/* 
TEST_HEADER
 id = $Id: //info.ravenbrook.com/project/mps/version/1.113/test/function/52.c#1 $
 summary = provoke mad behaviour by constant allocation
 language = c
 link = rankfmt.o testlib.o
END_HEADER
*/

/* this is based on MMQA_test_function!4.c, but with no user-input
*/

#include <time.h>
#include "testlib.h"
#include "mpscamc.h"
#include "mpsavm.h"
#include "rankfmt.h"


#define genCOUNT (3)

static mps_gen_param_s testChain[genCOUNT] = {
  { 6000, 0.90 }, { 8000, 0.65 }, { 16000, 0.50 } };


void *stackpointer;


static void test(void)
{
 mps_arena_t arena;
 mps_pool_t pool;
 mps_thr_t thread;
 mps_root_t root, root1;

 mps_fmt_t format;
 mps_chain_t chain;
 mps_ap_t ap;

 mycell *a[3];

 int i,j,k;
 clock_t time0, time1;

 formatcomments = 1;

 cdie(mps_arena_create(&arena, mps_arena_class_vm(), (size_t)1024*1024*30),
      "create arena");

 cdie(mps_thread_reg(&thread, arena), "register thread");

 cdie(mps_root_create_table(&root, arena, mps_rank_ambig(), 0,
                            (mps_addr_t*)&a[0], 3),
      "create table root");
  cdie(mps_root_create_table(&root1, arena, mps_rank_ambig(), 0,
                            (mps_addr_t *)&exfmt_root, 1),
      "exfmt root");

 cdie(mps_fmt_create_A(&format, arena, &fmtA),
      "create format");
 cdie(mps_chain_create(&chain, arena, genCOUNT, testChain), "chain_create");

 die(mmqa_pool_create_chain(&pool, arena, mps_class_amc(), format, chain),
     "create pool");

 cdie(mps_ap_create(&ap, pool, mps_rank_exact()),
      "create ap");

 time0 = clock();
 asserts(time0 != -1, "processor time not available");

 for (k=0; k<100; k++) {

  for (j=0; j<100; j++) {
   a[0] = allocone(ap, 50, mps_rank_exact());
   a[1] = a[0];

   for (i=1; i<100; i++) {
     a[2] = allocone(ap, 50, mps_rank_exact());
     setref(a[1], 0, a[2]);
     a[1] = a[2];
   }
  }

  time1 = clock();
  comment("%d: %i", k, (int) (100*(time1-time0)/CLOCKS_PER_SEC));
  time0 = time1;
 }

 mps_ap_destroy(ap);
 mps_pool_destroy(pool);
 mps_chain_destroy(chain);
 mps_fmt_destroy(format);
 mps_root_destroy(root);
 mps_root_destroy(root1);
 mps_thread_dereg(thread);
 mps_arena_destroy(arena);
 comment("Destroyed arena.");
}


int main(void)
{
 void *m;
 stackpointer=&m; /* hack to get stack pointer */

 easy_tramp(test);
 pass();
 return 0;
}
