LibThreading: Build on Windows

Author: https://github.com/stasoid
Commit: 85da489f39
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2618
Reviewed-by: https://github.com/ADKaster ✅

Libraries/LibThreading/BackgroundAction.cpp

@@ -9,7 +9,6 @@
 #include <LibThreading/BackgroundAction.h>
 #include <LibThreading/Mutex.h>
 #include <LibThreading/Thread.h>
-#include <unistd.h>
 
 static pthread_mutex_t s_mutex = PTHREAD_MUTEX_INITIALIZER;
 static pthread_cond_t s_condition = PTHREAD_COND_INITIALIZER;

Libraries/LibThreading/CMakeLists.txt

@@ -5,3 +5,9 @@ set(SOURCES
 
 serenity_lib(LibThreading threading)
 target_link_libraries(LibThreading PRIVATE LibCore)
+
+if (WIN32)
+    find_package(pthread REQUIRED)
+    target_include_directories(LibThreading PRIVATE ${PTHREAD_INCLUDE_DIR})
+    target_link_libraries(LibThreading PUBLIC ${PTHREAD_LIBRARY})
+endif()

Libraries/LibThreading/Thread.cpp

@@ -5,9 +5,6 @@
  */
 
 #include <LibThreading/Thread.h>
-#include <pthread.h>
-#include <string.h>
-#include <unistd.h>
 
 namespace Threading {
 

Libraries/LibThreading/Thread.h

@@ -79,7 +79,7 @@ public:
 private:
     explicit Thread(ESCAPING Function<intptr_t()> action, StringView thread_name = {});
     Function<intptr_t()> m_action;
-    pthread_t m_tid { 0 };
+    pthread_t m_tid {};
     ByteString m_thread_name;
     Atomic<ThreadState> m_state { ThreadState::Startable };
 };
@@ -108,6 +108,16 @@ Result<T, ThreadError> Thread::join()
 
 }
 
+#ifdef AK_OS_WINDOWS
+template<>
+struct AK::Formatter<pthread_t> : AK::Formatter<FormatString> {
+    ErrorOr<void> format(FormatBuilder& builder, pthread_t const& tid)
+    {
+        return Formatter<FormatString>::format(builder, "{}"sv, pthread_getw32threadid_np(tid));
+    }
+};
+#endif
+
 template<>
 struct AK::Formatter<Threading::Thread> : AK::Formatter<FormatString> {
     ErrorOr<void> format(FormatBuilder& builder, Threading::Thread const& thread)