[Tracing] V8 Tracing Controller - Add args and copy support

test/cctest/libplatform/test-tracing.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
-#include <stdio.h>
+#include <limits>
 
 #include "include/libplatform/v8-tracing.h"
 #include "src/tracing/trace-event.h"
 #include "test/cctest/cctest.h"
 
 namespace v8 {
 namespace platform {
 namespace tracing {
 
 TEST(TestTraceConfig) {
@@ skipping 120 matching lines @@
         'Y', tracing_controller.GetCategoryGroupEnabled("v8-cat"), "Test1",
         v8::internal::tracing::kGlobalScope, 43, 456, 0, NULL, NULL, NULL, 0,
         55, 66, 110, 55, 77, 88);
     writer->AppendTraceEvent(&trace_object);
     tracing_controller.StopTracing();
   }
 
   std::string trace_str = stream.str();
   std::string expected_trace_str =
       "{\"traceEvents\":[{\"pid\":11,\"tid\":22,\"ts\":100,\"tts\":50,"
-      "\"ph\":\"X\",\"cat\":\"v8-cat\",\"name\":\"Test0\",\"args\":{},"
-      "\"dur\":33,\"tdur\":44},{\"pid\":55,\"tid\":66,\"ts\":110,\"tts\":55,"
-      "\"ph\":\"Y\",\"cat\":\"v8-cat\",\"name\":\"Test1\",\"args\":{},\"dur\":"
-      "77,\"tdur\":88}]}";
+      "\"ph\":\"X\",\"cat\":\"v8-cat\",\"name\":\"Test0\",\"dur\":33,"
+      "\"tdur\":44,\"args\":{}},{\"pid\":55,\"tid\":66,\"ts\":110,\"tts\":55,"
+      "\"ph\":\"Y\",\"cat\":\"v8-cat\",\"name\":\"Test1\",\"dur\":77,"
+      "\"tdur\":88,\"args\":{}}]}";
 
   CHECK_EQ(expected_trace_str, trace_str);
 
   i::V8::SetPlatformForTesting(old_platform);
 }
 
 TEST(TestTracingController) {
   v8::Platform* old_platform = i::V8::GetCurrentPlatform();
   v8::Platform* default_platform = v8::platform::CreateDefaultPlatform();
   i::V8::SetPlatformForTesting(default_platform);
@@ skipping 15 matching lines @@
   TRACE_EVENT0("v8", "v8.Test3");
   tracing_controller.StopTracing();
 
   CHECK_EQ(2, writer->events().size());
   CHECK_EQ(std::string("v8.Test"), writer->events()[0]);
   CHECK_EQ(std::string("v8.Test3"), writer->events()[1]);
 
   i::V8::SetPlatformForTesting(old_platform);
 }
 
+void GetJSONStrings(std::vector<std::string>& ret, std::string str,
+                    std::string param, std::string start_delim,
+                    std::string end_delim) {
+  size_t pos = str.find(param);
+  while (pos != std::string::npos) {
+    size_t start_pos = str.find(start_delim, pos + param.length());
+    size_t end_pos = str.find(end_delim, start_pos + 1);
+    CHECK_NE(start_pos, std::string::npos);
+    CHECK_NE(end_pos, std::string::npos);
+    ret.push_back(str.substr(start_pos + 1, end_pos - start_pos - 1));
+    pos = str.find(param, pos + 1);
+  }
+}
+
+TEST(TestTracingControllerMultipleArgsAndCopy) {
+  std::ostringstream stream;
+  v8::Platform* old_platform = i::V8::GetCurrentPlatform();
+  v8::Platform* default_platform = v8::platform::CreateDefaultPlatform();
+  i::V8::SetPlatformForTesting(default_platform);
+
+  uint64_t aa = 11;
+  unsigned int bb = 22;
+  uint16_t cc = 33;
+  unsigned char dd = 44;
+  int64_t ee = -55;
+  int ff = -66;
+  int16_t gg = -77;
+  signed char hh = -88;
+  bool ii1 = true;
+  bool ii2 = false;
+  double jj1 = 99.0;
+  double jj2 = 1e100;
+  double jj3 = std::numeric_limits<double>::quiet_NaN();
+  double jj4 = std::numeric_limits<double>::infinity();
+  double jj5 = -std::numeric_limits<double>::infinity();
+  void* kk = &aa;
+  const char* ll = "100";
+  std::string mm = "INIT";
+
+  // Create a scope for the tracing controller to terminate the trace writer.
+  {
+    TracingController tracing_controller;
+    platform::SetTracingController(default_platform, &tracing_controller);
+    TraceWriter* writer = TraceWriter::CreateJSONTraceWriter(stream);
+
+    TraceBuffer* ring_buffer =
+        TraceBuffer::CreateTraceBufferRingBuffer(1, writer);
+    tracing_controller.Initialize(ring_buffer);
+    TraceConfig* trace_config = new TraceConfig();
+    trace_config->AddIncludedCategory("v8");
+    tracing_controller.StartTracing(trace_config);
+
+    TRACE_EVENT1("v8", "v8.Test.aa", "aa", aa);
+    TRACE_EVENT1("v8", "v8.Test.bb", "bb", bb);
+    TRACE_EVENT1("v8", "v8.Test.cc", "cc", cc);
+    TRACE_EVENT1("v8", "v8.Test.dd", "dd", dd);
+    TRACE_EVENT1("v8", "v8.Test.ee", "ee", ee);
+    TRACE_EVENT1("v8", "v8.Test.ff", "ff", ff);
+    TRACE_EVENT1("v8", "v8.Test.gg", "gg", gg);
+    TRACE_EVENT1("v8", "v8.Test.hh", "hh", hh);
+    TRACE_EVENT1("v8", "v8.Test.ii", "ii1", ii1);
+    TRACE_EVENT1("v8", "v8.Test.ii", "ii2", ii2);
+    TRACE_EVENT1("v8", "v8.Test.jj1", "jj1", jj1);
+    TRACE_EVENT1("v8", "v8.Test.jj2", "jj2", jj2);
+    TRACE_EVENT1("v8", "v8.Test.jj3", "jj3", jj3);
+    TRACE_EVENT1("v8", "v8.Test.jj4", "jj4", jj4);
+    TRACE_EVENT1("v8", "v8.Test.jj5", "jj5", jj5);
+    TRACE_EVENT1("v8", "v8.Test.kk", "kk", kk);
+    TRACE_EVENT1("v8", "v8.Test.ll", "ll", ll);
+    TRACE_EVENT1("v8", "v8.Test.mm", "mm", TRACE_STR_COPY(mm.c_str()));
+
+    TRACE_EVENT2("v8", "v8.Test2.1", "aa", aa, "ll", ll);
+    TRACE_EVENT2("v8", "v8.Test2.2", "mm1", TRACE_STR_COPY(mm.c_str()), "mm2",
+                 TRACE_STR_COPY(mm.c_str()));
+
+    // Check copies are correct.
+    TRACE_EVENT_COPY_INSTANT0("v8", mm.c_str(), TRACE_EVENT_SCOPE_THREAD);
+    TRACE_EVENT_COPY_INSTANT1("v8", mm.c_str(), TRACE_EVENT_SCOPE_THREAD,
+                              mm.c_str(), mm.c_str());
+    TRACE_EVENT_COPY_INSTANT2("v8", mm.c_str(), TRACE_EVENT_SCOPE_THREAD,
+                              mm.c_str(), mm.c_str(), mm.c_str(), mm.c_str());
+    mm = "CHANGED";
+
+    tracing_controller.StopTracing();
+  }
+
+  std::string trace_str = stream.str();
+
+  std::vector<std::string> all_args, all_names, all_cats;
+  GetJSONStrings(all_args, trace_str, "\"args\"", "{", "}");
+  GetJSONStrings(all_names, trace_str, "\"name\"", "\"", "\"");
+  GetJSONStrings(all_cats, trace_str, "\"cat\"", "\"", "\"");
+
+  CHECK_EQ(all_args.size(), 23);
+  CHECK_EQ(all_args[0], "\"aa\":11");
+  CHECK_EQ(all_args[1], "\"bb\":22");
+  CHECK_EQ(all_args[2], "\"cc\":33");
+  CHECK_EQ(all_args[3], "\"dd\":44");
+  CHECK_EQ(all_args[4], "\"ee\":-55");
+  CHECK_EQ(all_args[5], "\"ff\":-66");
+  CHECK_EQ(all_args[6], "\"gg\":-77");
+  CHECK_EQ(all_args[7], "\"hh\":-88");
+  CHECK_EQ(all_args[8], "\"ii1\":true");
+  CHECK_EQ(all_args[9], "\"ii2\":false");
+  CHECK_EQ(all_args[10], "\"jj1\":99.0");
+  CHECK_EQ(all_args[11], "\"jj2\":1e+100");
+  CHECK_EQ(all_args[12], "\"jj3\":\"NaN\"");
+  CHECK_EQ(all_args[13], "\"jj4\":\"Infinity\"");
+  CHECK_EQ(all_args[14], "\"jj5\":\"-Infinity\"");
+  std::ostringstream pointer_stream;
+  pointer_stream << "\"kk\":\"" << &aa << "\"";
+  CHECK_EQ(all_args[15], pointer_stream.str());
+  CHECK_EQ(all_args[16], "\"ll\":\"100\"");
+  CHECK_EQ(all_args[17], "\"mm\":\"INIT\"");
+
+  CHECK_EQ(all_names[18], "v8.Test2.1");
+  CHECK_EQ(all_args[18], "\"aa\":11,\"ll\":\"100\"");
+  CHECK_EQ(all_args[19], "\"mm1\":\"INIT\",\"mm2\":\"INIT\"");
+
+  CHECK_EQ(all_names[20], "INIT");
+  CHECK_EQ(all_names[21], "INIT");
+  CHECK_EQ(all_args[21], "\"INIT\":\"INIT\"");
+  CHECK_EQ(all_names[22], "INIT");
+  CHECK_EQ(all_args[22], "\"INIT\":\"INIT\",\"INIT\":\"INIT\"");
+
+  i::V8::SetPlatformForTesting(old_platform);
+}
+
 }  // namespace tracing
 }  // namespace platform
 }  // namespace v8