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Merge pull request #111639 from timothyqiu/freshy-leaky

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X11: Fix memory leak in `screen_get_refresh_rate()`
This commit is contained in:
Thaddeus Crews
2025-10-14 10:31:32 -05:00
parent 0b47123768 66e5bce653
commit 9cdf3ff3ff
1 changed files with 45 additions and 47 deletions
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92
platform/linuxbsd/x11/display_server_x11.cpp
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@@ -1800,59 +1800,57 @@ Ref<Image> DisplayServerX11::screen_get_image(int p_screen) const {
float DisplayServerX11::screen_get_refresh_rate(int p_screen) const {
_THREAD_SAFE_METHOD_
ERR_FAIL_COND_V_MSG(!xrandr_ext_ok || !xrr_get_monitors, SCREEN_REFRESH_RATE_FALLBACK, "XRandR extension is not available.");
p_screen = _get_screen_index(p_screen);
int screen_count = get_screen_count();
ERR_FAIL_INDEX_V(p_screen, screen_count, SCREEN_REFRESH_RATE_FALLBACK);
//Use xrandr to get screen refresh rate.
if (xrandr_ext_ok) {
XRRScreenResources *screen_info = XRRGetScreenResourcesCurrent(x11_display, windows[MAIN_WINDOW_ID].x11_window);
if (screen_info) {
RRMode current_mode = 0;
xrr_monitor_info *monitors = nullptr;
if (xrr_get_monitors) {
int count = 0;
monitors = xrr_get_monitors(x11_display, windows[MAIN_WINDOW_ID].x11_window, true, &count);
ERR_FAIL_INDEX_V(p_screen, count, SCREEN_REFRESH_RATE_FALLBACK);
} else {
ERR_PRINT("An error occurred while trying to get the screen refresh rate.");
return SCREEN_REFRESH_RATE_FALLBACK;
}
bool found_active_mode = false;
for (int crtc = 0; crtc < screen_info->ncrtc; crtc++) { // Loop through outputs to find which one is currently outputting.
XRRCrtcInfo *monitor_info = XRRGetCrtcInfo(x11_display, screen_info, screen_info->crtcs[crtc]);
if (monitor_info->x != monitors[p_screen].x || monitor_info->y != monitors[p_screen].y) { // If X and Y aren't the same as the monitor we're looking for, this isn't the right monitor. Continue.
continue;
}
if (monitor_info->mode != None) {
current_mode = monitor_info->mode;
found_active_mode = true;
break;
}
}
if (found_active_mode) {
for (int mode = 0; mode < screen_info->nmode; mode++) {
XRRModeInfo m_info = screen_info->modes[mode];
if (m_info.id == current_mode) {
// Snap to nearest 0.01 to stay consistent with other platforms.
return Math::snapped((float)m_info.dotClock / ((float)m_info.hTotal * (float)m_info.vTotal), 0.01);
}
}
}
ERR_PRINT("An error occurred while trying to get the screen refresh rate."); // We should have returned the refresh rate by now. An error must have occurred.
return SCREEN_REFRESH_RATE_FALLBACK;
} else {
ERR_PRINT("An error occurred while trying to get the screen refresh rate.");
return SCREEN_REFRESH_RATE_FALLBACK;
int target_x;
int target_y;
{
int count = 0;
xrr_monitor_info *monitors = xrr_get_monitors(x11_display, windows[MAIN_WINDOW_ID].x11_window, true, &count);
ERR_FAIL_NULL_V(monitors, SCREEN_REFRESH_RATE_FALLBACK);
if (count <= p_screen) {
xrr_free_monitors(monitors);
ERR_FAIL_V_MSG(SCREEN_REFRESH_RATE_FALLBACK, vformat("Invalid screen index: %d (count: %d).", p_screen, count));
}
target_x = monitors[p_screen].x;
target_y = monitors[p_screen].y;
xrr_free_monitors(monitors);
}
ERR_PRINT("An error occurred while trying to get the screen refresh rate.");
return SCREEN_REFRESH_RATE_FALLBACK;
XRRScreenResources *screen_res = XRRGetScreenResourcesCurrent(x11_display, windows[MAIN_WINDOW_ID].x11_window);
ERR_FAIL_NULL_V(screen_res, SCREEN_REFRESH_RATE_FALLBACK);
XRRModeInfo *mode_info = nullptr;
for (int crtc = 0; crtc < screen_res->ncrtc; crtc++) { // Loop through outputs to find which one is currently outputting.
XRRCrtcInfo *monitor_info = XRRGetCrtcInfo(x11_display, screen_res, screen_res->crtcs[crtc]);
if (monitor_info->x != target_x || monitor_info->y != target_y || monitor_info->mode == None) {
XRRFreeCrtcInfo(monitor_info);
continue;
}
for (int mode = 0; mode < screen_res->nmode; mode++) {
if (screen_res->modes[mode].id == monitor_info->mode) {
mode_info = &screen_res->modes[mode];
}
}
XRRFreeCrtcInfo(monitor_info);
break;
}
float result;
if (mode_info) {
// Snap to nearest 0.01 to stay consistent with other platforms.
result = Math::snapped((float)mode_info->dotClock / ((float)mode_info->hTotal * (float)mode_info->vTotal), 0.01);
} else {
ERR_PRINT("An error occurred while trying to get the screen refresh rate.");
result = SCREEN_REFRESH_RATE_FALLBACK;
}
XRRFreeScreenResources(screen_res);
return result;
}
#ifdef DBUS_ENABLED