libhwui: Use wc instead of du to monitor file write
du returns the disk space a file occupies, which isn't guaranteed to be
0 even if the file is empty on all file systems. Use "wc -c" instead to
obtain the file size.
Bug: 184878226
Test: The script waits for the file to have content on file system that
uses disk space to store empty files.
Test: Skia capture still works for Pixel.
Change-Id: Ib5f75b6712b476fc521a531fba029f91f4b281b5
diff --git a/libs/hwui/tests/scripts/skp-capture.sh b/libs/hwui/tests/scripts/skp-capture.sh
index 4b46fbf..0749a8d 100755
--- a/libs/hwui/tests/scripts/skp-capture.sh
+++ b/libs/hwui/tests/scripts/skp-capture.sh
@@ -76,8 +76,8 @@
# so we continue to show the "waiting for app interaction" message as long as the app still requires
# interaction to draw more frames.
adb_test_file_nonzero() {
- # grab first byte of `du` output
- X="$(adb shell "du \"$1\" 2> /dev/null | dd bs=1 count=1 2> /dev/null")"
+ # grab first byte of `wc -c` output
+ X="$(adb shell "wc -c \"$1\" 2> /dev/null | dd bs=1 count=1 2> /dev/null")"
test "$X" && test "$X" -ne 0
}
timeout=$(( $(date +%s) + $phase1_timeout_seconds))