/* exposet0.c: ARENA EXPOSE TEST
*
* $Id: //info.ravenbrook.com/project/mps/custom/cet/version/1.114/code/exposet0.c#1 $
* Copyright (c) 2001-2014 Ravenbrook Limited. See end of file for license.
* Portions copyright (C) 2002 Global Graphics Software.
*
* The primary purpose of this test is to test that mps_arena_expose does
* not protect any pages. This is only tested to any real extent on
* Windows where an exception handler in test_stepper is used to catch any
* would-be exceptions (there aren't any if the MPS is operating
* correctly).
*
*/
#include "fmtdy.h"
#include "fmtdytst.h"
#include "testlib.h"
#include "mpslib.h"
#include "mpscamc.h"
#include "mpsavm.h"
#include "mpstd.h"
#include "mps.h"
#include <stdio.h> /* fflush, printf, puts, stdout */
/* These values have been tuned in the hope of getting one dynamic collection. */
#define testArenaSIZE ((size_t)1000*1024)
#define gen1SIZE ((size_t)150)
#define gen2SIZE ((size_t)170)
#define avLEN 3
#define exactRootsCOUNT 180
#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] = {
{ gen1SIZE, 0.85 }, { gen2SIZE, 0.45 } };
/* objNULL needs to be odd so that it's ignored in exactRoots. */
#define objNULL ((mps_addr_t)MPS_WORD_CONST(0xDECEA5ED))
static mps_pool_t pool_g;
static mps_ap_t ap;
static mps_addr_t exactRoots[exactRootsCOUNT];
static mps_addr_t ambigRoots[ambigRootsCOUNT];
/* report - report statistics from any terminated GCs */
static void report(mps_arena_t arena)
{
mps_message_t message;
static int nCollections = 0;
while (mps_message_get(&message, arena, mps_message_type_gc())) {
size_t live, condemned, not_condemned;
live = mps_message_gc_live_size(arena, message);
condemned = mps_message_gc_condemned_size(arena, message);
not_condemned = mps_message_gc_not_condemned_size(arena, message);
printf("\nCollection %d finished:\n", ++nCollections);
printf("live %"PRIuLONGEST"\n", (ulongest_t)live);
printf("condemned %"PRIuLONGEST"\n", (ulongest_t)condemned);
printf("not_condemned %"PRIuLONGEST"\n", (ulongest_t)not_condemned);
mps_message_discard(arena, message);
}
}
/* make -- create one new object */
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;
}
/* test_stepper -- stepping function for walk */
static void test_stepper(mps_addr_t object, mps_fmt_t fmt, mps_pool_t pool,
void *p, size_t s)
{
testlib_unused(fmt);
testlib_unused(pool);
testlib_unused(s);
dylan_mutate(object);
(*(unsigned long *)p)++;
}
/* test -- the body of the test */
static void *test(void *arg, size_t s)
{
mps_addr_t busy_init;
mps_ap_t busy_ap;
mps_arena_t arena;
mps_chain_t chain;
mps_fmt_t format;
mps_root_t exactRoot, ambigRoot;
mps_word_t collections;
size_t i;
unsigned long objs;
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_g, arena, mps_class_amc(), format, chain),
"pool_create(amc)");
die(mps_ap_create(&ap, pool_g, mps_rank_exact()), "BufferCreate");
die(mps_ap_create(&busy_ap, pool_g, mps_rank_exact()), "BufferCreate 2");
for(i = 0; i < exactRootsCOUNT; ++i) {
exactRoots[i] = objNULL;
}
for(i = 0; i < ambigRootsCOUNT; ++i) {
ambigRoots[i] = rnd_addr();
}
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;
objs = 0;
while (collections < collectionsCOUNT) {
mps_word_t c;
size_t r;
c = mps_collections(arena);
if (collections != c) {
collections = c;
printf("\nCollection %"PRIuLONGEST" started, %lu objects.\n",
(ulongest_t)c, objs);
report(arena);
for (i = 0; i < exactRootsCOUNT; ++i) {
cdie(exactRoots[i] == objNULL
|| (dylan_check(exactRoots[i])
&& mps_arena_has_addr(arena, exactRoots[i])),
"all roots check");
}
cdie(!mps_arena_has_addr(arena, NULL),
"NULL in arena");
{
unsigned long object_count = 0;
mps_arena_expose(arena);
mps_arena_formatted_objects_walk(arena, test_stepper, &object_count, 0);
mps_arena_release(arena);
printf("stepped on %lu objects.\n", object_count);
}
}
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) {
report(arena);
putchar('.');
(void)fflush(stdout);
}
++objs;
}
(void)mps_commit(busy_ap, busy_init, 64);
mps_arena_park(arena);
mps_ap_destroy(busy_ap);
mps_ap_destroy(ap);
mps_root_destroy(exactRoot);
mps_root_destroy(ambigRoot);
mps_pool_destroy(pool_g);
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;
testlib_init(argc, argv);
die(mps_arena_create(&arena, mps_arena_class_vm(), 2*testArenaSIZE),
"arena_create");
mps_message_type_enable(arena, mps_message_type_gc());
die(mps_arena_commit_limit_set(arena, 2*testArenaSIZE), "set limit");
die(mps_thread_reg(&thread, arena), "thread_reg");
mps_tramp(&r, test, arena, 0);
mps_thread_dereg(thread);
report(arena);
mps_arena_destroy(arena);
printf("%s: Conclusion: Failed to find any defects.\n", argv[0]);
return 0;
}
/* C. COPYRIGHT AND LICENSE
*
* Copyright (c) 2001-2014 Ravenbrook Limited <http://www.ravenbrook.com/>.
* All rights reserved. This is an open source license. Contact
* Ravenbrook for commercial licensing options.
*
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* modification, are permitted provided that the following conditions are
* met:
*
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*
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*
* 3. Redistributions in any form must be accompanied by information on how
* to obtain complete source code for this software and any accompanying
* software that uses this software. The source code must either be
* included in the distribution or be available for no more than the cost
* of distribution plus a nominal fee, and must be freely redistributable
* under reasonable conditions. For an executable file, complete source
* code means the source code for all modules it contains. It does not
* include source code for modules or files that typically accompany the
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*
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