[NFC][sanitizer] Simplify GetThreadLocked

vitalybuka · vitalybuka · commit 3cb4d20d5bce · 2024-10-10T21:20:11.000-07:00
Now we can pass `invalid tid`.
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_thread_registry.h b/compiler-rt/lib/sanitizer_common/sanitizer_thread_registry.h
@@ -101,7 +101,7 @@ class SANITIZER_MUTEX ThreadRegistry {
 
   // Should be guarded by ThreadRegistryLock.
   ThreadContextBase *GetThreadLocked(u32 tid) {
-    return threads_.empty() ? nullptr : threads_[tid];
+    return tid < threads_.size() ? threads_[tid] : nullptr;
   }
 
   u32 NumThreadsLocked() const { return threads_.size(); }

Original file line number	Diff line number	Diff line change
`@@ -101,7 +101,7 @@ class SANITIZER_MUTEX ThreadRegistry {`
`101`	`101`
`102`	`102`	`// Should be guarded by ThreadRegistryLock.`
`103`	`103`	`ThreadContextBase *GetThreadLocked(u32 tid) {`
`104`		`- return threads_.empty() ? nullptr : threads_[tid];`
	`104`	`+ return tid < threads_.size() ? threads_[tid] : nullptr;`
`105`	`105`	`}`
`106`	`106`
`107`	`107`	`u32 NumThreadsLocked() const { return threads_.size(); }`