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compat: introduce on_disk_bytes() 

Some platforms do not have st_blocks member in "struct stat"; mingw
already emulates it by rounding it up to closest 512-byte blocks (even
though it could overcount when a file has holes).

The reason to use the member is only to figure out how many kilobytes the
files occupy on-disk, so give a helper function in git-compat-util.h to
compute this value.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Johannes Sixt <johannes.sixt@telecom.at>
This commit is contained in:
Junio C Hamano 2008-08-18 21:57:16 +02:00
parent 2ebc02d32a
commit fdb2a2a600
5 changed files with 15 additions and 11 deletions
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7
Makefile
View File

@ -124,6 +124,9 @@ all::
# Define USE_STDEV below if you want git to care about the underlying device
# change being considered an inode change from the update-index perspective.
#
# Define NO_ST_BLOCKS_IN_STRUCT_STAT if your platform does not have st_blocks
# field that counts the on-disk footprint in 512-byte blocks.
#
# Define ASCIIDOC8 if you want to format documentation with AsciiDoc 8
#
# Define DOCBOOK_XSL_172 if you want to format man pages with DocBook XSL v1.72.
@ -749,6 +752,7 @@ ifneq (,$(findstring MINGW,$(uname_S)))
NO_SVN_TESTS = YesPlease
NO_PERL_MAKEMAKER = YesPlease
NO_POSIX_ONLY_PROGRAMS = YesPlease
NO_ST_BLOCKS_IN_STRUCT_STAT = YesPlease
COMPAT_CFLAGS += -D__USE_MINGW_ACCESS -DNOGDI -Icompat
COMPAT_CFLAGS += -DSNPRINTF_SIZE_CORR=1
COMPAT_CFLAGS += -DSTRIP_EXTENSION=\".exe\"
@ -863,6 +867,9 @@ endif
ifdef NO_D_INO_IN_DIRENT
BASIC_CFLAGS += -DNO_D_INO_IN_DIRENT
endif
ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
BASIC_CFLAGS += -DNO_ST_BLOCKS_IN_STRUCT_STAT
endif
ifdef NO_C99_FORMAT
BASIC_CFLAGS += -DNO_C99_FORMAT
endif

4
builtin-count-objects.c
View File

@ -43,7 +43,7 @@ static void count_objects(DIR *d, char *path, int len, int verbose,
if (lstat(path, &st) || !S_ISREG(st.st_mode))
bad = 1;
else
(*loose_size) += xsize_t(st.st_blocks);
(*loose_size) += xsize_t(on_disk_bytes(st));
}
if (bad) {
if (verbose) {
@ -115,7 +115,7 @@ int cmd_count_objects(int argc, const char **argv, const char *prefix)
num_pack++;
}
printf("count: %lu\n", loose);
printf("size: %lu\n", loose_size / 2);
printf("size: %lu\n", loose_size / 1024);
printf("in-pack: %lu\n", packed);
printf("packs: %lu\n", num_pack);
printf("prune-packable: %lu\n", packed_loose);

8
compat/mingw.c
View File

@ -31,11 +31,6 @@ static inline time_t filetime_to_time_t(const FILETIME *ft)
return (time_t)winTime;
}
static inline size_t size_to_blocks(size_t s)
{
return (s+511)/512;
}
extern int _getdrive( void );
/* We keep the do_lstat code in a separate function to avoid recursion.
* When a path ends with a slash, the stat will fail with ENOENT. In
@ -59,7 +54,6 @@ static int do_lstat(const char *file_name, struct stat *buf)
buf->st_uid = 0;
buf->st_mode = fMode;
buf->st_size = fdata.nFileSizeLow; /* Can't use nFileSizeHigh, since it's not a stat64 */
buf->st_blocks = size_to_blocks(buf->st_size);
buf->st_dev = _getdrive() - 1;
buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
@ -142,7 +136,6 @@ int mingw_fstat(int fd, struct mingw_stat *buf)
buf->st_uid = st.st_uid;
buf->st_mode = st.st_mode;
buf->st_size = st.st_size;
buf->st_blocks = size_to_blocks(buf->st_size);
buf->st_dev = st.st_dev;
buf->st_atime = st.st_atime;
buf->st_mtime = st.st_mtime;
@ -164,7 +157,6 @@ int mingw_fstat(int fd, struct mingw_stat *buf)
buf->st_uid = 0;
buf->st_mode = fMode;
buf->st_size = fdata.nFileSizeLow; /* Can't use nFileSizeHigh, since it's not a stat64 */
buf->st_blocks = size_to_blocks(buf->st_size);
buf->st_dev = _getdrive() - 1;
buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));

1
compat/mingw.h
View File

@ -169,7 +169,6 @@ struct mingw_stat {
time_t st_mtime, st_atime, st_ctime;
unsigned st_dev, st_ino, st_uid, st_gid;
size_t st_size;
size_t st_blocks;
};
int mingw_lstat(const char *file_name, struct mingw_stat *buf);
int mingw_fstat(int fd, struct mingw_stat *buf);

6
git-compat-util.h
View File

@ -192,6 +192,12 @@ extern int git_munmap(void *start, size_t length);
#endif /* NO_MMAP */
#ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
#define on_disk_bytes(st) ((st).st_size)
#else
#define on_disk_bytes(st) ((st).st_blocks * 512)
#endif
#define DEFAULT_PACKED_GIT_LIMIT \
((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256))