X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=isamc%2Fisamc.c;h=80f8199b042f1be2dfcfdfdeaba023f1abe3ae04;hp=d1819b2e2f24c268afea88a106edf295cd92b2f0;hb=ba0720e26f508ba3396e232d2f82037c0e701698;hpb=6c9fcd3b5d3108702fa1ffc92dab4ab6060f9a19 diff --git a/isamc/isamc.c b/isamc/isamc.c index d1819b2..80f8199 100644 --- a/isamc/isamc.c +++ b/isamc/isamc.c @@ -1,8 +1,5 @@ -/* $Id: isamc.c,v 1.29 2005-01-15 19:38:31 adam Exp $ - Copyright (C) 1995-2005 - Index Data ApS - -This file is part of the Zebra server. +/* This file is part of the Zebra server. + Copyright (C) 1994-2011 Index Data Zebra is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free @@ -15,15 +12,18 @@ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License -along with Zebra; see the file LICENSE.zebra. If not, write to the -Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ /* * TODO: - * Reduction to lower categories in isc_merge + * Reduction to lower categories in isamc_merge */ +#if HAVE_CONFIG_H +#include +#endif #include #include #include @@ -41,7 +41,7 @@ static void init_fc (ISAMC is, int cat); #define SMALL_TEST 0 -void isc_getmethod (ISAMC_M *m) +void isamc_getmethod (ISAMC_M *m) { static struct ISAMC_filecat_s def_cat[] = { @@ -73,7 +73,7 @@ void isc_getmethod (ISAMC_M *m) m->max_blocks_mem = 10; } -ISAMC isc_open (BFiles bfs, const char *name, int writeflag, ISAMC_M *method) +ISAMC isamc_open (BFiles bfs, const char *name, int writeflag, ISAMC_M *method) { ISAMC is; ISAMC_filecat filecat; @@ -119,18 +119,10 @@ ISAMC isc_open (BFiles bfs, const char *name, int writeflag, ISAMC_M *method) is->merge_buf = NULL; for (i = 0; ino_files; i++) { - char fname[512]; - - sprintf (fname, "%s%c", name, i+'A'); - is->files[i].bf = bf_open (bfs, fname, is->method->filecat[i].bsize, - writeflag); + is->files[i].bf = 0; is->files[i].head_is_dirty = 0; - if (!bf_read (is->files[i].bf, 0, 0, sizeof(ISAMC_head), - &is->files[i].head)) - { - is->files[i].head.lastblock = 1; - is->files[i].head.freelist = 0; - } + is->files[i].head.lastblock = 1; + is->files[i].head.freelist = 0; is->files[i].alloc_entries_num = 0; is->files[i].alloc_entries_max = is->method->filecat[i].bsize / sizeof(zint) - 1; @@ -151,17 +143,39 @@ ISAMC isc_open (BFiles bfs, const char *name, int writeflag, ISAMC_M *method) init_fc (is, i); } + + for (i = 0; ino_files; i++) + { + char fname[FILENAME_MAX]; + int r; + + sprintf (fname, "%s%c", name, i+'A'); + is->files[i].bf = bf_open (bfs, fname, is->method->filecat[i].bsize, + writeflag); + if (!is->files[i].bf) + { + isamc_close(is); + return 0; + } + r = bf_read(is->files[i].bf, 0, 0, sizeof(ISAMC_head), + &is->files[i].head); + if (r == -1) + { + isamc_close(is); + return 0; + } + } return is; } -zint isc_block_used (ISAMC is, int type) +zint isamc_block_used (ISAMC is, int type) { if (type < 0 || type >= is->no_files) return -1; return is->files[type].head.lastblock-1; } -int isc_block_size (ISAMC is, int type) +int isamc_block_size (ISAMC is, int type) { ISAMC_filecat filecat = is->method->filecat; if (type < 0 || type >= is->no_files) @@ -169,7 +183,7 @@ int isc_block_size (ISAMC is, int type) return filecat[type].bsize; } -int isc_close (ISAMC is) +int isamc_close (ISAMC is) { int i; @@ -194,21 +208,24 @@ int isc_close (ISAMC is) for (i = 0; ino_files; i++) { release_fc (is, i); - assert (is->files[i].bf); - if (is->files[i].head_is_dirty) - bf_write (is->files[i].bf, 0, 0, sizeof(ISAMC_head), - &is->files[i].head); if (is->method->debug) yaz_log (YLOG_LOG, "isc:%8d%8d%8d%8d%8d%8d", - is->files[i].no_writes, - is->files[i].no_reads, - is->files[i].no_skip_writes, - is->files[i].no_allocated, - is->files[i].no_released, - is->files[i].no_remap); - xfree (is->files[i].fc_list); - flush_block (is, i); - bf_close (is->files[i].bf); + is->files[i].no_writes, + is->files[i].no_reads, + is->files[i].no_skip_writes, + is->files[i].no_allocated, + is->files[i].no_released, + is->files[i].no_remap); + if (is->files[i].bf) + { + if (is->files[i].head_is_dirty) + bf_write (is->files[i].bf, 0, 0, sizeof(ISAMC_head), + &is->files[i].head); + flush_block (is, i); + bf_close (is->files[i].bf); + } + xfree(is->files[i].fc_list); + xfree(is->files[i].alloc_buf); } xfree (is->files); xfree (is->merge_buf); @@ -217,13 +234,13 @@ int isc_close (ISAMC is) return 0; } -int isc_read_block (ISAMC is, int cat, zint pos, char *dst) +int isamc_read_block (ISAMC is, int cat, zint pos, char *dst) { ++(is->files[cat].no_reads); return bf_read (is->files[cat].bf, pos, 0, 0, dst); } -int isc_write_block (ISAMC is, int cat, zint pos, char *src) +int isamc_write_block (ISAMC is, int cat, zint pos, char *src) { ++(is->files[cat].no_writes); if (is->method->debug > 2) @@ -231,7 +248,7 @@ int isc_write_block (ISAMC is, int cat, zint pos, char *src) return bf_write (is->files[cat].bf, pos, 0, 0, src); } -int isc_write_dblock (ISAMC is, int cat, zint pos, char *src, +int isamc_write_dblock (ISAMC is, int cat, zint pos, char *src, zint nextpos, int offset) { ISAMC_BLOCK_SIZE size = offset + ISAMC_BLOCK_OFFSET_N; @@ -241,7 +258,7 @@ int isc_write_dblock (ISAMC is, int cat, zint pos, char *src, src -= ISAMC_BLOCK_OFFSET_N; memcpy (src, &nextpos, sizeof(nextpos)); memcpy (src + sizeof(nextpos), &size, sizeof(size)); - return isc_write_block (is, cat, pos, src); + return isamc_write_block (is, cat, pos, src); } #if ISAMC_FREELIST_CHUNK @@ -255,7 +272,6 @@ static void flush_block (ISAMC is, int cat) bf_write (is->files[cat].bf, block, 0, 0, abuf); is->files[cat].alloc_entries_num = 0; } - xfree (abuf); } static zint alloc_block (ISAMC is, int cat) @@ -343,8 +359,6 @@ static void release_block (ISAMC is, int cat, zint pos) #else static void flush_block (ISAMC is, int cat) { - char *abuf = is->files[cat].alloc_buf; - xfree (abuf); } static zint alloc_block (ISAMC is, int cat) @@ -376,7 +390,7 @@ static void release_block (ISAMC is, int cat, zint pos) } #endif -zint isc_alloc_block (ISAMC is, int cat) +zint isamc_alloc_block (ISAMC is, int cat) { zint block = 0; @@ -399,7 +413,7 @@ zint isc_alloc_block (ISAMC is, int cat) return block; } -void isc_release_block (ISAMC is, int cat, zint pos) +void isamc_release_block (ISAMC is, int cat, zint pos) { if (is->method->debug > 3) yaz_log (YLOG_LOG, "isc: release_block in cat %d:" ZINT_FORMAT, cat, pos); @@ -440,7 +454,7 @@ static void release_fc (ISAMC is, int cat) } } -void isc_pp_close (ISAMC_PP pp) +void isamc_pp_close (ISAMC_PP pp) { ISAMC is = pp->is; @@ -449,13 +463,13 @@ void isc_pp_close (ISAMC_PP pp) xfree (pp); } -ISAMC_PP isc_pp_open (ISAMC is, ISAMC_P ipos) +ISAMC_PP isamc_pp_open (ISAMC is, ISAM_P ipos) { ISAMC_PP pp = (ISAMC_PP) xmalloc (sizeof(*pp)); char *src; - pp->cat = (int) isc_type(ipos); - pp->pos = isc_block(ipos); + pp->cat = (int) isamc_type(ipos); + pp->pos = isamc_block(ipos); src = pp->buf = (char *) xmalloc (is->method->filecat[pp->cat].bsize); @@ -470,7 +484,7 @@ ISAMC_PP isc_pp_open (ISAMC is, ISAMC_P ipos) if (pp->pos) { src = pp->buf; - isc_read_block (is, pp->cat, pp->pos, src); + isamc_read_block (is, pp->cat, pp->pos, src); memcpy (&pp->next, src, sizeof(pp->next)); src += sizeof(pp->next); memcpy (&pp->size, src, sizeof(pp->size)); @@ -493,10 +507,10 @@ ISAMC_PP isc_pp_open (ISAMC is, ISAMC_P ipos) } /* returns non-zero if item could be read; 0 otherwise */ -int isc_pp_read (ISAMC_PP pp, void *buf) +int isamc_pp_read (ISAMC_PP pp, void *buf) { char *cp = buf; - return isc_read_item (pp, &cp); + return isamc_read_item (pp, &cp); } /* read one item from file - decode and store it in *dst. @@ -504,7 +518,7 @@ int isc_pp_read (ISAMC_PP pp, void *buf) 0 if end-of-file 1 if item could be read ok and NO boundary 2 if item could be read ok and boundary */ -int isc_read_item (ISAMC_PP pp, char **dst) +int isamc_read_item (ISAMC_PP pp, char **dst) { ISAMC is = pp->is; const char *src = pp->buf + pp->offset; @@ -540,7 +554,7 @@ int isc_read_item (ISAMC_PP pp, char **dst) pp->pos = pp->next; src = pp->buf; /* read block and save 'next' and 'size' entry */ - isc_read_block (is, pp->cat, pp->pos, pp->buf); + isamc_read_block (is, pp->cat, pp->pos, pp->buf); memcpy (&pp->next, src, sizeof(pp->next)); src += sizeof(pp->next); memcpy (&pp->size, src, sizeof(pp->size)); @@ -556,7 +570,7 @@ int isc_read_item (ISAMC_PP pp, char **dst) } if (pp->deleteFlag) - isc_release_block (is, pp->cat, pp->pos); + isamc_release_block (is, pp->cat, pp->pos); (*is->method->codec.decode)(pp->decodeClientData, dst, &src); pp->offset = src - pp->buf; if (is->method->debug > 2) @@ -569,8 +583,17 @@ int isc_read_item (ISAMC_PP pp, char **dst) return 1; } -zint isc_pp_num (ISAMC_PP pp) +zint isamc_pp_num (ISAMC_PP pp) { return pp->numKeys; } +/* + * Local variables: + * c-basic-offset: 4 + * c-file-style: "Stroustrup" + * indent-tabs-mode: nil + * End: + * vim: shiftwidth=4 tabstop=8 expandtab + */ +