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Location: cpp/openttd-patchpack/source/src/thread_morphos.cpp - annotation
r10412:5923d8bb7636
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(svn r14665) -Update: WebTranslator2 update to 2008-12-09 18:44:40
arabic_egypt - 301 fixed by khaloofah (301)
esperanto - 64 fixed, 2 changed by alekcxjo (66)
hebrew - 430 fixed by moshe (430)
hungarian - 10 changed by alyr (9), oklmernok (1)
indonesian - 49 fixed, 4 changed by fanioz (40), anansboga (13)
lithuanian - 5 fixed by Enternald (5)
portuguese - 6 fixed by SnowFlake (6)
thai - 333 fixed by vetbook (333)
arabic_egypt - 301 fixed by khaloofah (301)
esperanto - 64 fixed, 2 changed by alekcxjo (66)
hebrew - 430 fixed by moshe (430)
hungarian - 10 changed by alyr (9), oklmernok (1)
indonesian - 49 fixed, 4 changed by fanioz (40), anansboga (13)
lithuanian - 5 fixed by Enternald (5)
portuguese - 6 fixed by SnowFlake (6)
thai - 333 fixed by vetbook (333)
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r9120:4bcdba6588b5 r9120:4bcdba6588b5 r9120:4bcdba6588b5 | /* $Id$ */
/** @file thread_morphos.cpp MorphOS implementation of Threads. */
#include "stdafx.h"
#include "thread.h"
#include "debug.h"
#include "core/alloc_func.hpp"
#include <stdlib.h>
#include <unistd.h>
#include <exec/types.h>
#include <exec/rawfmt.h>
#include <dos/dostags.h>
#include <proto/dos.h>
#include <proto/exec.h>
/**
* avoid name clashes with MorphOS API functions
*/
#undef Exit
#undef Wait
/**
* NOTE: this code heavily depends on latest libnix updates. So make
* sure you link with new stuff which supports semaphore locking of
* the IO resources, else it will just go foobar.
*/
struct OTTDThreadStartupMessage {
struct Message msg; ///< standard exec.library message (MUST be the first thing in the message struct!)
OTTDThreadFunc func; ///< function the thread will execute
void *arg; ///< functions arguments for the thread function
};
/**
* Default OpenTTD STDIO/ERR debug output is not very useful for this, so we
* utilize serial/ramdebug instead.
*/
#ifndef NO_DEBUG_MESSAGES
void KPutStr(CONST_STRPTR format)
{
RawDoFmt(format, NULL, (void (*)())RAWFMTFUNC_SERIAL, NULL);
}
#else
#define KPutStr(x)
#endif
/**
* MorphOS version for ThreadObject.
*/
class ThreadObject_MorphOS : public ThreadObject {
private:
APTR m_thr; ///< System thread identifier.
struct MsgPort *m_replyport;
struct OTTDThreadStartupMessage m_msg;
public:
/**
* Create a sub process and start it, calling proc(param).
*/
ThreadObject_MorphOS(OTTDThreadFunc proc, void *param) : m_thr(0)
{
struct Task *parent;
KPutStr("[OpenTTD] Create thread...\n");
parent = FindTask(NULL);
/* Make sure main thread runs with sane priority */
SetTaskPri(parent, 0);
/* Things we'll pass down to the child by utilizing NP_StartupMsg */
m_msg.func = proc;
m_msg.arg = param;
m_replyport = CreateMsgPort();
if (m_replyport != NULL) {
struct Process *child;
m_msg.msg.mn_Node.ln_Type = NT_MESSAGE;
m_msg.msg.mn_ReplyPort = m_replyport;
m_msg.msg.mn_Length = sizeof(struct OTTDThreadStartupMessage);
child = CreateNewProcTags(
NP_CodeType, CODETYPE_PPC,
NP_Entry, ThreadObject_MorphOS::Proxy,
NP_StartupMsg, (IPTR)&m_msg,
NP_Priority, 5UL,
NP_Name, (IPTR)"OpenTTD Thread",
NP_PPCStackSize, 131072UL,
TAG_DONE);
m_thr = (APTR) child;
if (child != NULL) {
KPutStr("[OpenTTD] Child process launched.\n");
} else {
KPutStr("[OpenTTD] Couldn't create child process. (constructors never fail, yeah!)\n");
DeleteMsgPort(m_replyport);
}
}
}
/**
* Create a thread and attach current thread to it.
*/
ThreadObject_MorphOS() : m_thr(0)
{
m_thr = FindTask(NULL);
}
/* virtual */ ~ThreadObject_MorphOS()
{
}
/* virtual */ bool IsRunning()
{
return m_thr != 0;
}
/* virtual */ bool WaitForStop()
{
/* You can't wait on yourself */
assert(!IsCurrent());
/* If the thread is not running, waiting is over */
if (!IsRunning()) return true;
WaitPort(m_replyport);
GetMsg(m_replyport);
DeleteMsgPort(m_replyport);
return true;
}
/* virtual */ bool Exit()
{
struct OTTDThreadStartupMessage *msg;
/* You can only exit yourself */
assert(IsCurrent());
/* If the thread is not running, we are already closed */
if (!IsRunning()) return false;
KPutStr("[Child] Aborting...\n");
if (NewGetTaskAttrs(NULL, &msg, sizeof(struct OTTDThreadStartupMessage *), TASKINFOTYPE_STARTUPMSG, TAG_DONE) && msg != NULL) {
/* For now we terminate by throwing an error, gives much cleaner cleanup */
throw 0;
}
return true;
}
/* virtual */ void Join()
{
struct OTTDThreadStartupMessage *reply;
/* You cannot join yourself */
assert(!IsCurrent());
KPutStr("[OpenTTD] Join threads...\n");
KPutStr("[OpenTTD] Wait for child to quit...\n");
WaitPort(m_replyport);
GetMsg(m_replyport);
DeleteMsgPort(m_replyport);
m_thr = 0;
}
/* virtual */ bool IsCurrent()
{
return FindTask(NULL) == m_thr;
}
/* virtual */ uint GetId()
{
return (uint)m_thr;
}
private:
/**
* On thread creation, this function is called, which calls the real startup
* function. This to get back into the correct instance again.
*/
static void Proxy(void)
{
struct Task *child = FindTask(NULL);
struct OTTDThreadStartupMessage *msg;
/* Make sure, we don't block the parent. */
SetTaskPri(child, -5);
KPutStr("[Child] Progressing...\n");
if (NewGetTaskAttrs(NULL, &msg, sizeof(struct OTTDThreadStartupMessage *), TASKINFOTYPE_STARTUPMSG, TAG_DONE) && msg != NULL) {
try {
msg->func(msg->arg);
} catch(...) {
KPutStr("[Child] Returned to main()\n");
}
}
/* Quit the child, exec.library will reply the startup msg internally. */
KPutStr("[Child] Done.\n");
}
};
/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
{
return new ThreadObject_MorphOS(proc, param);
}
/* static */ ThreadObject *ThreadObject::AttachCurrent()
{
return new ThreadObject_MorphOS();
}
/* static */ uint ThreadObject::CurrentId()
{
return (uint) FindTask(NULL);
}
/**
* MorphOS version of ThreadSemaphore.
*/
class ThreadSemaphore_MorphOS : public ThreadSemaphore {
private:
struct SignalSemaphore m_sem;
public:
ThreadSemaphore_MorphOS()
{
InitSemaphore(&m_sem);
}
/* virtual */ ~ThreadSemaphore_MorphOS()
{
}
/* virtual */ void Set()
{
/* Check if semaphore count is really important there. */
ReleaseSemaphore(&m_sem);
}
/* virtual */ void Wait()
{
ObtainSemaphore(&m_sem);
}
};
/* static */ ThreadSemaphore *ThreadSemaphore::New()
{
return new ThreadSemaphore_MorphOS();
}
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