Branch imports for masters.

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1 files changed, 227 insertions, 0 deletions

diff --git a/mps/code/amcss.c b/mps/code/amcss.c
new file mode 100644
index 00000000000..29ab71d2a5a
--- /dev/null
+++ b/mps/code/amcss.c
@@ -0,0 +1,227 @@
+/* impl.c.amcss: POOL CLASS AMC STRESS TEST
+ *
+ * $HopeName: MMsrc!amcss.c(trunk.36) $
+ * Copyright (C) 2001 Harlequin Limited.  All rights reserved.
+ */
+
+#include "fmtdy.h"
+#include "testlib.h"
+#include "mpscamc.h"
+#include "mpsavm.h"
+#include "mpstd.h"
+#ifdef MPS_OS_W3
+#include "mpsw3.h"
+#endif
+#include "mps.h"
+#include <stdlib.h>
+#include <string.h>
+
+
+/* These values have been tuned to cause one top-generation collection. */
+#define testArenaSIZE     ((size_t)1000*1024)
+#define avLEN             3
+#define exactRootsCOUNT   200
+#define ambigRootsCOUNT   50
+#define genCOUNT          2
+#define collectionsCOUNT  37
+#define rampSIZE          9
+#define initTestFREQ      6000
+
+/* testChain -- generation parameters for the test */
+
+static mps_gen_param_s testChain[genCOUNT] = {
+  { 150, 0.85 }, { 170, 0.45 } };
+
+
+/* objNULL needs to be odd so that it's ignored in exactRoots. */
+#define objNULL           ((mps_addr_t)0xDECEA5ED)
+
+static mps_pool_t pool;
+static mps_ap_t ap;
+static mps_addr_t exactRoots[exactRootsCOUNT];
+static mps_addr_t ambigRoots[ambigRootsCOUNT];
+
+
+static mps_addr_t make(void)
+{
+  size_t length = rnd() % (2*avLEN);
+  size_t 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));
+
+  return p;
+}
+
+
+static void test_stepper(mps_addr_t object, mps_fmt_t fmt, mps_pool_t pol,
+                         void *p, size_t s)
+{
+  testlib_unused(object); testlib_unused(fmt); testlib_unused(pol);
+  testlib_unused(s);
+  (*(unsigned long *)p)++;
+}
+
+
+/* test -- the body of the test */
+
+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;
+  unsigned long objs; size_t i;
+  mps_word_t collections, rampSwitch;
+  mps_alloc_pattern_t ramp = mps_alloc_pattern_ramp();
+  int ramping;
+  mps_ap_t busy_ap;
+  mps_addr_t busy_init;
+
+  arena = (mps_arena_t)arg;
+  (void)s; /* unused */
+
+  die(dylan_fmt(&format, arena), "fmt_create");
+  die(mps_chain_create(&chain, arena, genCOUNT, testChain), "chain_create");
+
+  die(mps_pool_create(&pool, arena, mps_class_amc(), format, chain),
+      "pool_create(amc)");
+
+  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");
+
+  collections = 0;
+  rampSwitch = rampSIZE;
+  mps_ap_alloc_pattern_begin(ap, ramp);
+  mps_ap_alloc_pattern_begin(busy_ap, ramp);
+  ramping = 1;
+  objs = 0;
+  while(collections < collectionsCOUNT) {
+    unsigned long c;
+    size_t r;
+
+    c = mps_collections(arena);
+
+    if(collections != c) {
+      collections = c;
+      printf("\nCollection %lu, %lu objects.\n",
+             c, objs);
+      for(r = 0; r < exactRootsCOUNT; ++r)
+        cdie(exactRoots[r] == objNULL || dylan_check(exactRoots[r]),
+             "all roots check");
+      if(collections == collectionsCOUNT / 2) {
+        unsigned long object_count = 0;
+        mps_arena_park(arena);
+        mps_arena_formatted_objects_walk(arena, test_stepper, &object_count, 0);
+        mps_arena_release(arena);
+        printf("stepped on %lu objects.\n", object_count);
+      }
+      if(collections == rampSwitch) {
+        rampSwitch += rampSIZE;
+        if(ramping) {
+          mps_ap_alloc_pattern_end(ap, ramp);
+          mps_ap_alloc_pattern_end(busy_ap, ramp);
+          /* kill half of the roots */
+          for(i = 0; i < exactRootsCOUNT; i += 2) {
+            if(exactRoots[i] != objNULL) {
+              cdie(dylan_check(exactRoots[i]), "ramp kill check");
+              exactRoots[i] = objNULL;
+            }
+          }
+          /* Every other time, switch back immediately. */
+          if(collections & 1) ramping = 0;
+        }
+        if(!ramping) {
+          mps_ap_alloc_pattern_begin(ap, ramp);
+          mps_ap_alloc_pattern_begin(busy_ap, ramp);
+          ramping = 1;
+        }
+      }
+    }
+
+    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(r % initTestFREQ == 0)
+      *(int*)busy_init = -1; /* check that the buffer is still there */
+
+    if(objs % 1024 == 0) {
+      putchar('.');
+      fflush(stdout);
+    }
+
+    ++objs;
+  }
+
+  (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(), 2*testArenaSIZE),
+      "arena_create");
+  die(mps_arena_commit_limit_set(arena, testArenaSIZE), "set limit");
+  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;
+}