Limit threads in pthread_leak#detach for low power devices.

This patch decreases created threads to 90 (instead of 100)
on devices with 2 cores CPU. This test can fail with timeout
on such devices.

Bug: b/129924384
Test: Run CtsBionic module on 2 core device with command
	"run cts -m CtsBionicTestCases"

Change-Id: Ic770006a324748d7d6dfbe8d4fb301e21e494ff9
Signed-off-by: Dmytro Chystiakov <dmytro.chystiakov@intel.com>
(cherry picked from commit a3392336296a9306e740ca59e80d95b780cc5fef)

1 files changed, 9 insertions, 4 deletions

diff --git a/tests/leak_test.cpp b/tests/leak_test.cpp
index 1fa9e564d..600520959 100644
--- a/tests/leak_test.cpp
+++ b/tests/leak_test.cpp
@@ -124,17 +124,22 @@ TEST(pthread_leak, join) {
 // http://b/36045112
 TEST(pthread_leak, detach) {
   LeakChecker lc;
+  constexpr int kThreadCount = 100;
 
-  for (size_t pass = 0; pass < 2; ++pass) {
-    constexpr int kThreadCount = 100;
+  // Devices with low power cores/low number of cores can not finish test in time hence decreasing
+  // threads count to 90.
+  // http://b/129924384.
+  int threads_count = (sysconf(_SC_NPROCESSORS_CONF) > 2) ? kThreadCount : (kThreadCount - 10);
+
+  for (size_t pass = 0; pass < 1; ++pass) {
     struct thread_data { pthread_barrier_t* barrier; pid_t* tid; } threads[kThreadCount] = {};
 
     pthread_barrier_t barrier;
-    ASSERT_EQ(pthread_barrier_init(&barrier, nullptr, kThreadCount + 1), 0);
+    ASSERT_EQ(pthread_barrier_init(&barrier, nullptr, threads_count + 1), 0);
 
     // Start child threads.
     pid_t tids[kThreadCount];
-    for (int i = 0; i < kThreadCount; ++i) {
+    for (int i = 0; i < threads_count; ++i) {
       threads[i] = {&barrier, &tids[i]};
       const auto thread_function = +[](void* ptr) -> void* {
         thread_data* data = static_cast<thread_data*>(ptr);