Revert "Revert "[metric] Add android_monitor_contention metric""

This reverts commit a4855d131c526a0c9bbd122174449141af8d73b0.

Change-Id: I5994610d735642a82565670c941ad150107c5f94
diff --git a/Android.bp b/Android.bp
index 6a54053..e3504bc 100644
--- a/Android.bp
+++ b/Android.bp
@@ -4309,6 +4309,7 @@
         "protos/perfetto/metrics/android/lmk_reason_metric.proto",
         "protos/perfetto/metrics/android/mem_metric.proto",
         "protos/perfetto/metrics/android/mem_unagg_metric.proto",
+        "protos/perfetto/metrics/android/monitor_contention_metric.proto",
         "protos/perfetto/metrics/android/multiuser_metric.proto",
         "protos/perfetto/metrics/android/network_metric.proto",
         "protos/perfetto/metrics/android/other_traces.proto",
@@ -4381,6 +4382,7 @@
         "protos/perfetto/metrics/android/lmk_reason_metric.proto",
         "protos/perfetto/metrics/android/mem_metric.proto",
         "protos/perfetto/metrics/android/mem_unagg_metric.proto",
+        "protos/perfetto/metrics/android/monitor_contention_metric.proto",
         "protos/perfetto/metrics/android/multiuser_metric.proto",
         "protos/perfetto/metrics/android/network_metric.proto",
         "protos/perfetto/metrics/android/other_traces.proto",
@@ -9755,6 +9757,7 @@
         "src/trace_processor/metrics/sql/android/android_lmk_reason.sql",
         "src/trace_processor/metrics/sql/android/android_mem.sql",
         "src/trace_processor/metrics/sql/android/android_mem_unagg.sql",
+        "src/trace_processor/metrics/sql/android/android_monitor_contention.sql",
         "src/trace_processor/metrics/sql/android/android_multiuser.sql",
         "src/trace_processor/metrics/sql/android/android_multiuser_populator.sql",
         "src/trace_processor/metrics/sql/android/android_netperf.sql",
diff --git a/BUILD b/BUILD
index ec1b8f0..e6b1db6 100644
--- a/BUILD
+++ b/BUILD
@@ -1530,6 +1530,7 @@
         "src/trace_processor/metrics/sql/android/android_lmk_reason.sql",
         "src/trace_processor/metrics/sql/android/android_mem.sql",
         "src/trace_processor/metrics/sql/android/android_mem_unagg.sql",
+        "src/trace_processor/metrics/sql/android/android_monitor_contention.sql",
         "src/trace_processor/metrics/sql/android/android_multiuser.sql",
         "src/trace_processor/metrics/sql/android/android_multiuser_populator.sql",
         "src/trace_processor/metrics/sql/android/android_netperf.sql",
@@ -3556,6 +3557,7 @@
         "protos/perfetto/metrics/android/lmk_reason_metric.proto",
         "protos/perfetto/metrics/android/mem_metric.proto",
         "protos/perfetto/metrics/android/mem_unagg_metric.proto",
+        "protos/perfetto/metrics/android/monitor_contention_metric.proto",
         "protos/perfetto/metrics/android/multiuser_metric.proto",
         "protos/perfetto/metrics/android/network_metric.proto",
         "protos/perfetto/metrics/android/other_traces.proto",
diff --git a/protos/perfetto/metrics/android/BUILD.gn b/protos/perfetto/metrics/android/BUILD.gn
index cdce406..2fed17a 100644
--- a/protos/perfetto/metrics/android/BUILD.gn
+++ b/protos/perfetto/metrics/android/BUILD.gn
@@ -45,6 +45,7 @@
     "lmk_reason_metric.proto",
     "mem_metric.proto",
     "mem_unagg_metric.proto",
+    "monitor_contention_metric.proto",
     "multiuser_metric.proto",
     "network_metric.proto",
     "other_traces.proto",
diff --git a/protos/perfetto/metrics/android/monitor_contention_metric.proto b/protos/perfetto/metrics/android/monitor_contention_metric.proto
new file mode 100644
index 0000000..ee2d281
--- /dev/null
+++ b/protos/perfetto/metrics/android/monitor_contention_metric.proto
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto2";
+
+package perfetto.protos;
+
+// This metric provides information about the monitor contention graph in a
+// trace
+message AndroidMonitorContentionMetric {
+  message Node {
+    optional int64 node_parent_id = 1;
+    optional int64 node_id = 2;
+    optional int64 ts = 3;
+    optional int64 dur = 4;
+    optional string blocking_method = 5;
+    optional string blocked_method = 6;
+    optional string short_blocking_method = 7;
+    optional string short_blocked_method = 8;
+    optional string blocking_src = 9;
+    optional string blocked_src = 10;
+    optional uint32 waiter_count = 11;
+    optional string blocked_thread_name = 12;
+    optional string blocking_thread_name = 13;
+    optional string process_name = 14;
+    optional bool is_blocked_thread_main = 15;
+    optional bool is_blocking_thread_main = 16;
+    optional int64 binder_reply_ts = 17;
+    optional uint32 binder_reply_tid = 18;
+  }
+
+  repeated Node node = 1;
+}
diff --git a/protos/perfetto/metrics/metrics.proto b/protos/perfetto/metrics/metrics.proto
index ede0e0a..80122e5 100644
--- a/protos/perfetto/metrics/metrics.proto
+++ b/protos/perfetto/metrics/metrics.proto
@@ -56,6 +56,7 @@
 import "protos/perfetto/metrics/android/android_trusty_workqueues.proto";
 import "protos/perfetto/metrics/android/unsymbolized_frames.proto";
 import "protos/perfetto/metrics/android/binder_metric.proto";
+import "protos/perfetto/metrics/android/monitor_contention_metric.proto";
 
 // Trace processor metadata
 message TraceMetadata {
@@ -236,6 +237,8 @@
   // Blocking calls (e.g. binder calls) for CUJs (important UI transitions).
   optional AndroidBlockingCallsCujMetric android_blocking_calls_cuj_metric = 49;
 
+  optional AndroidMonitorContentionMetric android_monitor_contention = 50;
+
   // Demo extensions.
   extensions 450 to 499;
 
diff --git a/protos/perfetto/metrics/perfetto_merged_metrics.proto b/protos/perfetto/metrics/perfetto_merged_metrics.proto
index d65ef60..2108120 100644
--- a/protos/perfetto/metrics/perfetto_merged_metrics.proto
+++ b/protos/perfetto/metrics/perfetto_merged_metrics.proto
@@ -1158,6 +1158,37 @@
 
 // End of protos/perfetto/metrics/android/mem_unagg_metric.proto
 
+// Begin of protos/perfetto/metrics/android/monitor_contention_metric.proto
+
+// This metric provides information about the monitor contention graph in a
+// trace
+message AndroidMonitorContentionMetric {
+  message Node {
+    optional int64 node_parent_id = 1;
+    optional int64 node_id = 2;
+    optional int64 ts = 3;
+    optional int64 dur = 4;
+    optional string blocking_method = 5;
+    optional string blocked_method = 6;
+    optional string short_blocking_method = 7;
+    optional string short_blocked_method = 8;
+    optional string blocking_src = 9;
+    optional string blocked_src = 10;
+    optional uint32 waiter_count = 11;
+    optional string blocked_thread_name = 12;
+    optional string blocking_thread_name = 13;
+    optional string process_name = 14;
+    optional bool is_blocked_thread_main = 15;
+    optional bool is_blocking_thread_main = 16;
+    optional int64 binder_reply_ts = 17;
+    optional uint32 binder_reply_tid = 18;
+  }
+
+  repeated Node node = 1;
+}
+
+// End of protos/perfetto/metrics/android/monitor_contention_metric.proto
+
 // Begin of protos/perfetto/metrics/android/multiuser_metric.proto
 
 // Metrics for Multiuser events, such as switching users.
@@ -2042,6 +2073,8 @@
   // Blocking calls (e.g. binder calls) for CUJs (important UI transitions).
   optional AndroidBlockingCallsCujMetric android_blocking_calls_cuj_metric = 49;
 
+  optional AndroidMonitorContentionMetric android_monitor_contention = 50;
+
   // Demo extensions.
   extensions 450 to 499;
 
diff --git a/python/perfetto/trace_processor/metrics.descriptor b/python/perfetto/trace_processor/metrics.descriptor
index 098b68c..5bdcbd7 100644
--- a/python/perfetto/trace_processor/metrics.descriptor
+++ b/python/perfetto/trace_processor/metrics.descriptor
Binary files differ
diff --git a/python/perfetto/trace_processor/metrics.descriptor.sha1 b/python/perfetto/trace_processor/metrics.descriptor.sha1
index 3d2e0ce..e350a9a 100644
--- a/python/perfetto/trace_processor/metrics.descriptor.sha1
+++ b/python/perfetto/trace_processor/metrics.descriptor.sha1
@@ -2,5 +2,5 @@
 // SHA1(tools/gen_binary_descriptors)
 // 6886b319e65925c037179e71a803b8473d06dc7d
 // SHA1(protos/perfetto/metrics/metrics.proto)
-// 5bc40b3771af22a3e705d03fa050f582935480b8
+// 5cdfe579a9253cbaea9dcf23dc66388282429c92
   
\ No newline at end of file
diff --git a/src/trace_processor/metrics/sql/android/BUILD.gn b/src/trace_processor/metrics/sql/android/BUILD.gn
index 5fe8985..bf54d44 100644
--- a/src/trace_processor/metrics/sql/android/BUILD.gn
+++ b/src/trace_processor/metrics/sql/android/BUILD.gn
@@ -42,6 +42,7 @@
     "android_lmk_reason.sql",
     "android_mem.sql",
     "android_mem_unagg.sql",
+    "android_monitor_contention.sql",
     "android_multiuser.sql",
     "android_multiuser_populator.sql",
     "android_netperf.sql",
diff --git a/src/trace_processor/metrics/sql/android/android_monitor_contention.sql b/src/trace_processor/metrics/sql/android/android_monitor_contention.sql
new file mode 100644
index 0000000..54056c5
--- /dev/null
+++ b/src/trace_processor/metrics/sql/android/android_monitor_contention.sql
@@ -0,0 +1,47 @@
+--
+-- Copyright 2023 The Android Open Source Project
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     https://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+
+SELECT IMPORT('android.monitor_contention');
+
+DROP VIEW IF EXISTS android_monitor_contention_output;
+CREATE VIEW android_monitor_contention_output AS
+SELECT AndroidMonitorContentionMetric(
+  'node', (
+    SELECT RepeatedField(
+      AndroidMonitorContentionMetric_Node(
+        'node_parent_id', parent_id,
+        'node_id', id,
+        'ts', ts,
+        'dur', dur,
+        'blocking_method', blocking_method,
+        'blocked_method', blocked_method,
+        'short_blocking_method', short_blocking_method,
+        'short_blocked_method', short_blocked_method,
+        'blocking_src', blocking_src,
+        'blocked_src', blocked_src,
+        'waiter_count', waiter_count,
+        'blocking_thread_name', blocking_thread_name,
+        'blocked_thread_name', blocked_thread_name,
+        'process_name', process_name,
+        'is_blocked_thread_main', is_blocked_thread_main,
+        'is_blocking_thread_main', is_blocking_thread_main,
+        'binder_reply_ts', binder_reply_ts,
+        'binder_reply_tid', binder_reply_tid
+      )
+    )
+    FROM android_monitor_contention_chain
+  )
+);
diff --git a/test/trace_processor/diff_tests/android/android_monitor_contention.out b/test/trace_processor/diff_tests/android/android_monitor_contention.out
new file mode 100644
index 0000000..cfd417e
--- /dev/null
+++ b/test/trace_processor/diff_tests/android/android_monitor_contention.out
@@ -0,0 +1,13911 @@
+android_monitor_contention {
+  node {
+    node_id: 3668
+    ts: 143338147030
+    dur: 40376
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "droid.launcher3"
+    process_name: "com.android.launcher3"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 4648
+    ts: 143374024262
+    dur: 50561
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:1977_6"
+    blocked_thread_name: "droid.launcher3"
+    process_name: "com.android.launcher3"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 4650
+    ts: 143374215380
+    dur: 39128
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:1977_6"
+    blocked_thread_name: "droid.launcher3"
+    process_name: "com.android.launcher3"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 4971
+    ts: 143390268000
+    dur: 50641
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:1977_6"
+    blocked_thread_name: "droid.launcher3"
+    process_name: "com.android.launcher3"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 4975
+    ts: 143390512389
+    dur: 39894
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:1977_6"
+    blocked_thread_name: "droid.launcher3"
+    process_name: "com.android.launcher3"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 6867
+    ts: 143463394781
+    dur: 7106332
+    blocking_method: "int com.android.server.wm.ActivityStarter.execute()"
+    blocked_method: "void com.android.server.wm.RootWindowContainer$RankTaskLayersRunnable.run()"
+    short_blocking_method: "com.android.server.wm.ActivityStarter.execute"
+    short_blocked_method: "com.android.server.wm.RootWindowContainer$RankTaskLayersRunnable.run"
+    blocking_src: "ActivityStarter.java:686"
+    blocked_src: "RootWindowContainer.java:3548"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_3"
+    blocked_thread_name: "android.display"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 6875
+    ts: 143464008929
+    dur: 5024822
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_12"
+    blocked_thread_name: "android.io"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 6884
+    ts: 143464297073
+    dur: 6242977
+    blocking_method: "int com.android.server.wm.ActivityStarter.execute()"
+    blocked_method: "void com.android.server.wm.InputMonitor$UpdateInputWindows.run()"
+    short_blocking_method: "com.android.server.wm.ActivityStarter.execute"
+    short_blocked_method: "com.android.server.wm.InputMonitor$UpdateInputWindows.run"
+    blocking_src: "ActivityStarter.java:686"
+    blocked_src: "InputMonitor.java:119"
+    waiter_count: 1
+    blocking_thread_name: "binder:642_3"
+    blocked_thread_name: "android.anim"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 7014
+    ts: 143468726576
+    dur: 37729
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_3"
+    blocked_thread_name: "PowerManagerSer"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 7016
+    ts: 143468802279
+    dur: 38774
+    blocking_method: "void com.android.server.power.PowerManagerService.acquireWakeLockInternal(android.os.IBinder, int, int, java.lang.String, java.lang.String, android.os.WorkSource, java.lang.String, int, int, android.os.IWakeLockCallback)"
+    blocked_method: "void com.android.server.power.PowerManagerService.handleSandman(int)"
+    short_blocking_method: "com.android.server.power.PowerManagerService.acquireWakeLockInternal"
+    short_blocked_method: "com.android.server.power.PowerManagerService.handleSandman"
+    blocking_src: "PowerManagerService.java:1485"
+    blocked_src: "PowerManagerService.java:3197"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_3"
+    blocked_thread_name: "PowerManagerSer"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 7387
+    ts: 143477492062
+    dur: 18115
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_D"
+    blocked_thread_name: "android.ui"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 7391
+    ts: 143477546893
+    dur: 16002
+    blocking_method: "int com.android.server.am.UidObserverController.enqueueUidChange(com.android.server.am.UidObserverController$ChangeRecord, int, int, int, long, int, boolean)"
+    blocked_method: "void com.android.server.am.UidObserverController.dispatchUidsChanged()"
+    short_blocking_method: "com.android.server.am.UidObserverController.enqueueUidChange"
+    short_blocked_method: "com.android.server.am.UidObserverController.dispatchUidsChanged"
+    blocking_src: "UidObserverController.java:100"
+    blocked_src: "UidObserverController.java:191"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_D"
+    blocked_thread_name: "android.ui"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 7407
+    ts: 143478550108
+    dur: 17484
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_D"
+    blocked_thread_name: "OomAdjuster"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 7424
+    ts: 143479806083
+    dur: 18199
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_1"
+    blocked_thread_name: "PackageManager"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 7440
+    ts: 143479869209
+    dur: 14556
+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_1"
+    blocked_thread_name: "android.ui"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
+    node_id: 7583
+    ts: 143483685578
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+    blocked_method: "void com.android.server.wm.InputMonitor$UpdateInputWindows.run()"
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+    blocking_src: "WindowManagerService.java:2267"
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+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
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+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
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+    blocking_src: "MessageQueue.java:554"
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+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
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+  }
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+    blocking_src: "MessageQueue.java:554"
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+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
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+    blocking_src: "MessageQueue.java:554"
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+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
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+  }
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+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
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+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
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+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
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+  }
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+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
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+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
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+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
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+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
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+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
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+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
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+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
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+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
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+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
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+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
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+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.systemui"
+    process_name: "com.android.systemui"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+  node {
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+    blocking_method: "void com.android.server.power.hint.HintManagerService$AppHintSession.reportActualWorkDuration(long[], long[])"
+    blocked_method: "void com.android.server.power.hint.HintManagerService$AppHintSession.reportActualWorkDuration(long[], long[])"
+    short_blocking_method: "com.android.server.power.hint.HintManagerService$AppHintSession.reportActualWorkDuration"
+    short_blocked_method: "com.android.server.power.hint.HintManagerService$AppHintSession.reportActualWorkDuration"
+    blocking_src: "HintManagerService.java:434"
+    blocked_src: "HintManagerService.java:434"
+    waiter_count: 0
+    blocking_thread_name: "binder:642_12"
+    blocked_thread_name: "binder:642_9"
+    process_name: "system_server"
+    is_blocked_thread_main: false
+    is_blocking_thread_main: false
+  }
+  node {
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+    blocking_method: "boolean android.os.MessageQueue.enqueueMessage(android.os.Message, long)"
+    blocked_method: "android.os.Message android.os.MessageQueue.next()"
+    short_blocking_method: "android.os.MessageQueue.enqueueMessage"
+    short_blocked_method: "android.os.MessageQueue.next"
+    blocking_src: "MessageQueue.java:554"
+    blocked_src: "MessageQueue.java:337"
+    waiter_count: 0
+    blocking_thread_name: "RenderThread"
+    blocked_thread_name: "ndroid.settings"
+    process_name: "com.android.settings"
+    is_blocked_thread_main: true
+    is_blocking_thread_main: false
+  }
+}
diff --git a/test/trace_processor/diff_tests/android/tests.py b/test/trace_processor/diff_tests/android/tests.py
index 573bed9..a7ac40b 100644
--- a/test/trace_processor/diff_tests/android/tests.py
+++ b/test/trace_processor/diff_tests/android/tests.py
@@ -274,3 +274,9 @@
         "parent_id","blocking_method","blocked_method","short_blocking_method","short_blocked_method","blocking_src","blocked_src","waiter_count","blocked_utid","blocked_thread_name","blocking_utid","blocking_thread_name","upid","process_name","id","ts","dur","track_id","is_blocked_thread_main","is_blocking_thread_main","binder_reply_id","binder_reply_ts","binder_reply_tid"
         "","void java.lang.Object.wait(long, int)","void android.opengl.GLSurfaceView$GLThread.requestRenderAndNotify(java.lang.Runnable)","java.lang.Object.wait","android.opengl.GLSurfaceView$GLThread.requestRenderAndNotify","Object.java:-2","GLSurfaceView.java:1658",0,313,"droid.gallery3d",1769,"GLThread 33",313,"com.android.gallery3d",289064,155411562446,51012448,2036,1,0,"","",""
       """))
+
+  def test_monitor_contention_metric(self):
+    return DiffTestBlueprint(
+        trace=DataPath('android_monitor_contention_trace.atr'),
+        query=Metric('android_monitor_contention'),
+        out=Path('android_monitor_contention.out'))