du: Hash with a mechanism that's simpler and takes less memory.

* gl/lib/dev-map.c, gl/lib/dev-map.h, gl/modules/dev-map: Remove.
* gl/lib/ino-map.c, gl/lib/ino-map.h, gl/modules/ino-map: New files.
* gl/modules/dev-map-tests, gl/tests/test-dev-map.c: Remove.
* gl/modules/ino-map-tests, gl/tests/test-ino-map.c: New files.
* gl/lib/di-set.h (struct di_set): Renamed from struct di_set_state,
and now private.  All uses changed.
(_ATTRIBUTE_NONNULL_): Don't assume C99.
(di_set_alloc): Renamed from di_set_init, with no size arg.
Now allocates the object rather than initializing it.
For now, this no longer takes an initial size; we can put this
back later if it is needed.
* gl/lib/di-set.c: Include hash.h, ino-map.h, and limits.h instead of
stdio.h, assert.h, stdint.h, sys/types.h (di-set.h includes that
now), sys/stat.h, and verify.h.
(N_DEV_BITS_4, N_INO_BITS_4, N_DEV_BITS_8, N_INO_BITS_8): Remove.
(struct dev_ino_4, struct dev_ino_8, struct dev_ino_full): Remove.
(enum di_mode): Remove.
(hashint): New typedef.
(HASHINT_MAX, LARGE_INO_MIN): New macros.
(struct di_ent): Now maps a dev_t to a inode set, instead of
containing a union.
(struct dev_map_ent): Remove.
(struct di_set): New type.
(is_encoded_ptr, decode_ptr, di_ent_create): Remove.
(di_ent_hash, di_ent_compare, di_ent_free, di_set_alloc, di_set_free):
(di_set_insert): Adjust to new representation.
(di_ino_hash, map_device, map_inode_number): New functions.
* gl/modules/di-set (Depends-on): Replace dev-map with ino-map.
Remove 'verify'.
* gl/tests/test-di-set.c: Adjust to the above changes to API.
* src/du.c (INITIAL_DI_SET_SIZE): Remove.
(hash_ins, main): Adjust to new di-set API.

5 files changed, 35 insertions, 35 deletions

diff --git a/gl/modules/dev-map b/gl/modules/dev-map
deleted file mode 100644
index 91f437b27..000000000
--- a/gl/modules/dev-map
+++ /dev/null
@@ -1,23 +0,0 @@
-Description:
-maintain a mapping of dev_t numbers to small integers
-
-Files:
-lib/dev-map.c
-lib/dev-map.h
-
-Depends-on:
-hash
-
-configure.ac:
-
-Makefile.am:
-lib_SOURCES += dev-map.c dev-map.h
-
-Include:
-"dev-map.h"
-
-License
-GPL
-
-Maintainer:
-Jim Meyering
diff --git a/gl/modules/dev-map-tests b/gl/modules/dev-map-tests
deleted file mode 100644
index 4bec2e6b2..000000000
--- a/gl/modules/dev-map-tests
+++ /dev/null
@@ -1,10 +0,0 @@
-Files:
-tests/test-dev-map.c
-
-Depends-on:
-
-configure.ac:
-
-Makefile.am:
-TESTS += test-dev-map
-check_PROGRAMS += test-dev-map
diff --git a/gl/modules/di-set b/gl/modules/di-set
index fe5277858..562db14a4 100644
--- a/gl/modules/di-set
+++ b/gl/modules/di-set
@@ -6,9 +6,8 @@ lib/di-set.c
 lib/di-set.h
 
 Depends-on:
-dev-map
+ino-map
 hash
-verify
 
 configure.ac:
 
diff --git a/gl/modules/ino-map b/gl/modules/ino-map
new file mode 100644
index 000000000..06ee51d5b
--- /dev/null
+++ b/gl/modules/ino-map
@@ -0,0 +1,24 @@
+Description:
+maintain a mapping of ino_t numbers to small integers
+
+Files:
+lib/ino-map.c
+lib/ino-map.h
+
+Depends-on:
+hash
+verify
+
+configure.ac:
+
+Makefile.am:
+lib_SOURCES += ino-map.c ino-map.h
+
+Include:
+"ino-map.h"
+
+License
+GPL
+
+Maintainer:
+Jim Meyering
diff --git a/gl/modules/ino-map-tests b/gl/modules/ino-map-tests
new file mode 100644
index 000000000..fa10b4ffc
--- /dev/null
+++ b/gl/modules/ino-map-tests
@@ -0,0 +1,10 @@
+Files:
+tests/test-ino-map.c
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-ino-map
+check_PROGRAMS += test-ino-map