Atlas - SDL_systhread.c
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[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#ifdef SDL_THREAD_PSP
24
25// PSP thread management routines for SDL
26
27#include <stdio.h>
28#include <stdlib.h>
29
30#include "../SDL_systhread.h"
31#include "../SDL_thread_c.h"
32#include <pspkerneltypes.h>
33#include <pspthreadman.h>
34
35#define PSP_THREAD_NAME_MAX 32
36
37static int ThreadEntry(SceSize args, void *argp)
38{
39    SDL_RunThread(*(SDL_Thread **)argp);
40    return 0;
41}
42
43bool SDL_SYS_CreateThread(SDL_Thread *thread,
44                          SDL_FunctionPointer pfnBeginThread,
45                          SDL_FunctionPointer pfnEndThread)
46{
47    SceKernelThreadInfo status;
48    int priority = 32;
49    char thread_name[PSP_THREAD_NAME_MAX];
50
51    // Set priority of new thread to the same as the current thread
52    status.size = sizeof(SceKernelThreadInfo);
53    if (sceKernelReferThreadStatus(sceKernelGetThreadId(), &status) == 0) {
54        priority = status.currentPriority;
55    }
56
57    SDL_strlcpy(thread_name, "SDL thread", PSP_THREAD_NAME_MAX);
58    if (thread->name) {
59        SDL_strlcpy(thread_name, thread->name, PSP_THREAD_NAME_MAX);
60    }
61
62    thread->handle = sceKernelCreateThread(thread_name, ThreadEntry,
63                                           priority, thread->stacksize ? ((int)thread->stacksize) : 0x8000,
64                                           PSP_THREAD_ATTR_VFPU, NULL);
65    if (thread->handle < 0) {
66        return SDL_SetError("sceKernelCreateThread() failed");
67    }
68
69    sceKernelStartThread(thread->handle, 4, &thread);
70    return true;
71}
72
73void SDL_SYS_SetupThread(const char *name)
74{
75    // Do nothing.
76}
77
78SDL_ThreadID SDL_GetCurrentThreadID(void)
79{
80    return (SDL_ThreadID)sceKernelGetThreadId();
81}
82
83void SDL_SYS_WaitThread(SDL_Thread *thread)
84{
85    sceKernelWaitThreadEnd(thread->handle, NULL);
86    sceKernelDeleteThread(thread->handle);
87}
88
89void SDL_SYS_DetachThread(SDL_Thread *thread)
90{
91    // !!! FIXME: is this correct?
92    sceKernelDeleteThread(thread->handle);
93}
94
95void SDL_SYS_KillThread(SDL_Thread *thread)
96{
97    sceKernelTerminateDeleteThread(thread->handle);
98}
99
100bool SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority)
101{
102    int value;
103
104    if (priority == SDL_THREAD_PRIORITY_LOW) {
105        value = 111;
106    } else if (priority == SDL_THREAD_PRIORITY_HIGH) {
107        value = 32;
108    } else if (priority == SDL_THREAD_PRIORITY_TIME_CRITICAL) {
109        value = 16;
110    } else {
111        value = 50;
112    }
113
114    if (sceKernelChangeThreadPriority(sceKernelGetThreadId(), value) < 0) {
115        return SDL_SetError("sceKernelChangeThreadPriority() failed");
116    }
117    return true;
118}
119
120#endif // SDL_THREAD_PSP
121
[FILE END]
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