khash: move oid hash table definition
[gitweb.git] / read-cache.c
index 2549477ed27a7f56b6ee27e44d2345e42a5a8738..4dc6de1b55b0a6047e49f188b28c431f0167d7ef 100644 (file)
@@ -3,7 +3,6 @@
  *
  * Copyright (C) Linus Torvalds, 2005
  */
-#define NO_THE_INDEX_COMPATIBILITY_MACROS
 #include "cache.h"
 #include "config.h"
 #include "diff.h"
@@ -95,7 +94,6 @@ static struct mem_pool *find_mem_pool(struct index_state *istate)
        return *pool_ptr;
 }
 
-struct index_state the_index;
 static const char *alternate_index_output;
 
 static void set_index_entry(struct index_state *istate, int nr, struct cache_entry *ce)
@@ -590,13 +588,19 @@ int remove_index_entry_at(struct index_state *istate, int pos)
  * CE_REMOVE is set in ce_flags.  This is much more effective than
  * calling remove_index_entry_at() for each entry to be removed.
  */
-void remove_marked_cache_entries(struct index_state *istate)
+void remove_marked_cache_entries(struct index_state *istate, int invalidate)
 {
        struct cache_entry **ce_array = istate->cache;
        unsigned int i, j;
 
        for (i = j = 0; i < istate->cache_nr; i++) {
                if (ce_array[i]->ce_flags & CE_REMOVE) {
+                       if (invalidate) {
+                               cache_tree_invalidate_path(istate,
+                                                          ce_array[i]->name);
+                               untracked_cache_remove_from_index(istate,
+                                                                 ce_array[i]->name);
+                       }
                        remove_name_hash(istate, ce_array[i]);
                        save_or_free_index_entry(istate, ce_array[i]);
                }
@@ -703,10 +707,10 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
        int intent_only = flags & ADD_CACHE_INTENT;
        int add_option = (ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE|
                          (intent_only ? ADD_CACHE_NEW_ONLY : 0));
-       int newflags = HASH_WRITE_OBJECT;
+       int hash_flags = HASH_WRITE_OBJECT;
 
-       if (flags & HASH_RENORMALIZE)
-               newflags |= HASH_RENORMALIZE;
+       if (flags & ADD_CACHE_RENORMALIZE)
+               hash_flags |= HASH_RENORMALIZE;
 
        if (!S_ISREG(st_mode) && !S_ISLNK(st_mode) && !S_ISDIR(st_mode))
                return error(_("%s: can only add regular files, symbolic links or git-directories"), path);
@@ -746,7 +750,7 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
        if (ignore_case) {
                adjust_dirname_case(istate, ce->name);
        }
-       if (!(flags & HASH_RENORMALIZE)) {
+       if (!(flags & ADD_CACHE_RENORMALIZE)) {
                alias = index_file_exists(istate, ce->name,
                                          ce_namelen(ce), ignore_case);
                if (alias &&
@@ -762,7 +766,7 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
                }
        }
        if (!intent_only) {
-               if (index_path(istate, &ce->oid, path, st, newflags)) {
+               if (index_path(istate, &ce->oid, path, st, hash_flags)) {
                        discard_cache_entry(ce);
                        return error(_("unable to index file '%s'"), path);
                }
@@ -2222,6 +2226,16 @@ int do_read_index(struct index_state *istate, const char *path, int must_exist)
                load_index_extensions(&p);
        }
        munmap((void *)mmap, mmap_size);
+
+       /*
+        * TODO trace2: replace "the_repository" with the actual repo instance
+        * that is associated with the given "istate".
+        */
+       trace2_data_intmax("index", the_repository, "read/version",
+                          istate->version);
+       trace2_data_intmax("index", the_repository, "read/cache_nr",
+                          istate->cache_nr);
+
        return istate->cache_nr;
 
 unmap:
@@ -2253,9 +2267,17 @@ int read_index_from(struct index_state *istate, const char *path,
        if (istate->initialized)
                return istate->cache_nr;
 
+       /*
+        * TODO trace2: replace "the_repository" with the actual repo instance
+        * that is associated with the given "istate".
+        */
+       trace2_region_enter_printf("index", "do_read_index", the_repository,
+                                  "%s", path);
        trace_performance_enter();
        ret = do_read_index(istate, path, 0);
        trace_performance_leave("read cache %s", path);
+       trace2_region_leave_printf("index", "do_read_index", the_repository,
+                                  "%s", path);
 
        split_index = istate->split_index;
        if (!split_index || is_null_oid(&split_index->base_oid)) {
@@ -2271,7 +2293,11 @@ int read_index_from(struct index_state *istate, const char *path,
 
        base_oid_hex = oid_to_hex(&split_index->base_oid);
        base_path = xstrfmt("%s/sharedindex.%s", gitdir, base_oid_hex);
+       trace2_region_enter_printf("index", "shared/do_read_index",
+                                  the_repository, "%s", base_path);
        ret = do_read_index(split_index->base, base_path, 1);
+       trace2_region_leave_printf("index", "shared/do_read_index",
+                                  the_repository, "%s", base_path);
        if (!oideq(&split_index->base_oid, &split_index->base->oid))
                die(_("broken index, expect %s in %s, got %s"),
                    base_oid_hex, base_path,
@@ -2896,7 +2922,8 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
                        return -1;
        }
 
-       if (!strip_extensions && istate->split_index) {
+       if (!strip_extensions && istate->split_index &&
+           !is_null_oid(&istate->split_index->base_oid)) {
                struct strbuf sb = STRBUF_INIT;
 
                err = write_link_extension(&sb, istate) < 0 ||
@@ -2978,6 +3005,16 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
        istate->timestamp.sec = (unsigned int)st.st_mtime;
        istate->timestamp.nsec = ST_MTIME_NSEC(st);
        trace_performance_since(start, "write index, changed mask = %x", istate->cache_changed);
+
+       /*
+        * TODO trace2: replace "the_repository" with the actual repo instance
+        * that is associated with the given "istate".
+        */
+       trace2_data_intmax("index", the_repository, "write/version",
+                          istate->version);
+       trace2_data_intmax("index", the_repository, "write/cache_nr",
+                          istate->cache_nr);
+
        return 0;
 }
 
@@ -2997,7 +3034,18 @@ static int commit_locked_index(struct lock_file *lk)
 static int do_write_locked_index(struct index_state *istate, struct lock_file *lock,
                                 unsigned flags)
 {
-       int ret = do_write_index(istate, lock->tempfile, 0);
+       int ret;
+
+       /*
+        * TODO trace2: replace "the_repository" with the actual repo instance
+        * that is associated with the given "istate".
+        */
+       trace2_region_enter_printf("index", "do_write_index", the_repository,
+                                  "%s", lock->tempfile->filename.buf);
+       ret = do_write_index(istate, lock->tempfile, 0);
+       trace2_region_leave_printf("index", "do_write_index", the_repository,
+                                  "%s", lock->tempfile->filename.buf);
+
        if (ret)
                return ret;
        if (flags & COMMIT_LOCK)
@@ -3082,7 +3130,13 @@ static int write_shared_index(struct index_state *istate,
        int ret;
 
        move_cache_to_base_index(istate);
+
+       trace2_region_enter_printf("index", "shared/do_write_index",
+                                  the_repository, "%s", (*temp)->filename.buf);
        ret = do_write_index(si->base, *temp, 1);
+       trace2_region_enter_printf("index", "shared/do_write_index",
+                                  the_repository, "%s", (*temp)->filename.buf);
+
        if (ret)
                return ret;
        ret = adjust_shared_perm(get_tempfile_path(*temp));
@@ -3191,7 +3245,7 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock,
        ret = write_split_index(istate, lock, flags);
 
        /* Freshen the shared index only if the split-index was written */
-       if (!ret && !new_shared_index) {
+       if (!ret && !new_shared_index && !is_null_oid(&si->base_oid)) {
                const char *shared_index = git_path("sharedindex.%s",
                                                    oid_to_hex(&si->base_oid));
                freshen_shared_index(shared_index, 1);
@@ -3487,71 +3541,71 @@ static void write_eoie_extension(struct strbuf *sb, git_hash_ctx *eoie_context,
 
 static struct index_entry_offset_table *read_ieot_extension(const char *mmap, size_t mmap_size, size_t offset)
 {
-       const char *index = NULL;
-       uint32_t extsize, ext_version;
-       struct index_entry_offset_table *ieot;
-       int i, nr;
-
-       /* find the IEOT extension */
-       if (!offset)
-              return NULL;
-       while (offset <= mmap_size - the_hash_algo->rawsz - 8) {
-              extsize = get_be32(mmap + offset + 4);
-              if (CACHE_EXT((mmap + offset)) == CACHE_EXT_INDEXENTRYOFFSETTABLE) {
-                      index = mmap + offset + 4 + 4;
-                      break;
-              }
-              offset += 8;
-              offset += extsize;
-       }
-       if (!index)
-              return NULL;
-
-       /* validate the version is IEOT_VERSION */
-       ext_version = get_be32(index);
-       if (ext_version != IEOT_VERSION) {
-              error("invalid IEOT version %d", ext_version);
-              return NULL;
-       }
-       index += sizeof(uint32_t);
-
-       /* extension size - version bytes / bytes per entry */
-       nr = (extsize - sizeof(uint32_t)) / (sizeof(uint32_t) + sizeof(uint32_t));
-       if (!nr) {
-              error("invalid number of IEOT entries %d", nr);
-              return NULL;
-       }
-       ieot = xmalloc(sizeof(struct index_entry_offset_table)
-              + (nr * sizeof(struct index_entry_offset)));
-       ieot->nr = nr;
-       for (i = 0; i < nr; i++) {
-              ieot->entries[i].offset = get_be32(index);
-              index += sizeof(uint32_t);
-              ieot->entries[i].nr = get_be32(index);
-              index += sizeof(uint32_t);
-       }
-
-       return ieot;
+       const char *index = NULL;
+       uint32_t extsize, ext_version;
+       struct index_entry_offset_table *ieot;
+       int i, nr;
+
+       /* find the IEOT extension */
+       if (!offset)
+               return NULL;
+       while (offset <= mmap_size - the_hash_algo->rawsz - 8) {
+               extsize = get_be32(mmap + offset + 4);
+               if (CACHE_EXT((mmap + offset)) == CACHE_EXT_INDEXENTRYOFFSETTABLE) {
+                       index = mmap + offset + 4 + 4;
+                       break;
+               }
+               offset += 8;
+               offset += extsize;
+       }
+       if (!index)
+               return NULL;
+
+       /* validate the version is IEOT_VERSION */
+       ext_version = get_be32(index);
+       if (ext_version != IEOT_VERSION) {
+               error("invalid IEOT version %d", ext_version);
+               return NULL;
+       }
+       index += sizeof(uint32_t);
+
+       /* extension size - version bytes / bytes per entry */
+       nr = (extsize - sizeof(uint32_t)) / (sizeof(uint32_t) + sizeof(uint32_t));
+       if (!nr) {
+               error("invalid number of IEOT entries %d", nr);
+               return NULL;
+       }
+       ieot = xmalloc(sizeof(struct index_entry_offset_table)
+                      + (nr * sizeof(struct index_entry_offset)));
+       ieot->nr = nr;
+       for (i = 0; i < nr; i++) {
+               ieot->entries[i].offset = get_be32(index);
+               index += sizeof(uint32_t);
+               ieot->entries[i].nr = get_be32(index);
+               index += sizeof(uint32_t);
+       }
+
+       return ieot;
 }
 
 static void write_ieot_extension(struct strbuf *sb, struct index_entry_offset_table *ieot)
 {
-       uint32_t buffer;
-       int i;
+       uint32_t buffer;
+       int i;
 
-       /* version */
-       put_be32(&buffer, IEOT_VERSION);
-       strbuf_add(sb, &buffer, sizeof(uint32_t));
+       /* version */
+       put_be32(&buffer, IEOT_VERSION);
+       strbuf_add(sb, &buffer, sizeof(uint32_t));
 
-       /* ieot */
-       for (i = 0; i < ieot->nr; i++) {
+       /* ieot */
+       for (i = 0; i < ieot->nr; i++) {
 
-              /* offset */
-              put_be32(&buffer, ieot->entries[i].offset);
-              strbuf_add(sb, &buffer, sizeof(uint32_t));
+               /* offset */
+               put_be32(&buffer, ieot->entries[i].offset);
+               strbuf_add(sb, &buffer, sizeof(uint32_t));
 
-              /* count */
-              put_be32(&buffer, ieot->entries[i].nr);
-              strbuf_add(sb, &buffer, sizeof(uint32_t));
-       }
+               /* count */
+               put_be32(&buffer, ieot->entries[i].nr);
+               strbuf_add(sb, &buffer, sizeof(uint32_t));
+       }
 }