shithub: libvpx

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Replace sleep(0) calls in multi-threaded decoder

This is a workaround for gLucid problem.

Change-Id: I188a016a07e4c2ea212444c5a6284ff3c48a5caa

--- a/vp8/common/threading.h

+++ b/vp8/common/threading.h

@@ -75,7 +75,8 @@

 #define thread_sleep(nms) // { struct timespec ts;ts.tv_sec=0; ts.tv_nsec = 1000*nms;nanosleep(&ts, NULL);}

 #else

 #include <unistd.h>

-#define thread_sleep(nms) usleep(nms*1000);// {struct timespec ts;ts.tv_sec=0; ts.tv_nsec = 1000*nms;nanosleep(&ts, NULL);}

+#include <sched.h>

+#define thread_sleep(nms) sched_yield();// {struct timespec ts;ts.tv_sec=0; ts.tv_nsec = 1000*nms;nanosleep(&ts, NULL);}

 #endif

 /* Not Windows. Assume pthreads */

--- a/vp8/decoder/threading.c

+++ b/vp8/decoder/threading.c

@@ -611,15 +611,12 @@

             for (mb_col = 0; mb_col < pc->mb_cols; mb_col++)

             {

-

                 if ( mb_row > 0 && (mb_col & 7) == 0){

-               //if ( mb_row > 0 ){

-                  while (mb_col > (*last_row_current_mb_col - 8) && *last_row_current_mb_col != pc->mb_cols - 1)

-                  {

-                      x86_pause_hint();

-                      thread_sleep(0);

-                  }

-

+                    while (mb_col > (*last_row_current_mb_col - 8) && *last_row_current_mb_col != pc->mb_cols - 1)

+                    {

+                        x86_pause_hint();

+                        thread_sleep(0);

+                    }

                 }

                 if (xd->mode_info_context->mbmi.mode == SPLITMV || xd->mode_info_context->mbmi.mode == B_PRED)

@@ -762,7 +759,6 @@

         for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)

         {

             int Segment = (alt_flt_enabled) ? mbd->mode_info_context->mbmi.segment_id : 0;

-

             if ( mb_row > 0 && (mb_col & 7) == 0){

             // if ( mb_row > 0 ){