mirror of
https://github.com/git/git.git
synced 2024-11-09 02:33:11 +01:00
671c9b7e31
This can do the lstat() storm in parallel, giving potentially much improved performance for cold-cache cases or things like NFS that have weak metadata caching. Just use "read_cache_preload()" instead of "read_cache()" to force an optimistic preload of the index stat data. The function takes a pathspec as its argument, allowing us to preload only the relevant portion of the index. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
|
|
* GIT - The information manager from hell
|
|
*
|
|
* Copyright (C) Linus Torvalds, 2005
|
|
*/
|
|
#include "cache.h"
|
|
#include "diff.h"
|
|
#include "commit.h"
|
|
#include "revision.h"
|
|
#include "builtin.h"
|
|
|
|
static const char diff_files_usage[] =
|
|
"git diff-files [-q] [-0/-1/2/3 |-c|--cc] [<common diff options>] [<path>...]"
|
|
COMMON_DIFF_OPTIONS_HELP;
|
|
|
|
int cmd_diff_files(int argc, const char **argv, const char *prefix)
|
|
{
|
|
struct rev_info rev;
|
|
int result;
|
|
unsigned options = 0;
|
|
|
|
init_revisions(&rev, prefix);
|
|
git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
|
|
rev.abbrev = 0;
|
|
|
|
argc = setup_revisions(argc, argv, &rev, NULL);
|
|
while (1 < argc && argv[1][0] == '-') {
|
|
if (!strcmp(argv[1], "--base"))
|
|
rev.max_count = 1;
|
|
else if (!strcmp(argv[1], "--ours"))
|
|
rev.max_count = 2;
|
|
else if (!strcmp(argv[1], "--theirs"))
|
|
rev.max_count = 3;
|
|
else if (!strcmp(argv[1], "-q"))
|
|
options |= DIFF_SILENT_ON_REMOVED;
|
|
else
|
|
usage(diff_files_usage);
|
|
argv++; argc--;
|
|
}
|
|
if (!rev.diffopt.output_format)
|
|
rev.diffopt.output_format = DIFF_FORMAT_RAW;
|
|
|
|
/*
|
|
* Make sure there are NO revision (i.e. pending object) parameter,
|
|
* rev.max_count is reasonable (0 <= n <= 3), and
|
|
* there is no other revision filtering parameters.
|
|
*/
|
|
if (rev.pending.nr ||
|
|
rev.min_age != -1 || rev.max_age != -1 ||
|
|
3 < rev.max_count)
|
|
usage(diff_files_usage);
|
|
|
|
/*
|
|
* "diff-files --base -p" should not combine merges because it
|
|
* was not asked to. "diff-files -c -p" should not densify
|
|
* (the user should ask with "diff-files --cc" explicitly).
|
|
*/
|
|
if (rev.max_count == -1 && !rev.combine_merges &&
|
|
(rev.diffopt.output_format & DIFF_FORMAT_PATCH))
|
|
rev.combine_merges = rev.dense_combined_merges = 1;
|
|
|
|
if (read_cache_preload(rev.diffopt.paths) < 0) {
|
|
perror("read_cache_preload");
|
|
return -1;
|
|
}
|
|
result = run_diff_files(&rev, options);
|
|
return diff_result_code(&rev.diffopt, result);
|
|
}
|