Revision 4e1dc640097d4e389f12bcf12f75cdf7e4ceae61 authored by Junio C Hamano on 14 April 2006, 22:57:32 UTC, committed by Junio C Hamano on 15 April 2006, 04:52:50 UTC
I noticed bisect does not work well without both good and bad. Running this script in git.git repository would give you quite different results: #!/bin/sh initial=e83c5163316f89bfbde7d9ab23ca2e25604af290 mid0=`git rev-list --bisect ^$initial --all` git rev-list $mid0 | wc -l git rev-list ^$mid0 --all | wc -l mid1=`git rev-list --bisect --all` git rev-list $mid1 | wc -l git rev-list ^$mid1 --all | wc -l The $initial commit is the very first commit you made. The first midpoint bisects things evenly as designed, but the latter does not. The reason I got interested in this was because I was wondering if something like the following would help people converting a huge repository from foreign SCM, or preparing a repository to be fetched over plain dumb HTTP only: #!/bin/sh N=4 P=.git/objects/pack bottom= while test 0 \< $N do N=$((N-1)) if test -z "$bottom" then newbottom=`git rev-list --bisect --all` else newbottom=`git rev-list --bisect ^$bottom --all` fi if test -z "$bottom" then rev_list="$newbottom" elif test 0 = $N then rev_list="^$bottom --all" else rev_list="^$bottom $newbottom" fi p=$(git rev-list --unpacked --objects $rev_list | git pack-objects $P/pack) git show-index <$P/pack-$p.idx | wc -l bottom=$newbottom done The idea is to pack older half of the history to one pack, then older half of the remaining history to another, to continue a few times, using finer granularity as we get closer to the tip. This may not matter, since for a truly huge history, running bisect number of times could be quite time consuming, and we might be better off running "git rev-list --all" once into a temporary file, and manually pick cut-off points from the resulting list of commits. After all we are talking about "approximately half" for such an usage, and older history does not matter much. Signed-off-by: Junio C Hamano <junkio@cox.net>
1 parent 40c2fe0
t4109-apply-multifrag.sh
#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
# Copyright (c) 2005 Robert Fitzsimons
#
test_description='git-apply test patches with multiple fragments.
'
. ./test-lib.sh
# setup
cat > patch1.patch <<\EOF
diff --git a/main.c b/main.c
new file mode 100644
--- /dev/null
+++ b/main.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+int func(int num);
+void print_int(int num);
+
+int main() {
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ print_int(func(i));
+ }
+
+ return 0;
+}
+
+int func(int num) {
+ return num * num;
+}
+
+void print_int(int num) {
+ printf("%d", num);
+}
+
EOF
cat > patch2.patch <<\EOF
diff --git a/main.c b/main.c
--- a/main.c
+++ b/main.c
@@ -1,7 +1,9 @@
+#include <stdlib.h>
#include <stdio.h>
int func(int num);
void print_int(int num);
+void print_ln();
int main() {
int i;
@@ -10,6 +12,8 @@
print_int(func(i));
}
+ print_ln();
+
return 0;
}
@@ -21,3 +25,7 @@
printf("%d", num);
}
+void print_ln() {
+ printf("\n");
+}
+
EOF
cat > patch3.patch <<\EOF
diff --git a/main.c b/main.c
--- a/main.c
+++ b/main.c
@@ -1,9 +1,7 @@
-#include <stdlib.h>
#include <stdio.h>
int func(int num);
void print_int(int num);
-void print_ln();
int main() {
int i;
@@ -12,8 +10,6 @@
print_int(func(i));
}
- print_ln();
-
return 0;
}
@@ -25,7 +21,3 @@
printf("%d", num);
}
-void print_ln() {
- printf("\n");
-}
-
EOF
cat > patch4.patch <<\EOF
diff --git a/main.c b/main.c
--- a/main.c
+++ b/main.c
@@ -1,13 +1,14 @@
#include <stdio.h>
int func(int num);
-void print_int(int num);
+int func2(int num);
int main() {
int i;
for (i = 0; i < 10; i++) {
- print_int(func(i));
+ printf("%d", func(i));
+ printf("%d", func3(i));
}
return 0;
@@ -17,7 +18,7 @@
return num * num;
}
-void print_int(int num) {
- printf("%d", num);
+int func2(int num) {
+ return num * num * num;
}
EOF
test_expect_success "S = git-apply (1)" \
'git-apply patch1.patch patch2.patch'
mv main.c main.c.git
test_expect_success "S = patch (1)" \
'cat patch1.patch patch2.patch | patch -p1'
test_expect_success "S = cmp (1)" \
'cmp main.c.git main.c'
rm -f main.c main.c.git
test_expect_success "S = git-apply (2)" \
'git-apply patch1.patch patch2.patch patch3.patch'
mv main.c main.c.git
test_expect_success "S = patch (2)" \
'cat patch1.patch patch2.patch patch3.patch | patch -p1'
test_expect_success "S = cmp (2)" \
'cmp main.c.git main.c'
rm -f main.c main.c.git
test_expect_success "S = git-apply (3)" \
'git-apply patch1.patch patch4.patch'
mv main.c main.c.git
test_expect_success "S = patch (3)" \
'cat patch1.patch patch4.patch | patch -p1'
test_expect_success "S = cmp (3)" \
'cmp main.c.git main.c'
test_done
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