From: Tay Ray Chuan <rctay89@gmail.com>
To: "Git Mailing List" <git@vger.kernel.org>
Cc: "Junio C Hamano" <gitster@pobox.com>,
"Shawn O. Pearce" <spearce@spearce.org>
Subject: [PATCH 2/4] xdiff/xhistogram: rework handling of recursed results
Date: Mon, 1 Aug 2011 12:20:08 +0800 [thread overview]
Message-ID: <1312172410-4380-3-git-send-email-rctay89@gmail.com> (raw)
In-Reply-To: <1312172410-4380-2-git-send-email-rctay89@gmail.com>
Previously we were over-complicating matters by trying to combine the
recursed results. Now, terminate immediately if a recursive call failed
and return its result.
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
xdiff/xhistogram.c | 13 +++++++------
1 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/xdiff/xhistogram.c b/xdiff/xhistogram.c
index 391333a..9cb69ea 100644
--- a/xdiff/xhistogram.c
+++ b/xdiff/xhistogram.c
@@ -339,21 +339,22 @@ static int histogram_diff(xpparam_t const *xpp, xdfenv_t *env,
if (find_lcs(&index, &lcs, line1, count1, line2, count2))
result = fall_back_to_classic_diff(&index, line1, count1, line2, count2);
else {
- result = 0;
if (lcs.begin1 == 0 && lcs.begin2 == 0) {
int ptr;
for (ptr = 0; ptr < count1; ptr++)
env->xdf1.rchg[line1 + ptr - 1] = 1;
for (ptr = 0; ptr < count2; ptr++)
env->xdf2.rchg[line2 + ptr - 1] = 1;
+ result = 0;
} else {
- result = histogram_diff(xpp, env,
+ if (result = histogram_diff(xpp, env,
line1, lcs.begin1 - line1,
- line2, lcs.begin2 - line2);
- result = histogram_diff(xpp, env,
+ line2, lcs.begin2 - line2))
+ goto cleanup;
+ if (result = histogram_diff(xpp, env,
lcs.end1 + 1, LINE_END(1) - lcs.end1,
- lcs.end2 + 1, LINE_END(2) - lcs.end2);
- result *= -1;
+ lcs.end2 + 1, LINE_END(2) - lcs.end2))
+ goto cleanup;
}
}
--
1.7.3.4.730.g67af1.dirty
next prev parent reply other threads:[~2011-08-01 4:20 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-12 6:10 [RFC/PATCH 0/3] teach --histogram to diff Tay Ray Chuan
2011-07-12 6:10 ` [RFC/PATCH 1/3] " Tay Ray Chuan
2011-07-12 6:10 ` [RFC/PATCH 2/3] xdiff/xprepare: skip classification Tay Ray Chuan
2011-07-12 6:10 ` [RFC/PATCH 3/3] xdiff/xprepare: use a smaller sample size for histogram diff Tay Ray Chuan
2011-07-12 19:56 ` [RFC/PATCH 1/3] teach --histogram to diff Junio C Hamano
2011-07-13 16:36 ` Tay Ray Chuan
2011-07-12 14:19 ` [RFC/PATCH 0/3] " Shawn Pearce
2011-07-12 17:43 ` Junio C Hamano
2011-07-13 16:35 ` Tay Ray Chuan
2011-07-13 16:34 ` Tay Ray Chuan
2011-08-01 3:16 ` [PATCH v2 0/8] " Tay Ray Chuan
2011-08-01 3:16 ` [PATCH v2 1/8] xdiff/xprepare: use memset() Tay Ray Chuan
2011-08-01 3:16 ` [PATCH v2 2/8] do away with xdl_mmfile_next() Tay Ray Chuan
2011-08-01 3:16 ` [PATCH v2 3/8] xdiff/xprepare: refactor abort cleanups Tay Ray Chuan
2011-08-01 3:16 ` [PATCH v2 4/8] xdiff/xpatience: factor out fall-back-diff function Tay Ray Chuan
2011-08-01 3:16 ` [PATCH v2 5/8] t4033-diff-patience: factor out tests Tay Ray Chuan
2011-08-01 3:16 ` [PATCH v2 6/8] teach --histogram to diff Tay Ray Chuan
2011-08-01 3:16 ` [PATCH v2 7/8] xdiff/xprepare: skip classification Tay Ray Chuan
2011-08-01 3:16 ` [PATCH v2 8/8] xdiff/xprepare: use a smaller sample size for histogram diff Tay Ray Chuan
2011-08-01 4:20 ` [PATCH 0/4] changes for rc/histogram-diff in 'next' Tay Ray Chuan
2011-08-01 4:20 ` [PATCH 1/4] xdiff: do away with xdl_mmfile_next() Tay Ray Chuan
2011-08-01 4:20 ` Tay Ray Chuan [this message]
2011-08-01 4:20 ` [PATCH 3/4] xdiff/xhistogram: rely on xdl_trim_ends() Tay Ray Chuan
2011-08-01 4:20 ` [PATCH 4/4] xdiff/xhistogram: drop need for additional variable Tay Ray Chuan
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