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emacs/mps/code/amcsshe.c
Gareth Rees 66434ad027 Need more grains, otherwise there's so much wasted space in each grain that we don't meet the commit limit requirements. 
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2014-06-19 15:19:12 +01:00

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/* amcsshe.c: POOL CLASS AMC STRESS TEST WITH HEADER
*
* $Id$
* Copyright (c) 2001-2014 Ravenbrook Limited. See end of file for license.
* Portions copyright (c) 2002 Global Graphics Software.
*/
#include "fmthe.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, putchar */
/* These values have been tuned in the hope of getting one dynamic collection. */
#define headerFACTOR ((float)(20 + headerSIZE) / 20)
/* headerFACTOR measures how much larger objects are compared to fmtdy. */
#define testArenaSIZE ((size_t)(2000*headerFACTOR)*1024)
#define gen1SIZE ((size_t)(150*headerFACTOR))
#define gen2SIZE ((size_t)(170*headerFACTOR))
#define avLEN 3
#define exactRootsCOUNT 200
#define ambigRootsCOUNT 50
#define bogusRootsCOUNT 4096
#define collectionsCOUNT 37
#define rampSIZE 9
#define initTestFREQ 6000
#define genCOUNT 2
/* 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;
static mps_ap_t ap;
static mps_addr_t exactRoots[exactRootsCOUNT];
static mps_addr_t ambigRoots[ambigRootsCOUNT];
static mps_addr_t bogusRoots[bogusRootsCOUNT];
static mps_addr_t make(size_t roots_count)
{
size_t length = rnd() % (2*avLEN);
size_t size = (length+2) * sizeof(mps_word_t);
mps_addr_t p, userP;
mps_res_t res;
do {
MPS_RESERVE_BLOCK(res, p, ap, size + headerSIZE);
if (res)
die(res, "MPS_RESERVE_BLOCK");
userP = (mps_addr_t)((char*)p + headerSIZE);
res = dylan_init(userP, size, exactRoots, roots_count);
if (res)
die(res, "dylan_init");
((int*)p)[0] = realHeader;
((int*)p)[1] = 0xED0ED;
} while(!mps_commit(ap, p, size + headerSIZE));
return userP;
}
/* 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);
}
}
/* test -- the body of the test */
static void *test(mps_arena_t arena, mps_class_t pool_class, size_t roots_count)
{
mps_fmt_t format;
mps_chain_t chain;
mps_root_t exactRoot, ambigRoot, bogusRoot;
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;
die(EnsureHeaderFormat(&format, arena), "fmt_create");
die(mps_chain_create(&chain, arena, genCOUNT, testChain), "chain_create");
die(mps_pool_create(&pool, arena, pool_class, 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] = 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)");
die(mps_root_create_table(&bogusRoot, arena,
mps_rank_ambig(), (mps_rm_t)0,
&bogusRoots[0], bogusRootsCOUNT),
"root_create_table(bogus)");
/* create an ap, and leave it busy */
die(mps_reserve(&busy_init, busy_ap, 64), "mps_reserve busy");
collections = 0;
rampSwitch = rampSIZE;
die(mps_ap_alloc_pattern_begin(ap, ramp), "pattern begin (ap)");
die(mps_ap_alloc_pattern_begin(busy_ap, ramp), "pattern begin (busy_ap)");
ramping = 1;
objs = 0;
while (collections < collectionsCOUNT) {
mps_word_t c;
size_t r;
c = mps_collections(arena);
if (collections != c) {
collections = c;
printf("\nCollection %"PRIuLONGEST", %lu objects.\n",
(ulongest_t)c, objs);
report(arena);
for (r = 0; r < exactRootsCOUNT; ++r) {
if (exactRoots[r] != objNULL)
die(HeaderFormatCheck(exactRoots[r]), "wrapper check");
}
if (collections == rampSwitch) {
int begin_ramp = !ramping
|| /* Every other time, switch back immediately. */ (collections & 1);
rampSwitch += rampSIZE;
if (ramping) {
die(mps_ap_alloc_pattern_end(ap, ramp), "pattern end (ap)");
die(mps_ap_alloc_pattern_end(busy_ap, ramp), "pattern end (busy_ap)");
ramping = 0;
/* kill half of the roots */
for(i = 0; i < exactRootsCOUNT; i += 2) {
if (exactRoots[i] != objNULL) {
die(HeaderFormatCheck(exactRoots[i]), "ramp kill check");
exactRoots[i] = objNULL;
}
}
}
if (begin_ramp) {
die(mps_ap_alloc_pattern_begin(ap, ramp),
"pattern rebegin (ap)");
die(mps_ap_alloc_pattern_begin(busy_ap, ramp),
"pattern rebegin (busy_ap)");
ramping = 1;
}
}
/* fill bogusRoots with variations of a real pointer */
r = rnd() % exactRootsCOUNT;
if (exactRoots[r] != objNULL) {
char *p = (char*)exactRoots[r];
for(i = 0; i < bogusRootsCOUNT; ++i, ++p)
bogusRoots[i] = (mps_addr_t)p;
}
}
r = (size_t)rnd();
if (r & 1) {
i = (r >> 1) % exactRootsCOUNT;
if (exactRoots[i] != objNULL)
die(HeaderFormatCheck(exactRoots[i]), "wrapper check");
exactRoots[i] = make(roots_count);
if (exactRoots[(exactRootsCOUNT-1) - i] != objNULL)
dylan_write(exactRoots[(exactRootsCOUNT-1) - i],
exactRoots, exactRootsCOUNT);
} else {
i = (r >> 1) % ambigRootsCOUNT;
ambigRoots[(ambigRootsCOUNT-1) - i] = make(roots_count);
/* 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_root_destroy(bogusRoot);
mps_pool_destroy(pool);
mps_chain_destroy(chain);
mps_fmt_destroy(format);
mps_arena_release(arena);
return NULL;
}
int main(int argc, char *argv[])
{
mps_arena_t arena;
mps_thr_t thread;
testlib_init(argc, argv);
MPS_ARGS_BEGIN(args) {
MPS_ARGS_ADD(args, MPS_KEY_ARENA_SIZE, testArenaSIZE);
MPS_ARGS_ADD(args, MPS_KEY_ARENA_GRAIN_SIZE, rnd_grain(testArenaSIZE));
die(mps_arena_create_k(&arena, mps_arena_class_vm(), args), "arena_create");
} MPS_ARGS_END(args);
mps_message_type_enable(arena, mps_message_type_gc());
die(mps_arena_commit_limit_set(arena, testArenaSIZE), "set limit");
die(mps_thread_reg(&thread, arena), "thread_reg");
test(arena, mps_class_amc(), exactRootsCOUNT);
test(arena, mps_class_amcz(), 0);
mps_thread_dereg(thread);
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.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 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
* major components of the operating system on which the executable file
* runs.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT, ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
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