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|
/*-
* Copyright (c) 2014-2016 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
#ifdef HAVE_DIAGNOSTIC
/*
* We pass around a session handle and output information, group it together.
*/
typedef struct __wt_dbg WT_DBG;
struct __wt_dbg {
WT_SESSION_IMPL *session; /* Enclosing session */
/*
* When using the standard event handlers, the debugging output has to
* do its own message handling because its output isn't line-oriented.
*/
FILE *fp; /* Optional file handle */
WT_ITEM *msg; /* Buffered message */
int (*f)(WT_DBG *, const char *, ...) /* Function to write */
WT_GCC_FUNC_DECL_ATTRIBUTE((format (printf, 2, 3)));
WT_ITEM *tmp; /* Temporary space */
};
static const /* Output separator */
char * const sep = "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n";
static int __debug_cell(WT_DBG *, const WT_PAGE_HEADER *, WT_CELL_UNPACK *);
static int __debug_cell_data(
WT_DBG *, WT_PAGE *, int type, const char *, WT_CELL_UNPACK *);
static int __debug_col_skip(WT_DBG *, WT_INSERT_HEAD *, const char *, bool);
static int __debug_config(WT_SESSION_IMPL *, WT_DBG *, const char *);
static int __debug_dsk_cell(WT_DBG *, const WT_PAGE_HEADER *);
static int __debug_dsk_col_fix(WT_DBG *, const WT_PAGE_HEADER *);
static int __debug_item(WT_DBG *, const char *, const void *, size_t);
static int __debug_page(WT_DBG *, WT_REF *, uint32_t);
static int __debug_page_col_fix(WT_DBG *, WT_REF *);
static int __debug_page_col_int(WT_DBG *, WT_PAGE *, uint32_t);
static int __debug_page_col_var(WT_DBG *, WT_REF *);
static int __debug_page_metadata(WT_DBG *, WT_REF *);
static int __debug_page_row_int(WT_DBG *, WT_PAGE *, uint32_t);
static int __debug_page_row_leaf(WT_DBG *, WT_PAGE *);
static int __debug_ref(WT_DBG *, WT_REF *);
static int __debug_row_skip(WT_DBG *, WT_INSERT_HEAD *);
static int __debug_tree(
WT_SESSION_IMPL *, WT_BTREE *, WT_REF *, const char *, uint32_t);
static int __debug_update(WT_DBG *, WT_UPDATE *, bool);
static int __dmsg_wrapup(WT_DBG *);
/*
* __wt_debug_set_verbose --
* Set verbose flags from the debugger.
*/
int
__wt_debug_set_verbose(WT_SESSION_IMPL *session, const char *v)
{
const char *cfg[2] = { NULL, NULL };
char buf[256];
snprintf(buf, sizeof(buf), "verbose=[%s]", v);
cfg[0] = buf;
return (__wt_verbose_config(session, cfg));
}
/*
* __debug_hex_byte --
* Output a single byte in hex.
*/
static inline int
__debug_hex_byte(WT_DBG *ds, uint8_t v)
{
return (ds->f(
ds, "#%c%c", __wt_hex[(v & 0xf0) >> 4], __wt_hex[v & 0x0f]));
}
/*
* __dmsg_event --
* Send a debug message to the event handler.
*/
static int
__dmsg_event(WT_DBG *ds, const char *fmt, ...)
{
WT_ITEM *msg;
WT_SESSION_IMPL *session;
size_t len, space;
va_list ap;
char *p;
session = ds->session;
/*
* Debug output chunks are not necessarily terminated with a newline
* character. It's easy if we're dumping to a stream, but if we're
* dumping to an event handler, which is line-oriented, we must buffer
* the output chunk, and pass it to the event handler once we see a
* terminating newline.
*/
msg = ds->msg;
for (;;) {
p = (char *)msg->mem + msg->size;
space = msg->memsize - msg->size;
va_start(ap, fmt);
len = (size_t)vsnprintf(p, space, fmt, ap);
va_end(ap);
/* Check if there was enough space. */
if (len < space) {
msg->size += len;
break;
}
/*
* There's not much to do on error without checking for
* an error return on every single printf. Anyway, it's
* pretty unlikely and this is debugging output, I'm not
* going to worry about it.
*/
WT_RET(__wt_buf_grow(session, msg, msg->memsize + len + 128));
}
if (((uint8_t *)msg->mem)[msg->size - 1] == '\n') {
((uint8_t *)msg->mem)[msg->size - 1] = '\0';
WT_RET(__wt_msg(session, "%s", (char *)msg->mem));
msg->size = 0;
}
return (0);
}
/*
* __dmsg_file --
* Send a debug message to a file.
*/
static int
__dmsg_file(WT_DBG *ds, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
(void)vfprintf(ds->fp, fmt, ap);
va_end(ap);
return (0);
}
/*
* __debug_config --
* Configure debugging output.
*/
static int
__debug_config(WT_SESSION_IMPL *session, WT_DBG *ds, const char *ofile)
{
memset(ds, 0, sizeof(WT_DBG));
ds->session = session;
WT_RET(__wt_scr_alloc(session, 512, &ds->tmp));
/*
* If we weren't given a file, we use the default event handler, and
* we'll have to buffer messages.
*/
if (ofile == NULL) {
WT_RET(__wt_scr_alloc(session, 512, &ds->msg));
ds->f = __dmsg_event;
} else {
if ((ds->fp = fopen(ofile, "w")) == NULL)
return (EIO);
__wt_stream_set_line_buffer(ds->fp);
ds->f = __dmsg_file;
}
return (0);
}
/*
* __dmsg_wrapup --
* Flush any remaining output, release resources.
*/
static int
__dmsg_wrapup(WT_DBG *ds)
{
WT_SESSION_IMPL *session;
WT_ITEM *msg;
session = ds->session;
msg = ds->msg;
__wt_scr_free(session, &ds->tmp);
/*
* Discard the buffer -- it shouldn't have anything in it, but might
* as well be cautious.
*/
if (msg != NULL) {
if (msg->size != 0)
WT_RET(__wt_msg(session, "%s", (char *)msg->mem));
__wt_scr_free(session, &ds->msg);
}
/* Close any file we opened. */
if (ds->fp != NULL)
(void)fclose(ds->fp);
return (0);
}
/*
* __wt_debug_addr_print --
* Print out an address.
*/
int
__wt_debug_addr_print(
WT_SESSION_IMPL *session, const uint8_t *addr, size_t addr_size)
{
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_RET(__wt_scr_alloc(session, 128, &buf));
ret = __wt_fprintf(session, WT_STDERR(session),
"%s\n", __wt_addr_string(session, addr, addr_size, buf));
__wt_scr_free(session, &buf);
return (ret);
}
/*
* __wt_debug_addr --
* Read and dump a disk page in debugging mode, using an addr/size pair.
*/
int
__wt_debug_addr(WT_SESSION_IMPL *session,
const uint8_t *addr, size_t addr_size, const char *ofile)
{
WT_BM *bm;
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_ASSERT(session, S2BT_SAFE(session) != NULL);
bm = S2BT(session)->bm;
WT_RET(__wt_scr_alloc(session, 1024, &buf));
WT_ERR(bm->read(bm, session, buf, addr, addr_size));
ret = __wt_debug_disk(session, buf->mem, ofile);
err: __wt_scr_free(session, &buf);
return (ret);
}
/*
* __wt_debug_offset_blind --
* Read and dump a disk page in debugging mode, using a file offset.
*/
int
__wt_debug_offset_blind(
WT_SESSION_IMPL *session, wt_off_t offset, const char *ofile)
{
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_ASSERT(session, S2BT_SAFE(session) != NULL);
/*
* This routine depends on the default block manager's view of files,
* where an address consists of a file offset, length, and checksum.
* This is for debugging only. Other block managers might not see a
* file or address the same way, that's why there's no block manager
* method.
*/
WT_RET(__wt_scr_alloc(session, 1024, &buf));
WT_ERR(__wt_block_read_off_blind(
session, S2BT(session)->bm->block, buf, offset));
ret = __wt_debug_disk(session, buf->mem, ofile);
err: __wt_scr_free(session, &buf);
return (ret);
}
/*
* __wt_debug_offset --
* Read and dump a disk page in debugging mode, using a file
* offset/size/checksum triplet.
*/
int
__wt_debug_offset(WT_SESSION_IMPL *session,
wt_off_t offset, uint32_t size, uint32_t cksum, const char *ofile)
{
WT_DECL_ITEM(buf);
WT_DECL_RET;
uint8_t addr[WT_BTREE_MAX_ADDR_COOKIE], *endp;
WT_ASSERT(session, S2BT_SAFE(session) != NULL);
/*
* This routine depends on the default block manager's view of files,
* where an address consists of a file offset, length, and checksum.
* This is for debugging only: other block managers might not see a
* file or address the same way, that's why there's no block manager
* method.
*
* Convert the triplet into an address structure.
*/
endp = addr;
WT_RET(__wt_block_addr_to_buffer(
S2BT(session)->bm->block, &endp, offset, size, cksum));
/*
* Read the address through the btree I/O functions (so the block is
* decompressed as necessary).
*/
WT_RET(__wt_scr_alloc(session, 0, &buf));
WT_ERR(__wt_bt_read(session, buf, addr, WT_PTRDIFF(endp, addr)));
ret = __wt_debug_disk(session, buf->mem, ofile);
err: __wt_scr_free(session, &buf);
return (ret);
}
/*
* __wt_debug_disk --
* Dump a disk page in debugging mode.
*/
int
__wt_debug_disk(
WT_SESSION_IMPL *session, const WT_PAGE_HEADER *dsk, const char *ofile)
{
WT_DBG *ds, _ds;
ds = &_ds;
WT_RET(__debug_config(session, ds, ofile));
WT_RET(ds->f(ds, "%s page", __wt_page_type_string(dsk->type)));
switch (dsk->type) {
case WT_PAGE_BLOCK_MANAGER:
break;
case WT_PAGE_COL_FIX:
case WT_PAGE_COL_INT:
case WT_PAGE_COL_VAR:
WT_RET(ds->f(ds, ", recno %" PRIu64, dsk->recno));
/* FALLTHROUGH */
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
WT_RET(ds->f(ds, ", entries %" PRIu32, dsk->u.entries));
break;
case WT_PAGE_OVFL:
WT_RET(ds->f(ds, ", datalen %" PRIu32, dsk->u.datalen));
break;
WT_ILLEGAL_VALUE(session);
}
if (F_ISSET(dsk, WT_PAGE_COMPRESSED))
WT_RET(ds->f(ds, ", compressed"));
if (F_ISSET(dsk, WT_PAGE_ENCRYPTED))
WT_RET(ds->f(ds, ", encrypted"));
if (F_ISSET(dsk, WT_PAGE_EMPTY_V_ALL))
WT_RET(ds->f(ds, ", empty-all"));
if (F_ISSET(dsk, WT_PAGE_EMPTY_V_NONE))
WT_RET(ds->f(ds, ", empty-none"));
if (F_ISSET(dsk, WT_PAGE_LAS_UPDATE))
WT_RET(ds->f(ds, ", LAS-update"));
WT_RET(ds->f(ds, ", generation %" PRIu64 "\n", dsk->write_gen));
switch (dsk->type) {
case WT_PAGE_BLOCK_MANAGER:
break;
case WT_PAGE_COL_FIX:
WT_RET(__debug_dsk_col_fix(ds, dsk));
break;
case WT_PAGE_COL_INT:
case WT_PAGE_COL_VAR:
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
WT_RET(__debug_dsk_cell(ds, dsk));
break;
default:
break;
}
return (__dmsg_wrapup(ds));
}
/*
* __debug_dsk_col_fix --
* Dump a WT_PAGE_COL_FIX page.
*/
static int
__debug_dsk_col_fix(WT_DBG *ds, const WT_PAGE_HEADER *dsk)
{
WT_BTREE *btree;
uint32_t i;
uint8_t v;
WT_ASSERT(ds->session, S2BT_SAFE(ds->session) != NULL);
btree = S2BT(ds->session);
WT_FIX_FOREACH(btree, dsk, v, i) {
WT_RET(ds->f(ds, "\t{"));
WT_RET(__debug_hex_byte(ds, v));
WT_RET(ds->f(ds, "}\n"));
}
return (0);
}
/*
* __debug_dsk_cell --
* Dump a page of WT_CELL's.
*/
static int
__debug_dsk_cell(WT_DBG *ds, const WT_PAGE_HEADER *dsk)
{
WT_BTREE *btree;
WT_CELL *cell;
WT_CELL_UNPACK *unpack, _unpack;
uint32_t i;
WT_ASSERT(ds->session, S2BT_SAFE(ds->session) != NULL);
btree = S2BT(ds->session);
unpack = &_unpack;
WT_CELL_FOREACH(btree, dsk, cell, unpack, i) {
__wt_cell_unpack(cell, unpack);
WT_RET(__debug_cell(ds, dsk, unpack));
}
return (0);
}
/*
* __debug_tree_shape_info --
* Pretty-print information about a page.
*/
static char *
__debug_tree_shape_info(WT_PAGE *page)
{
uint64_t v;
static char buf[32];
v = page->memory_footprint;
if (v >= WT_GIGABYTE)
snprintf(buf, sizeof(buf),
"(%p %" PRIu64 "G)", (void *)page, v / WT_GIGABYTE);
else if (v >= WT_MEGABYTE)
snprintf(buf, sizeof(buf),
"(%p %" PRIu64 "M)", (void *)page, v / WT_MEGABYTE);
else
snprintf(buf, sizeof(buf), "(%p %" PRIu64 ")", (void *)page, v);
return (buf);
}
/*
* __debug_tree_shape_worker --
* Dump information about the current page and descend.
*/
static int
__debug_tree_shape_worker(WT_DBG *ds, WT_PAGE *page, int level)
{
WT_REF *ref;
WT_SESSION_IMPL *session;
session = ds->session;
if (WT_PAGE_IS_INTERNAL(page)) {
WT_RET(ds->f(ds, "%*s" "I" "%d %s\n",
level * 3, " ", level, __debug_tree_shape_info(page)));
WT_INTL_FOREACH_BEGIN(session, page, ref) {
if (ref->state == WT_REF_MEM)
WT_RET(__debug_tree_shape_worker(
ds, ref->page, level + 1));
} WT_INTL_FOREACH_END;
} else
WT_RET(ds->f(ds, "%*s" "L" " %s\n",
level * 3, " ", __debug_tree_shape_info(page)));
return (0);
}
/*
* __wt_debug_tree_shape --
* Dump the shape of the in-memory tree.
*/
int
__wt_debug_tree_shape(
WT_SESSION_IMPL *session, WT_PAGE *page, const char *ofile)
{
WT_DBG *ds, _ds;
WT_DECL_RET;
WT_ASSERT(session, S2BT_SAFE(session) != NULL);
ds = &_ds;
WT_RET(__debug_config(session, ds, ofile));
/* A NULL page starts at the top of the tree -- it's a convenience. */
if (page == NULL)
page = S2BT(session)->root.page;
WT_WITH_PAGE_INDEX(session,
ret = __debug_tree_shape_worker(ds, page, 1));
WT_RET(ret);
return (__dmsg_wrapup(ds));
}
#define WT_DEBUG_TREE_LEAF 0x01 /* Debug leaf pages */
#define WT_DEBUG_TREE_WALK 0x02 /* Descend the tree */
/*
* __wt_debug_tree_all --
* Dump the in-memory information for a tree, including leaf pages.
* Takes an explicit btree as an argument, as one may not yet be set on
* the session. This is often the case as this function will be called
* from within a debugger, which makes setting a btree complicated.
*/
int
__wt_debug_tree_all(
WT_SESSION_IMPL *session, WT_BTREE *btree, WT_REF *ref, const char *ofile)
{
return (__debug_tree(session,
btree, ref, ofile, WT_DEBUG_TREE_LEAF | WT_DEBUG_TREE_WALK));
}
/*
* __wt_debug_tree --
* Dump the in-memory information for a tree, not including leaf pages.
* Takes an explicit btree as an argument, as one may not yet be set on
* the session. This is often the case as this function will be called
* from within a debugger, which makes setting a btree complicated.
*/
int
__wt_debug_tree(
WT_SESSION_IMPL *session, WT_BTREE *btree, WT_REF *ref, const char *ofile)
{
return (__debug_tree(session, btree, ref, ofile, WT_DEBUG_TREE_WALK));
}
/*
* __wt_debug_page --
* Dump the in-memory information for a page.
*/
int
__wt_debug_page(WT_SESSION_IMPL *session, WT_REF *ref, const char *ofile)
{
WT_DBG *ds, _ds;
WT_ASSERT(session, S2BT_SAFE(session) != NULL);
ds = &_ds;
WT_RET(__debug_config(session, ds, ofile));
WT_RET(__debug_page(ds, ref, WT_DEBUG_TREE_LEAF));
return (__dmsg_wrapup(ds));
}
/*
* __debug_tree --
* Dump the in-memory information for a tree. Takes an explicit btree
* as an argument, as one may not be set on the session. This is often
* the case as this function will be called from within a debugger, which
* makes setting a btree complicated. We mark the session to the btree
* in this function
*/
static int
__debug_tree(WT_SESSION_IMPL *session,
WT_BTREE *btree, WT_REF *ref, const char *ofile, uint32_t flags)
{
WT_DBG *ds, _ds;
WT_DECL_RET;
ds = &_ds;
WT_RET(__debug_config(session, ds, ofile));
/* A NULL page starts at the top of the tree -- it's a convenience. */
if (ref == NULL)
ref = &btree->root;
WT_WITH_BTREE(session, btree, ret = __debug_page(ds, ref, flags));
WT_RET(ret);
return (__dmsg_wrapup(ds));
}
/*
* __debug_page --
* Dump the in-memory information for an in-memory page.
*/
static int
__debug_page(WT_DBG *ds, WT_REF *ref, uint32_t flags)
{
WT_DECL_RET;
WT_SESSION_IMPL *session;
session = ds->session;
/* Dump the page metadata. */
WT_WITH_PAGE_INDEX(session, ret = __debug_page_metadata(ds, ref));
WT_RET(ret);
/* Dump the page. */
switch (ref->page->type) {
case WT_PAGE_COL_FIX:
if (LF_ISSET(WT_DEBUG_TREE_LEAF))
WT_RET(__debug_page_col_fix(ds, ref));
break;
case WT_PAGE_COL_INT:
WT_WITH_PAGE_INDEX(session,
ret = __debug_page_col_int(ds, ref->page, flags));
WT_RET(ret);
break;
case WT_PAGE_COL_VAR:
if (LF_ISSET(WT_DEBUG_TREE_LEAF))
WT_RET(__debug_page_col_var(ds, ref));
break;
case WT_PAGE_ROW_INT:
WT_WITH_PAGE_INDEX(session,
ret = __debug_page_row_int(ds, ref->page, flags));
WT_RET(ret);
break;
case WT_PAGE_ROW_LEAF:
if (LF_ISSET(WT_DEBUG_TREE_LEAF))
WT_RET(__debug_page_row_leaf(ds, ref->page));
break;
WT_ILLEGAL_VALUE(session);
}
return (0);
}
/*
* __debug_page_metadata --
* Dump an in-memory page's metadata.
*/
static int
__debug_page_metadata(WT_DBG *ds, WT_REF *ref)
{
WT_PAGE *page;
WT_PAGE_INDEX *pindex;
WT_PAGE_MODIFY *mod;
WT_SESSION_IMPL *session;
uint32_t entries;
session = ds->session;
page = ref->page;
mod = page->modify;
WT_RET(ds->f(ds, "%p", (void *)page));
switch (page->type) {
case WT_PAGE_COL_INT:
WT_RET(ds->f(ds, " recno %" PRIu64, ref->ref_recno));
WT_INTL_INDEX_GET(session, page, pindex);
entries = pindex->entries;
break;
case WT_PAGE_COL_FIX:
WT_RET(ds->f(ds, " recno %" PRIu64, ref->ref_recno));
entries = page->pg_fix_entries;
break;
case WT_PAGE_COL_VAR:
WT_RET(ds->f(ds, " recno %" PRIu64, ref->ref_recno));
entries = page->pg_var_entries;
break;
case WT_PAGE_ROW_INT:
WT_INTL_INDEX_GET(session, page, pindex);
entries = pindex->entries;
break;
case WT_PAGE_ROW_LEAF:
entries = page->pg_row_entries;
break;
WT_ILLEGAL_VALUE(session);
}
WT_RET(ds->f(ds, ": %s\n", __wt_page_type_string(page->type)));
WT_RET(ds->f(ds,
"\t" "disk %p, entries %" PRIu32, (void *)page->dsk, entries));
WT_RET(ds->f(ds,
", %s", __wt_page_is_modified(page) ? "dirty" : "clean"));
WT_RET(ds->f(ds, ", %s", __wt_rwlock_islocked(
session, &page->page_lock) ? "locked" : "unlocked"));
if (F_ISSET_ATOMIC(page, WT_PAGE_BUILD_KEYS))
WT_RET(ds->f(ds, ", keys-built"));
if (F_ISSET_ATOMIC(page, WT_PAGE_DISK_ALLOC))
WT_RET(ds->f(ds, ", disk-alloc"));
if (F_ISSET_ATOMIC(page, WT_PAGE_DISK_MAPPED))
WT_RET(ds->f(ds, ", disk-mapped"));
if (F_ISSET_ATOMIC(page, WT_PAGE_EVICT_LRU))
WT_RET(ds->f(ds, ", evict-lru"));
if (F_ISSET_ATOMIC(page, WT_PAGE_OVERFLOW_KEYS))
WT_RET(ds->f(ds, ", overflow-keys"));
if (F_ISSET_ATOMIC(page, WT_PAGE_SPLIT_BLOCK))
WT_RET(ds->f(ds, ", split-block"));
if (F_ISSET_ATOMIC(page, WT_PAGE_SPLIT_INSERT))
WT_RET(ds->f(ds, ", split-insert"));
if (F_ISSET_ATOMIC(page, WT_PAGE_UPDATE_IGNORE))
WT_RET(ds->f(ds, ", update-ignore"));
if (mod != NULL)
switch (mod->rec_result) {
case WT_PM_REC_EMPTY:
WT_RET(ds->f(ds, ", empty"));
break;
case WT_PM_REC_MULTIBLOCK:
WT_RET(ds->f(ds, ", multiblock"));
break;
case WT_PM_REC_REPLACE:
WT_RET(ds->f(ds, ", replaced"));
break;
case 0:
break;
WT_ILLEGAL_VALUE(session);
}
if (mod != NULL)
WT_RET(
ds->f(ds, ", write generation=%" PRIu32, mod->write_gen));
WT_RET(ds->f(ds, "\n"));
return (0);
}
/*
* __debug_page_col_fix --
* Dump an in-memory WT_PAGE_COL_FIX page.
*/
static int
__debug_page_col_fix(WT_DBG *ds, WT_REF *ref)
{
WT_BTREE *btree;
WT_INSERT *ins;
WT_PAGE *page;
const WT_PAGE_HEADER *dsk;
WT_SESSION_IMPL *session;
uint64_t recno;
uint32_t i;
uint8_t v;
WT_ASSERT(ds->session, S2BT_SAFE(ds->session) != NULL);
session = ds->session;
btree = S2BT(session);
page = ref->page;
dsk = page->dsk;
recno = ref->ref_recno;
if (dsk != NULL) {
ins = WT_SKIP_FIRST(WT_COL_UPDATE_SINGLE(page));
WT_FIX_FOREACH(btree, dsk, v, i) {
WT_RET(ds->f(ds, "\t%" PRIu64 "\t{", recno));
WT_RET(__debug_hex_byte(ds, v));
WT_RET(ds->f(ds, "}\n"));
/* Check for a match on the update list. */
if (ins != NULL && WT_INSERT_RECNO(ins) == recno) {
WT_RET(ds->f(ds, "\tupdate %" PRIu64 "\n",
WT_INSERT_RECNO(ins)));
WT_RET(__debug_update(ds, ins->upd, true));
ins = WT_SKIP_NEXT(ins);
}
++recno;
}
}
if (WT_COL_UPDATE_SINGLE(page) != NULL) {
WT_RET(ds->f(ds, "%s", sep));
WT_RET(__debug_col_skip(
ds, WT_COL_UPDATE_SINGLE(page), "update", true));
}
if (WT_COL_APPEND(page) != NULL) {
WT_RET(ds->f(ds, "%s", sep));
WT_RET(__debug_col_skip(ds,
WT_COL_APPEND(page), "append", true));
}
return (0);
}
/*
* __debug_page_col_int --
* Dump an in-memory WT_PAGE_COL_INT page.
*/
static int
__debug_page_col_int(WT_DBG *ds, WT_PAGE *page, uint32_t flags)
{
WT_REF *ref;
WT_SESSION_IMPL *session;
session = ds->session;
WT_INTL_FOREACH_BEGIN(session, page, ref) {
WT_RET(ds->f(ds, "\trecno %" PRIu64 "\n", ref->ref_recno));
WT_RET(__debug_ref(ds, ref));
} WT_INTL_FOREACH_END;
if (LF_ISSET(WT_DEBUG_TREE_WALK))
WT_INTL_FOREACH_BEGIN(session, page, ref) {
if (ref->state == WT_REF_MEM) {
WT_RET(ds->f(ds, "\n"));
WT_RET(__debug_page(ds, ref, flags));
}
} WT_INTL_FOREACH_END;
return (0);
}
/*
* __debug_page_col_var --
* Dump an in-memory WT_PAGE_COL_VAR page.
*/
static int
__debug_page_col_var(WT_DBG *ds, WT_REF *ref)
{
WT_CELL *cell;
WT_CELL_UNPACK *unpack, _unpack;
WT_COL *cip;
WT_INSERT_HEAD *update;
WT_PAGE *page;
uint64_t recno, rle;
uint32_t i;
char tag[64];
unpack = &_unpack;
page = ref->page;
recno = ref->ref_recno;
WT_COL_FOREACH(page, cip, i) {
if ((cell = WT_COL_PTR(page, cip)) == NULL) {
unpack = NULL;
rle = 1;
} else {
__wt_cell_unpack(cell, unpack);
rle = __wt_cell_rle(unpack);
}
snprintf(tag, sizeof(tag), "%" PRIu64 " %" PRIu64, recno, rle);
WT_RET(
__debug_cell_data(ds, page, WT_PAGE_COL_VAR, tag, unpack));
if ((update = WT_COL_UPDATE(page, cip)) != NULL)
WT_RET(__debug_col_skip(ds, update, "update", false));
recno += rle;
}
if (WT_COL_APPEND(page) != NULL) {
WT_RET(ds->f(ds, "%s", sep));
WT_RET(__debug_col_skip(ds,
WT_COL_APPEND(page), "append", false));
}
return (0);
}
/*
* __debug_page_row_int --
* Dump an in-memory WT_PAGE_ROW_INT page.
*/
static int
__debug_page_row_int(WT_DBG *ds, WT_PAGE *page, uint32_t flags)
{
WT_REF *ref;
WT_SESSION_IMPL *session;
size_t len;
void *p;
session = ds->session;
WT_INTL_FOREACH_BEGIN(session, page, ref) {
__wt_ref_key(page, ref, &p, &len);
WT_RET(__debug_item(ds, "K", p, len));
WT_RET(__debug_ref(ds, ref));
} WT_INTL_FOREACH_END;
if (LF_ISSET(WT_DEBUG_TREE_WALK))
WT_INTL_FOREACH_BEGIN(session, page, ref) {
if (ref->state == WT_REF_MEM) {
WT_RET(ds->f(ds, "\n"));
WT_RET(__debug_page(ds, ref, flags));
}
} WT_INTL_FOREACH_END;
return (0);
}
/*
* __debug_page_row_leaf --
* Dump an in-memory WT_PAGE_ROW_LEAF page.
*/
static int
__debug_page_row_leaf(WT_DBG *ds, WT_PAGE *page)
{
WT_CELL *cell;
WT_CELL_UNPACK *unpack, _unpack;
WT_DECL_ITEM(key);
WT_DECL_RET;
WT_INSERT_HEAD *insert;
WT_ROW *rip;
WT_SESSION_IMPL *session;
WT_UPDATE *upd;
uint32_t i;
session = ds->session;
unpack = &_unpack;
WT_RET(__wt_scr_alloc(session, 256, &key));
/*
* Dump any K/V pairs inserted into the page before the first from-disk
* key on the page.
*/
if ((insert = WT_ROW_INSERT_SMALLEST(page)) != NULL)
WT_ERR(__debug_row_skip(ds, insert));
/* Dump the page's K/V pairs. */
WT_ROW_FOREACH(page, rip, i) {
WT_ERR(__wt_row_leaf_key(session, page, rip, key, false));
WT_ERR(__debug_item(ds, "K", key->data, key->size));
if ((cell = __wt_row_leaf_value_cell(page, rip, NULL)) == NULL)
WT_ERR(ds->f(ds, "\tV {}\n"));
else {
__wt_cell_unpack(cell, unpack);
WT_ERR(__debug_cell_data(
ds, page, WT_PAGE_ROW_LEAF, "V", unpack));
}
if ((upd = WT_ROW_UPDATE(page, rip)) != NULL)
WT_ERR(__debug_update(ds, upd, false));
if ((insert = WT_ROW_INSERT(page, rip)) != NULL)
WT_ERR(__debug_row_skip(ds, insert));
}
err: __wt_scr_free(session, &key);
return (ret);
}
/*
* __debug_col_skip --
* Dump a column-store skiplist.
*/
static int
__debug_col_skip(
WT_DBG *ds, WT_INSERT_HEAD *head, const char *tag, bool hexbyte)
{
WT_INSERT *ins;
WT_SKIP_FOREACH(ins, head) {
WT_RET(ds->f(ds,
"\t%s %" PRIu64 "\n", tag, WT_INSERT_RECNO(ins)));
WT_RET(__debug_update(ds, ins->upd, hexbyte));
}
return (0);
}
/*
* __debug_row_skip --
* Dump an insert list.
*/
static int
__debug_row_skip(WT_DBG *ds, WT_INSERT_HEAD *head)
{
WT_INSERT *ins;
WT_SKIP_FOREACH(ins, head) {
WT_RET(__debug_item(ds,
"insert", WT_INSERT_KEY(ins), WT_INSERT_KEY_SIZE(ins)));
WT_RET(__debug_update(ds, ins->upd, false));
}
return (0);
}
/*
* __debug_update --
* Dump an update list.
*/
static int
__debug_update(WT_DBG *ds, WT_UPDATE *upd, bool hexbyte)
{
for (; upd != NULL; upd = upd->next)
if (WT_UPDATE_DELETED_ISSET(upd))
WT_RET(ds->f(ds, "\tvalue {deleted}\n"));
else if (hexbyte) {
WT_RET(ds->f(ds, "\t{"));
WT_RET(__debug_hex_byte(ds,
*(uint8_t *)WT_UPDATE_DATA(upd)));
WT_RET(ds->f(ds, "}\n"));
} else
WT_RET(__debug_item(ds,
"value", WT_UPDATE_DATA(upd), upd->size));
return (0);
}
/*
* __debug_ref --
* Dump a WT_REF structure.
*/
static int
__debug_ref(WT_DBG *ds, WT_REF *ref)
{
WT_SESSION_IMPL *session;
size_t addr_size;
const uint8_t *addr;
session = ds->session;
WT_RET(ds->f(ds, "\t"));
switch (ref->state) {
case WT_REF_DISK:
WT_RET(ds->f(ds, "disk"));
break;
case WT_REF_DELETED:
WT_RET(ds->f(ds, "deleted"));
break;
case WT_REF_LOCKED:
WT_RET(ds->f(ds, "locked %p", (void *)ref->page));
break;
case WT_REF_MEM:
WT_RET(ds->f(ds, "memory %p", (void *)ref->page));
break;
case WT_REF_READING:
WT_RET(ds->f(ds, "reading"));
break;
case WT_REF_SPLIT:
WT_RET(ds->f(ds, "split"));
break;
default:
WT_RET(ds->f(ds, "INVALID"));
break;
}
__wt_ref_info(ref, &addr, &addr_size, NULL);
return (ds->f(ds, " %s\n",
__wt_addr_string(session, addr, addr_size, ds->tmp)));
}
/*
* __debug_cell --
* Dump a single unpacked WT_CELL.
*/
static int
__debug_cell(WT_DBG *ds, const WT_PAGE_HEADER *dsk, WT_CELL_UNPACK *unpack)
{
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_SESSION_IMPL *session;
const char *type;
session = ds->session;
WT_RET(ds->f(ds, "\t%s: len %" PRIu32,
__wt_cell_type_string(unpack->raw), unpack->size));
/* Dump cell's per-disk page type information. */
switch (dsk->type) {
case WT_PAGE_COL_INT:
switch (unpack->type) {
case WT_CELL_VALUE:
WT_RET(ds->f(ds, ", recno: %" PRIu64, unpack->v));
break;
}
break;
case WT_PAGE_COL_VAR:
switch (unpack->type) {
case WT_CELL_DEL:
case WT_CELL_KEY_OVFL_RM:
case WT_CELL_VALUE:
case WT_CELL_VALUE_OVFL:
case WT_CELL_VALUE_OVFL_RM:
WT_RET(ds->f(ds,
", rle: %" PRIu64, __wt_cell_rle(unpack)));
break;
}
break;
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
switch (unpack->type) {
case WT_CELL_KEY:
WT_RET(ds->f(ds, ", pfx: %" PRIu8, unpack->prefix));
break;
}
break;
}
/* Dump addresses. */
switch (unpack->raw) {
case WT_CELL_ADDR_DEL:
type = "addr/del";
goto addr;
case WT_CELL_ADDR_INT:
type = "addr/int";
goto addr;
case WT_CELL_ADDR_LEAF:
type = "addr/leaf";
goto addr;
case WT_CELL_ADDR_LEAF_NO:
type = "addr/leaf-no";
goto addr;
case WT_CELL_KEY_OVFL:
case WT_CELL_KEY_OVFL_RM:
case WT_CELL_VALUE_OVFL:
case WT_CELL_VALUE_OVFL_RM:
type = "ovfl";
addr: WT_RET(__wt_scr_alloc(session, 128, &buf));
WT_RET(ds->f(ds, ", %s %s", type,
__wt_addr_string(
session, unpack->data, unpack->size, buf)));
__wt_scr_free(session, &buf);
WT_RET(ret);
break;
}
WT_RET(ds->f(ds, "\n"));
return (__debug_cell_data(ds, NULL, dsk->type, NULL, unpack));
}
/*
* __debug_cell_data --
* Dump a single cell's data in debugging mode.
*/
static int
__debug_cell_data(WT_DBG *ds,
WT_PAGE *page, int page_type, const char *tag, WT_CELL_UNPACK *unpack)
{
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_SESSION_IMPL *session;
const char *p;
session = ds->session;
/*
* Column-store references to deleted cells return a NULL cell
* reference.
*/
if (unpack == NULL) {
WT_RET(__debug_item(ds, tag, "deleted", strlen("deleted")));
return (0);
}
switch (unpack->raw) {
case WT_CELL_ADDR_DEL:
case WT_CELL_ADDR_INT:
case WT_CELL_ADDR_LEAF:
case WT_CELL_ADDR_LEAF_NO:
case WT_CELL_DEL:
case WT_CELL_KEY_OVFL_RM:
case WT_CELL_VALUE_OVFL_RM:
p = __wt_cell_type_string(unpack->raw);
WT_RET(__debug_item(ds, tag, p, strlen(p)));
break;
case WT_CELL_KEY:
case WT_CELL_KEY_OVFL:
case WT_CELL_KEY_PFX:
case WT_CELL_KEY_SHORT:
case WT_CELL_KEY_SHORT_PFX:
case WT_CELL_VALUE:
case WT_CELL_VALUE_COPY:
case WT_CELL_VALUE_OVFL:
case WT_CELL_VALUE_SHORT:
WT_RET(__wt_scr_alloc(session, 256, &buf));
ret = page == NULL ?
__wt_dsk_cell_data_ref(session, page_type, unpack, buf) :
__wt_page_cell_data_ref(session, page, unpack, buf);
if (ret == 0)
WT_RET(__debug_item(ds, tag, buf->data, buf->size));
__wt_scr_free(session, &buf);
break;
WT_ILLEGAL_VALUE(session);
}
return (ret);
}
/*
* __debug_item --
* Dump a single data/size pair, with an optional tag.
*/
static int
__debug_item(WT_DBG *ds, const char *tag, const void *data_arg, size_t size)
{
size_t i;
u_char ch;
const uint8_t *data;
WT_RET(ds->f(ds,
"\t%s%s{", tag == NULL ? "" : tag, tag == NULL ? "" : " "));
for (data = data_arg, i = 0; i < size; ++i, ++data) {
ch = data[0];
if (__wt_isprint(ch))
WT_RET(ds->f(ds, "%c", (int)ch));
else
WT_RET(__debug_hex_byte(ds, data[0]));
}
WT_RET(ds->f(ds, "}\n"));
return (0);
}
#endif
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