68f50fe359
Panic in the block layer if we see page-level corruption failures even if it's not in DIAGNOSTIC mode, there's no reason to keep running. Don't panic in the btree layer if we're doing a verify and there's a decompression failure, verify should continue just like salvage. Rename the SALVAGE_QUIET_ERR flag to SALVAGE_CORRUPT_OK, for clarity.
167 lines
3.7 KiB
Python
167 lines
3.7 KiB
Python
# Output a C header file using the minimum number of distinct bits to ensure
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# flags don't collide.
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import os, re, sys
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from dist import compare_srcfile
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flags = {
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###################################################
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# Internal routine flag declarations
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###################################################
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'cache_flush' : [
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'SYNC_CHECKPOINT',
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'SYNC_DISCARD',
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'SYNC_DISCARD_NOWRITE',
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'SYNC_WRITE_LEAVES',
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],
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'file_types' : [
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'FILE_TYPE_DATA',
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'FILE_TYPE_LOG'
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],
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'log_scan' : [
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'LOGSCAN_FIRST',
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'LOGSCAN_FROM_CKP',
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'LOGSCAN_ONE',
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'LOGSCAN_RECOVER'
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],
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'log_write' : [
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'LOG_DSYNC',
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'LOG_FSYNC'
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],
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'rec_write' : [
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'EVICTION_SERVER_LOCKED',
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'SKIP_UPDATE_ERR',
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'SKIP_UPDATE_QUIT',
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],
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'shared_cache' : [
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'CACHE_POOL_RUN'
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],
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'tree_walk' : [
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'TREE_CACHE',
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'TREE_COMPACT',
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'TREE_DISCARD',
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'TREE_EVICT',
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'TREE_PREV',
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'TREE_SKIP_INTL',
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'TREE_SKIP_LEAF',
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'TREE_WAIT',
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],
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'txn_log_checkpoint' : [
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'TXN_LOG_CKPT_FAIL',
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'TXN_LOG_CKPT_PREPARE',
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'TXN_LOG_CKPT_START',
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'TXN_LOG_CKPT_STOP',
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],
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'verbose' : [
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'VERB_block',
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'VERB_ckpt',
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'VERB_compact',
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'VERB_evict',
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'VERB_evictserver',
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'VERB_fileops',
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'VERB_hazard',
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'VERB_log',
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'VERB_lsm',
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'VERB_mutex',
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'VERB_overflow',
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'VERB_read',
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'VERB_reconcile',
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'VERB_recovery',
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'VERB_salvage',
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'VERB_shared_cache',
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'VERB_verify',
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'VERB_version',
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'VERB_write'
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],
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###################################################
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# Structure flag declarations
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###################################################
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'conn' : [
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'CONN_CACHE_POOL',
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'CONN_CKPT_SYNC',
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'CONN_EVICTION_RUN',
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'CONN_LSM_MERGE',
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'CONN_PANIC',
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'CONN_SERVER_RUN',
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],
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'session' : [
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'SESSION_INTERNAL',
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'SESSION_LOGGING_DISABLED',
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'SESSION_LOGGING_INMEM',
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'SESSION_NO_CACHE',
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'SESSION_NO_CACHE_CHECK',
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'SESSION_NO_SCHEMA_LOCK',
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'SESSION_SALVAGE_CORRUPT_OK',
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'SESSION_SCHEMA_LOCKED',
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],
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}
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flag_cnt = {} # Dictionary [flag] : [reference count]
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flag_name = {} # Dictionary [flag] : [name ...]
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name_mask = {} # Dictionary [name] : [used flag mask]
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# Step through the flags dictionary and build our local dictionaries.
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for method in flags.items():
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name_mask[method[0]] = 0x0
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for flag in method[1]:
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if flag == '__NONE__':
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continue
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if flag not in flag_cnt:
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flag_cnt[flag] = 1
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flag_name[flag] = []
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else:
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flag_cnt[flag] += 1
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flag_name[flag].append(method[0])
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# Create list of possible bit masks.
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bits = [2 ** i for i in range(0, 32)]
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# Walk the list of flags in reverse, sorted-by-reference count order. For
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# each flag, find a bit that's not currently in use by any method using the
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# flag.
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flag_bit = {} # Dictionary [flag] : [bit value]
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for f in sorted(flag_cnt.items(),\
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key = lambda k_v : (k_v[1], k_v[0]), reverse = True):
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mask = 0xffffffff
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for m in flag_name[f[0]]:
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mask &= ~name_mask[m]
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if mask == 0:
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print >>sys.stderr,\
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"flags.py: ran out of flags at " + m + " method",
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sys.exit(1)
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for b in bits:
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if mask & b:
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mask = b
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break
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flag_bit[f[0]] = mask
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for m in flag_name[f[0]]:
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name_mask[m] |= mask
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# Print out the flag masks in hex.
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# Assumes tab stops set to 8 characters.
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flag_info = ''
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for f in sorted(flag_cnt.items()):
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flag_info += "#define\tWT_%s%s%#010x\n" %\
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(f[0],\
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"\t" * max(1, 6 - int((len('WT_') + len(f[0])) / 8)),\
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flag_bit[f[0]])
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# Update the wiredtiger.in file with the flags information.
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tmp_file = '__tmp'
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tfile = open(tmp_file, 'w')
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skip = 0
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for line in open('../src/include/flags.h', 'r'):
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if skip:
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if line.count('flags section: END'):
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tfile.write('/*\n' + line)
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skip = 0
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else:
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tfile.write(line)
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if line.count('flags section: BEGIN'):
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skip = 1
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tfile.write(' */\n')
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tfile.write(flag_info)
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tfile.close()
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compare_srcfile(tmp_file, '../src/include/flags.h')
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