diff options
| -rw-r--r-- | alloc.c | 23 | ||||
| -rw-r--r-- | builtin/blame.c | 22 | ||||
| -rw-r--r-- | builtin/commit-tree.c | 4 | ||||
| -rw-r--r-- | builtin/commit.c | 4 | ||||
| -rw-r--r-- | builtin/fast-export.c | 5 | ||||
| -rw-r--r-- | builtin/fmt-merge-msg.c | 5 | ||||
| -rw-r--r-- | builtin/fsck.c | 3 | ||||
| -rw-r--r-- | builtin/index-pack.c | 3 | ||||
| -rw-r--r-- | builtin/log.c | 13 | ||||
| -rw-r--r-- | builtin/merge.c | 8 | ||||
| -rw-r--r-- | builtin/reset.c | 4 | ||||
| -rw-r--r-- | builtin/rev-list.c | 5 | ||||
| -rw-r--r-- | commit-slab.h | 12 | ||||
| -rw-r--r-- | commit.c | 129 | ||||
| -rw-r--r-- | commit.h | 54 | ||||
| -rw-r--r-- | fsck.c | 13 | ||||
| -rw-r--r-- | log-tree.c | 4 | ||||
| -rw-r--r-- | merge-recursive.c | 6 | ||||
| -rw-r--r-- | notes-cache.c | 6 | ||||
| -rw-r--r-- | notes-merge.c | 13 | ||||
| -rw-r--r-- | notes-utils.c | 7 | ||||
| -rw-r--r-- | notes-utils.h | 2 | ||||
| -rw-r--r-- | object.c | 4 | ||||
| -rw-r--r-- | pretty.c | 50 | ||||
| -rw-r--r-- | revision.c | 15 | ||||
| -rw-r--r-- | sequencer.c | 49 | ||||
| -rw-r--r-- | sha1_name.c | 18 |
27 files changed, 284 insertions, 197 deletions
@@ -47,23 +47,32 @@ union any_object { DEFINE_ALLOCATOR(blob, struct blob) DEFINE_ALLOCATOR(tree, struct tree) -DEFINE_ALLOCATOR(commit, struct commit) +DEFINE_ALLOCATOR(raw_commit, struct commit) DEFINE_ALLOCATOR(tag, struct tag) DEFINE_ALLOCATOR(object, union any_object) +void *alloc_commit_node(void) +{ + static int commit_count; + struct commit *c = alloc_raw_commit_node(); + c->index = commit_count++; + return c; +} + static void report(const char *name, unsigned int count, size_t size) { fprintf(stderr, "%10s: %8u (%"PRIuMAX" kB)\n", name, count, (uintmax_t) size); } -#define REPORT(name) \ - report(#name, name##_allocs, name##_allocs * sizeof(struct name) >> 10) +#define REPORT(name, type) \ + report(#name, name##_allocs, name##_allocs * sizeof(type) >> 10) void alloc_report(void) { - REPORT(blob); - REPORT(tree); - REPORT(commit); - REPORT(tag); + REPORT(blob, struct blob); + REPORT(tree, struct tree); + REPORT(raw_commit, struct commit); + REPORT(tag, struct tag); + REPORT(object, union any_object); } diff --git a/builtin/blame.c b/builtin/blame.c index 662e3fec44..d3b256e545 100644 --- a/builtin/blame.c +++ b/builtin/blame.c @@ -1655,7 +1655,7 @@ static void get_commit_info(struct commit *commit, { int len; const char *subject, *encoding; - char *message; + const char *message; commit_info_init(ret); @@ -1666,7 +1666,7 @@ static void get_commit_info(struct commit *commit, &ret->author_time, &ret->author_tz); if (!detailed) { - logmsg_free(message, commit); + unuse_commit_buffer(commit, message); return; } @@ -1680,7 +1680,7 @@ static void get_commit_info(struct commit *commit, else strbuf_addf(&ret->summary, "(%s)", sha1_to_hex(commit->object.sha1)); - logmsg_free(message, commit); + unuse_commit_buffer(commit, message); } /* @@ -2252,6 +2252,18 @@ static void append_merge_parents(struct commit_list **tail) } /* + * This isn't as simple as passing sb->buf and sb->len, because we + * want to transfer ownership of the buffer to the commit (so we + * must use detach). + */ +static void set_commit_buffer_from_strbuf(struct commit *c, struct strbuf *sb) +{ + size_t len; + void *buf = strbuf_detach(sb, &len); + set_commit_buffer(c, buf, len); +} + +/* * Prepare a dummy commit that represents the work tree (or staged) item. * Note that annotating work tree item never works in the reverse. */ @@ -2272,7 +2284,7 @@ static struct commit *fake_working_tree_commit(struct diff_options *opt, struct strbuf msg = STRBUF_INIT; time(&now); - commit = xcalloc(1, sizeof(*commit)); + commit = alloc_commit_node(); commit->object.parsed = 1; commit->date = now; commit->object.type = OBJ_COMMIT; @@ -2299,7 +2311,7 @@ static struct commit *fake_working_tree_commit(struct diff_options *opt, ident, ident, path, (!contents_from ? path : (!strcmp(contents_from, "-") ? "standard input" : contents_from))); - commit->buffer = strbuf_detach(&msg, NULL); + set_commit_buffer_from_strbuf(commit, &msg); if (!contents_from || strcmp("-", contents_from)) { struct stat st; diff --git a/builtin/commit-tree.c b/builtin/commit-tree.c index 987a4c3d73..8a66c74e0f 100644 --- a/builtin/commit-tree.c +++ b/builtin/commit-tree.c @@ -123,8 +123,8 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix) die_errno("git commit-tree: failed to read"); } - if (commit_tree(&buffer, tree_sha1, parents, commit_sha1, - NULL, sign_commit)) { + if (commit_tree(buffer.buf, buffer.len, tree_sha1, parents, + commit_sha1, NULL, sign_commit)) { strbuf_release(&buffer); return 1; } diff --git a/builtin/commit.c b/builtin/commit.c index 5e2221c8e8..84cec9a715 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -1745,8 +1745,8 @@ int cmd_commit(int argc, const char **argv, const char *prefix) append_merge_tag_headers(parents, &tail); } - if (commit_tree_extended(&sb, active_cache_tree->sha1, parents, sha1, - author_ident.buf, sign_commit, extra)) { + if (commit_tree_extended(sb.buf, sb.len, active_cache_tree->sha1, + parents, sha1, author_ident.buf, sign_commit, extra)) { rollback_index_files(); die(_("failed to write commit object")); } diff --git a/builtin/fast-export.c b/builtin/fast-export.c index ef4481615f..92b4624a4b 100644 --- a/builtin/fast-export.c +++ b/builtin/fast-export.c @@ -282,6 +282,7 @@ static const char *find_encoding(const char *begin, const char *end) static void handle_commit(struct commit *commit, struct rev_info *rev) { int saved_output_format = rev->diffopt.output_format; + const char *commit_buffer; const char *author, *author_end, *committer, *committer_end; const char *encoding, *message; char *reencoded = NULL; @@ -291,7 +292,8 @@ static void handle_commit(struct commit *commit, struct rev_info *rev) rev->diffopt.output_format = DIFF_FORMAT_CALLBACK; parse_commit_or_die(commit); - author = strstr(commit->buffer, "\nauthor "); + commit_buffer = get_commit_buffer(commit, NULL); + author = strstr(commit_buffer, "\nauthor "); if (!author) die ("Could not find author in commit %s", sha1_to_hex(commit->object.sha1)); @@ -338,6 +340,7 @@ static void handle_commit(struct commit *commit, struct rev_info *rev) ? strlen(message) : 0), reencoded ? reencoded : message ? message : ""); free(reencoded); + unuse_commit_buffer(commit, commit_buffer); for (i = 0, p = commit->parents; p; p = p->next) { int mark = get_object_mark(&p->item->object); diff --git a/builtin/fmt-merge-msg.c b/builtin/fmt-merge-msg.c index 3906eda877..ef8b254ef2 100644 --- a/builtin/fmt-merge-msg.c +++ b/builtin/fmt-merge-msg.c @@ -230,12 +230,14 @@ static void add_branch_desc(struct strbuf *out, const char *name) static void record_person(int which, struct string_list *people, struct commit *commit) { + const char *buffer; char *name_buf, *name, *name_end; struct string_list_item *elem; const char *field; field = (which == 'a') ? "\nauthor " : "\ncommitter "; - name = strstr(commit->buffer, field); + buffer = get_commit_buffer(commit, NULL); + name = strstr(buffer, field); if (!name) return; name += strlen(field); @@ -247,6 +249,7 @@ static void record_person(int which, struct string_list *people, if (name_end < name) return; name_buf = xmemdupz(name, name_end - name + 1); + unuse_commit_buffer(commit, buffer); elem = string_list_lookup(people, name_buf); if (!elem) { diff --git a/builtin/fsck.c b/builtin/fsck.c index fc150c8821..8aadca160e 100644 --- a/builtin/fsck.c +++ b/builtin/fsck.c @@ -310,8 +310,7 @@ static int fsck_obj(struct object *obj) if (obj->type == OBJ_COMMIT) { struct commit *commit = (struct commit *) obj; - free(commit->buffer); - commit->buffer = NULL; + free_commit_buffer(commit); if (!commit->parents && show_root) printf("root %s\n", sha1_to_hex(commit->object.sha1)); diff --git a/builtin/index-pack.c b/builtin/index-pack.c index 18f57de58b..8b3bd29dbc 100644 --- a/builtin/index-pack.c +++ b/builtin/index-pack.c @@ -786,7 +786,8 @@ static void sha1_object(const void *data, struct object_entry *obj_entry, } if (obj->type == OBJ_COMMIT) { struct commit *commit = (struct commit *) obj; - commit->buffer = NULL; + if (detach_commit_buffer(commit, NULL) != data) + die("BUG: parse_object_buffer transmogrified our buffer"); } obj->flags |= FLAG_CHECKED; } diff --git a/builtin/log.c b/builtin/log.c index a7ba211731..92063dfc48 100644 --- a/builtin/log.c +++ b/builtin/log.c @@ -347,8 +347,7 @@ static int cmd_log_walk(struct rev_info *rev) rev->max_count++; if (!rev->reflog_info) { /* we allow cycles in reflog ancestry */ - free(commit->buffer); - commit->buffer = NULL; + free_commit_buffer(commit); } free_commit_list(commit->parents); commit->parents = NULL; @@ -925,9 +924,12 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout, log_write_email_headers(rev, head, &pp.subject, &pp.after_subject, &need_8bit_cte); - for (i = 0; !need_8bit_cte && i < nr; i++) - if (has_non_ascii(list[i]->buffer)) + for (i = 0; !need_8bit_cte && i < nr; i++) { + const char *buf = get_commit_buffer(list[i], NULL); + if (has_non_ascii(buf)) need_8bit_cte = 1; + unuse_commit_buffer(list[i], buf); + } if (!branch_name) branch_name = find_branch_name(rev); @@ -1528,8 +1530,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) reopen_stdout(rev.numbered_files ? NULL : commit, NULL, &rev, quiet)) die(_("Failed to create output files")); shown = log_tree_commit(&rev, commit); - free(commit->buffer); - commit->buffer = NULL; + free_commit_buffer(commit); /* We put one extra blank line between formatted * patches and this flag is used by log-tree code diff --git a/builtin/merge.c b/builtin/merge.c index 428ca247bd..b49c310866 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -852,8 +852,8 @@ static int merge_trivial(struct commit *head, struct commit_list *remoteheads) parent->next->item = remoteheads->item; parent->next->next = NULL; prepare_to_commit(remoteheads); - if (commit_tree(&merge_msg, result_tree, parent, result_commit, NULL, - sign_commit)) + if (commit_tree(merge_msg.buf, merge_msg.len, result_tree, parent, + result_commit, NULL, sign_commit)) die(_("failed to write commit object")); finish(head, remoteheads, result_commit, "In-index merge"); drop_save(); @@ -877,8 +877,8 @@ static int finish_automerge(struct commit *head, commit_list_insert(head, &parents); strbuf_addch(&merge_msg, '\n'); prepare_to_commit(remoteheads); - if (commit_tree(&merge_msg, result_tree, parents, result_commit, - NULL, sign_commit)) + if (commit_tree(merge_msg.buf, merge_msg.len, result_tree, parents, + result_commit, NULL, sign_commit)) die(_("failed to write commit object")); strbuf_addf(&buf, "Merge made by the '%s' strategy.", wt_strategy); finish(head, remoteheads, result_commit, buf.buf); diff --git a/builtin/reset.c b/builtin/reset.c index f368266762..850d53229a 100644 --- a/builtin/reset.c +++ b/builtin/reset.c @@ -93,7 +93,7 @@ static int reset_index(const unsigned char *sha1, int reset_type, int quiet) static void print_new_head_line(struct commit *commit) { const char *hex, *body; - char *msg; + const char *msg; hex = find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV); printf(_("HEAD is now at %s"), hex); @@ -109,7 +109,7 @@ static void print_new_head_line(struct commit *commit) } else printf("\n"); - logmsg_free(msg, commit); + unuse_commit_buffer(commit, msg); } static void update_index_from_diff(struct diff_queue_struct *q, diff --git a/builtin/rev-list.c b/builtin/rev-list.c index 9f92905379..ff84a825ff 100644 --- a/builtin/rev-list.c +++ b/builtin/rev-list.c @@ -106,7 +106,7 @@ static void show_commit(struct commit *commit, void *data) else putchar('\n'); - if (revs->verbose_header && commit->buffer) { + if (revs->verbose_header && get_cached_commit_buffer(commit, NULL)) { struct strbuf buf = STRBUF_INIT; struct pretty_print_context ctx = {0}; ctx.abbrev = revs->abbrev; @@ -173,8 +173,7 @@ static void finish_commit(struct commit *commit, void *data) free_commit_list(commit->parents); commit->parents = NULL; } - free(commit->buffer); - commit->buffer = NULL; + free_commit_buffer(commit); } static void finish_object(struct object *obj, diff --git a/commit-slab.h b/commit-slab.h index cc114b53b0..375c9c751a 100644 --- a/commit-slab.h +++ b/commit-slab.h @@ -117,4 +117,16 @@ static int stat_ ##slabname## realloc * catch because GCC silently parses it by default. */ +/* + * Statically initialize a commit slab named "var". Note that this + * evaluates "stride" multiple times! Example: + * + * struct indegree indegrees = COMMIT_SLAB_INIT(1, indegrees); + * + */ +#define COMMIT_SLAB_INIT(stride, var) { \ + COMMIT_SLAB_SIZE / sizeof(**((var).slab)) / (stride), \ + (stride), 0, NULL \ +} + #endif /* COMMIT_SLAB_H */ @@ -17,7 +17,6 @@ static struct commit_extra_header *read_commit_extra_header_lines(const char *bu int save_commit_buffer = 1; const char *commit_type = "commit"; -static int commit_count; static struct commit *check_commit(struct object *obj, const unsigned char *sha1, @@ -64,7 +63,6 @@ struct commit *lookup_commit(const unsigned char *sha1) struct object *obj = lookup_object(sha1); if (!obj) { struct commit *c = alloc_commit_node(); - c->index = commit_count++; return create_object(sha1, OBJ_COMMIT, c); } if (!obj->type) @@ -247,6 +245,76 @@ int unregister_shallow(const unsigned char *sha1) return 0; } +struct commit_buffer { + void *buffer; + unsigned long size; +}; +define_commit_slab(buffer_slab, struct commit_buffer); +static struct buffer_slab buffer_slab = COMMIT_SLAB_INIT(1, buffer_slab); + +void set_commit_buffer(struct commit *commit, void *buffer, unsigned long size) +{ + struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit); + v->buffer = buffer; + v->size = size; +} + +const void *get_cached_commit_buffer(const struct commit *commit, unsigned long *sizep) +{ + struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit); + if (sizep) + *sizep = v->size; + return v->buffer; +} + +const void *get_commit_buffer(const struct commit *commit, unsigned long *sizep) +{ + const void *ret = get_cached_commit_buffer(commit, sizep); + if (!ret) { + enum object_type type; + unsigned long size; + ret = read_sha1_file(commit->object.sha1, &type, &size); + if (!ret) + die("cannot read commit object %s", + sha1_to_hex(commit->object.sha1)); + if (type != OBJ_COMMIT) + die("expected commit for %s, got %s", + sha1_to_hex(commit->object.sha1), typename(type)); + if (sizep) + *sizep = size; + } + return ret; +} + +void unuse_commit_buffer(const struct commit *commit, const void *buffer) +{ + struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit); + if (v->buffer != buffer) + free((void *)buffer); +} + +void free_commit_buffer(struct commit *commit) +{ + struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit); + free(v->buffer); + v->buffer = NULL; + v->size = 0; +} + +const void *detach_commit_buffer(struct commit *commit, unsigned long *sizep) +{ + struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit); + void *ret; + + ret = v->buffer; + if (sizep) + *sizep = v->size; + + v->buffer = NULL; + v->size = 0; + return ret; +} + int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long size) { const char *tail = buffer; @@ -324,7 +392,7 @@ int parse_commit(struct commit *item) } ret = parse_commit_buffer(item, buffer, size); if (save_commit_buffer && !ret) { - item->buffer = buffer; + set_commit_buffer(item, buffer, size); return 0; } free(buffer); @@ -539,22 +607,12 @@ static void record_author_date(struct author_date_slab *author_date, struct commit *commit) { const char *buf, *line_end, *ident_line; - char *buffer = NULL; + const char *buffer = get_commit_buffer(commit, NULL); struct ident_split ident; char *date_end; unsigned long date; - if (!commit->buffer) { - unsigned long size; - enum object_type type; - buffer = read_sha1_file(commit->object.sha1, &type, &size); - if (!buffer) - return; - } - - for (buf = commit->buffer ? commit->buffer : buffer; - buf; - buf = line_end + 1) { + for (buf = buffer; buf; buf = line_end + 1) { line_end = strchrnul(buf, '\n'); ident_line = skip_prefix(buf, "author "); if (!ident_line) { @@ -575,7 +633,7 @@ static void record_author_date(struct author_date_slab *author_date, *(author_date_slab_at(author_date, commit)) = date; fail_exit: - free(buffer); + unuse_commit_buffer(commit, buffer); } static int compare_commits_by_author_date(const void *a_, const void *b_, @@ -1080,17 +1138,14 @@ static int do_sign_commit(struct strbuf *buf, const char *keyid) return 0; } -int parse_signed_commit(const unsigned char *sha1, +int parse_signed_commit(const struct commit *commit, struct strbuf *payload, struct strbuf *signature) { + unsigned long size; - enum object_type type; - char *buffer = read_sha1_file(sha1, &type, &size); + const char *buffer = get_commit_buffer(commit, &size); int in_signature, saw_signature = -1; - char *line, *tail; - - if (!buffer || type != OBJ_COMMIT) - goto cleanup; + const char *line, *tail; line = buffer; tail = buffer + size; @@ -1098,7 +1153,7 @@ int parse_signed_commit(const unsigned char *sha1, saw_signature = 0; while (line < tail) { const char *sig = NULL; - char *next = memchr(line, '\n', tail - line); + const char *next = memchr(line, '\n', tail - line); next = next ? next + 1 : tail; if (in_signature && line[0] == ' ') @@ -1119,8 +1174,7 @@ int parse_signed_commit(const unsigned char *sha1, } line = next; } - cleanup: - free(buffer); + unuse_commit_buffer(commit, buffer); return saw_signature; } @@ -1211,8 +1265,7 @@ void check_commit_signature(const struct commit* commit, struct signature_check sigc->result = 'N'; - if (parse_signed_commit(commit->object.sha1, - &payload, &signature) <= 0) + if (parse_signed_commit(commit, &payload, &signature) <= 0) goto out; status = verify_signed_buffer(payload.buf, payload.len, signature.buf, signature.len, @@ -1257,11 +1310,9 @@ struct commit_extra_header *read_commit_extra_headers(struct commit *commit, { struct commit_extra_header *extra = NULL; unsigned long size; - enum object_type type; - char *buffer = read_sha1_file(commit->object.sha1, &type, &size); - if (buffer && type == OBJ_COMMIT) - extra = read_commit_extra_header_lines(buffer, size, exclude); - free(buffer); + const char *buffer = get_commit_buffer(commit, &size); + extra = read_commit_extra_header_lines(buffer, size, exclude); + unuse_commit_buffer(commit, buffer); return extra; } @@ -1344,7 +1395,8 @@ void free_commit_extra_headers(struct commit_extra_header *extra) } } -int commit_tree(const struct strbuf *msg, const unsigned char *tree, +int commit_tree(const char *msg, size_t msg_len, + const unsigned char *tree, struct commit_list *parents, unsigned char *ret, const char *author, const char *sign_commit) { @@ -1352,7 +1404,7 @@ int commit_tree(const struct strbuf *msg, const unsigned char *tree, int result; append_merge_tag_headers(parents, &tail); - result = commit_tree_extended(msg, tree, parents, ret, + result = commit_tree_extended(msg, msg_len, tree, parents, ret, author, sign_commit, extra); free_commit_extra_headers(extra); return result; @@ -1473,7 +1525,8 @@ static const char commit_utf8_warn[] = "You may want to amend it after fixing the message, or set the config\n" "variable i18n.commitencoding to the encoding your project uses.\n"; -int commit_tree_extended(const struct strbuf *msg, const unsigned char *tree, +int commit_tree_extended(const char *msg, size_t msg_len, + const unsigned char *tree, struct commit_list *parents, unsigned char *ret, const char *author, const char *sign_commit, struct commit_extra_header *extra) @@ -1484,7 +1537,7 @@ int commit_tree_extended(const struct strbuf *msg, const unsigned char *tree, assert_sha1_type(tree, OBJ_TREE); - if (memchr(msg->buf, '\0', msg->len)) + if (memchr(msg, '\0', msg_len)) return error("a NUL byte in commit log message not allowed."); /* Not having i18n.commitencoding is the same as having utf-8 */ @@ -1523,7 +1576,7 @@ int commit_tree_extended(const struct strbuf *msg, const unsigned char *tree, strbuf_addch(&buffer, '\n'); /* And add the comment */ - strbuf_addbuf(&buffer, msg); + strbuf_add(&buffer, msg, msg_len); /* And check the encoding */ if (encoding_is_utf8 && !verify_utf8(&buffer)) @@ -20,7 +20,6 @@ struct commit { unsigned long date; struct commit_list *parents; struct tree *tree; - char *buffer; }; extern int save_commit_buffer; @@ -51,6 +50,44 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s int parse_commit(struct commit *item); void parse_commit_or_die(struct commit *item); +/* + * Associate an object buffer with the commit. The ownership of the + * memory is handed over to the commit, and must be free()-able. + */ +void set_commit_buffer(struct commit *, void *buffer, unsigned long size); + +/* + * Get any cached object buffer associated with the commit. Returns NULL + * if none. The resulting memory should not be freed. + */ +const void *get_cached_commit_buffer(const struct commit *, unsigned long *size); + +/* + * Get the commit's object contents, either from cache or by reading the object + * from disk. The resulting memory should not be modified, and must be given + * to unuse_commit_buffer when the caller is done. + */ +const void *get_commit_buffer(const struct commit *, unsigned long *size); + +/* + * Tell the commit subsytem that we are done with a particular commit buffer. + * The commit and buffer should be the input and return value, respectively, + * from an earlier call to get_commit_buffer. The buffer may or may not be + * freed by this call; callers should not access the memory afterwards. + */ +void unuse_commit_buffer(const struct commit *, const void *buffer); + +/* + * Free any cached object buffer associated with the commit. + */ +void free_commit_buffer(struct commit *); + +/* + * Disassociate any cached object buffer from the commit, but do not free it. + * The buffer (or NULL, if none) is returned. + */ +const void *detach_commit_buffer(struct commit *, unsigned long *sizep); + /* Find beginning and length of commit subject. */ int find_commit_subject(const char *commit_buffer, const char **subject); @@ -115,10 +152,9 @@ struct userformat_want { extern int has_non_ascii(const char *text); struct rev_info; /* in revision.h, it circularly uses enum cmit_fmt */ -extern char *logmsg_reencode(const struct commit *commit, - char **commit_encoding, - const char *output_encoding); -extern void logmsg_free(char *msg, const struct commit *commit); +extern const char *logmsg_reencode(const struct commit *commit, + char **commit_encoding, + const char *output_encoding); extern void get_commit_format(const char *arg, struct rev_info *); extern const char *format_subject(struct strbuf *sb, const char *msg, const char *line_separator); @@ -261,11 +297,13 @@ struct commit_extra_header { extern void append_merge_tag_headers(struct commit_list *parents, struct commit_extra_header ***tail); -extern int commit_tree(const struct strbuf *msg, const unsigned char *tree, +extern int commit_tree(const char *msg, size_t msg_len, + const unsigned char *tree, struct commit_list *parents, unsigned char *ret, const char *author, const char *sign_commit); -extern int commit_tree_extended(const struct strbuf *msg, const unsigned char *tree, +extern int commit_tree_extended(const char *msg, size_t msg_len, + const unsigned char *tree, struct commit_list *parents, unsigned char *ret, const char *author, const char *sign_commit, struct commit_extra_header *); @@ -287,7 +325,7 @@ struct merge_remote_desc { */ struct commit *get_merge_parent(const char *name); -extern int parse_signed_commit(const unsigned char *sha1, +extern int parse_signed_commit(const struct commit *commit, struct strbuf *message, struct strbuf *signature); extern void print_commit_list(struct commit_list *list, const char *format_cur, @@ -276,9 +276,10 @@ static int fsck_ident(const char **ident, struct object *obj, fsck_error error_f return 0; } -static int fsck_commit(struct commit *commit, fsck_error error_func) +static int fsck_commit_buffer(struct commit *commit, const char *buffer, + fsck_error error_func) { - const char *buffer = commit->buffer, *tmp; + const char *tmp; unsigned char tree_sha1[20], sha1[20]; struct commit_graft *graft; int parents = 0; @@ -336,6 +337,14 @@ static int fsck_commit(struct commit *commit, fsck_error error_func) return 0; } +static int fsck_commit(struct commit *commit, fsck_error error_func) +{ + const char *buffer = get_commit_buffer(commit, NULL); + int ret = fsck_commit_buffer(commit, buffer, error_func); + unuse_commit_buffer(commit, buffer); + return ret; +} + static int fsck_tag(struct tag *tag, fsck_error error_func) { struct object *tagged = tag->tagged; diff --git a/log-tree.c b/log-tree.c index cf2f86c866..10e68442b3 100644 --- a/log-tree.c +++ b/log-tree.c @@ -376,7 +376,7 @@ static void show_signature(struct rev_info *opt, struct commit *commit) struct strbuf gpg_output = STRBUF_INIT; int status; - if (parse_signed_commit(commit->object.sha1, &payload, &signature) <= 0) + if (parse_signed_commit(commit, &payload, &signature) <= 0) goto out; status = verify_signed_buffer(payload.buf, payload.len, @@ -588,7 +588,7 @@ void show_log(struct rev_info *opt) show_mergetag(opt, commit); } - if (!commit->buffer) + if (!get_cached_commit_buffer(commit, NULL)) return; if (opt->show_notes) { diff --git a/merge-recursive.c b/merge-recursive.c index cab16fafb5..d38a3b2eb5 100644 --- a/merge-recursive.c +++ b/merge-recursive.c @@ -40,7 +40,7 @@ static struct tree *shift_tree_object(struct tree *one, struct tree *two, static struct commit *make_virtual_commit(struct tree *tree, const char *comment) { - struct commit *commit = xcalloc(1, sizeof(struct commit)); + struct commit *commit = alloc_commit_node(); struct merge_remote_desc *desc = xmalloc(sizeof(*desc)); desc->name = comment; @@ -190,9 +190,11 @@ static void output_commit_title(struct merge_options *o, struct commit *commit) printf(_("(bad commit)\n")); else { const char *title; - int len = find_commit_subject(commit->buffer, &title); + const char *msg = get_commit_buffer(commit, NULL); + int len = find_commit_subject(msg, &title); if (len) printf("%.*s\n", len, title); + unuse_commit_buffer(commit, msg); } } } diff --git a/notes-cache.c b/notes-cache.c index 97dfd63c9b..c4e9bb7f6c 100644 --- a/notes-cache.c +++ b/notes-cache.c @@ -48,7 +48,6 @@ int notes_cache_write(struct notes_cache *c) { unsigned char tree_sha1[20]; unsigned char commit_sha1[20]; - struct strbuf msg = STRBUF_INIT; if (!c || !c->tree.initialized || !c->tree.ref || !*c->tree.ref) return -1; @@ -57,9 +56,8 @@ int notes_cache_write(struct notes_cache *c) if (write_notes_tree(&c->tree, tree_sha1)) return -1; - strbuf_attach(&msg, c->validity, - strlen(c->validity), strlen(c->validity) + 1); - if (commit_tree(&msg, tree_sha1, NULL, commit_sha1, NULL, NULL) < 0) + if (commit_tree(c->validity, strlen(c->validity), tree_sha1, NULL, + commit_sha1, NULL, NULL) < 0) return -1; if (update_ref("update notes cache", c->tree.ref, commit_sha1, NULL, 0, UPDATE_REFS_QUIET_ON_ERR) < 0) diff --git a/notes-merge.c b/notes-merge.c index 94a1a8ae46..fd5fae255d 100644 --- a/notes-merge.c +++ b/notes-merge.c @@ -644,7 +644,8 @@ int notes_merge(struct notes_merge_options *o, struct commit_list *parents = NULL; commit_list_insert(remote, &parents); /* LIFO order */ commit_list_insert(local, &parents); - create_notes_commit(local_tree, parents, &o->commit_msg, + create_notes_commit(local_tree, parents, + o->commit_msg.buf, o->commit_msg.len, result_sha1); } @@ -671,8 +672,8 @@ int notes_merge_commit(struct notes_merge_options *o, DIR *dir; struct dirent *e; struct strbuf path = STRBUF_INIT; - char *msg = strstr(partial_commit->buffer, "\n\n"); - struct strbuf sb_msg = STRBUF_INIT; + const char *buffer = get_commit_buffer(partial_commit, NULL); + const char *msg = strstr(buffer, "\n\n"); int baselen; strbuf_addstr(&path, git_path(NOTES_MERGE_WORKTREE)); @@ -719,9 +720,9 @@ int notes_merge_commit(struct notes_merge_options *o, strbuf_setlen(&path, baselen); } - strbuf_attach(&sb_msg, msg, strlen(msg), strlen(msg) + 1); - create_notes_commit(partial_tree, partial_commit->parents, &sb_msg, - result_sha1); + create_notes_commit(partial_tree, partial_commit->parents, + msg, strlen(msg), result_sha1); + unuse_commit_buffer(partial_commit, buffer); if (o->verbosity >= 4) printf("Finalized notes merge commit: %s\n", sha1_to_hex(result_sha1)); diff --git a/notes-utils.c b/notes-utils.c index a0b1d7be98..b64dc1b021 100644 --- a/notes-utils.c +++ b/notes-utils.c @@ -4,7 +4,8 @@ #include "notes-utils.h" void create_notes_commit(struct notes_tree *t, struct commit_list *parents, - const struct strbuf *msg, unsigned char *result_sha1) + const char *msg, size_t msg_len, + unsigned char *result_sha1) { unsigned char tree_sha1[20]; @@ -25,7 +26,7 @@ void create_notes_commit(struct notes_tree *t, struct commit_list *parents, /* else: t->ref points to nothing, assume root/orphan commit */ } - if (commit_tree(msg, tree_sha1, parents, result_sha1, NULL, NULL)) + if (commit_tree(msg, msg_len, tree_sha1, parents, result_sha1, NULL, NULL)) die("Failed to commit notes tree to database"); } @@ -46,7 +47,7 @@ void commit_notes(struct notes_tree *t, const char *msg) if (buf.buf[buf.len - 1] != '\n') strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */ - create_notes_commit(t, NULL, &buf, commit_sha1); + create_notes_commit(t, NULL, buf.buf, buf.len, commit_sha1); strbuf_insert(&buf, 0, "notes: ", 7); /* commit message starts at index 7 */ update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, UPDATE_REFS_DIE_ON_ERR); diff --git a/notes-utils.h b/notes-utils.h index 564e30cccd..890ddb33e1 100644 --- a/notes-utils.h +++ b/notes-utils.h @@ -15,7 +15,7 @@ * The resulting commit SHA1 is stored in result_sha1. */ void create_notes_commit(struct notes_tree *t, struct commit_list *parents, - const struct strbuf *msg, unsigned char *result_sha1); + const char *msg, size_t msg_len, unsigned char *result_sha1); void commit_notes(struct notes_tree *t, const char *msg); @@ -197,8 +197,8 @@ struct object *parse_object_buffer(const unsigned char *sha1, enum object_type t if (commit) { if (parse_commit_buffer(commit, buffer, size)) return NULL; - if (!commit->buffer) { - commit->buffer = buffer; + if (!get_cached_commit_buffer(commit, NULL)) { + set_commit_buffer(commit, buffer, size); *eaten_p = 1; } obj = &commit->object; @@ -606,29 +606,16 @@ static char *replace_encoding_header(char *buf, const char *encoding) return strbuf_detach(&tmp, NULL); } -char *logmsg_reencode(const struct commit *commit, - char **commit_encoding, - const char *output_encoding) +const char *logmsg_reencode(const struct commit *commit, + char **commit_encoding, + const char *output_encoding) { static const char *utf8 = "UTF-8"; const char *use_encoding; char *encoding; - char *msg = commit->buffer; + const char *msg = get_commit_buffer(commit, NULL); char *out; - if (!msg) { - enum object_type type; - unsigned long size; - - msg = read_sha1_file(commit->object.sha1, &type, &size); - if (!msg) - die("Cannot read commit object %s", - sha1_to_hex(commit->object.sha1)); - if (type != OBJ_COMMIT) - die("Expected commit for '%s', got %s", - sha1_to_hex(commit->object.sha1), typename(type)); - } - if (!output_encoding || !*output_encoding) { if (commit_encoding) *commit_encoding = @@ -652,12 +639,13 @@ char *logmsg_reencode(const struct commit *commit, * Otherwise, we still want to munge the encoding header in the * result, which will be done by modifying the buffer. If we * are using a fresh copy, we can reuse it. But if we are using - * the cached copy from commit->buffer, we need to duplicate it - * to avoid munging commit->buffer. + * the cached copy from get_commit_buffer, we need to duplicate it + * to avoid munging the cached copy. */ - out = msg; - if (out == commit->buffer) - out = xstrdup(out); + if (msg == get_cached_commit_buffer(commit, NULL)) + out = xstrdup(msg); + else + out = (char *)msg; } else { /* @@ -667,8 +655,8 @@ char *logmsg_reencode(const struct commit *commit, * copy, we can free it. */ out = reencode_string(msg, output_encoding, use_encoding); - if (out && msg != commit->buffer) - free(msg); + if (out) + unuse_commit_buffer(commit, msg); } /* @@ -687,12 +675,6 @@ char *logmsg_reencode(const struct commit *commit, return out ? out : msg; } -void logmsg_free(char *msg, const struct commit *commit) -{ - if (msg != commit->buffer) - free(msg); -} - static int mailmap_name(const char **email, size_t *email_len, const char **name, size_t *name_len) { @@ -796,7 +778,7 @@ struct format_commit_context { struct signature_check signature_check; enum flush_type flush_type; enum trunc_type truncate; - char *message; + const char *message; char *commit_encoding; size_t width, indent1, indent2; int auto_color; @@ -1536,7 +1518,7 @@ void format_commit_message(const struct commit *commit, } free(context.commit_encoding); - logmsg_free(context.message, commit); + unuse_commit_buffer(commit, context.message); free(context.signature_check.gpg_output); free(context.signature_check.signer); } @@ -1705,7 +1687,7 @@ void pretty_print_commit(struct pretty_print_context *pp, unsigned long beginning_of_body; int indent = 4; const char *msg; - char *reencoded; + const char *reencoded; const char *encoding; int need_8bit_cte = pp->need_8bit_cte; @@ -1772,7 +1754,7 @@ void pretty_print_commit(struct pretty_print_context *pp, if (pp->fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body) strbuf_addch(sb, '\n'); - logmsg_free(reencoded, commit); + unuse_commit_buffer(commit, reencoded); } void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit, diff --git a/revision.c b/revision.c index 8351e794df..2571ada6bf 100644 --- a/revision.c +++ b/revision.c @@ -2791,7 +2791,7 @@ static int commit_match(struct commit *commit, struct rev_info *opt) { int retval; const char *encoding; - char *message; + const char *message; struct strbuf buf = STRBUF_INIT; if (!opt->grep_filter.pattern_list && !opt->grep_filter.header_list) @@ -2833,14 +2833,21 @@ static int commit_match(struct commit *commit, struct rev_info *opt) format_display_notes(commit->object.sha1, &buf, encoding, 1); } - /* Find either in the original commit message, or in the temporary */ + /* + * Find either in the original commit message, or in the temporary. + * Note that we cast away the constness of "message" here. It is + * const because it may come from the cached commit buffer. That's OK, + * because we know that it is modifiable heap memory, and that while + * grep_buffer may modify it for speed, it will restore any + * changes before returning. + */ if (buf.len) retval = grep_buffer(&opt->grep_filter, buf.buf, buf.len); else retval = grep_buffer(&opt->grep_filter, - message, strlen(message)); + (char *)message, strlen(message)); strbuf_release(&buf); - logmsg_free(message, commit); + unuse_commit_buffer(commit, message); return retval; } diff --git a/sequencer.c b/sequencer.c index 923047459b..c513d7eeb4 100644 --- a/sequencer.c +++ b/sequencer.c @@ -116,39 +116,23 @@ static const char *action_name(const struct replay_opts *opts) return opts->action == REPLAY_REVERT ? "revert" : "cherry-pick"; } -static char *get_encoding(const char *message); - struct commit_message { char *parent_label; const char *label; const char *subject; - char *reencoded_message; const char *message; }; static int get_message(struct commit *commit, struct commit_message *out) { - const char *encoding; const char *abbrev, *subject; int abbrev_len, subject_len; char *q; - if (!commit->buffer) - return -1; - encoding = get_encoding(commit->buffer); - if (!encoding) - encoding = "UTF-8"; if (!git_commit_encoding) git_commit_encoding = "UTF-8"; - out->reencoded_message = NULL; - out->message = commit->buffer; - if (same_encoding(encoding, git_commit_encoding)) - out->reencoded_message = reencode_string(commit->buffer, - git_commit_encoding, encoding); - if (out->reencoded_message) - out->message = out->reencoded_message; - + out->message = logmsg_reencode(commit, NULL, git_commit_encoding); abbrev = find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV); abbrev_len = strlen(abbrev); @@ -167,29 +151,10 @@ static int get_message(struct commit *commit, struct commit_message *out) return 0; } -static void free_message(struct commit_message *msg) +static void free_message(struct commit *commit, struct commit_message *msg) { free(msg->parent_label); - free(msg->reencoded_message); -} - -static char *get_encoding(const char *message) -{ - const char *p = message, *eol; - - while (*p && *p != '\n') { - for (eol = p + 1; *eol && *eol != '\n'; eol++) - ; /* do nothing */ - if (starts_with(p, "encoding ")) { - char *result = xmalloc(eol - 8 - p); - strlcpy(result, p + 9, eol - 8 - p); - return result; - } - p = eol; - if (*p == '\n') - p++; - } - return NULL; + unuse_commit_buffer(commit, msg->message); } static void write_cherry_pick_head(struct commit *commit, const char *pseudoref) @@ -489,7 +454,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) unsigned char head[20]; struct commit *base, *next, *parent; const char *base_label, *next_label; - struct commit_message msg = { NULL, NULL, NULL, NULL, NULL }; + struct commit_message msg = { NULL, NULL, NULL, NULL }; char *defmsg = NULL; struct strbuf msgbuf = STRBUF_INIT; int res, unborn = 0, allow; @@ -654,7 +619,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) res = run_git_commit(defmsg, opts, allow); leave: - free_message(&msg); + free_message(commit, &msg); free(defmsg); return res; @@ -701,10 +666,12 @@ static int format_todo(struct strbuf *buf, struct commit_list *todo_list, int subject_len; for (cur = todo_list; cur; cur = cur->next) { + const char *commit_buffer = get_commit_buffer(cur->item, NULL); sha1_abbrev = find_unique_abbrev(cur->item->object.sha1, DEFAULT_ABBREV); - subject_len = find_commit_subject(cur->item->buffer, &subject); + subject_len = find_commit_subject(commit_buffer, &subject); strbuf_addf(buf, "%s %s %.*s\n", action_str, sha1_abbrev, subject_len, subject); + unuse_commit_buffer(cur->item, commit_buffer); } return 0; } diff --git a/sha1_name.c b/sha1_name.c index 2b6322fad0..c2c938c4e1 100644 --- a/sha1_name.c +++ b/sha1_name.c @@ -862,27 +862,17 @@ static int get_sha1_oneline(const char *prefix, unsigned char *sha1, commit_list_insert(l->item, &backup); } while (list) { - char *p, *to_free = NULL; + const char *p, *buf; struct commit *commit; - enum object_type type; - unsigned long size; int matches; commit = pop_most_recent_commit(&list, ONELINE_SEEN); if (!parse_object(commit->object.sha1)) continue; - if (commit->buffer) - p = commit->buffer; - else { - p = read_sha1_file(commit->object.sha1, &type, &size); - if (!p) - continue; - to_free = p; - } - - p = strstr(p, "\n\n"); + buf = get_commit_buffer(commit, NULL); + p = strstr(buf, "\n\n"); matches = p && !regexec(®ex, p + 2, 0, NULL, 0); - free(to_free); + unuse_commit_buffer(commit, buf); if (matches) { hashcpy(sha1, commit->object.sha1); |