commit 27c052263c827150b1d371c72abee5974c000ac2
author James Hawkins <jhawkins@google.com> Thu Jan 26 11:55:44 2017 -0800
committer James Hawkins <jhawkins@google.com> Fri Jan 27 08:26:14 2017 -0800
tree f4e7f8f94db29eb92f98ac3cd3a27d868c833871
parent fc267f865e1475030f777a3640bd1cf46dc766b0

boottime/init: Report ro.boottime.init* properties in milliseconds.

* Nanosecond precision ended up being harder to grok.
* This change modifies the Timer class to have duration_ms instead of
duration_ns.

Bug: 34466121
Test: adb logcat | grep bootstat
Change-Id: Ibd1c27dc3cb29d838a956e342281b2fb98d752a6

init/init.cpp

diff --git a/init/init.cpp b/init/init.cpp
index 1ce3c35..e7772e7 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -178,7 +178,7 @@
         panic();
     }
 
-    property_set("ro.boottime.init.cold_boot_wait", std::to_string(t.duration_ns()).c_str());
+    property_set("ro.boottime.init.cold_boot_wait", std::to_string(t.duration_ms()).c_str());
     return 0;
 }
 
@@ -576,7 +576,7 @@
         }
 
         // init's first stage can't set properties, so pass the time to the second stage.
-        setenv("INIT_SELINUX_TOOK", std::to_string(t.duration_ns()).c_str(), 1);
+        setenv("INIT_SELINUX_TOOK", std::to_string(t.duration_ms()).c_str(), 1);
     } else {
         selinux_init_all_handles();
     }
@@ -757,8 +757,9 @@
 
         setenv("INIT_SECOND_STAGE", "true", 1);
 
-        uint64_t start_ns = start_time.time_since_epoch().count();
-        setenv("INIT_STARTED_AT", StringPrintf("%" PRIu64, start_ns).c_str(), 1);
+        static constexpr uint32_t kNanosecondsPerMillisecond = 1e6;
+        uint64_t start_ms = start_time.time_since_epoch().count() / kNanosecondsPerMillisecond;
+        setenv("INIT_STARTED_AT", StringPrintf("%" PRIu64, start_ms).c_str(), 1);
 
         char* path = argv[0];
         char* args[] = { path, nullptr };