CTest: Rename PROCESSES test property to RESOURCE_GROUPS

The `PROCESSES` test property name added for CMake 3.16 is too close to
the existing `PROCESSORS` test property.  Furthermore, the property in
principle specifies groups of resources organized in a way that is
meaningful to a particular test.  The groups may often correspond to
processes but they could have other meanings.  Since the property name
`PROCESSES` has not been in a final 3.16 release yet, simply rename it
to `RESOURCE_GROUPS`.

Fixes: #19914

1 files changed, 3 insertions, 3 deletions

diff --git a/Source/CTest/cmCTestRunTest.cxx b/Source/CTest/cmCTestRunTest.cxx
index 7f7f736..91eeb71 100644
--- a/Source/CTest/cmCTestRunTest.cxx
+++ b/Source/CTest/cmCTestRunTest.cxx
@@ -693,7 +693,7 @@ bool cmCTestRunTest::ForkProcess(cmDuration testTimeOut, bool explicitTimeout,
   if (this->UseAllocatedHardware) {
     this->SetupHardwareEnvironment();
   } else {
-    cmSystemTools::UnsetEnv("CTEST_PROCESS_COUNT");
+    cmSystemTools::UnsetEnv("CTEST_RESOURCE_GROUP_COUNT");
   }
 
   return this->TestProcess->StartProcess(this->MultiTestHandler.Loop,
@@ -702,13 +702,13 @@ bool cmCTestRunTest::ForkProcess(cmDuration testTimeOut, bool explicitTimeout,
 
 void cmCTestRunTest::SetupHardwareEnvironment()
 {
-  std::string processCount = "CTEST_PROCESS_COUNT=";
+  std::string processCount = "CTEST_RESOURCE_GROUP_COUNT=";
   processCount += std::to_string(this->AllocatedHardware.size());
   cmSystemTools::PutEnv(processCount);
 
   std::size_t i = 0;
   for (auto const& process : this->AllocatedHardware) {
-    std::string prefix = "CTEST_PROCESS_";
+    std::string prefix = "CTEST_RESOURCE_GROUP_";
     prefix += std::to_string(i);
     std::string resourceList = prefix + '=';
     prefix += '_';