X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=ovsdb%2Fovsdb-idlc.in;h=6c33f07847ca17039cbf826cfacae3ecab2a292b;hb=c393047875e2c9dc76b2f19092fff6bbf69ec4f9;hp=c01034882dbfe9a21833dd65b71a6d4cfd0ac033;hpb=ce5a3e38dacd8042dd7c4de7be24aca9c2887103;p=openvswitch

diff --git a/ovsdb/ovsdb-idlc.in b/ovsdb/ovsdb-idlc.in
index c0103488..6c33f078 100755
--- a/ovsdb/ovsdb-idlc.in
+++ b/ovsdb/ovsdb-idlc.in
@@ -124,6 +124,7 @@ def printCIDLHeader(schemaFile):
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
+#include "ovsdb-data.h"
 #include "ovsdb-idl-provider.h"
 #include "uuid.h"''' % {'prefix': prefix.upper()}
 
@@ -174,6 +175,18 @@ struct %(s)s *%(s)s_insert(struct ovsdb_idl_txn *);
         for columnName, column in sorted(table.columns.iteritems()):
             print 'void %(s)s_verify_%(c)s(const struct %(s)s *);' % {'s': structName, 'c': columnName}
 
+        print """
+/* Functions for fetching columns as \"struct ovsdb_datum\"s.  (This is
+   rarely useful.  More often, it is easier to access columns by using
+   the members of %(s)s directly.) */""" % {'s': structName}
+        for columnName, column in sorted(table.columns.iteritems()):
+            if column.type.value:
+                valueParam = ', enum ovsdb_atomic_type value_type'
+            else:
+                valueParam = ''
+            print 'const struct ovsdb_datum *%(s)s_get_%(c)s(const struct %(s)s *, enum ovsdb_atomic_type key_type%(v)s);' % {
+                's': structName, 'c': columnName, 'v': valueParam}
+
         print
         for columnName, column in sorted(table.columns.iteritems()):
 
@@ -311,7 +324,7 @@ static void
                 print "%sif (!row->n_%s) {" % (indent, columnName)
                 print "%s    %s = xmalloc(%s * sizeof *%s);" % (indent, keyVar, nMax, keyVar)
                 if valueVar:
-                    print "%s    %s = xmalloc(%s * sizeof %s);" % (indent, valueVar, nMax, valueVar)
+                    print "%s    %s = xmalloc(%s * sizeof *%s);" % (indent, valueVar, nMax, valueVar)
                 print "%s}" % indent
                 print "%s%s[row->n_%s] = %s;" % (indent, keyVar, columnName, keySrc)
                 if valueVar:
@@ -398,6 +411,42 @@ void
         'c': columnName,
         'C': columnName.upper()}
 
+        # Get functions.
+        for columnName, column in sorted(table.columns.iteritems()):
+            if column.type.value:
+                valueParam = ',\n\tenum ovsdb_atomic_type value_type OVS_UNUSED'
+                valueType = '\n    assert(value_type == %s);' % column.type.value.toAtomicType()
+                valueComment = "\n * 'value_type' must be %s." % column.type.value.toAtomicType()
+            else:
+                valueParam = ''
+                valueType = ''
+                valueComment = ''
+            print """
+/* Returns the %(c)s column's value in 'row' as a struct ovsdb_datum.
+ * This is useful occasionally: for example, ovsdb_datum_find_key() is an
+ * easier and more efficient way to search for a given key than implementing
+ * the same operation on the "cooked" form in 'row'.
+ *
+ * 'key_type' must be %(kt)s.%(vc)s
+ * (This helps to avoid silent bugs if someone changes %(c)s's
+ * type without updating the caller.)
+ *
+ * The caller must not modify or free the returned value.
+ *
+ * Various kinds of changes can invalidate the returned value: modifying
+ * 'column' within 'row', deleting 'row', or completing an ongoing transaction.
+ * If the returned value is needed for a long time, it is best to make a copy
+ * of it with ovsdb_datum_clone(). */
+const struct ovsdb_datum *
+%(s)s_get_%(c)s(const struct %(s)s *row,
+\tenum ovsdb_atomic_type key_type OVS_UNUSED%(v)s)
+{
+    assert(key_type == %(kt)s);%(vt)s
+    return ovsdb_idl_read(&row->header_, &%(s)s_col_%(c)s);
+}""" % {'s': structName, 'c': columnName,
+       'kt': column.type.key.toAtomicType(),
+       'v': valueParam, 'vt': valueType, 'vc': valueComment}
+
         # Set functions.
         for columnName, column in sorted(table.columns.iteritems()):
             type = column.type
@@ -456,6 +505,12 @@ void
                 if type.value:
                     print "        " + type.value.copyCValue("datum.values[i].%s" % type.value.type, "%s[i]" % valueVar)
                 print "    }"
+                if type.value:
+                    valueType = type.value.toAtomicType()
+                else:
+                    valueType = "OVSDB_TYPE_VOID"
+                print "    ovsdb_datum_sort_unique(&datum, %s, %s);" % (
+                    type.key.toAtomicType(), valueType)
             print "    ovsdb_idl_txn_write(&row->header_, &%(s)s_columns[%(S)s_COL_%(C)s], &datum);" \
                 % {'s': structName,
                    'S': structName.upper(),