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003a16f3c9
* Missing mps_chain_destroy in function/132. * Need to use platform alignment in the MVFF test cases (function/163, function/164, function/165, function/167, function/170) * Avoid type pun in function/226. Update testsets/passing accordingly. Copied from Perforce Change: 182262 ServerID: perforce.ravenbrook.com
106 lines
2.5 KiB
C
106 lines
2.5 KiB
C
/*
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TEST_HEADER
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id = $Id$
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summary = MVFF emergency list test, using _grain_ list
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language = c
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link = testlib.o
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END_HEADER
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*/
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/* MVFF will put free blocks on emergency lists if it cannot allocate
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in the CBS. There is a bug in anchovy.1 in which having more than one
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block on the emergency lists that's bigger than a segment will cause
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an assertion to fire when the emergency lists are flushed.
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- set commit limit
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- allocate (a) lots of small objects
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(b) lots of big objects (until can do no more)
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- free a goodly number of non-adjacent small objects, so that
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we start to use emergency lists
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- free lots of non-adjacent big objects
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- raise commit limit
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- free or alloc to make CBS flush lists
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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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#define COMLIMIT1 (10*1024*1024)
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#define COMLIMIT2 (12*1024*1024)
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#define SMALLSIZE (4)
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#define NSMALL (4*1024)
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#define BIGSIZE (8*1024)
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#define EXTENDBY (8*1024)
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#define MAXLARGE (10*1024)
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void *stackpointer;
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mps_arena_t arena;
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static mps_addr_t
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largeObjects[MAXLARGE],
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smallObjects[NSMALL];
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static void test(void) {
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mps_thr_t thread;
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mps_pool_t pool;
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unsigned int i;
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unsigned long nLarge;
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cdie(mps_arena_create(&arena, mps_arena_class_vmnz(),
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(size_t) (1024*1024*50)), "create arena");
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cdie(mps_thread_reg(&thread, arena), "register thread");
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mps_arena_commit_limit_set(arena, COMLIMIT1);
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die(
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mps_pool_create(&pool, arena, mps_class_mvff(),
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EXTENDBY, 8, MPS_PF_ALIGN, 0, 0, 1),
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"create MVFF pool");
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for (i = 0; i < NSMALL; i++) {
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die(mps_alloc(&smallObjects[i], pool, SMALLSIZE), "small alloc failed");
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}
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nLarge = 0;
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while (mps_alloc(&largeObjects[nLarge], pool, BIGSIZE) == MPS_RES_OK) {
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nLarge ++;
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}
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report("nLarge", "%lu", nLarge);
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for (i = 0; i < NSMALL; i += 2) {
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mps_free(pool, smallObjects[i], SMALLSIZE);
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}
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comment("Freed every other small object.");
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/* The CBS should be in emergency mode now. */
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for (i = 0; i < nLarge; i += 2) {
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mps_free(pool, largeObjects[i], BIGSIZE);
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}
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comment("Freed every other large object.");
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/* Now there should be lots of big blocks on the CBS. */
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mps_arena_commit_limit_set(arena, COMLIMIT2);
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comment("Raised the commit limit. Will attempt free and alloc.");
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mps_free(pool, largeObjects[1], BIGSIZE);
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die(mps_alloc(&largeObjects[0], pool, BIGSIZE), "alloc failed");
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mps_pool_destroy(pool);
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mps_thread_dereg(thread);
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mps_arena_destroy(arena);
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}
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int main(void) {
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void *m;
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stackpointer=&m; /* hack to get stack pointer */
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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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