startop: app_startup script fixes for youtube/chrome

Fix remote_pkill function to work on multiple pids,
this was breaking chrome (which has 3 pids).

Fix activity inference to the "$pkg/$activity"
pattern where previously it could accidentally parse
the wrong token.

Fix app launching to handle activities with '$' in
the name which adb shell treated as a variable.

Test: manual
Change-Id: Ifc9a72f1b9bb5e1416c7602f27f4614efd003849

startop/scripts/app_startup/force_compiler_filter

@@ -100,36 +100,6 @@ parse_arguments() {
   fi
 }
 
-get_activity_name() {
-  local package="$1"
-  local action_key="android.intent.action.MAIN:"
-
-  local activity_line="$(adb shell cmd package query-activities --brief -a android.intent.action.MAIN -c android.intent.category.LAUNCHER | grep "$package")"
-  verbose_print $activity_line
-  IFS="/" read -a array <<< "$activity_line"
-  local activity_name="${array[1]}"
-  echo "$activity_name"
-  #adb shell am start "$package/$activity_name"
-}
-
-remote_pidof() {
-  local procname="$1"
-  adb shell ps | grep "$procname" | awk '{print $2;}'
-}
-
-remote_pkill() {
-  local procname="$1"
-  shift
-
-  local the_pids=$(remote_pidof "$procname")
-  local pid
-
-  for pid in $the_pids; do
-    verbose_print adb shell kill "$@" "$pid"
-    adb shell kill "$@" "$pid"
-  done
-}
-
 force_package_compilation() {
   local arg_compiler_filter="$1"
   local arg_package="$2"
@@ -150,13 +120,13 @@ main() {
     # screen needs to be unlocked in order to run an app
     "$DIR"/unlock_screen
 
-    am_output="$(adb shell am start -S -W "$package"/"$activity")"
+    local output=$("$DIR"/launch_application "$package" "$activity")
     if [[ $? -ne 0 ]]; then
-      echo "am start failed" >&2
+      echo "launching application failed" >&2
       exit 1
     fi
 
-    verbose_print "$am_output"
+    verbose_print "$output"
     # give some time for app startup to complete.
     # this is supposed to be an upper bound for measuring startup time.
     sleep "$wait_time"

startop/scripts/app_startup/launch_application

@@ -20,6 +20,12 @@ source "$DIR/lib/common"
 launch_application() {
   local package="$1"
   local activity="$2"
+
+  # if there's any $s inside of the activity name, it needs to be escaped to \$.
+  # example '.app.honeycomb.Shell$HomeActivity'
+  # if the $ is not escaped, adb shell will try to evaluate $HomeActivity to a variable.
+  activity=${activity//\$/\\$}
+
   local am_output="$(adb shell am start -S -W "$package"/"$activity")"
   verbose_print adb shell am start -S -W "$package"/"$activity"
   if [[ $? -ne 0 ]]; then

startop/scripts/app_startup/lib/common

@@ -12,3 +12,42 @@ verbose_print() {
     echo "$@" >&2
   fi
 }
+
+remote_pidof() {
+  local procname="$1"
+  adb shell ps | grep "$procname" | awk '{print $2;}'
+}
+
+remote_pkill() {
+  local procname="$1"
+  shift
+
+  local the_pids=$(remote_pidof "$procname")
+  local pid
+
+  for pid in $the_pids; do
+    verbose_print adb shell kill "$@" "$pid"
+    adb shell kill "$@" "$pid"
+  done
+}
+
+get_activity_name() {
+  local package="$1"
+  local action_key="android.intent.action.MAIN:"
+
+  # Example query-activities output being parsed:
+  #
+  #  Activity #14:
+  #    priority=0 preferredOrder=0 match=0x108000 specificIndex=-1 isDefault=true
+  #    com.google.android.videos/com.google.android.youtube.videos.EntryPoint
+  #  Activity #15:
+  #    priority=0 preferredOrder=0 match=0x108000 specificIndex=-1 isDefault=true
+  #    com.google.android.youtube/.app.honeycomb.Shell$HomeActivity
+
+  # Given package 'com.google.android.youtube' return '.app.honeycomb.Shell$HomeActivity'
+
+  local activity_line="$(adb shell cmd package query-activities --brief -a android.intent.action.MAIN -c android.intent.category.LAUNCHER | grep "$package/")"
+  IFS="/" read -a array <<< "$activity_line"
+  local activity_name="${array[1]}"
+  echo "$activity_name"
+}

startop/scripts/app_startup/run_app_with_prefetch

@@ -111,18 +111,6 @@ echo_to_output_file() {
   echo "$@"
 }
 
-get_activity_name() {
-  local package="$1"
-  local action_key="android.intent.action.MAIN:"
-
-  local activity_line="$(adb shell cmd package query-activities --brief -a android.intent.action.MAIN -c android.intent.category.LAUNCHER | grep "$package")"
-  #echo $activity_line
-  IFS="/" read -a array <<< "$activity_line"
-  local activity_name="${array[1]}"
-  echo "$activity_name"
-  #adb shell am start "$package/$activity_name"
-}
-
 find_package_path() {
   local pkg="$1"
 
@@ -133,11 +121,6 @@ find_package_path() {
   echo "$res"
 }
 
-remote_pkill() {
-  local what="$1"
-  adb shell "for i in $(pid $what); do kill \$i; done"
-}
-
 # Main entry point
 if [[ $# -eq 0 ]]; then
   usage