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Queue#push: DB_APPEND isn't easy to understand

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This commit is contained in:
Denis Knauf 2010-02-23 01:34:44 +01:00
parent 7a27046ebb
commit a6f8fd9825
1 changed files with 37 additions and 27 deletions
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64
ext/bdb.c
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@ -32,6 +32,23 @@ VALUE eDbError;
static ID fv_call,fv_uniq,fv_err_new,fv_err_code,fv_err_msg;
#define EXCEPTIONS_CREATE \
eDbE_create(BUFFER_SMALL, BufferSmall)\
eDbE_create(LOCK_DEADLOCK, LockDeadlock)\
eDbE_create(LOCK_NOTGRANTED, LockNotgranted)\
eDbE_create(REP_HANDLE_DEAD, RepHandleDead)\
eDbE_create(REP_LEASE_EXPIRED, RepLeaseExpired)\
eDbE_create(REP_LOCKOUT, RepLockout)\
eDbE_create(SECONDARY_BAD, SecondaryBad) \
eDbE_create(FOREIGN_CONFLICT, ForeignConflict) \
eDbE_create(OLD_VERSION, OldVersion) \
eDbE_create(KEYEXIST, KeyExist) \
eDbE_create(RUNRECOVERY, RunRecovery) \
eDbE_create(VERSION_MISMATCH, VersionMismatch)
#define eDbE_create(n,c) VALUE eDbE_##c;
EXCEPTIONS_CREATE
/*
* Document-class: Bdb::DbError
*
@ -63,15 +80,9 @@ raise_error(int code, const char *fmt, ...)
argv[1]=INT2NUM(code);
VALUE cl;
switch( code) {
#define eDbE_create(n) case DB_##n: cl = eDbE_##n; break;
eDbE_create(BUFFER_SMALL)
eDbE_create(LOCK_DEADLOCK)
eDbE_create(LOCK_NOTGRANTED)
eDbE_create(REP_HANDLE_DEAD)
eDbE_create(REP_LEASE_EXPIRED)
eDbE_create(REP_LOCKOUT)
eDbE_create(SECONDARY_BAD)
default: cl = eDbError
#define eDbE_create(n,c) case DB_##n: cl = eDbE_##c; break;
EXCEPTIONS_CREATE
default: cl = eDbError; break;
}
exc=rb_class_new_instance(2,argv,cl);
@ -571,17 +582,17 @@ VALUE db_put(VALUE obj, VALUE vtxn, VALUE vkey, VALUE vdata, VALUE vflags)
if (!dbh->db)
raise_error(0,"db is closed");
if ( ! NIL_P(vkey) ) {
key.data = RSTRING_PTR(vkey);
key.size = RSTRING_LEN(vkey);
key.flags = LMEMFLAG;
}
key.data = RSTRING_PTR(vkey);
key.size = RSTRING_LEN(vkey);
key.flags = LMEMFLAG;
StringValue(vdata);
data.data = RSTRING_PTR(vdata);
data.size = RSTRING_LEN(vdata);
data.flags = LMEMFLAG;
fprintf( stderr, "## key: \"%*s\" (%u) [%p], data: \"%*s\" (%u) [%p], flags: %u ##\n",
key.size, key.data, key.size, key, data.size, data.data, data.size, data, flags);
rv = dbh->db->put(dbh->db,txn?txn->txn:NULL,&key,&data,flags);
/*
if (rv == DB_KEYEXIST)
@ -591,10 +602,9 @@ VALUE db_put(VALUE obj, VALUE vtxn, VALUE vkey, VALUE vdata, VALUE vflags)
raise_error(rv, "db_put fails: %s",db_strerror(rv));
}
// For example for DB_APPEND
if ( NIL_P(vkey) ) {
VALUE str = rb_str_new(data.data,data.size);
if (data.data) free(data.data);
if ( flags & DB_APPEND == DB_APPEND ) {
VALUE str = rb_str_new(key.data,key.size);
if (key.data) free(key.data);
return str;
}
@ -3140,15 +3150,15 @@ void Init_bdb() {
cDb = rb_define_class_under(mBdb,"Db", rb_cObject);
eDbError = rb_define_class_under(mBdb,"DbError",rb_eStandardError);
#define eDbE_cl_create(n,c) eDbE_##n = rb_define_class_under(mBdb, #c, DbError);
eDbE_cl_create(BUFFER_SMALL, BufferSmall)
eDbE_cl_create(LOCK_DEADLOCK, LockDeadlock)
eDbE_cl_create(LOCK_NOTGRANTED, LockNotgranted)
eDbE_cl_create(REP_HANDLE_DEAD, RepHandleDead)
eDbE_cl_create(REP_LEASE_EXPIRED, RepLeaseExpired)
eDbE_cl_create(REP_LOCKOUT, RepLockout)
eDbE_cl_create(SECONDARY_BAD, SecondaryBad)
eDbErrorKeyEmpty = rb_define_class_under(mBdb,"KeyEmpty",eDbError);
#define eDbE_create(n,c) eDbE_##c = rb_define_class_under(mBdb, #c, eDbError);
eDbE_create(BUFFER_SMALL, BufferSmall);
eDbE_create(LOCK_DEADLOCK, LockDeadlock);
eDbE_create(LOCK_NOTGRANTED, LockNotgranted);
eDbE_create(REP_HANDLE_DEAD, RepHandleDead);
eDbE_create(REP_LEASE_EXPIRED, RepLeaseExpired);
eDbE_create(REP_LOCKOUT, RepLockout);
eDbE_create(SECONDARY_BAD, SecondaryBad);
rb_define_method(eDbError,"initialize",err_initialize,2);
rb_define_method(eDbError,"code",err_code,0);