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Unified Diff: components/metrics/proto/call_stack_profile.proto

Issue 981143006: Metrics provider for statistical stack profiler (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@lkcr
Patch Set: fix multiline comment Created 5 years, 9 months ago
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Index: components/metrics/proto/call_stack_profile.proto
diff --git a/components/metrics/proto/call_stack_profile.proto b/components/metrics/proto/call_stack_profile.proto
new file mode 100644
index 0000000000000000000000000000000000000000..93fe6e180ea42a8e34bc1b759ee4b916d982af42
--- /dev/null
+++ b/components/metrics/proto/call_stack_profile.proto
@@ -0,0 +1,61 @@
+// 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.
+
+// Call stack sample data for a given profiling session.
+
+syntax = "proto2";
+
+option optimize_for = LITE_RUNTIME;
+
+package metrics;
+
+// Next tag: 5
+message CallStackProfile {
+ // Describes an entry in the callstack.
+ message Entry {
+ // Instruction pointer subtracted by module base.
+ optional uint64 address = 1;
+
+ // Index to the module identifier in |module_ids| of CallStackProfile.
+ optional int32 module_id_index = 2;
+ }
+
+ // A sample consisting of one or more callstacks with the same stack frames
+ // and instruction pointers.
+ message Sample {
+ // The callstack. Sample.entries[0] represents the call on the top of the
+ // stack.
+ repeated Entry entry = 1;
+
+ // Number of times this stack signature occurs.
+ optional int64 count = 2;
+ }
+
+ // Uniquely identifies a module.
+ message ModuleIdentifier {
+ // A hash that uniquely identifies a particular program version with high
+ // probability. This is parsed from headers of the loaded module.
+ // For binaries generated by GNU tools:
+ // Contents of the .note.gnu.build-id field.
+ // On Windows:
+ // GUID + AGE in the debug image headers of a module.
+ optional bytes build_id = 1;
+
+ // MD5Sum Prefix of the module name. This is the same hashing scheme as used
+ // to hash UMA histogram names.
+ optional fixed64 name_md5_prefix = 2;
+ }
+
+ // The callstack and counts.
+ repeated Sample sample = 1;
+
+ // List of module ids found in this sample.
+ repeated ModuleIdentifier module_id = 2;
+
+ // Duration of this profile.
+ optional int32 profile_duration_ms = 3;
+
+ // Time between samples.
+ optional int32 sampling_period_ms = 4;
+}
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