Files
RedBear-OS/recipes/tools/nano/source/m4/clock_time.m4
T
vasilito 7686729069 drm: implement syncobj and fence for VIRGL/VirtIO driver
Extract protocol-agnostic FenceTimeline from Intel to shared
src/drivers/fence.rs — atomic-based fence tracking suitable
for Intel, VIRGL, and AMD drivers.

Extract protocol-agnostic SyncobjManager from Intel to shared
src/drivers/syncobj.rs — syncobj create/destroy/signal/reset/
wait/query and sync_file fd export/import.

Wire both into VirtioDriver:
- Add FenceTimeline + SyncobjManager fields
- Implement all 5 GpuDriver syncobj trait methods
  (create, destroy, wait, export_fd, import_fd)
- Track fence seqnos in virgl_submit_3d (allocate
  before submit, signal after completion)

Intel fence.rs and syncobj.rs converted to thin re-export
modules pointing at shared sources — no behavioral change
for Intel driver.

This gives Mesa VIRGL userspace the standard DRM syncobj
API for GPU/compositor synchronization.
2026-06-02 14:33:28 +03:00

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# clock_time.m4 serial 12
dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
# Check for clock_getres, clock_gettime and clock_settime,
# and set CLOCK_TIME_LIB.
# For a program named, say foo, you should add a line like the following
# in the corresponding Makefile.am file:
# foo_LDADD = $(LDADD) $(CLOCK_TIME_LIB)
AC_DEFUN([gl_CLOCK_TIME],
[
dnl Persuade glibc and Solaris <time.h> to declare these functions.
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
# Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
# Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
# Save and restore LIBS so e.g., -lrt, isn't added to it. Otherwise, *all*
# programs in the package would end up linked with that potentially-shared
# library, inducing unnecessary run-time overhead.
CLOCK_TIME_LIB=
AC_SUBST([CLOCK_TIME_LIB])
gl_saved_libs=$LIBS
AC_SEARCH_LIBS([clock_gettime], [rt posix4],
[test "$ac_cv_search_clock_gettime" = "none required" ||
CLOCK_TIME_LIB=$ac_cv_search_clock_gettime])
AC_CHECK_FUNCS([clock_getres clock_gettime clock_settime])
LIBS=$gl_saved_libs
# For backward compatibility.
LIB_CLOCK_GETTIME="$CLOCK_TIME_LIB"
AC_SUBST([LIB_CLOCK_GETTIME])
])