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128 lines
4 KiB
C
128 lines
4 KiB
C
/* -*- mode: C; c-basic-offset: 4 -*- */
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/* verify that get_and_pin waits while a prefetch block is pending */
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#ident "$Id$"
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#ident "Copyright (c) 2007-2011 Tokutek Inc. All rights reserved."
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#include "includes.h"
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#include "test.h"
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BOOL do_sleep;
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static void
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flush (CACHEFILE f __attribute__((__unused__)),
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int UU(fd),
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CACHEKEY k __attribute__((__unused__)),
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void *v __attribute__((__unused__)),
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void** UU(dd),
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void *e __attribute__((__unused__)),
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PAIR_ATTR s __attribute__((__unused__)),
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PAIR_ATTR* new_size __attribute__((__unused__)),
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BOOL w __attribute__((__unused__)),
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BOOL keep __attribute__((__unused__)),
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BOOL c __attribute__((__unused__)),
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BOOL UU(is_clone)
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) {
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if (do_sleep) {
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sleep(2);
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}
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}
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static uint64_t tdelta_usec(struct timeval *tend, struct timeval *tstart) {
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uint64_t t = tend->tv_sec * 1000000 + tend->tv_usec;
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t -= tstart->tv_sec * 1000000 + tstart->tv_usec;
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return t;
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}
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static void cachetable_predef_fetch_maybegetandpin_test (void) {
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const int test_limit = 12;
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int r;
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CACHETABLE ct;
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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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CACHEFILE f1;
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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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CACHEKEY key = make_blocknum(0);
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u_int32_t fullhash = toku_cachetable_hash(f1, make_blocknum(0));
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// let's get and pin this node a bunch of times to drive up the clock count
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for (int i = 0; i < 20; i++) {
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void* value;
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long size;
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CACHETABLE_WRITE_CALLBACK wc = def_write_callback(NULL);
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wc.flush_callback = flush;
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r = toku_cachetable_get_and_pin(
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f1,
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key,
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fullhash,
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&value,
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&size,
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wc,
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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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TRUE,
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0
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);
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assert(r==0);
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r = toku_cachetable_unpin(f1, key, fullhash, CACHETABLE_DIRTY, make_pair_attr(8));
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}
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struct timeval tstart;
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gettimeofday(&tstart, NULL);
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// def_fetch another block, causing an eviction of the first block we made above
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do_sleep = TRUE;
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void* value2;
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long size2;
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CACHETABLE_WRITE_CALLBACK wc = def_write_callback(NULL);
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r = toku_cachetable_get_and_pin(
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f1,
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make_blocknum(1),
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1,
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&value2,
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&size2,
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wc,
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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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TRUE,
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0
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);
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assert(r==0);
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r = toku_cachetable_unpin(f1, make_blocknum(1), 1, CACHETABLE_CLEAN, make_pair_attr(8));
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toku_cachetable_verify(ct);
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void *v = 0;
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long size = 0;
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// now verify that the block we are trying to evict may be pinned
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wc = def_write_callback(NULL);
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wc.flush_callback = flush;
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r = toku_cachetable_get_and_pin_nonblocking(f1, key, fullhash, &v, &size, wc, def_fetch, def_pf_req_callback, def_pf_callback, TRUE, NULL, NULL);
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assert(r == TOKUDB_TRY_AGAIN);
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r = toku_cachetable_get_and_pin(f1, key, fullhash, &v, &size, wc, def_fetch, def_pf_req_callback, def_pf_callback, TRUE, NULL);
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assert(r == 0 && v == 0 && size == 8);
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do_sleep = FALSE;
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struct timeval tend;
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gettimeofday(&tend, NULL);
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assert(tdelta_usec(&tend, &tstart) >= 2000000);
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if (verbose)printf("time %"PRIu64" \n", tdelta_usec(&tend, &tstart));
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toku_cachetable_verify(ct);
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r = toku_cachetable_unpin(f1, key, fullhash, CACHETABLE_CLEAN, make_pair_attr(1));
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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); assert(r == 0 && ct == 0);
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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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cachetable_predef_fetch_maybegetandpin_test();
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return 0;
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}
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