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#include <string.h>
#ifdef _WIN32
#include <windows.h>
#define THREAD_FUNCTION DWORD WINAPI
#else
#include <pthread.h>
#define THREAD_FUNCTION void *
#endif
#include <caml/mlvalues.h>
#include <caml/gc.h>
#include <caml/memory.h>
#include <caml/callback.h>
#include <caml/threads.h>
void *create_root(value v)
{
value *root = malloc(sizeof(value));
*root = v;
caml_register_generational_global_root(root);
return (void*)root;
}
value consume_root(void *r)
{
value *root = (value *)r;
value v = *root;
caml_remove_generational_global_root(root);
free(root);
return v;
}
THREAD_FUNCTION thread_func(void *root)
{
caml_c_thread_register();
caml_acquire_runtime_system();
caml_callback(consume_root(root), Val_unit);
caml_release_runtime_system();
caml_c_thread_unregister();
return 0;
}
value spawn_thread(value clos)
{
void *root = create_root(clos);
#if _WIN32
CloseHandle(CreateThread(NULL, 0, &thread_func, root, 0, NULL));
#else
pthread_t thr;
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_create(&thr, &attr, thread_func, root);
#endif
return Val_unit;
}
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