replay: Add a --loop option to repeatedly loop over the final frame

[apitrace] / retrace / retrace_main.cpp

diff --git a/retrace/retrace_main.cpp b/retrace/retrace_main.cpp
index 7cc3fcab869bf0e5935d504838275de4909bd940..0c358e185517a80e08973a23666a3ad89c62379c 100644 (file)
--- a/retrace/retrace_main.cpp
+++ b/retrace/retrace_main.cpp
@@ -42,11 +42,13 @@
 
 
 static bool waitOnFinish = false;
+static bool loopOnFinish = false;
 
 static const char *comparePrefix = NULL;
 static const char *snapshotPrefix = NULL;
 static trace::CallSet snapshotFrequency;
 static trace::CallSet compareFrequency;
+static trace::ParseBookmark lastFrameStart;
 
 static unsigned dumpStateCallNo = ~0;
 
@@ -76,6 +78,7 @@ bool profilingCpuTimes = false;
 bool profilingPixelsDrawn = false;
 bool profilingMemoryUsage = false;
 bool useCallNos = true;
+bool singleThread = false;
 
 unsigned frameNo = 0;
 unsigned callNo = 0;
@@ -308,13 +311,34 @@ public:
      */
     void
     runLeg(trace::Call *call) {
+
         /* Consume successive calls for this thread. */
         do {
+            bool callEndsFrame = false;
+            static trace::ParseBookmark frameStart;
+
             assert(call);
             assert(call->thread_id == leg);
+
+            if (loopOnFinish && call->flags & trace::CALL_FLAG_END_FRAME) {
+                callEndsFrame = true;
+                parser.getBookmark(frameStart);
+            }
+
             retraceCall(call);
             delete call;
             call = parser.parse_call();
+
+            /* Restart last frame if looping is requested. */
+            if (loopOnFinish) {
+                if (!call) {
+                    parser.setBookmark(lastFrameStart);
+                    call = parser.parse_call();
+                } else if (callEndsFrame) {
+                    lastFrameStart = frameStart;
+                }
+            }
+
         } while (call && call->thread_id == leg);
 
         if (call) {
@@ -422,6 +446,14 @@ RelayRace::run(void) {
         return;
     }
 
+    /* If the user wants to loop we need to get a bookmark target. We
+     * usually get this after replaying a call that ends a frame, but
+     * for a trace that has only one frame we need to get it at the
+     * beginning. */
+    if (loopOnFinish) {
+        parser.getBookmark(lastFrameStart);
+    }
+
     RelayRunner *foreRunner = getForeRunner();
     if (call->thread_id == 0) {
         /* We are the forerunner thread, so no need to pass baton */
@@ -483,8 +515,17 @@ mainLoop() {
 
     startTime = os::getTime();
 
-    RelayRace race;
-    race.run();
+    if (singleThread) {
+        trace::Call *call;
+        while ((call = parser.parse_call())) {
+            retraceCall(call);
+            delete call;
+        };
+        flushRendering();
+    } else {
+        RelayRace race;
+        race.run();
+    }
 
     long long endTime = os::getTime();
     float timeInterval = (endTime - startTime) * (1.0 / os::timeFrequency);
@@ -529,7 +570,9 @@ usage(const char *argv0) {
         "  -S, --snapshot=CALLSET  calls to snapshot (default is every frame)\n"
         "  -v, --verbose           increase output verbosity\n"
         "  -D, --dump-state=CALL   dump state at specific call no\n"
-        "  -w, --wait              waitOnFinish on final frame\n";
+        "  -w, --wait              waitOnFinish on final frame\n"
+        "      --loop              continuously loop, replaying final frame.\n"
+        "      --singlethread      use a single thread to replay command stream\n";
 }
 
 enum {
@@ -542,6 +585,8 @@ enum {
     PPD_OPT,
     PMEM_OPT,
     SB_OPT,
+    LOOP_OPT,
+    SINGLETHREAD_OPT
 };
 
 const static char *
@@ -567,6 +612,8 @@ longOptions[] = {
     {"snapshot", required_argument, 0, 'S'},
     {"verbose", no_argument, 0, 'v'},
     {"wait", no_argument, 0, 'w'},
+    {"loop", no_argument, 0, LOOP_OPT},
+    {"singlethread", no_argument, 0, SINGLETHREAD_OPT},
     {0, 0, 0, 0}
 };
 
@@ -639,6 +686,9 @@ int main(int argc, char **argv)
         case SB_OPT:
             retrace::doubleBuffer = false;
             break;
+        case SINGLETHREAD_OPT:
+            retrace::singleThread = true;
+            break;
         case 's':
             snapshotPrefix = optarg;
             if (snapshotFrequency.empty()) {
@@ -661,6 +711,9 @@ int main(int argc, char **argv)
         case 'w':
             waitOnFinish = true;
             break;
+        case LOOP_OPT:
+            loopOnFinish = true;
+            break;
         case PGPU_OPT:
             retrace::debug = false;
             retrace::profiling = true;