tree a4ee8950d9684754dcb85c00f415068262ac04f9
parent c6c17ac1e8c7072d6744a6476f4cedb95be8d2ea
author Josh Gao <jmgao@google.com> 1565733654 -0700
committer Josh Gao <jmgao@google.com> 1565738019 -0700

leak_test: use tgkill to check if threads are alive.

If one of our threads exits and a new process shows up with the same
tid, we would previously loop until that process exits, leading to
flakiness in tests.

Also fix use of uninitialized memory that happens when threads_count !=
kThreadCount.

Bug: http://b/139315254
Test: /data/nativetest/bionic-unit-tests/bionic-unit-tests --gtest_filter="pthread_leak.detach" on cuttlefish
Change-Id: I2aad7f3f105aeba87c3929bfce53ef08e1484b2d