[llvm] [llvm-exegesis] Add thread IDs to subprocess memory names (PR #84451)

[Clement Courbet via llvm-commits]

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@@ -47,7 +57,8 @@ Error SubprocessMemory::addMemoryDefinition(
     pid_t ProcessPID) {
   SharedMemoryNames.reserve(MemoryDefinitions.size());
   for (auto &[Name, MemVal] : MemoryDefinitions) {
-    std::string SharedMemoryName = "/" + std::to_string(ProcessPID) + "memdef" +
+    std::string SharedMemoryName = "/" + std::to_string(ProcessPID) + "t" +
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legrosbuffle wrote:

ditto

https://github.com/llvm/llvm-project/pull/84451