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main: threaded simulation

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The actual computation is embarrassingly parallelised - the only part
that requires a mutex is the picking of any two programs due to the
fact that both programs may be affected following a compute block.
This is why we do a uniqueness check in thread_pick.
This commit is contained in:
Aryadev Chavali
2026-03-10 22:19:34 +00:00
parent 30f8e65cc2
commit fabd593eff
3 changed files with 115 additions and 39 deletions
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20
src/simulation.h
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@@ -9,21 +9,35 @@
#define SIMULATION_H
#include "program_iter.h"
#include <stdatomic.h>
#include <threads.h>
#define NUM_PROGRAMS_POW_2 10
#define NUM_PROGRAMS (1LU << NUM_PROGRAMS_POW_2)
#define SIMULATION_SIZE (SIZEOF_PROGRAM * NUM_PROGRAMS)
#define THREAD_POOL 8
struct ThreadState
{
u64 p1, p2;
void *sim;
};
// Simulation is simply a massive tape. We pick two 64 byte portions of this
// buffer for our update procedure, which is based on program_iter.
struct Simulation
{
char buffer[SIMULATION_SIZE];
u64 p1, p2;
bool paused, stopped;
mtx_t mutex;
thrd_t threads[THREAD_POOL];
struct ThreadState states[THREAD_POOL];
};
void simulation_init(struct Simulation *sim);
void simulation_update(struct Simulation *sim);
void simulation_start(struct Simulation *sim);
void simulation_stop(struct Simulation *sim);
#endif