SWDEV-389689 - Rework oversubscription test to use threads instead of process. Also consider system memory when oversubscribing (#317)

Change-Id: If063552e9e2815f07e944259237310f6fef37ad5

[ROCm/hip-tests commit: 329a350ec0]

projects/hip-tests/catch/include/hip_test_process.hh

@@ -31,6 +31,8 @@ THE SOFTWARE.
 #include <random>
 #include <fstream>
 #include <streambuf>
+#include <thread>
+#include <future>
 
 namespace hip {
 /*
@@ -46,6 +48,7 @@ class SpawnProc {
   std::string exeName;
   std::string resultStr;
   std::string tmpFileName;
+  std::future<int> ret_from_run;
   bool captureOutput;
 
   std::string getRandomString(size_t len = 6) {
@@ -68,7 +71,7 @@ class SpawnProc {
     exeName = dir.string();
     // On Windows, fs::exists returns false without extension.
     if (TestContext::get().isWindows()) {
-      if(fs::path(exeName).extension().empty()) {
+      if (fs::path(exeName).extension().empty()) {
         exeName += ".exe";
       }
     }
@@ -112,6 +115,15 @@ class SpawnProc {
 #endif
   }
 
+  void run_async(std::string commandLineArgs = "") {
+    ret_from_run = std::async(std::launch::async, &hip::SpawnProc::run, this, commandLineArgs);
+  }
+
+  int wait() {
+    ret_from_run.wait();
+    return ret_from_run.get();
+  }
+
   std::string getOutput() { return resultStr; }
 };
 }  // namespace hip