Remove inclusion of Windows.h in Logger.h

CMakeLists.txt

@@ -169,6 +169,7 @@ set(HEADER_FILES
         include/quill/backend/RdtscClock.h
         include/quill/backend/SignalHandler.h
         include/quill/backend/StringFromTime.h
+        include/quill/backend/ThreadUtilities.h
         include/quill/backend/TimestampFormatter.h
         include/quill/backend/TransitEvent.h
         include/quill/backend/TransitEventBuffer.h
@@ -207,7 +208,6 @@ set(HEADER_FILES
         include/quill/core/SinkManager.h
         include/quill/core/Spinlock.h
         include/quill/core/ThreadContextManager.h
-        include/quill/core/ThreadUtilities.h
         include/quill/core/TimeUtilities.h
         include/quill/core/UnboundedSPSCQueue.h
         include/quill/core/Utf8Conv.h

include/quill/backend/BackendUtilities.h

@@ -26,7 +26,7 @@
 
   #include <windows.h>
 
-  #include "quill/core/ThreadUtilities.h"
+  #include "quill/backend/ThreadUtilities.h"
 #elif defined(__APPLE__)
   #include <mach/thread_act.h>
   #include <mach/thread_policy.h>

include/quill/backend/BackendWorker.h

@@ -11,6 +11,7 @@
 #include "quill/backend/BacktraceStorage.h"
 #include "quill/backend/PatternFormatter.h"
 #include "quill/backend/RdtscClock.h"
+#include "quill/backend/ThreadUtilities.h"
 #include "quill/backend/TimestampFormatter.h"
 #include "quill/backend/TransitEvent.h"
 #include "quill/backend/TransitEventBuffer.h"
@@ -28,7 +29,6 @@
 #include "quill/core/QuillError.h"
 #include "quill/core/SinkManager.h"
 #include "quill/core/ThreadContextManager.h"
-#include "quill/core/ThreadUtilities.h"
 #include "quill/core/TimeUtilities.h"
 #include "quill/core/UnboundedSPSCQueue.h"
 #include "quill/sinks/Sink.h"
@@ -319,6 +319,9 @@ class BackendWorker
     // Cache this thread's id
     _worker_thread_id.store(get_thread_id());
 
+    // Call get_thread_name() to ensure it is retained by the linker.
+    (void)get_thread_name();
+
     // Double check or modify some backend options before we start
     if (_options.transit_events_hard_limit == 0)
     {

include/quill/backend/SignalHandler.h

@@ -6,14 +6,15 @@
 
 #pragma once
 
+#include "quill/backend/ThreadUtilities.h"
+
 #include "quill/Logger.h"
 #include "quill/core/Attributes.h"
 #include "quill/core/LogLevel.h"
 #include "quill/core/LoggerBase.h"
 #include "quill/core/LoggerManager.h"
 #include "quill/core/MacroMetadata.h"
 #include "quill/core/QuillError.h"
-#include "quill/core/ThreadUtilities.h"
 
 #include <atomic>
 #include <csignal>

include/quill/core/ThreadUtilities.h → include/quill/backend/ThreadUtilities.h

@@ -131,7 +131,7 @@ ReturnT callRunTimeDynamicLinkedFunction(std::string const& dll_name,
  * a null string is retrieved into name.
  * @return the thread name
  */
-QUILL_NODISCARD inline std::string get_thread_name()
+QUILL_NODISCARD QUILL_EXPORT QUILL_ATTRIBUTE_USED inline std::string get_thread_name()
 {
 #if defined(__CYGWIN__) || defined(__MINGW32__) || defined(__MINGW64__) || defined(QUILL_NO_THREAD_NAME_SUPPORT)
   // Disabled on MINGW / Cygwin.
@@ -172,7 +172,7 @@ QUILL_NODISCARD inline std::string get_thread_name()
  * Returns the os assigned ID of the thread
  * @return the thread ID of the calling thread
  */
-QUILL_NODISCARD inline uint32_t get_thread_id() noexcept
+QUILL_NODISCARD QUILL_EXPORT QUILL_ATTRIBUTE_USED inline uint32_t get_thread_id() noexcept
 {
 #if defined(__CYGWIN__)
   // get thread id on cygwin not supported

include/quill/core/Attributes.h

@@ -100,6 +100,17 @@
   #endif
 #endif
 
+/**
+ * Used
+ */
+#ifndef QUILL_ATTRIBUTE_USED
+  #if QUILL_HAS_ATTRIBUTE(used) || defined(__GNUC__) || defined(__clang__)
+    #define QUILL_ATTRIBUTE_USED __attribute__((used))
+  #else
+    #define QUILL_ATTRIBUTE_USED
+  #endif
+#endif
+
 /**
  * Likely
  */

include/quill/core/ThreadContextManager.h

@@ -11,7 +11,6 @@
 #include "quill/core/Common.h"
 #include "quill/core/InlinedVector.h"
 #include "quill/core/Spinlock.h"
-#include "quill/core/ThreadUtilities.h"
 #include "quill/core/UnboundedSPSCQueue.h"
 
 #include <atomic>
@@ -33,6 +32,10 @@ namespace detail
 class TransitEventBuffer;
 class BackendWorker;
 
+/** We forward declare these to avoid including ThreadUtilities.h **/
+std::string get_thread_name();
+uint32_t get_thread_id() noexcept;
+
 class ThreadContext
 {
 private:

test/unit_tests/ThreadContextManagerTest.cpp

@@ -1,5 +1,6 @@
 #include "doctest/doctest.h"
 
+#include "quill/backend/ThreadUtilities.h"
 #include "quill/core/FrontendOptions.h"
 #include "quill/core/ThreadContextManager.h"
 #include <array>