New unit

new test (actually it's half written, but I won't change it now)

Copied from Perforce
 Change: 19323
 ServerID: perforce.ravenbrook.com

mps/qa/function/96.c

@@ -0,0 +1,161 @@
+/* TEST_HEADER
+ summary = low memory tests with AMC (and using MV)
+ language = c
+ link = testlib.o rankfmt.o
+END_HEADER
+*/
+
+#include "testlib.h"
+#include "mpscamc.h"
+#include "mpscmv.h"
+#include "mpsavm.h"
+#include "rankfmt.h"
+
+void *stackpointer;
+
+mps_pool_t poolmv;
+mps_space_t space;
+
+static void fillup(void) {
+ size_t size;
+ mps_addr_t a;
+ char *b;
+
+ mps_pool_create(&poolmv, space, mps_class_mv(), 64, 64, 64);
+ size=1024ul*1024ul;
+ while (size) {
+  while (mps_alloc(&a, poolmv, size)==MPS_RES_OK) {
+   for(b=a; b<(char *)a+size; b++) {
+    *b = 97;
+   }
+  }
+  size = size / 2;
+ }
+}
+
+static void empty(void) {
+ mps_pool_destroy(poolmv);
+}
+
+static void test(void)
+{
+ mps_pool_t pool;
+ mps_thr_t thread;
+ mps_root_t root, root1;
+
+ mps_fmt_t format;
+ mps_ap_t ap;
+
+ mycell *a, *b;
+ mps_addr_t addr;
+
+ mps_res_t res;
+ int j;
+
+/* create an arena that can't grow beyond 30 M */
+
+ cdie(mps_arena_create(&space, mps_arena_class_vm(), (size_t) (1024*1024*30)),
+  "create arena");
+
+ cdie(mps_thread_reg(&thread, space), "register thread");
+
+ cdie(
+  mps_root_create_reg(&root, space, MPS_RANK_AMBIG, 0, thread,
+   mps_stack_scan_ambig, stackpointer, 0),
+  "create root");
+
+ cdie(
+  mps_root_create_table(&root1,space,MPS_RANK_AMBIG,0,&exfmt_root,1),
+  "create table root");
+
+ cdie(
+  mps_fmt_create_A(&format, space, &fmtA),
+  "create format");
+
+ cdie(
+  mps_pool_create(&pool, space, mps_class_amc(), format),
+  "create pool");
+
+ cdie(
+  mps_ap_create(&ap, pool, MPS_RANK_EXACT),
+  "create ap");
+
+/* allocate 16 M of (live) stuff */
+
+ b = allocone(ap, 2, MPS_RANK_EXACT);
+ for (j=0; j<160; j++) {
+  a = allocone(ap, 2, MPS_RANK_EXACT);
+  setref(a, 0, b);
+  b = allocdumb(ap, 1024*100, MPS_RANK_EXACT);
+  setref(a, 1, b);
+  b = a;
+ }
+
+ comment("created 16M of live objects");
+
+
+/*
+ for (j=0; j<1000; j++) {
+  res=allocrdumb(&a, ap, 1024*1024, MPS_RANK_EXACT);
+ }
+*/
+
+ fillup();
+
+ comment("finalizing...");
+
+/*
+ addr = a;
+ for (j=0; j<100; j++) {
+  comment(err_text(mps_finalize(space, addr)));
+ }
+*/
+
+ comment("try to make collectm by allocating another 1G...");
+ 
+ empty();
+
+ for (j=0; j<1000*1024; j++) {
+  res=allocrdumb(&a, ap, 1024, MPS_RANK_EXACT);
+  if (res == MPS_RES_OK) {
+   comment("%i ok", j);
+  }
+ }
+
+ comment("collect world...");
+
+ for (j=0; j<1000; j++) {
+  mps_arena_collect(space);
+ }
+
+ mps_ap_destroy(ap);
+ comment("Destroyed ap.");
+
+ mps_pool_destroy(pool);
+ mps_pool_destroy(poolmv);
+ comment("Destroyed pool.");
+
+ mps_fmt_destroy(format);
+ comment("Destroyed format.");
+
+ mps_root_destroy(root);
+ mps_root_destroy(root1);
+ comment("Destroyed roots.");
+
+ mps_thread_dereg(thread);
+ comment("Deregistered thread.");
+
+ mps_space_destroy(space);
+ comment("Destroyed space.");
+
+}
+
+int main(void)
+{
+ void *m;
+ stackpointer=&m; /* hack to get stack pointer */
+
+ easy_tramp(test);
+ pass();
+ return 0;
+}