[compiler-rt] [compiler-rt] Reland "SetThreadName implementation for Fuchsia" (PR #105179)

[David CARLIER via llvm-commits]

https://github.com/devnexen created https://github.com/llvm/llvm-project/pull/105179

None

>From 91327e929fbdbe13a1643902f1bc94f0dc69cd7d Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen at gmail.com>
Date: Tue, 20 Aug 2024 18:55:18 +0100
Subject: [PATCH] [compiler-rt] Reland "SetThreadName implementation for
 Fuchsia"

---
 compiler-rt/lib/fuzzer/FuzzerUtilFuchsia.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/compiler-rt/lib/fuzzer/FuzzerUtilFuchsia.cpp b/compiler-rt/lib/fuzzer/FuzzerUtilFuchsia.cpp
index fe79e1908d6029..a331a474121fe1 100644
--- a/compiler-rt/lib/fuzzer/FuzzerUtilFuchsia.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerUtilFuchsia.cpp
@@ -607,7 +607,14 @@ size_t PageSize() {
 }
 
 void SetThreadName(std::thread &thread, const std::string &name) {
-  // TODO ?
+  std::string tmp(name);
+  if (tmp.resize() > 31)
+    tmp.resize(31);
+  if (zx_status_t s = zx_object_set_property(
+          thread.native_handle(), ZX_PROP_NAME, tmp.c_str(), tmp.size());
+      s != ZX_OK)
+    Printf("SetThreadName for name %s failed: %s", name.c_str(),
+           zx_status_get_string(s));
 }
 
 } // namespace fuzzer