| #include "eglglobals.h" |
| #include "eglstring.h" |
| #include "eglmutex.h" |
| #include "egllog.h" |
| |
| |
| /** |
| * Finish display management. |
| */ |
| void |
| _eglFiniDisplay(void) |
| { |
| _EGLDisplay *dpyList, *dpy; |
| |
| /* atexit function is called with global mutex locked */ |
| dpyList = _eglGlobal.DisplayList; |
| while (dpyList) { |
| EGLint i; |
| |
| /* pop list head */ |
| dpy = dpyList; |
| dpyList = dpyList->Next; |
| |
| for (i = 0; i < _EGL_NUM_RESOURCES; i++) { |
| if (dpy->ResourceLists[i]) { |
| _eglLog(_EGL_DEBUG, "Display %p is destroyed with resources", dpy); |
| break; |
| } |
| } |
| |
| free(dpy); |
| } |
| _eglGlobal.DisplayList = NULL; |
| } |
| |
| |
| /** |
| * Allocate a new _EGLDisplay object for the given nativeDisplay handle. |
| * We'll also try to determine the device driver name at this time. |
| * |
| * Note that nativeDisplay may be an X Display ptr, or a string. |
| */ |
| _EGLDisplay * |
| _eglNewDisplay(NativeDisplayType nativeDisplay) |
| { |
| _EGLDisplay *dpy = (_EGLDisplay *) calloc(1, sizeof(_EGLDisplay)); |
| if (dpy) { |
| dpy->NativeDisplay = nativeDisplay; |
| } |
| return dpy; |
| } |
| |
| |
| /** |
| * Link a display to itself and return the handle of the link. |
| * The handle can be passed to client directly. |
| */ |
| EGLDisplay |
| _eglLinkDisplay(_EGLDisplay *dpy) |
| { |
| _eglLockMutex(_eglGlobal.Mutex); |
| |
| dpy->Next = _eglGlobal.DisplayList; |
| _eglGlobal.DisplayList = dpy; |
| |
| _eglUnlockMutex(_eglGlobal.Mutex); |
| |
| return (EGLDisplay) dpy; |
| } |
| |
| |
| /** |
| * Unlink a linked display from itself. |
| * Accessing an unlinked display should generate EGL_BAD_DISPLAY error. |
| */ |
| void |
| _eglUnlinkDisplay(_EGLDisplay *dpy) |
| { |
| _EGLDisplay *prev; |
| |
| _eglLockMutex(_eglGlobal.Mutex); |
| |
| prev = _eglGlobal.DisplayList; |
| if (prev != dpy) { |
| while (prev) { |
| if (prev->Next == dpy) |
| break; |
| prev = prev->Next; |
| } |
| assert(prev); |
| prev->Next = dpy->Next; |
| } |
| else { |
| _eglGlobal.DisplayList = dpy->Next; |
| } |
| |
| _eglUnlockMutex(_eglGlobal.Mutex); |
| } |
| |
| |
| /** |
| * Find the display corresponding to the specified native display id in all |
| * linked displays. |
| */ |
| _EGLDisplay * |
| _eglFindDisplay(NativeDisplayType nativeDisplay) |
| { |
| _EGLDisplay *dpy; |
| |
| _eglLockMutex(_eglGlobal.Mutex); |
| |
| dpy = _eglGlobal.DisplayList; |
| while (dpy) { |
| if (dpy->NativeDisplay == nativeDisplay) { |
| _eglUnlockMutex(_eglGlobal.Mutex); |
| return dpy; |
| } |
| dpy = dpy->Next; |
| } |
| |
| _eglUnlockMutex(_eglGlobal.Mutex); |
| |
| return NULL; |
| } |
| |
| |
| /** |
| * Destroy the contexts and surfaces that are linked to the display. |
| */ |
| void |
| _eglReleaseDisplayResources(_EGLDriver *drv, _EGLDisplay *display) |
| { |
| _EGLResource *list; |
| |
| list = display->ResourceLists[_EGL_RESOURCE_CONTEXT]; |
| while (list) { |
| _EGLContext *ctx = (_EGLContext *) list; |
| list = list->Next; |
| |
| _eglUnlinkContext(ctx); |
| drv->API.DestroyContext(drv, display, ctx); |
| } |
| assert(!display->ResourceLists[_EGL_RESOURCE_CONTEXT]); |
| |
| list = display->ResourceLists[_EGL_RESOURCE_SURFACE]; |
| while (list) { |
| _EGLSurface *surf = (_EGLSurface *) list; |
| list = list->Next; |
| |
| _eglUnlinkSurface(surf); |
| drv->API.DestroySurface(drv, display, surf); |
| } |
| assert(!display->ResourceLists[_EGL_RESOURCE_SURFACE]); |
| } |
| |
| |
| /** |
| * Free all the data hanging of an _EGLDisplay object, but not |
| * the object itself. |
| */ |
| void |
| _eglCleanupDisplay(_EGLDisplay *disp) |
| { |
| EGLint i; |
| |
| if (disp->Configs) { |
| for (i = 0; i < disp->NumConfigs; i++) |
| free(disp->Configs[i]); |
| free(disp->Configs); |
| disp->Configs = NULL; |
| disp->NumConfigs = 0; |
| } |
| |
| /* XXX incomplete */ |
| } |
| |
| |
| #ifndef _EGL_SKIP_HANDLE_CHECK |
| |
| |
| /** |
| * Return EGL_TRUE if the given handle is a valid handle to a display. |
| */ |
| EGLBoolean |
| _eglCheckDisplayHandle(EGLDisplay dpy) |
| { |
| _EGLDisplay *cur; |
| |
| _eglLockMutex(_eglGlobal.Mutex); |
| cur = _eglGlobal.DisplayList; |
| while (cur) { |
| if (cur == (_EGLDisplay *) dpy) |
| break; |
| cur = cur->Next; |
| } |
| _eglUnlockMutex(_eglGlobal.Mutex); |
| return (cur != NULL); |
| } |
| |
| |
| /** |
| * Return EGL_TRUE if the given resource is valid. That is, the display does |
| * own the resource. |
| */ |
| EGLBoolean |
| _eglCheckResource(void *res, _EGLResourceType type, _EGLDisplay *dpy) |
| { |
| _EGLResource *list = dpy->ResourceLists[type]; |
| |
| if (!res) |
| return EGL_FALSE; |
| |
| while (list) { |
| if (res == (void *) list) { |
| assert(list->Display == dpy); |
| break; |
| } |
| list = list->Next; |
| } |
| |
| return (list != NULL); |
| } |
| |
| |
| #endif /* !_EGL_SKIP_HANDLE_CHECK */ |
| |
| |
| /** |
| * Link a resource to a display. |
| */ |
| void |
| _eglLinkResource(_EGLResource *res, _EGLResourceType type, _EGLDisplay *dpy) |
| { |
| res->Display = dpy; |
| res->Next = dpy->ResourceLists[type]; |
| dpy->ResourceLists[type] = res; |
| } |
| |
| |
| /** |
| * Unlink a linked resource from its display. |
| */ |
| void |
| _eglUnlinkResource(_EGLResource *res, _EGLResourceType type) |
| { |
| _EGLResource *prev; |
| |
| prev = res->Display->ResourceLists[type]; |
| if (prev != res) { |
| while (prev) { |
| if (prev->Next == res) |
| break; |
| prev = prev->Next; |
| } |
| assert(prev); |
| prev->Next = res->Next; |
| } |
| else { |
| res->Display->ResourceLists[type] = res->Next; |
| } |
| |
| res->Next = NULL; |
| res->Display = NULL; |
| } |