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emacs/mps/code/mpsicv.c
Gareth Rees 76bff163f5 Ensure that the mps builds with clang 10. 
Clang 10 turns on -Wimplicit-int-float-conversion, and on 64-bit
platforms this issues a warning that implicit conversions to double
from Size and unsigned long "may lose precision".

This commit adds casts to (double) for all such conversions. The loss
of precision is either impossible in practice (because a double can
represent all integers up to 2**53, which is about 9 petabytes, well
beyond the addressing capabilities for current CPUs), or else
acceptable, because we are accumulating an approximate quantity like
"collection work" or "fill size" (that has to cope with loss of
precision due in any case), or computing a threshold like the spare
commit limit where it is acceptable for it to be somewhat approximate.
2021-01-10 10:42:05 +00:00

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/* mpsicv.c: MPSI COVERAGE TEST
*
* $Id$
* Copyright (c) 2001-2020 Ravenbrook Limited. See end of file for license.
* Portions copyright (c) 2002 Global Graphics Software.
*/
#include "testlib.h"
#include "mpslib.h"
#include "mpscamc.h"
#include "mpsavm.h"
#include "mpscmvff.h"
#include "fmthe.h"
#include "fmtdy.h"
#include "fmtdytst.h"
#include "mps.h"
#include "mpstd.h"
#include <stdio.h> /* printf */
#define exactRootsCOUNT 49
#define ambigRootsCOUNT 49
#define OBJECTS 100000
#define patternFREQ 100
/* objNULL needs to be odd so that it's ignored in exactRoots. */
#define objNULL ((mps_addr_t)MPS_WORD_CONST(0xDECEA5ED))
#define FILLER_OBJECT_SIZE 1023
#define genCOUNT 2
static mps_gen_param_s testChain[genCOUNT] = {
{ 150, 0.85 }, { 170, 0.45 } };
static mps_pool_t amcpool;
static mps_ap_t ap;
static size_t ap_headerSIZE = 0;
/* For this ap.... */
/* Auto_header format
*
* [ auto_header ][===object===]
* ^pMps ^pCli
* <-----------sizeMps--------->
* <---sizeCli-->
*
* Note: pMps < pCli; sizeMps > sizeCli.
*/
#define PtrMps2Cli(n) ((char*)n + ap_headerSIZE)
#define PtrCli2Mps(n) ((char*)n - ap_headerSIZE)
#define SizeMps2Cli(n) (n - ap_headerSIZE)
#define SizeCli2Mps(n) (n + ap_headerSIZE)
#define HeaderInit(pMps) do { \
if(ap_headerSIZE != 0) { \
mps_addr_t pMps_MACROCOPY = (pMps); /* macro hygiene */ \
((int*)pMps_MACROCOPY)[0] = realHeader; \
((int*)pMps_MACROCOPY)[1] = 0xED0ED; \
} \
} while(0)
static mps_addr_t exactRoots[exactRootsCOUNT];
static mps_addr_t ambigRoots[ambigRootsCOUNT];
/* Types for alignment tests */
#define hasLONG_LONG 1
#ifdef _MSC_VER
#define long_long_t __int64
#else
#define long_long_t long long
#endif
struct tdouble {
double d;
};
struct tlong {
long d;
};
#ifdef HAS_LONG_LONG
struct tlonglong {
long_long_t d;
};
#endif
/* alignmentTest -- test default alignment is acceptable */
static void alignmentTest(mps_arena_t arena)
{
mps_pool_t pool;
void *p;
int dummy = 0;
size_t j, size;
MPS_ARGS_BEGIN(args) {
MPS_ARGS_ADD(args, MPS_KEY_EXTEND_BY, 0x1000);
MPS_ARGS_ADD(args, MPS_KEY_MEAN_SIZE, 1024);
MPS_ARGS_ADD(args, MPS_KEY_MAX_SIZE, 16384);
die(mps_pool_create_k(&pool, arena, mps_class_mvff(), args),
"alignment pool create");
} MPS_ARGS_END(args);
size = max(sizeof(double), sizeof(long));
#ifdef HAS_LONG_LONG
size = max(size, sizeof(long_long_t));
#endif
for(j = 0; j <= size + (size_t)1; ++j) {
die(mps_alloc(&p, pool, size + 1), "alignment alloc");
#define access(type, p) *(type*)(p) = (type)dummy; dummy += (int)*(type*)(p);
access(double, p);
access(long, p);
#ifdef HAS_LONG_LONG
access(long_long_t, p);
#endif
}
mps_pool_destroy(pool);
}
/* make -- allocate an object */
static mps_addr_t make(void)
{
size_t length = rnd() % 20;
size_t sizeCli = (length+2)*sizeof(mps_word_t);
size_t sizeMps = SizeCli2Mps(sizeCli);
mps_addr_t pMps, pCli;
mps_res_t res;
do {
MPS_RESERVE_BLOCK(res, pMps, ap, sizeMps);
if (res != MPS_RES_OK)
die(res, "MPS_RESERVE_BLOCK");
HeaderInit(pMps);
pCli = PtrMps2Cli(pMps);
res = dylan_init(pCli, sizeCli, exactRoots, exactRootsCOUNT);
if (res != MPS_RES_OK)
die(res, "dylan_init");
} while(!mps_commit(ap, pMps, sizeMps));
return pCli;
}
/* make_no_inline -- allocate an object, using non-inlined interface */
static mps_addr_t make_no_inline(void)
{
size_t length = rnd() % 20;
size_t sizeCli = (length+2)*sizeof(mps_word_t);
size_t sizeMps = SizeCli2Mps(sizeCli);
mps_addr_t pMps, pCli;
mps_res_t res;
do {
res = (mps_reserve)(&pMps, ap, sizeMps);
if (res != MPS_RES_OK)
die(res, "(mps_reserve)");
HeaderInit(pMps);
pCli = PtrMps2Cli(pMps);
res = dylan_init(pCli, sizeCli, exactRoots, exactRootsCOUNT);
if (res != MPS_RES_OK)
die(res, "dylan_init");
} while(!(mps_commit)(ap, pMps, sizeMps));
return pCli;
}
static void pool_create_v_test(mps_arena_t arena, ...)
{
va_list args;
va_start(args, arena);
die(mps_pool_create_v(&amcpool, arena, mps_class_amc(), args),
"pool_create_v(amc)");
va_end(args);
}
static void ap_create_v_test(mps_pool_t pool, ...)
{
mps_ap_t apt;
va_list args;
va_start(args, pool);
die(mps_ap_create_v(&apt, pool, args), "ap_create_v");
va_end(args);
mps_ap_destroy(apt);
}
/* addr_pool_test
*
* intended to test:
* mps_arena_has_addr
* mps_addr_pool
* mps_addr_fmt
*/
static void addr_pool_test(mps_arena_t arena,
mps_addr_t obj1, /* unformatted */
mps_pool_t pool1,
mps_addr_t obj2, /* formatted */
mps_pool_t pool2,
mps_fmt_t fmt2)
{
/* Things we might test. An addr might be:
* 0- a valid reference to an MPS-managed object;
* 1- interior pointer to an MPS-managed object;
* 2- pointer into some other part of a Seg owned by a Pool;
* ^^^(mps_addr_pool returns TRUE for these)
* 3- pointer to some MPS memory that's not a Seg;
* 4- pointer to unmapped memory;
* 5- pointer to memory not in any Chunk.
* ^^^(mps_addr_pool returns FALSE for these)
*
* We actually test case 0 (for both unformatted and formatted
* objects), and case 5.
*/
mps_bool_t b;
mps_addr_t addr;
/* DISTInguished values are to observe overwrites. */
mps_pool_t poolDistinguished = (mps_pool_t)MPS_WORD_CONST(0x000d1521);
mps_pool_t pool = poolDistinguished;
mps_fmt_t fmtDistinguished = (mps_fmt_t)MPS_WORD_CONST(0x000d1521);
mps_fmt_t fmt = fmtDistinguished;
/* 0a -- obj1 in pool1 (unformatted) */
addr = obj1;
pool = poolDistinguished;
fmt = fmtDistinguished;
cdie(mps_arena_has_addr(arena, addr), "mps_arena_has_addr 0a");
b = mps_addr_pool(&pool, arena, addr);
/* printf("b %d; pool %p; sig %lx\n", b, (void *)pool,
b ? ((mps_word_t*)pool)[0] : (mps_word_t)0); */
cdie(b == TRUE && pool == pool1, "mps_addr_pool 0a");
b = mps_addr_fmt(&fmt, arena, addr);
/* printf("b %d; fmt %p; sig %lx\n", b, (void *)fmt,
b ? ((mps_word_t*)fmt)[0] : (mps_word_t)0); */
cdie(b == FALSE && fmt == fmtDistinguished, "mps_addr_fmt 0a");
/* 0b -- obj2 in pool2, with fmt2 */
addr = obj2;
pool = poolDistinguished;
fmt = fmtDistinguished;
cdie(mps_arena_has_addr(arena, addr), "mps_arena_has_addr 0b");
b = mps_addr_pool(&pool, arena, addr);
/* printf("b %d; pool %p; sig %lx\n", b, (void *)pool,
b ? ((mps_word_t*)pool)[0] : (mps_word_t)0); */
cdie(b == TRUE && pool == pool2, "mps_addr_pool 0b");
b = mps_addr_fmt(&fmt, arena, addr);
/* printf("b %d; fmt %p; sig %lx\n", b, (void *)fmt,
b ? ((mps_word_t*)fmt)[0] : (mps_word_t)0); */
cdie(b == TRUE && fmt == fmt2, "mps_addr_fmt 0b");
/* 5 */
addr = &pool; /* point at stack, not in any chunk */
pool = poolDistinguished;
fmt = fmtDistinguished;
cdie(mps_arena_has_addr(arena, addr) == FALSE, "mps_arena_has_addr 5");
b = mps_addr_pool(&pool, arena, addr);
cdie(b == FALSE && pool == poolDistinguished, "mps_addr_pool 5");
b = mps_addr_fmt(&fmt, arena, addr);
cdie(b == FALSE && fmt == fmtDistinguished, "mps_addr_fmt 5");
}
static mps_res_t root_single(mps_ss_t ss, void *p, size_t s)
{
mps_res_t res;
mps_addr_t *ref = p;
testlib_unused(s);
MPS_SCAN_BEGIN(ss) {
res = MPS_FIX12(ss, ref);
} MPS_SCAN_END(ss);
return res;
}
/* arena_commit_test
*
* intended to test:
* MPS_RES_COMMIT_LIMIT
* mps_arena_commit_limit
* mps_arena_commit_limit_set
* mps_arena_committed
* mps_arena_reserved
* mps_arena_spare
* mps_arena_spare_committed
* mps_arena_spare_set
* incidentally tests:
* mps_alloc
* mps_arena_commit_limit_set
* mps_class_mvff
* mps_pool_create
* mps_pool_destroy
*/
static void arena_commit_test(mps_arena_t arena)
{
mps_pool_t pool;
size_t committed;
size_t reserved;
size_t spare_committed;
size_t limit;
double spare;
void *p;
mps_res_t res;
MPS_ARGS_BEGIN(args) {
MPS_ARGS_ADD(args, MPS_KEY_EXTEND_BY, 0x1000);
MPS_ARGS_ADD(args, MPS_KEY_MEAN_SIZE, 1024);
MPS_ARGS_ADD(args, MPS_KEY_MAX_SIZE, 16384);
die(mps_pool_create_k(&pool, arena, mps_class_mvff(), args),
"commit pool create");
} MPS_ARGS_END(args);
limit = mps_arena_commit_limit(arena);
committed = mps_arena_committed(arena);
spare = mps_arena_spare(arena);
spare_committed = mps_arena_spare_committed(arena);
reserved = mps_arena_reserved(arena);
Insist(0.0 <= spare);
Insist(spare <= 1.0);
Insist((double)spare_committed <= spare * (double)committed);
Insist(spare_committed < committed);
Insist(committed <= reserved);
Insist(committed <= limit);
die(mps_arena_commit_limit_set(arena, committed), "commit_limit_set before");
do {
res = mps_alloc(&p, pool, FILLER_OBJECT_SIZE);
} while (res == MPS_RES_OK);
die_expect(res, MPS_RES_COMMIT_LIMIT, "Commit limit allocation");
die(mps_arena_commit_limit_set(arena, limit), "commit_limit_set after");
res = mps_alloc(&p, pool, FILLER_OBJECT_SIZE);
die_expect(res, MPS_RES_OK, "Allocation failed after raising commit_limit");
mps_arena_spare_set(arena, 0.0);
Insist(mps_arena_spare(arena) == 0.0);
Insist(mps_arena_spare_committed(arena) == 0);
mps_pool_destroy(pool);
}
static void test(mps_arena_t arena)
{
mps_fmt_t format;
mps_chain_t chain;
mps_root_t exactAreaRoot, exactTableRoot, ambigAreaRoot, ambigTableRoot,
singleRoot, fmtRoot;
unsigned long i;
/* Leave arena clamped until we have allocated this many objects.
is 0 when arena has not been clamped. */
unsigned long clamp_until = 0;
size_t j;
mps_word_t collections;
mps_pool_t mv;
mps_addr_t alloced_obj;
size_t asize = 32; /* size of alloced obj */
mps_addr_t obj;
mps_ld_s ld;
mps_alloc_pattern_t ramp = mps_alloc_pattern_ramp();
size_t rampCount = 0;
mps_res_t res;
if (rnd() & 1) {
printf("Using auto_header format.\n");
die(EnsureHeaderFormat(&format, arena), "EnsureHeaderFormat");
ap_headerSIZE = headerSIZE; /* from fmthe.h */
} else {
printf("Using normal format (no implicit object header: client pointers point at start of storage).\n");
die(dylan_fmt(&format, arena), "fmt_create");
ap_headerSIZE = 0;
}
die(mps_chain_create(&chain, arena, genCOUNT, testChain), "chain_create");
MPS_ARGS_BEGIN(args) {
MPS_ARGS_ADD(args, MPS_KEY_EXTEND_BY, 0x10000);
MPS_ARGS_ADD(args, MPS_KEY_MEAN_SIZE, 32);
MPS_ARGS_ADD(args, MPS_KEY_MAX_SIZE, 0x10000);
die(mps_pool_create_k(&mv, arena, mps_class_mvff(), args),
"pool_create(mv)");
} MPS_ARGS_END(args);
pool_create_v_test(arena, format, chain); /* creates amc pool */
ap_create_v_test(amcpool);
die(mps_ap_create(&ap, amcpool), "ap_create");
for(j = 0; j < exactRootsCOUNT; ++j) {
exactRoots[j] = objNULL;
}
for(j = 0; j < ambigRootsCOUNT; ++j) {
ambigRoots[j] = rnd_addr();
}
die(mps_root_create_area_tagged(&exactAreaRoot, arena,
mps_rank_exact(), (mps_rm_t)0,
&exactRoots[0],
&exactRoots[exactRootsCOUNT / 2],
mps_scan_area_tagged,
MPS_WORD_CONST(1), 0),
"root_create_area_tagged(exact)");
die(mps_root_create_table_masked(&exactTableRoot, arena,
mps_rank_exact(), (mps_rm_t)0,
&exactRoots[exactRootsCOUNT / 2],
(exactRootsCOUNT + 1) / 2,
MPS_WORD_CONST(1)),
"root_create_table_masked(exact)");
die(mps_root_create_area(&ambigAreaRoot, arena,
mps_rank_ambig(), (mps_rm_t)0,
&ambigRoots[0],
&ambigRoots[ambigRootsCOUNT / 2],
mps_scan_area, NULL),
"root_create_area(ambig)");
die(mps_root_create_table(&ambigTableRoot, arena,
mps_rank_ambig(), (mps_rm_t)0,
&ambigRoots[ambigRootsCOUNT / 2],
(ambigRootsCOUNT + 1) / 2),
"root_create_table(ambig)");
obj = objNULL;
die(mps_root_create(&singleRoot, arena,
mps_rank_exact(), (mps_rm_t)0,
&root_single, &obj, 0),
"root_create(single)");
/* test non-inlined reserve/commit */
obj = make_no_inline();
die(mps_alloc(&alloced_obj, mv, asize), "mps_alloc");
die(dylan_init(alloced_obj, asize, exactRoots, exactRootsCOUNT),
"dylan_init(alloced_obj)");
addr_pool_test(arena, alloced_obj, mv, make(), amcpool, format);
die(mps_root_create_fmt(&fmtRoot, arena,
mps_rank_exact(), (mps_rm_t)0,
dylan_fmt_A()->scan,
alloced_obj,
(mps_addr_t)(((char*)alloced_obj)+asize)),
"root_create_fmt");
mps_ld_reset(&ld, arena);
mps_ld_add(&ld, arena, obj);
if (mps_ld_isstale(&ld, arena, obj)) {
cdie(mps_ld_isstale_any(&ld, arena), "mps_ld_isstale_any");
mps_ld_reset(&ld, arena);
mps_ld_add(&ld, arena, obj);
}
collections = mps_collections(arena);
for(i = 0; i < OBJECTS; ++i) {
mps_word_t c;
size_t r;
Insist(!mps_arena_busy(arena));
c = mps_collections(arena);
if(collections != c) {
collections = c;
printf("Collection %"PRIuLONGEST", %lu objects.\n", (ulongest_t)c, i);
for(r = 0; r < exactRootsCOUNT; ++r) {
cdie(exactRoots[r] == objNULL || dylan_check(exactRoots[r]),
"all roots check");
}
if(collections == 1) {
mps_arena_clamp(arena);
clamp_until = i + 10000;
}
if(collections % 3 == 2) {
mps_arena_park(arena);
mps_arena_release(arena);
}
}
if(clamp_until && i >= clamp_until) {
mps_arena_release(arena);
clamp_until = 0;
}
if (rnd() % patternFREQ == 0) {
switch(rnd() % 4) {
case 0: /* fall through */
case 1:
die(mps_ap_alloc_pattern_begin(ap, ramp), "alloc_pattern_begin");
++rampCount;
break;
case 2:
res = mps_ap_alloc_pattern_end(ap, ramp);
cdie(rampCount > 0 ? res == MPS_RES_OK : res == MPS_RES_FAIL,
"alloc_pattern_end");
if (rampCount > 0) {
--rampCount;
}
break;
default:
die(mps_ap_alloc_pattern_reset(ap), "alloc_pattern_reset");
rampCount = 0;
break;
}
}
if (rnd() & 1) {
exactRoots[rnd() % exactRootsCOUNT] = make();
} else {
ambigRoots[rnd() % ambigRootsCOUNT] = make();
}
r = rnd() % exactRootsCOUNT;
if (exactRoots[r] != objNULL) {
cdie(dylan_check(exactRoots[r]), "random root check");
}
}
arena_commit_test(arena);
alignmentTest(arena);
die(mps_arena_collect(arena), "collect");
mps_arena_release(arena);
mps_free(mv, alloced_obj, 32);
mps_arena_park(arena);
mps_pool_destroy(mv);
mps_ap_destroy(ap);
mps_root_destroy(fmtRoot);
mps_root_destroy(singleRoot);
mps_root_destroy(exactAreaRoot);
mps_root_destroy(exactTableRoot);
mps_root_destroy(ambigAreaRoot);
mps_root_destroy(ambigTableRoot);
mps_pool_destroy(amcpool);
mps_chain_destroy(chain);
mps_fmt_destroy(format);
}
#define TEST_ARENA_SIZE ((size_t)16<<20)
int main(int argc, char *argv[])
{
mps_arena_t arena;
mps_thr_t thread;
mps_root_t reg_root;
void *marker = &marker;
testlib_init(argc, argv);
MPS_ARGS_BEGIN(args) {
/* Randomize pause time as a regression test for job004011. */
MPS_ARGS_ADD(args, MPS_KEY_PAUSE_TIME, rnd_pause_time());
MPS_ARGS_ADD(args, MPS_KEY_ARENA_SIZE, TEST_ARENA_SIZE);
MPS_ARGS_ADD(args, MPS_KEY_SPARE, rnd_double());
die(mps_arena_create_k(&arena, mps_arena_class_vm(), args),
"arena_create");
} MPS_ARGS_END(args);
die(mps_thread_reg(&thread, arena), "thread_reg");
switch (rnd() % 3) {
default:
case 0:
die(mps_root_create_reg(&reg_root, arena,
mps_rank_ambig(), (mps_rm_t)0,
thread, &mps_stack_scan_ambig,
marker, (size_t)0),
"root_create_reg");
break;
case 1:
die(mps_root_create_thread(&reg_root, arena, thread, marker),
"root_create_thread");
break;
case 2:
die(mps_root_create_thread_scanned(&reg_root, arena, mps_rank_ambig(),
(mps_rm_t)0, thread, mps_scan_area,
NULL, marker),
"root_create_thread");
break;
}
test(arena);
switch (rnd() % 2) {
default:
case 0:
mps_root_destroy(reg_root);
mps_thread_dereg(thread);
mps_arena_destroy(arena);
break;
case 1:
mps_arena_postmortem(arena);
break;
}
printf("%s: Conclusion: Failed to find any defects.\n", argv[0]);
return 0;
}
/* C. COPYRIGHT AND LICENSE
*
* Copyright (C) 2001-2020 Ravenbrook Limited <https://www.ravenbrook.com/>.
*
* 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.
*
* 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 AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR 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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