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106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
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TEST_HEADER
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id = $Id$
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summary = simple spare_commit_limit test
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language = c
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link = testlib.o rankfmt.o
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harness = 2.0
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parameters = EXTEND=65536 AVGSIZE=32 BIGSIZE=5000000;
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OUTPUT_SPEC
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reduce1 > 4000000
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reduce2 <= 0
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reduce3 > 3000000
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completed = yes
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END_HEADER
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*/
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#include "testlib.h"
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#include "mpscmvff.h"
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#include "mpsavm.h"
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mps_arena_t arena;
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#define MAXOBJS (10000)
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mps_addr_t objs[MAXOBJS];
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mps_addr_t sizes[MAXOBJS];
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static void test(void)
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{
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mps_pool_t pool;
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mps_thr_t thread;
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unsigned long com0, com1, com2;
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/* create a VM arena of 40MB */
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cdie(mps_arena_create(&arena, mps_arena_class_vm(), (size_t)(1024*1024*40)),
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"create arena");
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/* set the commit limit to 100MB, i.e. let the arena do the limiting */
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mps_arena_commit_limit_set(arena, (size_t) (1024ul*1024ul*100ul));
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cdie(mps_thread_reg(&thread, arena), "register thread");
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MPS_ARGS_BEGIN(args) {
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MPS_ARGS_ADD(args, MPS_KEY_EXTEND_BY, EXTEND);
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MPS_ARGS_ADD(args, MPS_KEY_MEAN_SIZE, AVGSIZE);
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MPS_ARGS_ADD(args, MPS_KEY_MVFF_ARENA_HIGH, 0);
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MPS_ARGS_ADD(args, MPS_KEY_MVFF_SLOT_HIGH, 0);
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MPS_ARGS_ADD(args, MPS_KEY_MVFF_FIRST_FIT, 1);
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/* Set SPARE to 0 as we are testing arena hysteresis here and we
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don't want MVFF hysteresis to get in the way. */
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MPS_ARGS_ADD(args, MPS_KEY_SPARE, 0.0);
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cdie(mps_pool_create_k(&pool, arena, mps_class_mvff(), args),
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"create low pool");
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} MPS_ARGS_END(args);
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/* Set the spare commit limit to 0MB */
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mps_arena_spare_commit_limit_set(arena, (size_t) 0);
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die(mps_alloc(&objs[0], pool, BIGSIZE), "alloc");
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com0 = mps_arena_committed(arena);
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mps_free(pool, objs[0], BIGSIZE);
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com1 = mps_arena_committed(arena);
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/* the free should have reduced the total amount committed */
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report("reduce1", "%ld", com0-com1);
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/* Try again but with arena hysteresis */
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/* nb. size_t unsigned, therefore (size_t)-1 is the maximum limit */
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mps_arena_spare_commit_limit_set(arena, (size_t)-1);
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die(mps_alloc(&objs[0], pool, BIGSIZE), "alloc");
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com0 = mps_arena_committed(arena);
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mps_free(pool, objs[0], BIGSIZE);
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com1 = mps_arena_committed(arena);
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/* This time the free shouldn't make any difference */
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report("reduce2", "%ld", com0-com1);
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/* Reducing the spare committed limit should return most of the spare */
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mps_arena_spare_commit_limit_set(arena, (size_t)(1024*1024));
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com2 = mps_arena_committed(arena);
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report("reduce3", "%ld", com0-com2);
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comment("Finishing off.");
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mps_pool_destroy(pool);
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comment("Destroyed pool.");
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mps_thread_dereg(thread);
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comment("Deregistered thread.");
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mps_arena_destroy(arena);
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comment("Destroyed arena.");
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}
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int main(void)
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{
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easy_tramp(test);
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pass();
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return 0;
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}
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