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Unified Diff: base/trace_event/process_memory_dump.h

Issue 1647803004: Move base to DEPS (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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Index: base/trace_event/process_memory_dump.h
diff --git a/base/trace_event/process_memory_dump.h b/base/trace_event/process_memory_dump.h
deleted file mode 100644
index 3b71a2c41ae0409bdf8fe05c19993ec740c0aa8a..0000000000000000000000000000000000000000
--- a/base/trace_event/process_memory_dump.h
+++ /dev/null
@@ -1,161 +0,0 @@
-// Copyright 2015 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.
-
-#ifndef BASE_TRACE_EVENT_PROCESS_MEMORY_DUMP_H_
-#define BASE_TRACE_EVENT_PROCESS_MEMORY_DUMP_H_
-
-#include <vector>
-
-#include "base/base_export.h"
-#include "base/containers/hash_tables.h"
-#include "base/containers/small_map.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_vector.h"
-#include "base/trace_event/memory_allocator_dump.h"
-#include "base/trace_event/memory_allocator_dump_guid.h"
-#include "base/trace_event/memory_dump_session_state.h"
-#include "base/trace_event/process_memory_maps.h"
-#include "base/trace_event/process_memory_totals.h"
-
-namespace base {
-namespace trace_event {
-
-class ConvertableToTraceFormat;
-class MemoryDumpManager;
-class MemoryDumpSessionState;
-
-// ProcessMemoryDump is as a strongly typed container which enforces the data
-// model for each memory dump and holds the dumps produced by the
-// MemoryDumpProvider(s) for a specific process.
-// At trace generation time (i.e. when AsValue() is called), ProcessMemoryDump
-// will compose a key-value dictionary of the various dumps obtained at trace
-// dump point time.
-class BASE_EXPORT ProcessMemoryDump {
- public:
- struct MemoryAllocatorDumpEdge {
- MemoryAllocatorDumpGuid source;
- MemoryAllocatorDumpGuid target;
- int importance;
- const char* type;
- };
-
- // Maps allocator dumps absolute names (allocator_name/heap/subheap) to
- // MemoryAllocatorDump instances.
- using AllocatorDumpsMap =
- SmallMap<hash_map<std::string, MemoryAllocatorDump*>>;
-
- ProcessMemoryDump(const scoped_refptr<MemoryDumpSessionState>& session_state);
- ~ProcessMemoryDump();
-
- // Creates a new MemoryAllocatorDump with the given name and returns the
- // empty object back to the caller.
- // Arguments:
- // absolute_name: a name that uniquely identifies allocator dumps produced
- // by this provider. It is possible to specify nesting by using a
- // path-like string (e.g., v8/isolate1/heap1, v8/isolate1/heap2).
- // Leading or trailing slashes are not allowed.
- // guid: an optional identifier, unique among all processes within the
- // scope of a global dump. This is only relevant when using
- // AddOwnershipEdge() to express memory sharing. If omitted,
- // it will be automatically generated.
- // ProcessMemoryDump handles the memory ownership of its MemoryAllocatorDumps.
- MemoryAllocatorDump* CreateAllocatorDump(const std::string& absolute_name);
- MemoryAllocatorDump* CreateAllocatorDump(const std::string& absolute_name,
- const MemoryAllocatorDumpGuid& guid);
-
- // Looks up a MemoryAllocatorDump given its allocator and heap names, or
- // nullptr if not found.
- MemoryAllocatorDump* GetAllocatorDump(const std::string& absolute_name) const;
-
- // Creates a shared MemoryAllocatorDump, to express cross-process sharing.
- // Shared allocator dumps are allowed to have duplicate guids within the
- // global scope, in order to reference the same dump from multiple processes.
- // See the design doc goo.gl/keU6Bf for reference usage patterns.
- MemoryAllocatorDump* CreateSharedGlobalAllocatorDump(
- const MemoryAllocatorDumpGuid& guid);
-
- // Looks up a shared MemoryAllocatorDump given its guid.
- MemoryAllocatorDump* GetSharedGlobalAllocatorDump(
- const MemoryAllocatorDumpGuid& guid) const;
-
- // Returns the map of the MemoryAllocatorDumps added to this dump.
- const AllocatorDumpsMap& allocator_dumps() const { return allocator_dumps_; }
-
- // Adds an ownership relationship between two MemoryAllocatorDump(s) with the
- // semantics: |source| owns |target|, and has the effect of attributing
- // the memory usage of |target| to |source|. |importance| is optional and
- // relevant only for the cases of co-ownership, where it acts as a z-index:
- // the owner with the highest importance will be attributed |target|'s memory.
- void AddOwnershipEdge(const MemoryAllocatorDumpGuid& source,
- const MemoryAllocatorDumpGuid& target,
- int importance);
- void AddOwnershipEdge(const MemoryAllocatorDumpGuid& source,
- const MemoryAllocatorDumpGuid& target);
-
- const std::vector<MemoryAllocatorDumpEdge>& allocator_dumps_edges() const {
- return allocator_dumps_edges_;
- }
-
- // Utility method to add a suballocation relationship with the following
- // semantics: |source| is suballocated from |target_node_name|.
- // This creates a child node of |target_node_name| and adds an ownership edge
- // between |source| and the new child node. As a result, the UI will not
- // account the memory of |source| in the target node.
- void AddSuballocation(const MemoryAllocatorDumpGuid& source,
- const std::string& target_node_name);
-
- const scoped_refptr<MemoryDumpSessionState>& session_state() const {
- return session_state_;
- }
-
- // Removes all the MemoryAllocatorDump(s) contained in this instance. This
- // ProcessMemoryDump can be safely reused as if it was new once this returns.
- void Clear();
-
- // Merges all MemoryAllocatorDump(s) contained in |other| inside this
- // ProcessMemoryDump, transferring their ownership to this instance.
- // |other| will be an empty ProcessMemoryDump after this method returns.
- // This is to allow dump providers to pre-populate ProcessMemoryDump instances
- // and later move their contents into the ProcessMemoryDump passed as argument
- // of the MemoryDumpProvider::OnMemoryDump(ProcessMemoryDump*) callback.
- void TakeAllDumpsFrom(ProcessMemoryDump* other);
-
- // Called at trace generation time to populate the TracedValue.
- void AsValueInto(TracedValue* value) const;
-
- ProcessMemoryTotals* process_totals() { return &process_totals_; }
- bool has_process_totals() const { return has_process_totals_; }
- void set_has_process_totals() { has_process_totals_ = true; }
-
- ProcessMemoryMaps* process_mmaps() { return &process_mmaps_; }
- bool has_process_mmaps() const { return has_process_mmaps_; }
- void set_has_process_mmaps() { has_process_mmaps_ = true; }
-
- private:
- void AddAllocatorDumpInternal(MemoryAllocatorDump* mad);
-
- ProcessMemoryTotals process_totals_;
- bool has_process_totals_;
-
- ProcessMemoryMaps process_mmaps_;
- bool has_process_mmaps_;
-
- AllocatorDumpsMap allocator_dumps_;
-
- // ProcessMemoryDump handles the memory ownership of all its belongings.
- ScopedVector<MemoryAllocatorDump> allocator_dumps_storage_;
-
- // State shared among all PMDs instances created in a given trace session.
- scoped_refptr<MemoryDumpSessionState> session_state_;
-
- // Keeps track of relationships between MemoryAllocatorDump(s).
- std::vector<MemoryAllocatorDumpEdge> allocator_dumps_edges_;
-
- DISALLOW_COPY_AND_ASSIGN(ProcessMemoryDump);
-};
-
-} // namespace trace_event
-} // namespace base
-
-#endif // BASE_TRACE_EVENT_PROCESS_MEMORY_DUMP_H_
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