Debugging code for #6169553: Make Phone launch faster

The activity manager now has a tick when launching an app every
500ms, where it collects the current stack traces of the app if
it hasn't finished launching.  These traces are included as part
of dumpstate.

This is only done on non-user builds.

Change-Id: I7f09ea00aab821ac81795f48c9d68fcca65f89fe

1 files changed, 18 insertions, 0 deletions

diff --git a/cmds/dumpstate/dumpstate.c b/cmds/dumpstate/dumpstate.c
index 395c28b..60af415 100644
--- a/cmds/dumpstate/dumpstate.c
+++ b/cmds/dumpstate/dumpstate.c
@@ -108,6 +108,24 @@ static void dumpstate() {
         dump_file("VM TRACES AT LAST ANR", anr_traces_path);
     }
 
+    /* slow traces for slow operations */
+    if (anr_traces_path[0] != 0) {
+        int tail = strlen(anr_traces_path)-1;
+        while (tail > 0 && anr_traces_path[tail] != '/') {
+            tail--;
+        }
+        int i = 0;
+        while (1) {
+            sprintf(anr_traces_path+tail+1, "slow%02d.txt", i);
+            if (stat(anr_traces_path, &st)) {
+                // No traces file at this index, done with the files.
+                break;
+            }
+            dump_file("VM TRACES WHEN SLOW", anr_traces_path);
+            i++;
+        }
+    }
+
     // dump_file("EVENT LOG TAGS", "/etc/event-log-tags");
     run_command("EVENT LOG", 20, "logcat", "-b", "events", "-v", "threadtime", "-d", "*:v", NULL);
     run_command("RADIO LOG", 20, "logcat", "-b", "radio", "-v", "threadtime", "-d", "*:v", NULL);