From c9a70962ecbf189644c9caf694192af2db7bdf29 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 6 Jan 2008 02:48:24 +0000 Subject: [PATCH] save memory in ipkg while parsing package lists - there's no need to load the whole files into ram before parsing them SVN-Revision: 10125 --- .../busybox/patches/524-memory_usage.patch | 249 ++++++++++++++++++ 1 file changed, 249 insertions(+) create mode 100644 package/busybox/patches/524-memory_usage.patch diff --git a/package/busybox/patches/524-memory_usage.patch b/package/busybox/patches/524-memory_usage.patch new file mode 100644 index 0000000000..8f009a5381 --- /dev/null +++ b/package/busybox/patches/524-memory_usage.patch @@ -0,0 +1,249 @@ +Index: busybox-1.8.2/archival/libipkg/pkg.c +=================================================================== +--- busybox-1.8.2.orig/archival/libipkg/pkg.c 2008-01-06 03:14:12.003658206 +0100 ++++ busybox-1.8.2/archival/libipkg/pkg.c 2008-01-06 03:24:18.187737063 +0100 +@@ -224,8 +224,7 @@ + if (err) { return err; } + + rewind(control_file); +- raw = read_raw_pkgs_from_stream(control_file); +- pkg_parse_raw(pkg, &raw, NULL, NULL); ++ pkg_parse_stream(pkg, control_file, NULL, NULL); + + fclose(control_file); + +Index: busybox-1.8.2/archival/libipkg/pkg_hash.c +=================================================================== +--- busybox-1.8.2.orig/archival/libipkg/pkg_hash.c 2008-01-06 03:14:12.231671203 +0100 ++++ busybox-1.8.2/archival/libipkg/pkg_hash.c 2008-01-06 03:28:38.218555373 +0100 +@@ -89,20 +89,20 @@ + pkg_src_t *src, pkg_dest_t *dest, int is_status_file) + { + hash_table_t *hash = &conf->pkg_hash; +- char **raw; +- char **raw_start; ++ FILE *fp; + pkg_t *pkg; + +- raw = raw_start = read_raw_pkgs_from_file(file_name); +- if (!raw) +- return -ENOMEM; ++ if(!(fp = fopen(file_name, "r"))){ ++ fprintf(stderr, "can't get %s open for read\n", file_name); ++ return NULL; ++ } + +- while(*raw){ /* don't worry, we'll increment raw in the parsing function */ ++ while(!feof(fp)) { /* don't worry, we'll increment raw in the parsing function */ + pkg = pkg_new(); + if (!pkg) + return -ENOMEM; + +- if (pkg_parse_raw(pkg, &raw, src, dest) == 0) { ++ if (pkg_parse_stream(pkg, fp, src, dest) == 0) { + if (!pkg->architecture) { + char *version_str = pkg_version_str_alloc(pkg); + pkg->architecture = pkg_get_default_arch(conf); +@@ -116,13 +116,6 @@ + } + } + +- /* XXX: CLEANUP: I'd like a cleaner interface for cleaning up +- memory after read_raw_pkgs_from_file */ +- raw = raw_start; +- while (*raw) { +- free(*raw++); +- } +- free(raw_start); + return 0; + } + +Index: busybox-1.8.2/archival/libipkg/pkg_parse.c +=================================================================== +--- busybox-1.8.2.orig/archival/libipkg/pkg_parse.c 2008-01-06 03:14:12.283674167 +0100 ++++ busybox-1.8.2/archival/libipkg/pkg_parse.c 2008-01-06 03:38:24.111943535 +0100 +@@ -227,6 +227,161 @@ + Enhances, perhaps we could generalize all of these and save some + code duplication. + */ ++int pkg_parse_stream(pkg_t *pkg, FILE *stream, pkg_src_t *src, pkg_dest_t *dest) ++{ ++ int reading_conffiles, reading_description; ++ int pkg_false_provides=1; ++ char ** lines; ++ char *provide=NULL; ++ char *buf, *scout; ++ int count = 0; ++ size_t size = 512; ++ ++ buf = malloc (size); ++ ++ pkg->src = src; ++ pkg->dest = dest; ++ ++ reading_conffiles = reading_description = 0; ++ ++ while (fgets(buf, size, stream)) { ++ while (strlen (buf) == (size - 1) ++ && buf[size-2] != '\n') { ++ size_t o = size - 1; ++ size *= 2; ++ buf = realloc (buf, size); ++ if (fgets (buf + o, size - o, stream) == NULL) ++ break; ++ } ++ ++ if((scout = strchr(buf, '\n'))) ++ *scout = '\0'; ++ ++ lines = &buf; ++ /* fprintf(stderr, "PARSING %s\n", *lines);*/ ++ if(isGenericFieldType("Package:", *lines)) ++ pkg->name = parseGenericFieldType("Package", *lines); ++ else if(isGenericFieldType("Architecture:", *lines)) ++ pkg->architecture = parseGenericFieldType("Architecture", *lines); ++ else if(isGenericFieldType("Filename:", *lines)) ++ pkg->filename = parseGenericFieldType("Filename", *lines); ++ else if(isGenericFieldType("Section:", *lines)) ++ pkg->section = parseGenericFieldType("Section", *lines); ++ else if(isGenericFieldType("MD5sum:", *lines)) ++ pkg->md5sum = parseGenericFieldType("MD5sum", *lines); ++ /* The old ipkg wrote out status files with the wrong case for MD5sum, ++ let's parse it either way */ ++ else if(isGenericFieldType("MD5Sum:", *lines)) ++ pkg->md5sum = parseGenericFieldType("MD5Sum", *lines); ++ else if(isGenericFieldType("Size:", *lines)) ++ pkg->size = parseGenericFieldType("Size", *lines); ++ else if(isGenericFieldType("Source:", *lines)) ++ pkg->source = parseGenericFieldType("Source", *lines); ++ else if(isGenericFieldType("Installed-Size:", *lines)) ++ pkg->installed_size = parseGenericFieldType("Installed-Size", *lines); ++ else if(isGenericFieldType("Installed-Time:", *lines)) { ++ char *time_str = parseGenericFieldType("Installed-Time", *lines); ++ pkg->installed_time = strtoul(time_str, NULL, 0); ++ } else if(isGenericFieldType("Priority:", *lines)) ++ pkg->priority = parseGenericFieldType("Priority", *lines); ++ else if(isGenericFieldType("Essential:", *lines)) { ++ char *essential_value; ++ essential_value = parseGenericFieldType("Essential", *lines); ++ if (strcmp(essential_value, "yes") == 0) { ++ pkg->essential = 1; ++ } ++ free(essential_value); ++ } ++ else if(isGenericFieldType("Status", *lines)) ++ parseStatus(pkg, *lines); ++ else if(isGenericFieldType("Version", *lines)) ++ parseVersion(pkg, *lines); ++ else if(isGenericFieldType("Maintainer", *lines)) ++ pkg->maintainer = parseGenericFieldType("Maintainer", *lines); ++ else if(isGenericFieldType("Conffiles", *lines)){ ++ parseConffiles(pkg, *lines); ++ reading_conffiles = 1; ++ } ++ else if(isGenericFieldType("Description", *lines)) { ++ pkg->description = parseGenericFieldType("Description", *lines); ++ reading_conffiles = 0; ++ reading_description = 1; ++ } ++ ++ else if(isGenericFieldType("Provides", *lines)){ ++/* Here we add the internal_use to align the off by one problem between provides_str and provides */ ++ provide = (char * ) malloc(strlen(*lines)+ 35 ); /* Preparing the space for the new ipkg_internal_use_only */ ++ if ( alterProvidesLine(*lines,provide) ){ ++ return EINVAL; ++ } ++ pkg->provides_str = parseDependsString( provide, &pkg->provides_count); ++/* Let's try to hack a bit here. ++ The idea is that if a package has no Provides, we would add one generic, to permit the check of dependencies ++ in alot of other places. We will remove it before writing down the status database */ ++ pkg_false_provides=0; ++ free(provide); ++ } ++ ++ else if(isGenericFieldType("Depends", *lines)) ++ pkg->depends_str = parseDependsString(*lines, &pkg->depends_count); ++ else if(isGenericFieldType("Pre-Depends", *lines)) ++ pkg->pre_depends_str = parseDependsString(*lines, &pkg->pre_depends_count); ++ else if(isGenericFieldType("Recommends", *lines)) ++ pkg->recommends_str = parseDependsString(*lines, &pkg->recommends_count); ++ else if(isGenericFieldType("Suggests", *lines)) ++ pkg->suggests_str = parseDependsString(*lines, &pkg->suggests_count); ++ /* Abhaya: support for conflicts */ ++ else if(isGenericFieldType("Conflicts", *lines)) ++ pkg->conflicts_str = parseDependsString(*lines, &pkg->conflicts_count); ++ else if(isGenericFieldType("Replaces", *lines)) ++ pkg->replaces_str = parseDependsString(*lines, &pkg->replaces_count); ++ else if(line_is_blank(*lines)) { ++ break; ++ } ++ else if(**lines == ' '){ ++ if(reading_description) { ++ /* we already know it's not blank, so the rest of description */ ++ pkg->description = realloc(pkg->description, ++ strlen(pkg->description) ++ + 1 + strlen(*lines) + 1); ++ strcat(pkg->description, "\n"); ++ strcat(pkg->description, (*lines)); ++ } ++ else if(reading_conffiles) ++ parseConffiles(pkg, *lines); ++ } ++ } ++/* If the ipk has not a Provides line, we insert our false line */ ++ if ( pkg_false_provides==1) ++ pkg->provides_str = parseDependsString ((char *)"Provides: ipkg_internal_use_only ", &pkg->provides_count); ++ ++ free(buf); ++ if (pkg->name) { ++ return 0; ++ } else { ++ return EINVAL; ++ } ++} ++ ++#if 0 ++ ++/* Some random thoughts from Carl: ++ ++ This function could be considerably simplified if we just kept ++ an array of all the generic string-valued field names, and looped ++ through those looking for a match. Also, these fields could perhaps ++ be stored in the package as an array as well, (or, probably better, ++ as an nv_pair_list_t). ++ ++ Fields which require special parsing or storage, (such as Depends: ++ and Status:) could be handled as they are now. ++*/ ++/* XXX: FEATURE: The Suggests: field needs to be changed from a string ++ to a dependency list. And, since we already have ++ Depends/Pre-Depends and need to add Conflicts, Recommends, and ++ Enhances, perhaps we could generalize all of these and save some ++ code duplication. ++*/ + int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest) + { + int reading_conffiles, reading_description; +@@ -345,6 +500,7 @@ + return EINVAL; + } + } ++#endif + + int pkg_valorize_other_field(pkg_t *pkg, char ***raw) + { +Index: busybox-1.8.2/archival/libipkg/pkg_parse.h +=================================================================== +--- busybox-1.8.2.orig/archival/libipkg/pkg_parse.h 2008-01-06 03:14:12.303675307 +0100 ++++ busybox-1.8.2/archival/libipkg/pkg_parse.h 2008-01-06 03:39:03.954214018 +0100 +@@ -25,7 +25,10 @@ + char ** parseDependsString(char * raw, int * depends_count); + int parseVersion(pkg_t *pkg, char *raw); + void parseConffiles(pkg_t * pkg, char * raw); ++#if 0 + int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest); ++#endif ++int pkg_parse_stream(pkg_t *pkg, FILE *stream, pkg_src_t *src, pkg_dest_t *dest); + int pkg_valorize_other_field(pkg_t *pkg, char ***raw); + + #endif -- 2.25.1