0810238d22
Currently, ClutterFrameClock uses g_source_set_ready_time() to determine the usec timing of the next frame. That translates into a poll() with a millisecond timeout if no trigger occurs to break the poll() out early. To avoid spinning the CPU, GLib always rounds *up* to the next millisecond value unless a timeout of 0 was provided by a GSource. This means that timeouts for the ClutterFrameClock can easily skew beyond their expected time as the precision is too coarse. This applies the same concept as GNOME/glib!3949 but just for the ClutterFrameClock. That may be more ideal than adding a timerfd for every GMainContext, but we'll see if that lands upstream. I wanted to provide this here because it could easily be cherry-picked in the mean time if this is found to be useful. From a timer stability perspective, this improves things from erratically jumping between 100s and 1000s off of the expected awake time to single or low double digits. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3636>
134 lines
3.2 KiB
Text
134 lines
3.2 KiB
Text
/* The prefix for our gettext translation domains. */
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#mesondefine GETTEXT_PACKAGE
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/* Version number of package */
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#mesondefine VERSION
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/* Name of package */
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#mesondefine PACKAGE_NAME
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/* Version number of package */
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#mesondefine PACKAGE_VERSION
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/* Search path for plugins */
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#mesondefine MUTTER_PLUGIN_DIR
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/* */
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#mesondefine MUTTER_LOCALEDIR
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/* */
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#mesondefine MUTTER_LIBEXECDIR
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/* */
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#mesondefine MUTTER_PKGDATADIR
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/* Defined if EGL support is enabled */
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#mesondefine HAVE_EGL
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/* Defined if EGLDevice support is enabled */
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#mesondefine HAVE_EGL_DEVICE
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/* Have GLX for rendering */
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#mesondefine HAVE_GLX
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#mesondefine HAVE_EGL_PLATFORM_XLIB
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/* Have GL for rendering */
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#mesondefine HAVE_GL
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/* Have GLES 2.0 for rendering */
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#mesondefine HAVE_GLES2
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/* Defined if EGLStream support is enabled */
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#mesondefine HAVE_WAYLAND_EGLSTREAM
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/* Building with gudev for device type detection */
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#mesondefine HAVE_LIBGUDEV
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/* Building with libwacom for advanced tablet management */
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#mesondefine HAVE_LIBWACOM
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/* Building with libsystemd */
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#mesondefine HAVE_LIBSYSTEMD
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/* Define if you want to enable the native (KMS) backend based on systemd */
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#mesondefine HAVE_NATIVE_BACKEND
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/* Define if you want to enable Wayland support */
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#mesondefine HAVE_WAYLAND
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/* Define if you want to enable XWayland support */
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#mesondefine HAVE_XWAYLAND
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/* Define if you want to enable X11 backend support */
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#mesondefine HAVE_X11
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/* Define if either XWayland or X11 backend are enabled */
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#mesondefine HAVE_X11_CLIENT
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/* Defined if screen cast and remote desktop support is enabled */
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#mesondefine HAVE_REMOTE_DESKTOP
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/* Defined if gnome-desktop is enabled */
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#mesondefine HAVE_GNOME_DESKTOP
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/* Defined if sound player is enabled */
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#mesondefine HAVE_SOUND_PLAYER
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/* Building with SM support */
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#mesondefine HAVE_SM
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/* Building with startup notification support */
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#mesondefine HAVE_STARTUP_NOTIFICATION
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/* Building with Sysprof profiling support */
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#mesondefine HAVE_PROFILER
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/* Path to Xwayland executable */
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#mesondefine XWAYLAND_PATH
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/* Xwayland applications allowed to issue keyboard grabs */
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#mesondefine XWAYLAND_GRAB_DEFAULT_ACCESS_RULES
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/* XKB base prefix */
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#mesondefine XKB_BASE
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/* Whether <sys/prctl.h> exists and it defines prctl() */
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#mesondefine HAVE_SYS_PRCTL
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/* Either <sys/random.h> or <linux/random.h> */
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#mesondefine HAVE_SYS_RANDOM
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#mesondefine HAVE_LINUX_RANDOM
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/* Whether Xwayland has -initfd option */
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#mesondefine HAVE_XWAYLAND_INITFD
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/* Whether Xwayland has -listenfd option */
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#mesondefine HAVE_XWAYLAND_LISTENFD
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/* Whether the mkostemp function exists */
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#mesondefine HAVE_MKOSTEMP
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/* Whether the posix_fallocate function exists */
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#mesondefine HAVE_POSIX_FALLOCATE
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/* Whether the memfd_create function exists */
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#mesondefine HAVE_MEMFD_CREATE
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/* Whether the Xwayland -terminate supports a delay */
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#mesondefine HAVE_XWAYLAND_TERMINATE_DELAY
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/* Whether the Xwayland supports +/-byteswappedclients */
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#mesondefine HAVE_XWAYLAND_BYTE_SWAPPED_CLIENTS
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/* Defined if libdisplay-info is enabled */
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#mesondefine HAVE_LIBDISPLAY_INFO
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/* Whether the Xwayland has -enable-ei-portal option */
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#mesondefine HAVE_XWAYLAND_ENABLE_EI_PORTAL
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/* Supports PangoFt2 */
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#mesondefine HAVE_PANGO_FT2
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/* Supports timerfd_create/timerfd_settime */
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#mesondefine HAVE_TIMERFD
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