summaryrefslogtreecommitdiff
path: root/ChangeLog
diff options
context:
space:
mode:
Diffstat (limited to 'ChangeLog')
-rw-r--r--ChangeLog53
1 files changed, 53 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 03f9145..12bf933 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,56 @@
+2009-09-23 Paul <psmith@gnu.org>
+
+ Rework the way secondary expansion is stored, for efficiency.
+ This changes secondary expansion so that ONLY WHEN we know we have
+ a possibility of needing secondary expansion, do we defer the
+ secondary expansion. This means more parsing the deps but we use
+ a lot less memory (due to the strcache). Also, this fixes
+ Savannah bug #18622.
+
+ * read.c (eval): Don't parse the dep string here anymore.
+ (record_files): Take the dep argument as an unparsed string. If
+ secondary expansion is enabled AND the prereq string has a '$' in
+ it, then set NEED_2ND_EXPANSION and keep the entire string.
+ Otherwise, parse the dep string here to construct the dep list
+ with the names in the strcache.
+
+ * misc.c (copy_dep_chain): For NEED_2ND_EXPANSION, we need to
+ duplicate the name string (others are in the strcache).
+
+ * implicit.c: Remove struct idep and free_idep_chain(): unused.
+ (struct patdeps): New structure to store prereq information.
+ (pattern_search): Use the NEED_2ND_EXPANSION flag to determine
+ which prerequisites need expansion, and expand only those.
+
+ * file.c (split_prereqs): Break parse_prereqs() into two parts: this
+ and enter_prereqs(). split_prereqs() takes a fully-expanded string
+ and splits it into a DEP list, handling order-only prereqs.
+ (enter_prereqs): This function enters a list of DEPs into the file
+ database. If there's a stem defined, expand any pattern chars.
+ (expand_deps): Only try to expand DEPs which have NEED_2ND_EXPANSION
+ set. Use the above functions.
+ (snap_deps): Only perform second expansion on prereqs that need it,
+ as defined by the NEED_2ND_EXPANSION flag.
+ (print_prereqs): New function to print the prereqs
+ (print_file): Call print_prereqs() rather than print inline.
+
+ * hash.h (STRING_COMPARE): Take advantage of strcache() by
+ comparing pointers.
+ (STRING_N_COMPARE): Ditto.
+ (ISTRING_COMPARE): Ditto.
+
+ * dep.h (PARSE_FILE_SEQ): New macro to reduce casts.
+ (parse_file_seq): Return void*
+ * read.c (parse_file_seq): Return void*.
+ (eval): Invoke macroized version of parse_file_seq()
+ * default.c (set_default_suffixes): Ditto.
+ * file.c (split_prereqs): Ditto.
+ * function.c (string_glob): Ditto.
+ * main.c (main): Ditto.
+ * rule.c (install_pattern_rule): Ditto.
+
+ * filedef.h: Add split_prereqs(), enter_prereqs(), etc.
+
2009-09-16 Paul Smith <psmith@gnu.org>
* misc.c (alloc_dep, free_dep): Now that we have xcalloc(),