Branch amsss test to make stress test for ams with headers.

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 Change: 29042
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mps/code/amssshe.c

@@ -0,0 +1,174 @@
+/* impl.c.amsss: POOL CLASS AMS STRESS TEST
+ *
+ * $Id$
+ * Copyright (c) 2001 Ravenbrook Limited.
+ *
+ * .design: Adapted from amcss.c, but not counting collections, just
+ * total size of objects allocated (because epoch doesn't increment
+ * when AMS is collected).
+ */
+
+#include "fmtdy.h"
+#include "testlib.h"
+#include "mpscams.h"
+#include "mpsavm.h"
+#include "mpstd.h"
+#ifdef MPS_OS_W3
+#include "mpsw3.h"
+#endif
+#include "mps.h"
+#include <stdlib.h>
+#include <stdarg.h>
+#include <math.h>
+#include <string.h>
+
+
+#define exactRootsCOUNT 50
+#define ambigRootsCOUNT 100
+/* This is enough for three GCs. */
+#define totalSizeMAX    800 * (size_t)1024
+#define totalSizeSTEP   200 * (size_t)1024
+/* objNULL needs to be odd so that it's ignored in exactRoots. */
+#define objNULL         ((mps_addr_t)0xDECEA5ED)
+#define testArenaSIZE   ((size_t)16<<20)
+#define initTestFREQ    6000
+static mps_gen_param_s testChain[1] = { { 160, 0.90 } };
+
+
+static mps_pool_t pool;
+static mps_ap_t ap;
+static mps_addr_t exactRoots[exactRootsCOUNT];
+static mps_addr_t ambigRoots[ambigRootsCOUNT];
+static size_t totalSize = 0;
+
+
+static mps_addr_t make(void)
+{
+  size_t length = rnd() % 20, size = (length+2) * sizeof(mps_word_t);
+  mps_addr_t p;
+  mps_res_t res;
+
+  do {
+    MPS_RESERVE_BLOCK(res, p, ap, size);
+    if(res)
+      die(res, "MPS_RESERVE_BLOCK");
+    res = dylan_init(p, size, exactRoots, exactRootsCOUNT);
+    if(res)
+      die(res, "dylan_init");
+  } while(!mps_commit(ap, p, size));
+
+  totalSize += size;
+  return p;
+}
+
+
+static void *test(void *arg, size_t s)
+{
+  mps_arena_t arena;
+  mps_fmt_t format;
+  mps_chain_t chain;
+  mps_root_t exactRoot, ambigRoot;
+  size_t lastStep = 0, i, r;
+  unsigned long objs;
+  mps_ap_t busy_ap;
+  mps_addr_t busy_init;
+
+  arena = (mps_arena_t)arg;
+  (void)s; /* unused */
+
+  die(mps_fmt_create_A(&format, arena, dylan_fmt_A()), "fmt_create");
+  die(mps_chain_create(&chain, arena, 1, testChain), "chain_create");
+  die(mps_pool_create(&pool, arena, mps_class_ams(), format, chain),
+      "pool_create(ams)");
+
+  die(mps_ap_create(&ap, pool, MPS_RANK_EXACT), "BufferCreate");
+  die(mps_ap_create(&busy_ap, pool, MPS_RANK_EXACT), "BufferCreate 2");
+
+  for(i = 0; i < exactRootsCOUNT; ++i)
+    exactRoots[i] = objNULL;
+  for(i = 0; i < ambigRootsCOUNT; ++i)
+    ambigRoots[i] = (mps_addr_t)rnd();
+
+  die(mps_root_create_table_masked(&exactRoot, arena,
+                                   MPS_RANK_EXACT, (mps_rm_t)0,
+                                   &exactRoots[0], exactRootsCOUNT,
+                                   (mps_word_t)1),
+      "root_create_table(exact)");
+  die(mps_root_create_table(&ambigRoot, arena,
+                            MPS_RANK_AMBIG, (mps_rm_t)0,
+                            &ambigRoots[0], ambigRootsCOUNT),
+      "root_create_table(ambig)");
+
+  /* create an ap, and leave it busy */
+  die(mps_reserve(&busy_init, busy_ap, 64), "mps_reserve busy");
+
+  objs = 0;
+  while(totalSize < totalSizeMAX) {
+    if(totalSize > lastStep + totalSizeSTEP) {
+      lastStep = totalSize;
+      printf("\nSize %lu bytes, %lu objects.\n",
+             (unsigned long)totalSize, objs);
+      fflush(stdout);
+      for(i = 0; i < exactRootsCOUNT; ++i)
+        cdie(exactRoots[i] == objNULL || dylan_check(exactRoots[i]),
+             "all roots check");
+    }
+
+    r = (size_t)rnd();
+    if(r & 1) {
+      i = (r >> 1) % exactRootsCOUNT;
+      if(exactRoots[i] != objNULL)
+        cdie(dylan_check(exactRoots[i]), "dying root check");
+      exactRoots[i] = make();
+      if(exactRoots[(exactRootsCOUNT-1) - i] != objNULL)
+        dylan_write(exactRoots[(exactRootsCOUNT-1) - i],
+                    exactRoots, exactRootsCOUNT);
+    } else {
+      i = (r >> 1) % ambigRootsCOUNT;
+      ambigRoots[(ambigRootsCOUNT-1) - i] = make();
+      /* Create random interior pointers */
+      ambigRoots[i] = (mps_addr_t)((char *)(ambigRoots[i/2]) + 1);
+    }
+
+    if(rnd() % initTestFREQ == 0)
+      *(int*)busy_init = -1; /* check that the buffer is still there */
+
+    ++objs;
+    if (objs % 256 == 0) {
+      printf(".");
+      fflush(stdout);
+    }
+  }
+
+  (void)mps_commit(busy_ap, busy_init, 64);
+  mps_ap_destroy(busy_ap);
+  mps_ap_destroy(ap);
+  mps_root_destroy(exactRoot);
+  mps_root_destroy(ambigRoot);
+  mps_pool_destroy(pool);
+  mps_chain_destroy(chain);
+  mps_fmt_destroy(format);
+
+  return NULL;
+}
+
+
+int main(int argc, char **argv)
+{
+  mps_arena_t arena;
+  mps_thr_t thread;
+  void *r;
+
+  randomize(argc, argv);
+
+  die(mps_arena_create(&arena, mps_arena_class_vm(), testArenaSIZE),
+      "arena_create");
+  die(mps_thread_reg(&thread, arena), "thread_reg");
+  mps_tramp(&r, test, arena, 0);
+  mps_thread_dereg(thread);
+  mps_arena_destroy(arena);
+
+  fflush(stdout); /* synchronize */
+  fprintf(stderr, "\nConclusion:  Failed to find any defects.\n");
+  return 0;
+}