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/**
* 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 "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(EGLNativeDisplayType 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(EGLNativeDisplayType 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;
disp->MaxConfigs = 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)
{
assert(!res->Display || res->Display == dpy);
res->Display = dpy;
res->IsLinked = EGL_TRUE;
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;
/* do not reset res->Display */
res->IsLinked = EGL_FALSE;
}
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