134 lines
3.9 KiB
C
134 lines
3.9 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#ifdef SDL_THREAD_VITA
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/* VITA thread management routines for SDL */
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#include <stdio.h>
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#include <stdlib.h>
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#include "../SDL_systhread.h"
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#include "../SDL_thread_c.h"
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#include <psp2/types.h>
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#include <psp2/kernel/threadmgr.h>
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#define VITA_THREAD_STACK_SIZE_MIN 0x1000 // 4KiB
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#define VITA_THREAD_STACK_SIZE_MAX 0x2000000 // 32MiB
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#define VITA_THREAD_STACK_SIZE_DEFAULT 0x10000 // 64KiB
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#define VITA_THREAD_NAME_MAX 32
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#define VITA_THREAD_PRIORITY_LOW 191
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#define VITA_THREAD_PRIORITY_NORMAL 160
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#define VITA_THREAD_PRIORITY_HIGH 112
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#define VITA_THREAD_PRIORITY_TIME_CRITICAL 64
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static int ThreadEntry(SceSize args, void *argp)
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{
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SDL_RunThread(*(SDL_Thread **)argp);
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return 0;
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}
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int SDL_SYS_CreateThread(SDL_Thread *thread)
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{
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char thread_name[VITA_THREAD_NAME_MAX];
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size_t stack_size = VITA_THREAD_STACK_SIZE_DEFAULT;
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SDL_strlcpy(thread_name, "SDL thread", VITA_THREAD_NAME_MAX);
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if (thread->name) {
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SDL_strlcpy(thread_name, thread->name, VITA_THREAD_NAME_MAX);
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}
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if (thread->stacksize) {
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if (thread->stacksize < VITA_THREAD_STACK_SIZE_MIN) {
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thread->stacksize = VITA_THREAD_STACK_SIZE_MIN;
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}
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if (thread->stacksize > VITA_THREAD_STACK_SIZE_MAX) {
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thread->stacksize = VITA_THREAD_STACK_SIZE_MAX;
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}
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stack_size = thread->stacksize;
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}
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/* Create new thread with the same priority as the current thread */
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thread->handle = sceKernelCreateThread(
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thread_name, // name
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ThreadEntry, // function to run
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0, // priority. 0 means priority of calling thread
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stack_size, // stack size
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0, // attributes. always 0
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0, // cpu affinity mask. 0 = all CPUs
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NULL // opt. always NULL
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);
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if (thread->handle < 0) {
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return SDL_SetError("sceKernelCreateThread() failed");
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}
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sceKernelStartThread(thread->handle, 4, &thread);
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return 0;
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}
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void SDL_SYS_SetupThread(const char *name)
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{
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/* Do nothing. */
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}
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SDL_threadID SDL_ThreadID(void)
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{
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return (SDL_threadID)sceKernelGetThreadId();
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}
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void SDL_SYS_WaitThread(SDL_Thread *thread)
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{
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sceKernelWaitThreadEnd(thread->handle, NULL, NULL);
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sceKernelDeleteThread(thread->handle);
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}
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void SDL_SYS_DetachThread(SDL_Thread *thread)
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{
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/* Do nothing. */
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}
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int SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority)
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{
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int value = VITA_THREAD_PRIORITY_NORMAL;
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switch (priority) {
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case SDL_THREAD_PRIORITY_LOW:
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value = VITA_THREAD_PRIORITY_LOW;
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break;
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case SDL_THREAD_PRIORITY_NORMAL:
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value = VITA_THREAD_PRIORITY_NORMAL;
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break;
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case SDL_THREAD_PRIORITY_HIGH:
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value = VITA_THREAD_PRIORITY_HIGH;
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break;
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case SDL_THREAD_PRIORITY_TIME_CRITICAL:
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value = VITA_THREAD_PRIORITY_TIME_CRITICAL;
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break;
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}
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return sceKernelChangeThreadPriority(0, value);
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}
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#endif /* SDL_THREAD_VITA */
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