1/*
2    SDL - Simple DirectMedia Layer
3    Copyright (C) 1997-2012 Sam Lantinga
4
5    This library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Library General Public
7    License as published by the Free Software Foundation; either
8    version 2 of the License, or (at your option) any later version.
9
10    This library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Library General Public License for more details.
14
15    You should have received a copy of the GNU Library General Public
16    License along with this library; if not, write to the Free
17    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
19    Sam Lantinga
20    slouken@devolution.com
21*/
22
23/*
24    SDL_systhread.cpp
25    Epoc thread management routines for SDL
26
27    Epoc version by Markus Mertama  (w@iki.fi)
28*/
29
30#include "epoc_sdl.h"
31
32//#include <stdlib.h>
33//#include <stdio.h>
34
35
36
37extern "C" {
38#undef NULL
39#include "SDL_error.h"
40#include "SDL_thread.h"
41#include "SDL_systhread.h"
42#include "SDL_thread_c.h"
43    }
44
45#include <e32std.h>
46#include "epoc_sdl.h"
47
48
49static int object_count;
50
51int RunThread(TAny* data)
52{
53	CTrapCleanup* cleanup = CTrapCleanup::New();
54	TRAPD(err, SDL_RunThread(data));
55	EpocSdlEnv::CleanupItems();
56	delete cleanup;
57	return(err);
58}
59
60
61TInt NewThread(const TDesC& aName, TAny* aPtr1, TAny* aPtr2)
62    {
63    return ((RThread*)(aPtr1))->Create(aName,
64            RunThread,
65            KDefaultStackSize,
66            NULL,
67            aPtr2);
68    }
69
70int CreateUnique(TInt (*aFunc)(const TDesC& aName, TAny*, TAny*), TAny* aPtr1, TAny* aPtr2)
71    {
72    TBuf<16> name;
73    TInt status = KErrNone;
74    do
75        {
76        object_count++;
77        name.Format(_L("SDL_%x"), object_count);
78        status = aFunc(name, aPtr1, aPtr2);
79        }
80        while(status == KErrAlreadyExists);
81    return status;
82    }
83
84
85int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
86{
87    RThread rthread;
88
89    const TInt status = CreateUnique(NewThread, &rthread, args);
90    if (status != KErrNone)
91    {
92        delete(((RThread*)(thread->handle)));
93        thread->handle = NULL;
94		SDL_SetError("Not enough resources to create thread");
95		return(-1);
96	}
97	rthread.Resume();
98    thread->handle = rthread.Handle();
99	return(0);
100}
101
102void SDL_SYS_SetupThread(void)
103{
104	return;
105}
106
107Uint32 SDL_ThreadID(void)
108{
109    RThread current;
110    const TThreadId id = current.Id();
111	return id;
112}
113
114void SDL_SYS_WaitThread(SDL_Thread *thread)
115{
116    SDL_TRACE1("Close thread", thread);
117    RThread t;
118    const TInt err = t.Open(thread->threadid);
119    if(err == KErrNone && t.ExitType() == EExitPending)
120        {
121        TRequestStatus status;
122        t.Logon(status);
123        User::WaitForRequest(status);
124        }
125    t.Close();
126
127  /*  RUndertaker taker;
128    taker.Create();
129    TRequestStatus status;
130    taker.Logon(status, thread->handle);
131    User::WaitForRequest(status);
132    taker.Close();*/
133    SDL_TRACE1("Closed thread", thread);
134}
135
136/* WARNING: This function is really a last resort.
137 * Threads should be signaled and then exit by themselves.
138 * TerminateThread() doesn't perform stack and DLL cleanup.
139 */
140void SDL_SYS_KillThread(SDL_Thread *thread)
141{
142    RThread rthread;
143    rthread.SetHandle(thread->handle);
144	rthread.Kill(0);
145	rthread.Close();
146}
147