cpp/openttd-patchpack/source Changeset - r9477:56f022446026

Changeset - r9477:56f022446026

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truebrain - 16 years ago 2008-06-08 12:06:27
truebrain@openttd.org

(svn r13412) -Add: OTTDThreadTerminateFunc, for all thread systems, which is called when a thread is terminated. Now GenWorld- and SaveLoad-thread cleanup theirselves correctly, while Fibers don't (as that causes access-violations)

9 files changed with 44 insertions and 27 deletions:

src/fiber_thread.cpp

src/genworld.cpp

src/saveload.cpp

src/thread.h

src/thread_morphos.cpp

src/thread_none.cpp

src/thread_os2.cpp

src/thread_pthread.cpp

src/thread_win32.cpp

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src/fiber_thread.cpp

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@@ @@ -32,7 +32,7 @@ public: @@
+	{
 		this->m_sem = ThreadSemaphore::New();
 		/* Create a thread and start stFiberProc */
 		this->m_thread = ThreadObject::New(&stFiberProc, this);
+		this->m_thread = ThreadObject::New(&stFiberProc, this, NULL);
+	}
 	/**

src/genworld.cpp

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@@ @@ -288,7 +288,7 @@ void GenerateWorld(GenerateWorldMode mod @@
 	SetupColorsAndInitialWindow();
 	if (_network_dedicated ||
 	    (_gw.thread = ThreadObject::New(&_GenerateWorld, NULL)) == NULL) {
+	    (_gw.thread = ThreadObject::New(&_GenerateWorld, NULL, &ThreadObject::TerminateCleanup)) == NULL) {
 		DEBUG(misc, 1, "Cannot create genworld thread, reverting to single-threaded mode");
 		_gw.threaded = false;
 		_GenerateWorld(NULL);

src/saveload.cpp

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@@ @@ -1695,7 +1695,7 @@ SaveOrLoadResult SaveOrLoad(const char * @@
 			SaveFileStart();
 			if (_network_server ||
 						(_save_thread = ThreadObject::New(&SaveFileToDiskThread, NULL)) == NULL) {
+						(_save_thread = ThreadObject::New(&SaveFileToDiskThread, NULL, &ThreadObject::TerminateCleanup)) == NULL) {
 				if (!_network_server) DEBUG(sl, 1, "Cannot create savegame thread, reverting to single-threaded mode...");
 				SaveOrLoadResult result = SaveFileToDisk(false);

src/thread.h

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@@ @@ -6,6 +6,7 @@ @@
 #define THREAD_H
 typedef void (*OTTDThreadFunc)(void *);
 typedef void (*OTTDThreadTerminateFunc)(class ThreadObject *self);
 /**
  * A Thread Object which works on all our supported OSes.
@@ @@ -56,9 +57,10 @@ public: @@
 	 *  with optinal params.
 	 * @param proc The procedure to call inside the thread.
 	 * @param param The params to give with 'proc'.
 	 * @param terminate_func The function (or NULL) to call when the thread terminates.
 	 * @return True if the thread was started correctly.
 	 */
 	static ThreadObject *New(OTTDThreadFunc proc, void *param);
+	static ThreadObject *New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func);
 	/**
 	 * Convert the current thread to a new ThreadObject.
@@ @@ -71,6 +73,12 @@ public: @@
 	 * @return The thread ID of the current active thread.
 	 */
 	static uint CurrentId();
 	/**
 	 * A OTTDThreadTerminateFunc, which cleans up the thread itself
 	 *  at termination of the thread (so it becomes self-managed).
 	 */
 	static void TerminateCleanup(ThreadObject *self) { delete self; }
 };
 /**

src/thread_morphos.cpp

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@@ @@ -57,6 +57,7 @@ void KPutStr(CONST_STRPTR format) @@
 class ThreadObject_MorphOS : public ThreadObject {
 private:
 	APTR m_thr;                  ///< System thread identifier.
 	OTTDThreadTerminateFunc m_terminate_func; ///< Function to call on thread termination.
 	struct MsgPort *m_replyport;
 	struct OTTDThreadStartupMessage m_msg;
@@ @@ -64,7 +65,9 @@ public: @@
 	/**
 	 * Create a sub process and start it, calling proc(param).
 	 */
 	ThreadObject_MorphOS(OTTDThreadFunc proc, void *param) : m_thr(0)
 	ThreadObject_MorphOS(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func) :
 		m_thr(0),
 		m_terminate_func(terminate_func)
+	{
 		struct Task *parent;
@@ @@ -111,7 +114,9 @@ public: @@
 	/**
 	 * Create a thread and attach current thread to it.
 	 */
 	ThreadObject_MorphOS() : m_thr(0)
 	ThreadObject_MorphOS() :
 		m_thr(0),
 		m_terminate_func(NULL)
+	{
 		m_thr = FindTask(NULL);
+	}
@@ @@ -210,12 +215,14 @@ private: @@
 		/*  Quit the child, exec.library will reply the startup msg internally. */
 		KPutStr("[Child] Done.\n");
 		if (this->terminate_func != NULL) this->terminate_func(this);
+	}
 };
 /* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
+/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
+{
 	return new ThreadObject_MorphOS(proc, param);
+	return new ThreadObject_MorphOS(proc, param, terminate_func);
+}
 /* static */ ThreadObject *ThreadObject::AttachCurrent()

src/thread_none.cpp

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@@ @@ -6,7 +6,7 @@ @@
 #include "thread.h"
 #include "fiber.hpp"
 /* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
+/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
+{
 	return NULL;
+}

src/thread_os2.cpp

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@@ @@ -59,7 +59,7 @@ void OTTDExitThread() @@
 #endif
 /* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
+/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
+{
 	return NULL;
+}

src/thread_pthread.cpp

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@@ @@ -22,16 +22,18 @@ private: @@
 	bool      m_attached;        ///< True if the ThreadObject was attached to an existing thread.
 	sem_t     m_sem_start;       ///< Here the new thread waits before it starts.
 	sem_t     m_sem_stop;        ///< Here the other thread can wait for this thread to end.
 	OTTDThreadTerminateFunc m_terminate_func; ///< Function to call on thread termination.
 public:
 	/**
 	 * Create a pthread and start it, calling proc(param).
 	 */
 	ThreadObject_pthread(OTTDThreadFunc proc, void *param) :
+	ThreadObject_pthread(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func) :
 		m_thr(0),
 		m_proc(proc),
 		m_param(param),
 		m_attached(false)
 		m_attached(false),
 		m_terminate_func(terminate_func)
+	{
 		sem_init(&m_sem_start, 0, 0);
 		sem_init(&m_sem_stop, 0, 0);
@@ @@ -47,7 +49,8 @@ public: @@
 		m_thr(0),
 		m_proc(NULL),
 		m_param(0),
 		m_attached(true)
 		m_attached(true),
 		m_terminate_func(NULL)
+	{
 		sem_init(&m_sem_start, 0, 0);
 		sem_init(&m_sem_stop, 0, 0);
@@ @@ -102,8 +105,6 @@ public: @@
 		pthread_join(m_thr, NULL);
 		m_thr = 0;
 		delete this;
+	}
 	/* virtual */ bool IsCurrent()
@@ @@ -136,26 +137,22 @@ private: @@
 		/* The new thread stops here so the calling thread can complete pthread_create() call */
 		sem_wait(&m_sem_start);
 		/* Did this thread die naturally/via exit, or did it join? */
 		bool exit = false;
 		/* Call the proc of the creator to continue this thread */
 		try {
 			m_proc(m_param);
 		} catch (...) {
 			exit = true;
+		}
 		/* Notify threads waiting for our completion */
 		sem_post(&m_sem_stop);
-		if (exit) delete this;
+		if (this->m_terminate_func != NULL) this->m_terminate_func(this);
+	}
 };
 /* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
+/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
+{
 	return new ThreadObject_pthread(proc, param);
+	return new ThreadObject_pthread(proc, param, terminate_func);
+}
 /* static */ ThreadObject *ThreadObject::AttachCurrent()

src/thread_win32.cpp

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@@ @@ -20,17 +20,19 @@ private: @@
 	OTTDThreadFunc m_proc;
 	void     *m_param;
 	bool     m_attached;
 	OTTDThreadTerminateFunc m_terminate_func;
 public:
 	/**
 	 * Create a win32 thread and start it, calling proc(param).
 	 */
 	ThreadObject_Win32(OTTDThreadFunc proc, void *param) :
+	ThreadObject_Win32(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func) :
 		m_id_thr(0),
 		m_h_thr(NULL),
 		m_proc(proc),
 		m_param(param),
 		m_attached(false)
 		m_attached(false),
 		m_terminate_func(terminate_func)
+	{
 		m_h_thr = (HANDLE)_beginthreadex(NULL, 0, &stThreadProc, this, CREATE_SUSPENDED, &m_id_thr);
 		if (m_h_thr == NULL) return;
@@ @@ -45,7 +47,8 @@ public: @@
 		m_h_thr(NULL),
 		m_proc(NULL),
 		m_param(NULL),
 		m_attached(false)
 		m_attached(false),
 		m_terminate_func(NULL)
+	{
 		BOOL ret = DuplicateHandle(GetCurrentProcess(), GetCurrentThread(), GetCurrentProcess(), &m_h_thr, 0, FALSE, DUPLICATE_SAME_ACCESS);
 		if (!ret) return;
@@ @@ -130,12 +133,14 @@ private: @@
 			m_proc(m_param);
 		} catch (...) {
+		}
 		if (this->m_terminate_func != NULL) this->m_terminate_func(this);
+	}
 };
 /* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
+/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
+{
 	return new ThreadObject_Win32(proc, param);
+	return new ThreadObject_Win32(proc, param, terminate_func);
+}
 /* static */ ThreadObject* ThreadObject::AttachCurrent()

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