From: Ben Peart <peartben@gmail.com>
To: git@vger.kernel.org
Cc: gitster@pobox.com, benpeart@microsoft.com,
christian.couder@gmail.com, larsxschneider@gmail.com,
peff@peff.net
Subject: [PATCH v7 10/10] convert: Update subprocess_read_status to not die on EOF
Date: Fri, 5 May 2017 11:28:02 -0400 [thread overview]
Message-ID: <20170505152802.6724-11-benpeart@microsoft.com> (raw)
In-Reply-To: <20170505152802.6724-1-benpeart@microsoft.com>
Enable sub-processes to gracefully handle when the process dies by
updating subprocess_read_status to return an error on EOF instead of
dying.
Update apply_multi_file_filter to take advantage of the revised
subprocess_read_status.
Signed-off-by: Ben Peart <benpeart@microsoft.com>
---
convert.c | 10 ++++++++--
sub-process.c | 10 +++++++---
sub-process.h | 2 +-
3 files changed, 16 insertions(+), 6 deletions(-)
diff --git a/convert.c b/convert.c
index acf51416d1..85238e4976 100644
--- a/convert.c
+++ b/convert.c
@@ -635,7 +635,10 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len
if (err)
goto done;
- subprocess_read_status(process->out, &filter_status);
+ err = subprocess_read_status(process->out, &filter_status);
+ if (err)
+ goto done;
+
err = strcmp(filter_status.buf, "success");
if (err)
goto done;
@@ -644,7 +647,10 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len
if (err)
goto done;
- subprocess_read_status(process->out, &filter_status);
+ err = subprocess_read_status(process->out, &filter_status);
+ if (err)
+ goto done;
+
err = strcmp(filter_status.buf, "success");
done:
diff --git a/sub-process.c b/sub-process.c
index 536b60cced..92f8aea70a 100644
--- a/sub-process.c
+++ b/sub-process.c
@@ -21,13 +21,15 @@ struct subprocess_entry *subprocess_find_entry(struct hashmap *hashmap, const ch
return hashmap_get(hashmap, &key, NULL);
}
-void subprocess_read_status(int fd, struct strbuf *status)
+int subprocess_read_status(int fd, struct strbuf *status)
{
struct strbuf **pair;
char *line;
+ int len;
+
for (;;) {
- line = packet_read_line(fd, NULL);
- if (!line)
+ len = packet_read_line_gently(fd, NULL, &line);
+ if ((len < 0) || !line)
break;
pair = strbuf_split_str(line, '=', 2);
if (pair[0] && pair[0]->len && pair[1]) {
@@ -39,6 +41,8 @@ void subprocess_read_status(int fd, struct strbuf *status)
}
strbuf_list_free(pair);
}
+
+ return (len < 0) ? len : 0;
}
void subprocess_stop(struct hashmap *hashmap, struct subprocess_entry *entry)
diff --git a/sub-process.h b/sub-process.h
index a88e782bfc..7d451e1cde 100644
--- a/sub-process.h
+++ b/sub-process.h
@@ -44,6 +44,6 @@ static inline struct child_process *subprocess_get_child_process(
* key/value pairs and return the value from the last "status" packet
*/
-void subprocess_read_status(int fd, struct strbuf *status);
+int subprocess_read_status(int fd, struct strbuf *status);
#endif
--
2.12.2.gvfs.2.20.g3624a68d62.dirty
next prev parent reply other threads:[~2017-05-05 15:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-05 15:27 [PATCH v7 00/10] refactor the filter process code into a reusable module Ben Peart
2017-05-05 15:27 ` [PATCH v7 01/10] convert: remove erroneous tests for errno == EPIPE Ben Peart
2017-05-05 15:27 ` [PATCH v7 02/10] pkt-line: fix packet_read_line() to handle len < 0 errors Ben Peart
2017-05-05 15:27 ` [PATCH v7 03/10] pkt-line: add packet_read_line_gently() Ben Peart
2017-05-05 15:27 ` [PATCH v7 04/10] convert: move packet_write_line() into pkt-line as packet_writel() Ben Peart
2017-05-13 9:04 ` Jeff King
2017-05-15 4:02 ` Junio C Hamano
2017-05-05 15:27 ` [PATCH v7 05/10] convert: split start_multi_file_filter() into two separate functions Ben Peart
2017-05-05 15:27 ` [PATCH v7 06/10] convert: Separate generic structures and variables from the filter specific ones Ben Peart
2017-05-05 15:27 ` [PATCH v7 07/10] convert: Update generic functions to only use generic data structures Ben Peart
2017-05-05 15:28 ` [PATCH v7 08/10] convert: rename reusable sub-process functions Ben Peart
2017-05-05 15:28 ` [PATCH v7 09/10] sub-process: move sub-process functions into separate files Ben Peart
2017-05-13 9:07 ` Jeff King
2017-05-05 15:28 ` Ben Peart [this message]
2017-05-08 1:58 ` [PATCH v7 00/10] refactor the filter process code into a reusable module Junio C Hamano
2017-05-13 9:16 ` Jeff King
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