Use sigqueue instead of pthread_sigqueue

pthread_sigqueue is a nonstandard extension that is not present in
musl libc.  art_sigchain_test is single threaded, so there is no
need to specifically queue the signal to the current thread, use
sigqueue instead.

Bug: 190084016
Test: out/host/linux-x86/nativetest64/art_sigchain_tests/art_sigchain_tests
Change-Id: Ie2c975736b99fd535f1000969f94859f25ae6de7

1 files changed, 6 insertions, 2 deletions

diff --git a/sigchainlib/sigchain_test.cc b/sigchainlib/sigchain_test.cc
index d879f5ac85..6af38becfa 100644
--- a/sigchainlib/sigchain_test.cc
+++ b/sigchainlib/sigchain_test.cc
@@ -75,13 +75,17 @@ class SigchainTest : public ::testing::Test {
   void RaiseHandled() {
       sigval value;
       value.sival_ptr = &value;
-      pthread_sigqueue(pthread_self(), SIGSEGV, value);
+      // pthread_sigqueue would guarantee the signal is delivered to this
+      // thread, but it is a nonstandard extension and does not exist in
+      // musl.  Gtest is single threaded, and these tests don't create any
+      // threads, so sigqueue can be used and will deliver to this thread.
+      sigqueue(getpid(), SIGSEGV, value);
   }
 
   void RaiseUnhandled() {
       sigval value;
       value.sival_ptr = nullptr;
-      pthread_sigqueue(pthread_self(), SIGSEGV, value);
+      sigqueue(getpid(), SIGSEGV, value);
   }
 };