mirror of https://github.com/OpenTTD/OpenTTD.git
(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)
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@ -32,7 +32,7 @@ public:
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{
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this->m_sem = ThreadSemaphore::New();
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/* Create a thread and start stFiberProc */
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this->m_thread = ThreadObject::New(&stFiberProc, this);
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this->m_thread = ThreadObject::New(&stFiberProc, this, NULL);
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}
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/**
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@ -288,7 +288,7 @@ void GenerateWorld(GenerateWorldMode mode, uint size_x, uint size_y)
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SetupColorsAndInitialWindow();
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if (_network_dedicated ||
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(_gw.thread = ThreadObject::New(&_GenerateWorld, NULL)) == NULL) {
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(_gw.thread = ThreadObject::New(&_GenerateWorld, NULL, &ThreadObject::TerminateCleanup)) == NULL) {
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DEBUG(misc, 1, "Cannot create genworld thread, reverting to single-threaded mode");
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_gw.threaded = false;
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_GenerateWorld(NULL);
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@ -1695,7 +1695,7 @@ SaveOrLoadResult SaveOrLoad(const char *filename, int mode, Subdirectory sb)
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SaveFileStart();
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if (_network_server ||
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(_save_thread = ThreadObject::New(&SaveFileToDiskThread, NULL)) == NULL) {
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(_save_thread = ThreadObject::New(&SaveFileToDiskThread, NULL, &ThreadObject::TerminateCleanup)) == NULL) {
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if (!_network_server) DEBUG(sl, 1, "Cannot create savegame thread, reverting to single-threaded mode...");
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SaveOrLoadResult result = SaveFileToDisk(false);
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10
src/thread.h
10
src/thread.h
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@ -6,6 +6,7 @@
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#define THREAD_H
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typedef void (*OTTDThreadFunc)(void *);
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typedef void (*OTTDThreadTerminateFunc)(class ThreadObject *self);
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/**
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* A Thread Object which works on all our supported OSes.
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@ -56,9 +57,10 @@ public:
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* with optinal params.
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* @param proc The procedure to call inside the thread.
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* @param param The params to give with 'proc'.
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* @param terminate_func The function (or NULL) to call when the thread terminates.
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* @return True if the thread was started correctly.
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*/
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static ThreadObject *New(OTTDThreadFunc proc, void *param);
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static ThreadObject *New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func);
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/**
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* Convert the current thread to a new ThreadObject.
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@ -71,6 +73,12 @@ public:
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* @return The thread ID of the current active thread.
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*/
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static uint CurrentId();
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/**
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* A OTTDThreadTerminateFunc, which cleans up the thread itself
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* at termination of the thread (so it becomes self-managed).
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*/
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static void TerminateCleanup(ThreadObject *self) { delete self; }
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};
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/**
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@ -57,6 +57,7 @@ void KPutStr(CONST_STRPTR format)
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class ThreadObject_MorphOS : public ThreadObject {
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private:
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APTR m_thr; ///< System thread identifier.
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OTTDThreadTerminateFunc m_terminate_func; ///< Function to call on thread termination.
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struct MsgPort *m_replyport;
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struct OTTDThreadStartupMessage m_msg;
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@ -64,7 +65,9 @@ public:
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/**
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* Create a sub process and start it, calling proc(param).
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*/
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ThreadObject_MorphOS(OTTDThreadFunc proc, void *param) : m_thr(0)
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ThreadObject_MorphOS(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func) :
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m_thr(0),
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m_terminate_func(terminate_func)
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{
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struct Task *parent;
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@ -111,7 +114,9 @@ public:
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/**
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* Create a thread and attach current thread to it.
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*/
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ThreadObject_MorphOS() : m_thr(0)
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ThreadObject_MorphOS() :
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m_thr(0),
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m_terminate_func(NULL)
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{
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m_thr = FindTask(NULL);
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}
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@ -210,12 +215,14 @@ private:
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/* Quit the child, exec.library will reply the startup msg internally. */
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KPutStr("[Child] Done.\n");
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if (this->terminate_func != NULL) this->terminate_func(this);
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}
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};
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
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{
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return new ThreadObject_MorphOS(proc, param);
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return new ThreadObject_MorphOS(proc, param, terminate_func);
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}
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/* static */ ThreadObject *ThreadObject::AttachCurrent()
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@ -6,7 +6,7 @@
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#include "thread.h"
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#include "fiber.hpp"
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
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{
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return NULL;
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}
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@ -59,7 +59,7 @@ void OTTDExitThread()
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#endif
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
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{
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return NULL;
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}
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@ -22,16 +22,18 @@ private:
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bool m_attached; ///< True if the ThreadObject was attached to an existing thread.
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sem_t m_sem_start; ///< Here the new thread waits before it starts.
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sem_t m_sem_stop; ///< Here the other thread can wait for this thread to end.
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OTTDThreadTerminateFunc m_terminate_func; ///< Function to call on thread termination.
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public:
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/**
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* Create a pthread and start it, calling proc(param).
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*/
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ThreadObject_pthread(OTTDThreadFunc proc, void *param) :
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ThreadObject_pthread(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func) :
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m_thr(0),
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m_proc(proc),
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m_param(param),
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m_attached(false)
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m_attached(false),
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m_terminate_func(terminate_func)
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{
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sem_init(&m_sem_start, 0, 0);
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sem_init(&m_sem_stop, 0, 0);
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@ -47,7 +49,8 @@ public:
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m_thr(0),
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m_proc(NULL),
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m_param(0),
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m_attached(true)
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m_attached(true),
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m_terminate_func(NULL)
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{
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sem_init(&m_sem_start, 0, 0);
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sem_init(&m_sem_stop, 0, 0);
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@ -102,8 +105,6 @@ public:
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pthread_join(m_thr, NULL);
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m_thr = 0;
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delete this;
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}
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/* virtual */ bool IsCurrent()
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@ -136,26 +137,22 @@ private:
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/* The new thread stops here so the calling thread can complete pthread_create() call */
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sem_wait(&m_sem_start);
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/* Did this thread die naturally/via exit, or did it join? */
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bool exit = false;
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/* Call the proc of the creator to continue this thread */
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try {
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m_proc(m_param);
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} catch (...) {
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exit = true;
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}
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/* Notify threads waiting for our completion */
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sem_post(&m_sem_stop);
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if (exit) delete this;
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if (this->m_terminate_func != NULL) this->m_terminate_func(this);
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}
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};
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
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{
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return new ThreadObject_pthread(proc, param);
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return new ThreadObject_pthread(proc, param, terminate_func);
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}
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/* static */ ThreadObject *ThreadObject::AttachCurrent()
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@ -20,17 +20,19 @@ private:
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OTTDThreadFunc m_proc;
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void *m_param;
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bool m_attached;
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OTTDThreadTerminateFunc m_terminate_func;
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public:
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/**
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* Create a win32 thread and start it, calling proc(param).
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*/
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ThreadObject_Win32(OTTDThreadFunc proc, void *param) :
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ThreadObject_Win32(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func) :
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m_id_thr(0),
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m_h_thr(NULL),
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m_proc(proc),
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m_param(param),
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m_attached(false)
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m_attached(false),
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m_terminate_func(terminate_func)
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{
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m_h_thr = (HANDLE)_beginthreadex(NULL, 0, &stThreadProc, this, CREATE_SUSPENDED, &m_id_thr);
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if (m_h_thr == NULL) return;
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@ -45,7 +47,8 @@ public:
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m_h_thr(NULL),
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m_proc(NULL),
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m_param(NULL),
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m_attached(false)
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m_attached(false),
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m_terminate_func(NULL)
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{
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BOOL ret = DuplicateHandle(GetCurrentProcess(), GetCurrentThread(), GetCurrentProcess(), &m_h_thr, 0, FALSE, DUPLICATE_SAME_ACCESS);
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if (!ret) return;
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@ -130,12 +133,14 @@ private:
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m_proc(m_param);
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} catch (...) {
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}
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if (this->m_terminate_func != NULL) this->m_terminate_func(this);
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}
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};
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
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/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
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{
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return new ThreadObject_Win32(proc, param);
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return new ThreadObject_Win32(proc, param, terminate_func);
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}
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/* static */ ThreadObject* ThreadObject::AttachCurrent()
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