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101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
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// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
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#ident "$Id$"
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#ident "Copyright (c) 2007-2012 Tokutek Inc. All rights reserved."
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#include "includes.h"
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#include "test.h"
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CACHETABLE ct;
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CACHEFILE f1;
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static void
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unlock_test_fun (void *v) {
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assert(v == NULL);
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// CT lock is held
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int r = toku_test_cachetable_unpin_ct_prelocked_no_flush(f1, make_blocknum(2), 2, CACHETABLE_CLEAN, make_pair_attr(8));
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assert(r==0);
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}
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static void
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run_test (void) {
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const int test_limit = 20;
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int r;
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ct = NULL;
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r = toku_create_cachetable(&ct, test_limit, ZERO_LSN, NULL_LOGGER); assert(r == 0);
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char fname1[] = __SRCFILE__ "test1.dat";
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unlink(fname1);
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f1 = NULL;
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r = toku_cachetable_openf(&f1, ct, fname1, O_RDWR|O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO); assert(r == 0);
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void* v1;
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void* v2;
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long s1;
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long s2;
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r = toku_cachetable_get_and_pin(f1, make_blocknum(1), 1, &v1, &s1, def_write_callback(NULL), def_fetch, def_pf_req_callback, def_pf_callback, true, NULL);
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r = toku_test_cachetable_unpin(f1, make_blocknum(1), 1, CACHETABLE_CLEAN, make_pair_attr(8)); assert(r==0);
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for (int i = 0; i < 20; i++) {
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r = toku_cachetable_get_and_pin(f1, make_blocknum(2), 2, &v2, &s2, def_write_callback(NULL), def_fetch, def_pf_req_callback, def_pf_callback, true, NULL);
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r = toku_test_cachetable_unpin(f1, make_blocknum(2), 2, CACHETABLE_CLEAN, make_pair_attr(8)); assert(r==0);
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}
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//
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// so at this point, we have 16 bytes in the cachetable that has a limit of 20 bytes
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// block 2 has been touched much more than block 1, so if one had to be evicted,
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// it would be block 2
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//
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// pin 1 and 2
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r = toku_cachetable_get_and_pin(f1, make_blocknum(1), 1, &v2, &s2, def_write_callback(NULL), def_fetch, def_pf_req_callback, def_pf_callback, true, NULL);
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CHECKPOINTER cp = toku_cachetable_get_checkpointer(ct);
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r = toku_cachetable_begin_checkpoint(cp, NULL);
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// mark nodes as pending a checkpoint, so that get_and_pin_nonblocking on block 1 will return TOKUDB_TRY_AGAIN
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r = toku_test_cachetable_unpin(f1, make_blocknum(1), 1, CACHETABLE_DIRTY, make_pair_attr(8)); assert(r==0);
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r = toku_cachetable_get_and_pin(f1, make_blocknum(2), 2, &v2, &s2, def_write_callback(NULL), def_fetch, def_pf_req_callback, def_pf_callback, true, NULL);
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// now we try to pin 1, and it should get evicted out from under us
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struct unlockers foo;
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foo.extra = NULL;
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foo.locked = true;
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foo.f = unlock_test_fun;
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foo.next = NULL;
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r = toku_cachetable_get_and_pin_nonblocking(
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f1,
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make_blocknum(1),
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1,
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&v1,
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&s1,
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def_write_callback(NULL),
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def_fetch,
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def_pf_req_callback,
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def_pf_callback,
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PL_WRITE_EXPENSIVE,
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NULL,
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&foo
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);
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assert(r==TOKUDB_TRY_AGAIN);
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r = toku_cachetable_end_checkpoint(
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cp,
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NULL,
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NULL,
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NULL
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);
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assert(r==0);
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toku_cachetable_verify(ct);
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r = toku_cachefile_close(&f1, 0, false, ZERO_LSN); assert(r == 0);
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r = toku_cachetable_close(&ct); lazy_assert_zero(r);
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}
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int
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test_main(int argc, const char *argv[]) {
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default_parse_args(argc, argv);
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run_test();
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return 0;
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}
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