On 10/25/2017 10:55 PM, Jose Fonseca wrote:
On 23/10/17 20:15, Emil Velikov wrote:
Hi Nicolai,

On 22 October 2017 at 20:07, Nicolai Hähnle <nhaeh...@gmail.com> wrote:
From: Nicolai Hähnle <nicolai.haeh...@amd.com>

C11 threads were changed to use struct timespec instead of xtime, and
thrd_sleep got a second argument.

As xtime was replaced with timespec there's a couple of odd bits in
the code.


See http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1554.htm and
http://en.cppreference.com/w/c/thread/{thrd_sleep,cnd_timedwait,mtx_timedlock}


Note that cnd_timedwait is spec'd to be relative to TIME_UTC /
CLOCK_REALTIME.

Cc: Jose Fonseca <jfons...@vmware.com>
---
  include/c11/threads.h           | 11 -----------
  include/c11/threads_posix.h     | 39
+++++++++++++++------------------------
  include/c11/threads_win32.h     | 37
+++++++++++++++++++------------------
  src/egl/drivers/dri2/egl_dri2.c | 24 +++++++++++++-----------
  4 files changed, 47 insertions(+), 64 deletions(-)

diff --git a/include/c11/threads.h b/include/c11/threads.h
index 573348d8091..3c3f23a8ab8 100644
--- a/include/c11/threads.h
+++ b/include/c11/threads.h
@@ -23,42 +23,31 @@
   * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN
NO EVENT
   * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE
BE LIABLE
   * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR
OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   */
  #ifndef EMULATED_THREADS_H_INCLUDED_
  #define EMULATED_THREADS_H_INCLUDED_

  #include <time.h>
-#ifdef _MSC_VER
-#include <thr/xtimec.h>  // for xtime
-#endif

  #ifndef TIME_UTC
  #define TIME_UTC 1
  #endif

  #include "c99_compat.h" /* for `inline` */

  /*---------------------------- types ----------------------------*/
  typedef void (*tss_dtor_t)(void*);
  typedef int (*thrd_start_t)(void*);

-#ifndef _MSC_VER
-struct xtime {
-    time_t sec;
-    long nsec;
-};
-typedef struct xtime xtime;
-#endif
-

We don't have a fall-back declaration of the struct, yet we use it
below and provide a timespec_get() implementation.
I'd imagine you haven't tested this on Windows (hence Jose in CC)?

Quick search suggests that MSVC 2015 was the first one that introduces
the struct and timespec_get.

If we're safe as-is, please add a comment with some details - I'd
imagine Jose had better knowledge in the area.


  /*-------------------- 7.25.7 Time functions --------------------*/
  // 7.25.6.1
+#if 0
I'd just drop the hunk mentioning that timespec_get() is part of time.h


Thank
Emil

If there's doubt, I suggest testing Visual Studio with AppVeyor by
pushing the changes as a feature branch to FDO's git -- I believe that
should trigger an AppVeyor build.  (Push to a github repos hooked into
Appveyor, depending on what people are more confortable with.)

Alternatively reach out to Brian or Roland.

I applied this patch to today's ToT and got some compiler errors:


scons: Building targets ...
cl /Fobuild\windows-x86-debug\gallium\tests\unit\pipe_barrier_test.obj /c src\ga llium\tests\unit\pipe_barrier_test.c /nologo /Od /Oi /Oy- /W3 /wd4018 /wd4056 /w d4244 /wd4267 /wd4305 /wd4351 /wd4756 /wd4800 /wd4996 /arch:SSE2 /MTd -FIinttype s.h /D__STDC_CONSTANT_MACROS /D__STDC_FORMAT_MACROS /D__STDC_LIMIT_MACROS /DHAVE _NO_AUTOCONF /DDEBUG /DWIN32 /D_WINDOWS /D_WIN32_WINNT=0x0601 /DWINVER=0x0601 /D VC_EXTRALEAN /D_USE_MATH_DEFINES /D_CRT_SECURE_NO_WARNINGS /D_CRT_SECURE_NO_DEPR ECATE /D_SCL_SECURE_NO_WARNINGS /D_SCL_SECURE_NO_DEPRECATE /D_ALLOW_KEYWORD_MACR OS /D_HAS_EXCEPTIONS=0 /D_DEBUG /DPIPE_SUBSYSTEM_WINDOWS_USER /DPACKAGE_VERSION= \"17.4.0-devel\" /DPACKAGE_BUGREPORT=\"https://bugs.freedesktop.org/enter_bug.cg i?product=Mesa\" /Iinclude /Isrc\gallium\include /Isrc\gallium\auxiliary /Isrc\g allium\drivers /Isrc\gallium\winsys /Ibuild\windows-x86-debug /Isrc /Isrc /Ibuil d\windows-x86-debug\gallium\tests\unit\indices /Isrc\gallium\tests\unit\indices /Ibuild\windows-x86-debug\gallium\tests\unit\util /Isrc\gallium\tests\unit\util
/Z7
pipe_barrier_test.c
c:\users\brian\projects\mesa\include\c11\threads_win32.h(389): error C2065: 'ts'
: undeclared identifier
c:\users\brian\projects\mesa\include\c11\threads_win32.h(389): warning C4047: 'f
unction': 'const timespec *' differs in levels of indirection from 'int'
c:\users\brian\projects\mesa\include\c11\threads_win32.h(389): warning C4024: 'i
mpl_cond_do_wait': different types for formal and actual parameter 3
c:\users\brian\projects\mesa\include\c11\threads_win32.h(639): error C2084: func
tion 'int timespec_get(timespec *const ,const int)' already has a body
C:\Program Files\Windows Kits\10\include\10.0.10240.0\ucrt\time.h(539): note: se
e previous definition of 'timespec_get'
scons: *** [build\windows-x86-debug\gallium\tests\unit\pipe_barrier_test.obj] Er
ror 2
scons: building terminated because of errors.


I don't have time to investigate/fix.  Maybe you can, Nicolai.

-Brian

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