Special-case Timeline.{start,finish}Sync for Fuchsia

runtime/vm/timeline_macos.cc

Index: runtime/vm/timeline_macos.cc
diff --git a/runtime/vm/timeline_macos.cc b/runtime/vm/timeline_macos.cc
new file mode 100644
index 0000000000000000000000000000000000000000..18c13118d1d603e281d844386108c450deae5eaf
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+++ b/runtime/vm/timeline_macos.cc
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+// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#include "platform/globals.h"
+#if defined(HOST_OS_MACOS) && !defined(PRODUCT)
+
+#include "vm/timeline.h"
+
+namespace dart {
+
+TimelineEventPlatformRecorder::TimelineEventPlatformRecorder(intptr_t capacity)
+    : TimelineEventFixedBufferRecorder(capacity) {
+  OS::PrintErr(
+      "Warning: The systrace timeline recorder is equivalent to the"
+      "ring recorder on this platform.");
+}
+
+TimelineEventPlatformRecorder::~TimelineEventPlatformRecorder() {}
+
+TimelineEventPlatformRecorder*
+TimelineEventPlatformRecorder::CreatePlatformRecorder(intptr_t capacity) {
+  return new TimelineEventPlatformRecorder(capacity);
+}
+
+const char* TimelineEventPlatformRecorder::name() const {
+  return "Systrace";
+}
+
+TimelineEventBlock* TimelineEventPlatformRecorder::GetNewBlockLocked() {
+  // TODO(johnmccutchan): This function should only hand out blocks
+  // which have been marked as finished.
+  if (block_cursor_ == num_blocks_) {
+    block_cursor_ = 0;
+  }
+  TimelineEventBlock* block = blocks_[block_cursor_++];
+  block->Reset();
+  block->Open();
+  return block;
+}
+
+void TimelineEventPlatformRecorder::CompleteEvent(TimelineEvent* event) {
+  if (event == NULL) {
+    return;
+  }
+  ThreadBlockCompleteEvent(event);
+}
+
+void DartTimelineEventHelpers::ReportTaskEvent(Thread* thread,
+                                               Zone* zone,
+                                               TimelineEvent* event,
+                                               int64_t start,
+                                               int64_t id,
+                                               const char* phase,
+                                               const char* category,
+                                               const char* name,
+                                               const char* args) {
+  DartCommonTimelineEventHelpers::ReportTaskEvent(
+      thread, zone, event, start, id, phase, category, name, args);
+}
+
+void DartTimelineEventHelpers::ReportCompleteEvent(Thread* thread,
+                                                   Zone* zone,
+                                                   TimelineEvent* event,
+                                                   int64_t start,
+                                                   int64_t start_cpu,
+                                                   const char* category,
+                                                   const char* name,
+                                                   const char* args) {
+  DartCommonTimelineEventHelpers::ReportCompleteEvent(
+      thread, zone, event, start, start_cpu, category, name, args);
+}
+
+void DartTimelineEventHelpers::ReportInstantEvent(Thread* thread,
+                                                  Zone* zone,
+                                                  TimelineEvent* event,
+                                                  int64_t start,
+                                                  const char* category,
+                                                  const char* name,
+                                                  const char* args) {
+  DartCommonTimelineEventHelpers::ReportInstantEvent(thread, zone, event, start,
+                                                     category, name, args);
+}
+
+}  // namespace dart
+
+#endif  // defined(HOST_OS_MACOS) && !defined(PRODUCT)