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builtin-bundle.c - use stream buffered input for rev-list

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git-bundle create on cygwin was nearly unusable due to 1 character
at a time (unbuffered) reading from an exec'ed process. Fix by using
fdopen to get a buffered stream.

Results for "time git bundle create test.bdl v1.0.3..v1.5.2" are:

before this patch:
         cygwin         linux
real    1m38.828s      0m3.578s
user    0m12.122s      0m2.896s
sys     1m28.215s      0m0.692s

after this patch:
real    0m3.688s       0m2.835s
user    0m3.075s       0m2.731s
sys     0m1.075s       0m0.149s

Signed-off-by: Mark Levedahl <mdl123@verizon.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Mark Levedahl 2007-08-10 18:29:49 -04:00 committed by Junio C Hamano
parent c06793a4ed
commit 442b67a559
1 changed files with 5 additions and 2 deletions
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7
builtin-bundle.c
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@ -207,6 +207,7 @@ static int create_bundle(struct bundle_header *header, const char *path,
char buffer[1024];
struct rev_info revs;
struct child_process rls;
FILE *rls_fout;
/*
* NEEDSWORK: this should use something like lock-file
@ -236,10 +237,11 @@ static int create_bundle(struct bundle_header *header, const char *path,
rls.git_cmd = 1;
if (start_command(&rls))
return -1;
while ((i = read_string(rls.out, buffer, sizeof(buffer))) > 0) {
rls_fout = fdopen(rls.out, "r");
while (fgets(buffer, sizeof(buffer), rls_fout)) {
unsigned char sha1[20];
if (buffer[0] == '-') {
write_or_die(bundle_fd, buffer, i);
write_or_die(bundle_fd, buffer, strlen(buffer));
if (!get_sha1_hex(buffer + 1, sha1)) {
struct object *object = parse_object(sha1);
object->flags |= UNINTERESTING;
@ -250,6 +252,7 @@ static int create_bundle(struct bundle_header *header, const char *path,
object->flags |= SHOWN;
}
}
fclose(rls_fout);
if (finish_command(&rls))
return error("rev-list died");