Add atom for per-process system ion heap size

The pulling code will be added in the next commit.

Bug: 130526489
Test: statsd_testdrive
Change-Id: I0fea4b6a7a8dbbdc574fb342c1e07aa0165bf797
(cherry picked from commit 77987ed47f)

cmds/statsd/src/atoms.proto

@@ -322,7 +322,7 @@ message Atom {
     }
 
     // Pulled events will start at field 10000.
-    // Next: 10059
+    // Next: 10062
     oneof pulled {
         WifiBytesTransfer wifi_bytes_transfer = 10000;
         WifiBytesTransferByFgBg wifi_bytes_transfer_by_fg_bg = 10001;
@@ -385,6 +385,7 @@ message Atom {
         FaceSettings face_settings = 10058;
         CoolingDevice cooling_device = 10059;
         AppOps app_ops = 10060;
+        ProcessSystemIonHeapSize process_system_ion_heap_size = 10061;
     }
 
     // DO NOT USE field numbers above 100,000 in AOSP.
@@ -6369,6 +6370,28 @@ message SystemIonHeapSize {
     optional int64 size_in_bytes = 1;
 }
 
+/*
+ * Logs the per-process size of the system ion heap.
+ *
+ * Pulled from StatsCompanionService.
+ */
+message ProcessSystemIonHeapSize {
+    // The uid if available. -1 means not available.
+    optional int32 uid = 1 [(is_uid) = true];
+
+    // The process name (from /proc/PID/cmdline).
+    optional string process_name = 2;
+
+    // Sum of sizes of all allocations.
+    optional int32 total_size_in_kilobytes = 3;
+
+    // Number of allocations.
+    optional int32 allocation_count = 4;
+
+    // Size of the largest allocation.
+    optional int32 max_size_in_kilobytes = 5;
+}
+
 /**
  * Push network stack events.
  *

cmds/statsd/src/external/StatsPullerManager.cpp

@@ -156,6 +156,9 @@ std::map<int, PullAtomInfo> StatsPullerManager::kAllPullAtomInfo = {
         // system_ion_heap_size
         {android::util::SYSTEM_ION_HEAP_SIZE,
          {.puller = new StatsCompanionServicePuller(android::util::SYSTEM_ION_HEAP_SIZE)}},
+        // process_system_ion_heap_size
+        {android::util::PROCESS_SYSTEM_ION_HEAP_SIZE,
+         {.puller = new StatsCompanionServicePuller(android::util::PROCESS_SYSTEM_ION_HEAP_SIZE)}},
         // temperature
         {android::util::TEMPERATURE,
          {.puller = new StatsCompanionServicePuller(android::util::TEMPERATURE)}},

services/core/java/com/android/server/stats/StatsCompanionService.java

@@ -1271,6 +1271,12 @@ public class StatsCompanionService extends IStatsCompanionService.Stub {
         pulledData.add(e);
     }
 
+    private void pullProcessSystemIonHeapSize(
+            int tagId, long elapsedNanos, long wallClockNanos,
+            List<StatsLogEventWrapper> pulledData) {
+        // TODO(b/130526489): Read from debugfs.
+    }
+
     private void pullBinderCallsStats(
             int tagId, long elapsedNanos, long wallClockNanos,
             List<StatsLogEventWrapper> pulledData) {
@@ -2333,6 +2339,10 @@ public class StatsCompanionService extends IStatsCompanionService.Stub {
                 pullSystemIonHeapSize(tagId, elapsedNanos, wallClockNanos, ret);
                 break;
             }
+            case StatsLog.PROCESS_SYSTEM_ION_HEAP_SIZE: {
+                pullProcessSystemIonHeapSize(tagId, elapsedNanos, wallClockNanos, ret);
+                break;
+            }
             case StatsLog.BINDER_CALLS: {
                 pullBinderCallsStats(tagId, elapsedNanos, wallClockNanos, ret);
                 break;