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..86ae505b907957befbfd91d706c044767f60ea2d |
--- /dev/null |
+++ b/components/metrics/proto/call_stack_profile.proto |
@@ -0,0 +1,62 @@ |
+// 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 { |
+ |
Ilya Sherman
2015/03/19 00:10:20
nit: Please omit this newline.
Mike Wittman
2015/03/19 00:56:58
Done.
|
+ // 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 CallStackEntry entry = 1; |
+ |
+ // Number of times this stack signature occurs. |
+ optional int64 count = 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; |
+} |
+ |
+// Describes an entry in the callstack. |
+message CallStackEntry { |
+ // 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; |
+} |
+ |
+// 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; |
+} |