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| author | Louis Chang <louischang@google.com> | 2019-12-05 16:22:57 +0800 |
|---|---|---|
| committer | Louis Chang <louischang@google.com> | 2020-03-13 14:51:29 +0800 |
| commit | 59e85c25a65b9d89855de9366fef499003a65e29 (patch) | |
| tree | 24551c9fe212762ead8e0c681830cfd3ed99f000 /core/java | |
| parent | f489f1994fb5fa9594e86dedc172b6501cd72982 (diff) | |
Add warning message when entering loop twice
The messages in queue could be executed before current
message completed.
Bug: 140599188
Test: calling Looper.loop() twice
Change-Id: I1a4628606ed974e7a6a76b2832044959a9261bb9
Diffstat (limited to 'core/java')
| -rw-r--r-- | core/java/android/os/Looper.java | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/core/java/android/os/Looper.java b/core/java/android/os/Looper.java index b478dbe2555d..a7e326378228 100644 --- a/core/java/android/os/Looper.java +++ b/core/java/android/os/Looper.java @@ -77,6 +77,7 @@ public final class Looper { @UnsupportedAppUsage final MessageQueue mQueue; final Thread mThread; + private boolean mInLoop; @UnsupportedAppUsage private Printer mLogging; @@ -155,6 +156,12 @@ public final class Looper { if (me == null) { throw new RuntimeException("No Looper; Looper.prepare() wasn't called on this thread."); } + if (me.mInLoop) { + Slog.w(TAG, "Loop again would have the queued messages be executed" + + " before this one completed."); + } + + me.mInLoop = true; final MessageQueue queue = me.mQueue; // Make sure the identity of this thread is that of the local process, |