141 lines
2.7 KiB
C++
Executable File
141 lines
2.7 KiB
C++
Executable File
//scheduler thread relationships:
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//S-PPU <-> S-CPU <-> cartridge co-processor
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// <|>
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// S-SMP <-> S-DSP
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class Scheduler {
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public:
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cothread_t thread_snes;
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cothread_t thread_cpu; //S-CPU (5a22)
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cothread_t thread_cop; //cartridge co-processor (SuperFX, SA-1, ...)
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cothread_t thread_smp; //S-SMP (SPC700)
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cothread_t thread_ppu; //S-PPU
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cothread_t thread_dsp; //S-DSP
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enum ActiveThread {
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THREAD_CPU,
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THREAD_COP,
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THREAD_SMP,
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THREAD_PPU,
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THREAD_DSP,
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};
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struct {
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unsigned cpu_freq;
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unsigned smp_freq;
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ActiveThread active;
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int64_t cpucop;
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int64_t cpuppu;
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int64_t cpusmp;
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int64_t smpdsp;
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} clock;
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//==========
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//CPU <> COP
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//==========
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alwaysinline void sync_cpucop() {
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if(clock.cpucop < 0) {
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clock.active = THREAD_COP;
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co_switch(thread_cop);
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}
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}
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alwaysinline void sync_copcpu() {
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if(clock.cpucop >= 0) {
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clock.active = THREAD_CPU;
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co_switch(thread_cpu);
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}
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}
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//==========
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//CPU <> PPU
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//==========
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alwaysinline void sync_cpuppu() {
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if(clock.cpuppu < 0) {
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clock.active = THREAD_PPU;
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co_switch(thread_ppu);
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}
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}
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alwaysinline void sync_ppucpu() {
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if(clock.cpuppu >= 0) {
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clock.active = THREAD_CPU;
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co_switch(thread_cpu);
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}
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}
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//==========
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//CPU <> SMP
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//==========
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alwaysinline void sync_cpusmp() {
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if(clock.cpusmp < 0) {
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clock.active = THREAD_SMP;
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co_switch(thread_smp);
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}
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}
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alwaysinline void sync_smpcpu() {
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if(clock.cpusmp >= 0) {
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clock.active = THREAD_CPU;
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co_switch(thread_cpu);
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}
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}
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//==========
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//SMP <> DSP
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//==========
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alwaysinline void sync_smpdsp() {
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if(clock.smpdsp < 0) {
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clock.active = THREAD_DSP;
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co_switch(thread_dsp);
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}
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}
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alwaysinline void sync_dspsmp() {
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if(clock.smpdsp >= 0) {
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clock.active = THREAD_SMP;
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co_switch(thread_smp);
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}
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}
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//==========
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//add clocks
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//==========
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alwaysinline void addclocks_cpu(unsigned clocks) {
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clock.cpucop -= clocks;
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clock.cpuppu -= clocks;
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clock.cpusmp -= clocks * (uint64_t)clock.smp_freq;
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}
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alwaysinline void addclocks_cop(unsigned clocks) {
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clock.cpucop += clocks;
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}
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alwaysinline void addclocks_ppu(unsigned clocks) {
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clock.cpuppu += clocks;
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}
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alwaysinline void addclocks_smp(unsigned clocks) {
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clock.cpusmp += clocks * (uint64_t)clock.cpu_freq;
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clock.smpdsp -= clocks;
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}
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alwaysinline void addclocks_dsp(unsigned clocks) {
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clock.smpdsp += clocks;
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}
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void enter();
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void exit();
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void init();
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Scheduler();
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};
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extern Scheduler scheduler;
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