Add method to get name of current thread

src/thread/thread.h

@@ -133,4 +133,12 @@ void SetSelfAsMainThread();
  */
 bool IsMainThread();
 
+/**
+ * Get the name of the current thread, if any.
+ * @param str The start of the buffer.
+ * @param last The last char of the buffer.
+ * @return Number of chars written to str.
+ */
+int GetThreadName(char *str, const char *last);
+
 #endif /* THREAD_H */

src/thread/thread_morphos.cpp

@@ -199,3 +199,5 @@ private:
 void SetSelfAsMainThread() { }
 
 bool IsMainThread() { return false; }
+
+int GetThreadName(char *str, const char *last) { return 0; }

src/thread/thread_none.cpp

@@ -37,3 +37,5 @@ public:
 void SetSelfAsMainThread() { }
 
 bool IsMainThread() { return true; }
+
+int GetThreadName(char *str, const char *last) { return 0; }

src/thread/thread_os2.cpp

@@ -149,3 +149,5 @@ public:
 void SetSelfAsMainThread() { }
 
 bool IsMainThread() { return false; }
+
+int GetThreadName(char *str, const char *last) { return 0; }

src/thread/thread_pthread.cpp

@@ -11,6 +11,7 @@
 
 #include "../stdafx.h"
 #include "thread.h"
+#include "../string_func.h"
 #include <pthread.h>
 #include <errno.h>
 
@@ -201,3 +202,17 @@ bool IsMainThread()
 {
 	return main_thread == pthread_self();
 }
+
+int GetThreadName(char *str, const char *last)
+{
+#if defined(__GLIBC__)
+#if __GLIBC_PREREQ(2, 12)
+	char buffer[16];
+	int result = pthread_getname_np(pthread_self(), buffer, sizeof(buffer));
+	if (result == 0) {
+		return seprintf(str, last, "%s", buffer);
+	}
+#endif
+#endif
+	return 0;
+}

src/thread/thread_win32.cpp

@@ -13,13 +13,19 @@
 #include "thread.h"
 #include "../debug.h"
 #include "../core/alloc_func.hpp"
+#include "../scope.h"
+#include "../string_func.h"
 #include <stdlib.h>
 #include <windows.h>
 #include <process.h>
 #include "../os/windows/win32.h"
+#include <map>
+#include <string>
 
 #include "../safeguards.h"
 
+static void Win32SetThreadName(uint id, const char *name);
+
 /**
  * Win32 thread version for ThreadObject.
  */
@@ -46,6 +52,7 @@ public:
 	{
 		this->thread = (HANDLE)_beginthreadex(NULL, 0, &stThreadProc, this, CREATE_SUSPENDED, &this->id);
 		if (this->thread == NULL) return;
+		Win32SetThreadName(this->id, name);
 		ResumeThread(this->thread);
 	}
 
@@ -177,3 +184,26 @@ bool IsMainThread()
 {
 	return main_thread_id == GetCurrentThreadId();
 }
+
+static std::map<uint, std::string> _thread_name_map;
+static ThreadMutex_Win32 _thread_name_map_mutex;
+
+static void Win32SetThreadName(uint id, const char *name)
+{
+	_thread_name_map_mutex.BeginCritical();
+	_thread_name_map[id] = name;
+	_thread_name_map_mutex.EndCritical();
+}
+
+int GetThreadName(char *str, const char *last)
+{
+	_thread_name_map_mutex.BeginCritical();
+	auto guard = scope_guard([&]() {
+		_thread_name_map_mutex.EndCritical();
+	});
+	auto iter = _thread_name_map.find(GetCurrentThreadId());
+	if (iter != _thread_name_map.end()) {
+		return seprintf(str, last, "%s", iter->second.c_str());
+	}
+	return 0;
+}