thread/Thread: throw std::system_error on error

src/IOThread.cxx

@@ -24,8 +24,6 @@
 #include "thread/Thread.hxx"
 #include "thread/Name.hxx"
 #include "event/Loop.hxx"
-#include "system/FatalError.hxx"
-#include "util/Error.hxx"
 
 #include <assert.h>
 
@@ -75,10 +73,7 @@ io_thread_start()
 	assert(!io.thread.IsDefined());
 
 	const ScopeLock protect(io.mutex);
-
-	Error error;
-	if (!io.thread.Start(io_thread_func, nullptr, error))
-		FatalError(error);
+	io.thread.Start(io_thread_func, nullptr);
 }
 
 void

src/db/update/Service.cxx

@@ -27,9 +27,7 @@
 #include "db/plugins/simple/Directory.hxx"
 #include "storage/CompositeStorage.hxx"
 #include "Idle.hxx"
-#include "util/Error.hxx"
 #include "Log.hxx"
-#include "system/FatalError.hxx"
 #include "thread/Thread.hxx"
 #include "thread/Util.hxx"
 
@@ -160,9 +158,7 @@ UpdateService::StartThread(UpdateQueueItem &&i)
 	next = std::move(i);
 	walk = new UpdateWalk(GetEventLoop(), listener, *next.storage);
 
-	Error error;
-	if (!update_thread.Start(Task, this, error))
-		FatalError(error);
+	update_thread.Start(Task, this);
 
 	FormatDebug(update_domain,
 		    "spawned thread for update job id %i", next.id);

src/decoder/DecoderThread.cxx

@@ -24,7 +24,6 @@
 #include "DecoderError.hxx"
 #include "DecoderPlugin.hxx"
 #include "DetachedSong.hxx"
-#include "system/FatalError.hxx"
 #include "MusicPipe.hxx"
 #include "fs/Traits.hxx"
 #include "fs/AllocatedPath.hxx"
@@ -520,8 +519,5 @@ decoder_thread_start(DecoderControl &dc)
 	assert(!dc.thread.IsDefined());
 
 	dc.quit = false;
-
-	Error error;
-	if (!dc.thread.Start(decoder_task, &dc, error))
-		FatalError(error);
+	dc.thread.Start(decoder_task, &dc);
 }

src/input/ThreadInputStream.cxx

@@ -44,8 +44,8 @@ ThreadInputStream::~ThreadInputStream()
 	}
 }
 
-InputStream *
-ThreadInputStream::Start(Error &error)
+void
+ThreadInputStream::Start()
 {
 	assert(buffer == nullptr);
 
@@ -53,11 +53,7 @@ ThreadInputStream::Start(Error &error)
 	assert(p != nullptr);
 
 	buffer = new CircularBuffer<uint8_t>((uint8_t *)p, buffer_size);
-
-	if (!thread.Start(ThreadFunc, this, error))
-		return nullptr;
-
-	return this;
+	thread.Start(ThreadFunc, this);
 }
 
 inline void

src/input/ThreadInputStream.hxx

@@ -78,10 +78,8 @@ public:
 
 	/**
 	 * Initialize the object and start the thread.
-	 *
-	 * @return false on error
 	 */
-	InputStream *Start(Error &error);
+	void Start();
 
 	/* virtual methods from InputStream */
 	bool Check(Error &error) override final;

src/input/plugins/MmsInputPlugin.cxx

@@ -73,7 +73,7 @@ MmsInputStream::Open(Error &error)
 static InputStream *
 input_mms_open(const char *url,
 	       Mutex &mutex, Cond &cond,
-	       Error &error)
+	       gcc_unused Error &error)
 {
 	if (!StringStartsWith(url, "mms://") &&
 	    !StringStartsWith(url, "mmsh://") &&
@@ -82,11 +82,8 @@ input_mms_open(const char *url,
 		return nullptr;
 
 	auto m = new MmsInputStream(url, mutex, cond);
-	auto is = m->Start(error);
-	if (is == nullptr)
-		delete m;
-
-	return is;
+	m->Start();
+	return m;
 }
 
 size_t

src/neighbor/plugins/SmbclientNeighborPlugin.cxx

@@ -83,10 +83,11 @@ private:
 };
 
 bool
-SmbclientNeighborExplorer::Open(Error &error)
+SmbclientNeighborExplorer::Open(gcc_unused Error &error)
 {
 	quit = false;
-	return thread.Start(ThreadFunc, this, error);
+	thread.Start(ThreadFunc, this);
+	return true;
 }
 
 void

src/output/OutputThread.cxx

@@ -33,7 +33,6 @@
 #include "thread/Util.hxx"
 #include "thread/Slack.hxx"
 #include "thread/Name.hxx"
-#include "system/FatalError.hxx"
 #include "util/Error.hxx"
 #include "util/ConstBuffer.hxx"
 #include "Log.hxx"
@@ -709,7 +708,5 @@ AudioOutput::StartThread()
 {
 	assert(command == Command::NONE);
 
-	Error error;
-	if (!thread.Start(Task, this, error))
-		FatalError(error);
+	thread.Start(Task, this);
 }

src/player/Thread.cxx

@@ -26,7 +26,6 @@
 #include "MusicBuffer.hxx"
 #include "MusicChunk.hxx"
 #include "DetachedSong.hxx"
-#include "system/FatalError.hxx"
 #include "CrossFade.hxx"
 #include "Control.hxx"
 #include "output/MultipleOutputs.hxx"
@@ -1235,7 +1234,5 @@ StartPlayerThread(PlayerControl &pc)
 {
 	assert(!pc.thread.IsDefined());
 
-	Error error;
-	if (!pc.thread.Start(player_task, &pc, error))
-		FatalError(error);
+	pc.thread.Start(player_task, &pc);
 }

src/thread/Thread.cxx

@@ -19,14 +19,14 @@
 
 #include "config.h"
 #include "Thread.hxx"
-#include "util/Error.hxx"
+#include "system/Error.hxx"
 
 #ifdef ANDROID
 #include "java/Global.hxx"
 #endif
 
 bool
-Thread::Start(void (*_f)(void *ctx), void *_ctx, Error &error)
+Thread::Start(void (*_f)(void *ctx), void *_ctx)
 {
 	assert(!IsDefined());
 
@@ -35,10 +35,8 @@ Thread::Start(void (*_f)(void *ctx), void *_ctx, Error &error)
 
 #ifdef WIN32
 	handle = ::CreateThread(nullptr, 0, ThreadProc, this, 0, &id);
-	if (handle == nullptr) {
-		error.SetLastError("Failed to create thread");
-		return false;
-	}
+	if (handle == nullptr)
+		throw MakeLastError("Failed to create thread");
 #else
 #ifndef NDEBUG
 	creating = true;
@@ -50,8 +48,7 @@ Thread::Start(void (*_f)(void *ctx), void *_ctx, Error &error)
 #ifndef NDEBUG
 		creating = false;
 #endif
-		error.SetErrno(e, "Failed to create thread");
-		return false;
+		throw MakeErrno(e, "Failed to create thread");
 	}
 
 	defined = true;

src/thread/Thread.hxx

@@ -31,8 +31,6 @@
 
 #include <assert.h>
 
-class Error;
-
 class Thread {
 #ifdef WIN32
 	HANDLE handle = nullptr;
@@ -91,7 +89,7 @@ public:
 #endif
 	}
 
-	bool Start(void (*f)(void *ctx), void *ctx, Error &error);
+	bool Start(void (*f)(void *ctx), void *ctx);
 	void Join();
 
 private: