test_mmx.cpp

Go to the documentation of this file.

#if defined(_MSC_VER) && (_MSC_VER <= 1200)
    #pragma warning(disable:4514)
    #pragma warning(disable:4786)
#endif
#include <stdio.h>
#include <stdlib.h>
#include "../../include.mie/mie_thread.h"
#include "xbyak/xbyak.h"
 
class WriteMMX : public Xbyak::CodeGenerator {
public:
    WriteMMX()
    {
#ifdef XBYAK32
        mov(ecx, ptr [esp + 4]);
#endif
        movd(mm0, ecx);
        ret();
    }
    void (*set() const)(int x) { return (void (*)(int x))getCode(); }
};
 
class ReadMMX : public Xbyak::CodeGenerator {
public:
    ReadMMX()
    {
        movd(eax, mm0);
        ret();
    }
    int (*get() const)() { return (int (*)())getCode(); }
};
 
class Test : public MIE::ThreadBase<Test> {
    int n_;
public:
    Test(int n)
        : n_(n)
    {
    }
    void threadEntry()
    {
        printf("n=%d\n", n_);
        WriteMMX w;
        w.set()(n_);
        ReadMMX r;
        for (;;) {
            int b = r.get()();
            printf("b=%d\n", b);
            if (b != n_) {
                printf("mm0 has changed!\n");
            }
            MIE::MIE_Sleep(1000);
        }
    }
    void stopThread() { }
};
 
int main(int argc, char *argv[])
{
#ifdef XBYAK32
    puts("32bit");
#else
    puts("64bit");
#endif
    try {
        int n = atoi(argc == 1 ? "1223" : argv[1]);
        Test test0(n), test1(n + 1);
        test0.beginThread();
        test1.beginThread();
 
        test0.joinThread();
        test1.joinThread();
    } catch (std::exception& e) {
        printf("ERR:%s\n", e.what());
    } catch (...) {
        printf("unknown error\n");
    }
}