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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 53 |
1 files changed, 53 insertions, 0 deletions
@@ -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(), |