Add debug option to print ThreadID with each message.

Also print messages with single fprintf to prevents threads from
interleaving.

Change-Id: Ib3999fe6b1e67b4a16cd7dcde82f3dfc99dd48ff


[ROCm/hip commit: 6de9136002]

projects/hip/src/hip_hcc.cpp

@@ -1359,6 +1359,7 @@ bool ihipStream_t::canSeePeerMemory(const ihipCtx_t *thisCtx, ihipCtx_t *dstCtx,
     // Use blocks to control scope of critical sections.
     {
         LockedAccessor_CtxCrit_t  ctxCrit(dstCtx->criticalData());
+        tprintf(DB_SYNC, "dstCrit lock succeeded\n");
         if (!ctxCrit->isPeer(thisCtx)) {
             return false;
         };
@@ -1366,6 +1367,7 @@ bool ihipStream_t::canSeePeerMemory(const ihipCtx_t *thisCtx, ihipCtx_t *dstCtx,
 
     {
         LockedAccessor_CtxCrit_t  ctxCrit(srcCtx->criticalData());
+        tprintf(DB_SYNC, "srcCrit lock succeeded\n");
         if (!ctxCrit->isPeer(thisCtx)) {
             return false;
         };