Move base/debug/trace_event* to base/trace_event/ [part 1]

base/debug/trace_event_android.cc

Index: base/debug/trace_event_android.cc
diff --git a/base/debug/trace_event_android.cc b/base/debug/trace_event_android.cc
deleted file mode 100644
index f08fffca35fa766038298ae503315794ce013811..0000000000000000000000000000000000000000
--- a/base/debug/trace_event_android.cc
+++ /dev/null
@@ -1,199 +0,0 @@
-// Copyright (c) 2012 The Chromium 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 "base/debug/trace_event_impl.h"
-
-#include <fcntl.h>
-
-#include "base/debug/trace_event.h"
-#include "base/format_macros.h"
-#include "base/logging.h"
-#include "base/strings/stringprintf.h"
-#include "base/synchronization/waitable_event.h"
-
-namespace {
-
-int g_atrace_fd = -1;
-const char kATraceMarkerFile[] = "/sys/kernel/debug/tracing/trace_marker";
-
-void WriteEvent(
-    char phase,
-    const char* category_group,
-    const char* name,
-    unsigned long long id,
-    const char** arg_names,
-    const unsigned char* arg_types,
-    const base::debug::TraceEvent::TraceValue* arg_values,
-    const scoped_refptr<base::debug::ConvertableToTraceFormat>*
-        convertable_values,
-    unsigned char flags) {
-  std::string out = base::StringPrintf("%c|%d|%s", phase, getpid(), name);
-  if (flags & TRACE_EVENT_FLAG_HAS_ID)
-    base::StringAppendF(&out, "-%" PRIx64, static_cast<uint64>(id));
-  out += '|';
-
-  for (int i = 0; i < base::debug::kTraceMaxNumArgs && arg_names[i]; ++i) {
-    if (i)
-      out += ';';
-    out += arg_names[i];
-    out += '=';
-    std::string::size_type value_start = out.length();
-    if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) {
-      convertable_values[i]->AppendAsTraceFormat(&out);
-    } else {
-      base::debug::TraceEvent::AppendValueAsJSON(
-          arg_types[i], arg_values[i], &out);
-    }
-    // Remove the quotes which may confuse the atrace script.
-    ReplaceSubstringsAfterOffset(&out, value_start, "\\\"", "'");
-    ReplaceSubstringsAfterOffset(&out, value_start, "\"", "");
-    // Replace chars used for separators with similar chars in the value.
-    std::replace(out.begin() + value_start, out.end(), ';', ',');
-    std::replace(out.begin() + value_start, out.end(), '|', '!');
-  }
-
-  out += '|';
-  out += category_group;
-  write(g_atrace_fd, out.c_str(), out.size());
-}
-
-void NoOpOutputCallback(base::WaitableEvent* complete_event,
-                        const scoped_refptr<base::RefCountedString>&,
-                        bool has_more_events) {
-  if (!has_more_events)
-    complete_event->Signal();
-}
-
-void EndChromeTracing(base::debug::TraceLog* trace_log,
-                      base::WaitableEvent* complete_event) {
-  trace_log->SetDisabled();
-  // Delete the buffered trace events as they have been sent to atrace.
-  trace_log->Flush(base::Bind(&NoOpOutputCallback, complete_event));
-}
-
-}  // namespace
-
-namespace base {
-namespace debug {
-
-// These functions support Android systrace.py when 'webview' category is
-// traced. With the new adb_profile_chrome, we may have two phases:
-// - before WebView is ready for combined tracing, we can use adb_profile_chrome
-//   to trace android categories other than 'webview' and chromium categories.
-//   In this way we can avoid the conflict between StartATrace/StopATrace and
-//   the intents.
-// - TODO(wangxianzhu): after WebView is ready for combined tracing, remove
-//   StartATrace, StopATrace and SendToATrace, and perhaps send Java traces
-//   directly to atrace in trace_event_binding.cc.
-
-void TraceLog::StartATrace() {
-  if (g_atrace_fd != -1)
-    return;
-
-  g_atrace_fd = open(kATraceMarkerFile, O_WRONLY);
-  if (g_atrace_fd == -1) {
-    PLOG(WARNING) << "Couldn't open " << kATraceMarkerFile;
-    return;
-  }
-  SetEnabled(CategoryFilter(CategoryFilter::kDefaultCategoryFilterString),
-             TraceLog::RECORDING_MODE,
-             TraceOptions(RECORD_CONTINUOUSLY));
-}
-
-void TraceLog::StopATrace() {
-  if (g_atrace_fd == -1)
-    return;
-
-  close(g_atrace_fd);
-  g_atrace_fd = -1;
-
-  // TraceLog::Flush() requires the current thread to have a message loop, but
-  // this thread called from Java may not have one, so flush in another thread.
-  Thread end_chrome_tracing_thread("end_chrome_tracing");
-  WaitableEvent complete_event(false, false);
-  end_chrome_tracing_thread.Start();
-  end_chrome_tracing_thread.message_loop()->PostTask(
-      FROM_HERE, base::Bind(&EndChromeTracing, Unretained(this),
-                            Unretained(&complete_event)));
-  complete_event.Wait();
-}
-
-void TraceEvent::SendToATrace() {
-  if (g_atrace_fd == -1)
-    return;
-
-  const char* category_group =
-      TraceLog::GetCategoryGroupName(category_group_enabled_);
-
-  switch (phase_) {
-    case TRACE_EVENT_PHASE_BEGIN:
-      WriteEvent('B', category_group, name_, id_,
-                 arg_names_, arg_types_, arg_values_, convertable_values_,
-                 flags_);
-      break;
-
-    case TRACE_EVENT_PHASE_COMPLETE:
-      WriteEvent(duration_.ToInternalValue() == -1 ? 'B' : 'E',
-                 category_group, name_, id_,
-                 arg_names_, arg_types_, arg_values_, convertable_values_,
-                 flags_);
-      break;
-
-    case TRACE_EVENT_PHASE_END:
-      // Though a single 'E' is enough, here append pid, name and
-      // category_group etc. So that unpaired events can be found easily.
-      WriteEvent('E', category_group, name_, id_,
-                 arg_names_, arg_types_, arg_values_, convertable_values_,
-                 flags_);
-      break;
-
-    case TRACE_EVENT_PHASE_INSTANT:
-      // Simulate an instance event with a pair of begin/end events.
-      WriteEvent('B', category_group, name_, id_,
-                 arg_names_, arg_types_, arg_values_, convertable_values_,
-                 flags_);
-      write(g_atrace_fd, "E", 1);
-      break;
-
-    case TRACE_EVENT_PHASE_COUNTER:
-      for (int i = 0; i < kTraceMaxNumArgs && arg_names_[i]; ++i) {
-        DCHECK(arg_types_[i] == TRACE_VALUE_TYPE_INT);
-        std::string out = base::StringPrintf(
-            "C|%d|%s-%s", getpid(), name_, arg_names_[i]);
-        if (flags_ & TRACE_EVENT_FLAG_HAS_ID)
-          StringAppendF(&out, "-%" PRIx64, static_cast<uint64>(id_));
-        StringAppendF(&out, "|%d|%s",
-                      static_cast<int>(arg_values_[i].as_int), category_group);
-        write(g_atrace_fd, out.c_str(), out.size());
-      }
-      break;
-
-    default:
-      // Do nothing.
-      break;
-  }
-}
-
-void TraceLog::AddClockSyncMetadataEvent() {
-  int atrace_fd = open(kATraceMarkerFile, O_WRONLY | O_APPEND);
-  if (atrace_fd == -1) {
-    PLOG(WARNING) << "Couldn't open " << kATraceMarkerFile;
-    return;
-  }
-
-  // Android's kernel trace system has a trace_marker feature: this is a file on
-  // debugfs that takes the written data and pushes it onto the trace
-  // buffer. So, to establish clock sync, we write our monotonic clock into that
-  // trace buffer.
-  TimeTicks now = TimeTicks::NowFromSystemTraceTime();
-  double now_in_seconds = now.ToInternalValue() / 1000000.0;
-  std::string marker = StringPrintf(
-      "trace_event_clock_sync: parent_ts=%f\n", now_in_seconds);
-  if (write(atrace_fd, marker.c_str(), marker.size()) == -1)
-    PLOG(WARNING) << "Couldn't write to " << kATraceMarkerFile;
-  close(atrace_fd);
-}
-
-}  // namespace debug
-}  // namespace base