Instrument ContextCacheController::OnIdle for postmortem reports

gpu/command_buffer/client/gles2_implementation.cc

 // 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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 #include <GLES3/gl3.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <algorithm>
 #include <map>
 #include <set>
 #include <sstream>
 #include <string>
 #include "base/atomic_sequence_num.h"
 #include "base/bits.h"
 #include "base/compiler_specific.h"
+#include "base/debug/activity_tracker.h"
 #include "base/numerics/safe_math.h"
 #include "base/strings/string_split.h"
 #include "base/strings/stringprintf.h"
 #include "base/sys_info.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/memory_allocator_dump.h"
 #include "base/trace_event/memory_dump_manager.h"
 #include "base/trace_event/process_memory_dump.h"
 #include "base/trace_event/trace_event.h"
 #include "gpu/command_buffer/client/buffer_tracker.h"
@@ skipping 379 matching lines @@
                  callback));
 }
 
 void GLES2Implementation::SetAggressivelyFreeResources(
     bool aggressively_free_resources) {
   TRACE_EVENT1("gpu", "GLES2Implementation::SetAggressivelyFreeResources",
                "aggressively_free_resources", aggressively_free_resources);
   aggressively_free_resources_ = aggressively_free_resources;
 
   if (aggressively_free_resources_ && helper_->HaveRingBuffer()) {
+    // TODO(manzagop): remove ScopedActivity once crbug.com/703342 is fixed.
+    base::debug::ScopedActivity activity_flush(0, 0,

[bcwhite, 2017/03/21 12:34:38]

Do you want an ID for the second parameter to distinguish all these during
analysis?  See example in activity_tracker.h, around line 1200.

[manzagop (departed), 2017/03/21 14:00:23]

Done. Here and below.

+                                               aggressively_free_resources);
+
     // Ensure that we clean up as much cache memory as possible and fully flush.
     FlushDriverCachesCHROMIUM();
 
     // Flush will delete transfer buffer resources if
     // |aggressively_free_resources_| is true.
     Flush();
   } else {
+    // TODO(manzagop): remove ScopedActivity once crbug.com/703342 is fixed.
+    base::debug::ScopedActivity activity_shallow_flush(
+        0, 0, aggressively_free_resources);
     ShallowFlushCHROMIUM();
   }
 }
 
 bool GLES2Implementation::OnMemoryDump(
     const base::trace_event::MemoryDumpArgs& args,
     base::trace_event::ProcessMemoryDump* pmd) {
   using base::trace_event::MemoryAllocatorDump;
   using base::trace_event::MemoryDumpLevelOfDetail;
 
@@ skipping 6628 matching lines @@
   CheckGLError();
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/client/gles2_implementation_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu