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Exzap 2022-08-22 22:21:23 +02:00
parent e3db07a16a
commit d60742f52b
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src/util/Fiber/FiberUnix.cpp Normal file
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#include "Fiber.h"
#if BOOST_OS_LINUX
#include <ucontext.h>
thread_local Fiber* sCurrentFiber{};
Fiber::Fiber(void(*FiberEntryPoint)(void* userParam), void* userParam, void* privateData) : m_privateData(privateData)
{
ucontext_t* ctx = (ucontext_t*)malloc(sizeof(ucontext_t));
const size_t stackSize = 2 * 1024 * 1024;
m_stackPtr = malloc(stackSize);
getcontext(ctx);
ctx->uc_stack.ss_sp = m_stackPtr;
ctx->uc_stack.ss_size = stackSize;
ctx->uc_link = &ctx[0];
makecontext(ctx, (void(*)())FiberEntryPoint, 1, userParam);
this->m_implData = (void*)ctx;
}
Fiber::Fiber(void* privateData) : m_privateData(privateData)
{
ucontext_t* ctx = (ucontext_t*)malloc(sizeof(ucontext_t));
getcontext(ctx);
this->m_implData = (void*)ctx;
m_stackPtr = nullptr;
}
Fiber::~Fiber()
{
if(m_stackPtr)
free(m_stackPtr);
free(m_implData);
}
Fiber* Fiber::PrepareCurrentThread(void* privateData)
{
cemu_assert_debug(sCurrentFiber == nullptr);
sCurrentFiber = new Fiber(privateData);
return sCurrentFiber;
}
void Fiber::Switch(Fiber& targetFiber)
{
Fiber* leavingFiber = sCurrentFiber;
sCurrentFiber = &targetFiber;
swapcontext((ucontext_t*)(leavingFiber->m_implData), (ucontext_t*)(targetFiber.m_implData));
}
void* Fiber::GetFiberPrivateData()
{
return sCurrentFiber->m_privateData;
}
#endif