*: check defined(_WIN32) instead of defined(WIN32)

Only _WIN32 is defined by the compiler, and WIN32 is not standardized
and may be missing.

Closes #169

src/thread/Cond.hxx

@@ -30,7 +30,7 @@
 #ifndef THREAD_COND_HXX
 #define THREAD_COND_HXX
 
-#ifdef WIN32
+#ifdef _WIN32
 
 #include "WindowsCond.hxx"
 class Cond : public WindowsCond {};

src/thread/Id.hxx

@@ -22,7 +22,7 @@
 
 #include "Compiler.h"
 
-#ifdef WIN32
+#ifdef _WIN32
 #include <windows.h>
 #else
 #include <pthread.h>
@@ -34,7 +34,7 @@
  * debugging code.
  */
 class ThreadId {
-#ifdef WIN32
+#ifdef _WIN32
 	DWORD id;
 #else
 	pthread_t id;
@@ -46,7 +46,7 @@ public:
 	 */
 	ThreadId() = default;
 
-#ifdef WIN32
+#ifdef _WIN32
 	constexpr ThreadId(DWORD _id):id(_id) {}
 #else
 	constexpr ThreadId(pthread_t _id):id(_id) {}
@@ -54,7 +54,7 @@ public:
 
 	gcc_const
 	static ThreadId Null() noexcept {
-#ifdef WIN32
+#ifdef _WIN32
 		return 0;
 #else
 		static ThreadId null;
@@ -72,7 +72,7 @@ public:
 	 */
 	gcc_pure
 	static const ThreadId GetCurrent() noexcept {
-#ifdef WIN32
+#ifdef _WIN32
 		return ::GetCurrentThreadId();
 #else
 		return pthread_self();
@@ -81,7 +81,7 @@ public:
 
 	gcc_pure
 	bool operator==(const ThreadId &other) const noexcept {
-#ifdef WIN32
+#ifdef _WIN32
 		return id == other.id;
 #else
 		return pthread_equal(id, other.id);

src/thread/Mutex.hxx

@@ -32,7 +32,7 @@
 
 #include <mutex>
 
-#ifdef WIN32
+#ifdef _WIN32
 
 #include "CriticalSection.hxx"
 class Mutex : public CriticalSection {};

src/thread/Thread.cxx

@@ -33,7 +33,7 @@ Thread::Start(void (*_f)(void *ctx), void *_ctx)
 	f = _f;
 	ctx = _ctx;
 
-#ifdef WIN32
+#ifdef _WIN32
 	handle = ::CreateThread(nullptr, 0, ThreadProc, this, 0, &id);
 	if (handle == nullptr)
 		throw MakeLastError("Failed to create thread");
@@ -66,7 +66,7 @@ Thread::Join()
 	assert(IsDefined());
 	assert(!IsInside());
 
-#ifdef WIN32
+#ifdef _WIN32
 	::WaitForSingleObject(handle, INFINITE);
 	::CloseHandle(handle);
 	handle = nullptr;
@@ -76,7 +76,7 @@ Thread::Join()
 #endif
 }
 
-#ifdef WIN32
+#ifdef _WIN32
 
 DWORD WINAPI
 Thread::ThreadProc(LPVOID ctx)

src/thread/Thread.hxx

@@ -23,7 +23,7 @@
 #include "check.h"
 #include "Compiler.h"
 
-#ifdef WIN32
+#ifdef _WIN32
 #include <windows.h>
 #else
 #include <pthread.h>
@@ -32,7 +32,7 @@
 #include <assert.h>
 
 class Thread {
-#ifdef WIN32
+#ifdef _WIN32
 	HANDLE handle = nullptr;
 	DWORD id;
 #else
@@ -66,7 +66,7 @@ public:
 #endif
 
 	bool IsDefined() const {
-#ifdef WIN32
+#ifdef _WIN32
 		return handle != nullptr;
 #else
 		return defined;
@@ -78,7 +78,7 @@ public:
 	 */
 	gcc_pure
 	bool IsInside() const noexcept {
-#ifdef WIN32
+#ifdef _WIN32
 		return GetCurrentThreadId() == id;
 #else
 #ifdef NDEBUG
@@ -93,7 +93,7 @@ public:
 	void Join();
 
 private:
-#ifdef WIN32
+#ifdef _WIN32
 	static DWORD WINAPI ThreadProc(LPVOID ctx);
 #else
 	static void *ThreadProc(void *ctx);

src/thread/Util.cxx

@@ -34,7 +34,7 @@
 #include <sched.h>
 #include <sys/syscall.h>
 #include <unistd.h>
-#elif defined(WIN32)
+#elif defined(_WIN32)
 #include <windows.h>
 #endif
 
@@ -71,7 +71,7 @@ SetThreadIdlePriority()
 
 	ioprio_set_idle();
 
-#elif defined(WIN32)
+#elif defined(_WIN32)
 	SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_IDLE);
 #endif
 };