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Use gc_start messages to robustly determine whether a collection started (rather than the unreliable mps_collections).

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 Change: 187485
 ServerID: perforce.ravenbrook.com
This commit is contained in:
Gareth Rees 2014-11-07 10:41:51 +00:00
parent b6d8cd9e16
commit adb6631e7e

View file

@ -59,33 +59,9 @@ static mps_gen_param_s testChain[genCOUNT] = {
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);
}
}
static mps_word_t collections;
static mps_arena_t arena;
static mps_fmt_t format;
static mps_chain_t chain;
static mps_root_t exactRoot, ambigRoot;
static unsigned long objs = 0;
@ -123,32 +99,6 @@ static void test_stepper(mps_addr_t object, mps_fmt_t fmt, mps_pool_t pool,
}
/* init -- initialize roots and chain */
static void init(void)
{
size_t i;
die(dylan_fmt(&format, arena), "fmt_create");
die(mps_chain_create(&chain, arena, genCOUNT, testChain), "chain_create");
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)");
}
/* churn -- create an object and install into roots */
static void churn(mps_ap_t ap, size_t roots_count)
@ -207,10 +157,11 @@ static void *kid_thread(void *arg)
/* test -- the body of the test */
static void test_pool(mps_pool_t pool, size_t roots_count, int mode)
static void test_pool(const char *name, mps_pool_t pool, size_t roots_count,
int mode)
{
size_t i;
mps_word_t collections, rampSwitch;
mps_word_t rampSwitch;
mps_alloc_pattern_t ramp = mps_alloc_pattern_ramp();
int ramping;
mps_ap_t ap, busy_ap;
@ -219,8 +170,12 @@ static void test_pool(mps_pool_t pool, size_t roots_count, int mode)
closure_s cl;
int walked = FALSE, ramped = FALSE;
printf("\n------ mode: %s pool: %s-------\n",
mode == ModeWALK ? "WALK" : "COMMIT", name);
cl.pool = pool;
cl.roots_count = roots_count;
collections = 0;
for (i = 0; i < NELEMS(kids); ++i)
testthr_create(&kids[i], kid_thread, &cl);
@ -231,72 +186,85 @@ static void test_pool(mps_pool_t pool, size_t roots_count, int mode)
/* 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;
while (collections < collectionsCOUNT) {
mps_word_t c;
size_t r;
mps_message_type_t type;
c = mps_collections(arena);
if (mps_message_queue_type(&type, arena)) {
mps_message_t msg;
mps_bool_t b = mps_message_get(&msg, arena, type);
Insist(b); /* we just checked there was one */
if (collections != c) {
collections = c;
printf("\nCollection %lu started, %lu objects, committed=%lu.\n",
(unsigned long)c, objs, (unsigned long)mps_arena_committed(arena));
report(arena);
if (type == mps_message_type_gc()) {
size_t live = mps_message_gc_live_size(arena, msg);
size_t condemned = mps_message_gc_condemned_size(arena, msg);
size_t not_condemned = mps_message_gc_not_condemned_size(arena, msg);
for (i = 0; i < exactRootsCOUNT; ++i)
cdie(exactRoots[i] == objNULL || dylan_check(exactRoots[i]),
"all roots check");
printf("\nCollection %lu finished:\n", collections++);
printf("live %"PRIuLONGEST"\n", (ulongest_t)live);
printf("condemned %"PRIuLONGEST"\n", (ulongest_t)condemned);
printf("not_condemned %"PRIuLONGEST"\n", (ulongest_t)not_condemned);
if (mode == ModeWALK && collections >= collectionsCOUNT / 2 && !walked) {
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);
walked = TRUE;
}
if (collections >= rampSwitch && !ramped) {
int begin_ramp = !ramping
|| /* Every other time, switch back immediately. */ (collections & 1);
} else if (type == mps_message_type_gc_start()) {
printf("\nCollection %lu started, %lu objects, committed=%lu.\n",
(unsigned long)collections, objs,
(unsigned long)mps_arena_committed(arena));
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) {
cdie(dylan_check(exactRoots[i]), "ramp kill check");
exactRoots[i] = objNULL;
for (i = 0; i < exactRootsCOUNT; ++i)
cdie(exactRoots[i] == objNULL || dylan_check(exactRoots[i]),
"all roots check");
if (mode == ModeWALK && collections >= collectionsCOUNT / 2 && !walked)
{
unsigned long count = 0;
mps_arena_park(arena);
mps_arena_formatted_objects_walk(arena, test_stepper, &count, 0);
mps_arena_release(arena);
printf("stepped on %lu objects.\n", count);
walked = TRUE;
}
if (collections >= rampSwitch && !ramped) {
/* Every other time, switch back immediately. */
int begin_ramp = !ramping || (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) {
cdie(dylan_check(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;
}
}
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;
}
ramped = TRUE;
}
ramped = TRUE;
mps_message_discard(arena, msg);
}
churn(ap, roots_count);
r = (size_t)rnd();
if (r % initTestFREQ == 0)
*(int*)busy_init = -1; /* check that the buffer is still there */
{
size_t r = (size_t)rnd();
if (r % initTestFREQ == 0)
*(int*)busy_init = -1; /* check that the buffer is still there */
}
if (objs % 1024 == 0) {
report(arena);
putchar('.');
fflush(stdout);
}
@ -312,6 +280,9 @@ static void test_pool(mps_pool_t pool, size_t roots_count, int mode)
static void test_arena(int mode)
{
size_t i;
mps_fmt_t format;
mps_chain_t chain;
mps_thr_t thread;
mps_root_t reg_root;
mps_pool_t amc_pool, amcz_pool;
@ -325,7 +296,25 @@ static void test_arena(int mode)
if (mode == ModeCOMMIT)
die(mps_arena_commit_limit_set(arena, 2 * testArenaSIZE), "set limit");
mps_message_type_enable(arena, mps_message_type_gc());
init();
mps_message_type_enable(arena, mps_message_type_gc_start());
die(dylan_fmt(&format, arena), "fmt_create");
die(mps_chain_create(&chain, arena, genCOUNT, testChain), "chain_create");
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_thread_reg(&thread, arena), "thread_reg");
die(mps_root_create_reg(&reg_root, arena, mps_rank_ambig(), 0, thread,
mps_stack_scan_ambig, marker, 0), "root_create");
@ -335,8 +324,8 @@ static void test_arena(int mode)
die(mps_pool_create(&amcz_pool, arena, mps_class_amcz(), format, chain),
"pool_create(amcz)");
test_pool(amc_pool, exactRootsCOUNT, mode);
test_pool(amcz_pool, 0, mode);
test_pool("AMC", amc_pool, exactRootsCOUNT, mode);
test_pool("AMCZ", amcz_pool, 0, mode);
mps_arena_park(arena);
mps_pool_destroy(amc_pool);
@ -347,7 +336,6 @@ static void test_arena(int mode)
mps_root_destroy(ambigRoot);
mps_chain_destroy(chain);
mps_fmt_destroy(format);
report(arena);
mps_arena_destroy(arena);
}
@ -367,18 +355,18 @@ int main(int argc, char *argv[])
* 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
@ -389,7 +377,7 @@ int main(int argc, char *argv[])
* 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