[PATCH v5 6/8] convert: rename reusable sub-process functions

[Ben Peart <peartben@gmail.com>]

Do a mechanical rename of the functions that will become the reusable
sub-process module.

Signed-off-by: Ben Peart <benpeart@microsoft.com>
---
 convert.c | 53 +++++++++++++++++++++++++++--------------------------
 1 file changed, 27 insertions(+), 26 deletions(-)

diff --git a/convert.c b/convert.c
index 747c0c363b..235a6a5279 100644
--- a/convert.c
+++ b/convert.c
@@ -507,8 +507,8 @@ struct cmd2process {
 	unsigned int supported_capabilities;
 };
 
-static int cmd_process_map_initialized;
-static struct hashmap cmd_process_map;
+static int subprocess_map_initialized;
+static struct hashmap subprocess_map;
 
 static int cmd2process_cmp(const struct subprocess_entry *e1,
 			   const struct subprocess_entry *e2,
@@ -517,22 +517,22 @@ static int cmd2process_cmp(const struct subprocess_entry *e1,
 	return strcmp(e1->cmd, e2->cmd);
 }
 
-static struct subprocess_entry *find_multi_file_filter_entry(const char *cmd)
+static struct subprocess_entry *subprocess_find_entry(const char *cmd)
 {
 	struct subprocess_entry key;
 
-	if (!cmd_process_map_initialized) {
-		cmd_process_map_initialized = 1;
-		hashmap_init(&cmd_process_map, (hashmap_cmp_fn)cmd2process_cmp, 0);
+	if (!subprocess_map_initialized) {
+		subprocess_map_initialized = 1;
+		hashmap_init(&subprocess_map, (hashmap_cmp_fn)cmd2process_cmp, 0);
 		return NULL;
 	}
 
 	hashmap_entry_init(&key, strhash(cmd));
 	key.cmd = cmd;
-	return hashmap_get(&cmd_process_map, &key, NULL);
+	return hashmap_get(&subprocess_map, &key, NULL);
 }
 
-static void read_multi_file_filter_status(int fd, struct strbuf *status)
+static void subprocess_read_status(int fd, struct strbuf *status)
 {
 	struct strbuf **pair;
 	char *line;
@@ -552,7 +552,7 @@ static void read_multi_file_filter_status(int fd, struct strbuf *status)
 	}
 }
 
-static void kill_multi_file_filter(struct subprocess_entry *entry)
+static void subprocess_stop(struct subprocess_entry *entry)
 {
 	if (!entry)
 		return;
@@ -561,14 +561,14 @@ static void kill_multi_file_filter(struct subprocess_entry *entry)
 	kill(entry->process.pid, SIGTERM);
 	finish_command(&entry->process);
 
-	hashmap_remove(&cmd_process_map, entry, NULL);
+	hashmap_remove(&subprocess_map, entry, NULL);
 	free(entry);
 }
 
-static void stop_multi_file_filter(struct child_process *process)
+static void subprocess_exit_handler(struct child_process *process)
 {
 	sigchain_push(SIGPIPE, SIG_IGN);
-	/* Closing the pipe signals the filter to initiate a shutdown. */
+	/* Closing the pipe signals the subprocess to initiate a shutdown. */
 	close(process->in);
 	close(process->out);
 	sigchain_pop(SIGPIPE);
@@ -640,16 +640,16 @@ static int start_multi_file_filter_fn(struct subprocess_entry *subprocess)
 }
 
 typedef int(*subprocess_start_fn)(struct subprocess_entry *entry);
-int start_multi_file_filter(struct subprocess_entry *entry, const char *cmd,
+int subprocess_start(struct subprocess_entry *entry, const char *cmd,
 	subprocess_start_fn startfn)
 {
 	int err;
 	struct child_process *process;
 	const char *argv[] = { cmd, NULL };
 
-	if (!cmd_process_map_initialized) {
-		cmd_process_map_initialized = 1;
-		hashmap_init(&cmd_process_map, (hashmap_cmp_fn)cmd2process_cmp, 0);
+	if (!subprocess_map_initialized) {
+		subprocess_map_initialized = 1;
+		hashmap_init(&subprocess_map, (hashmap_cmp_fn)cmd2process_cmp, 0);
 	}
 
 	entry->cmd = cmd;
@@ -661,11 +661,11 @@ int start_multi_file_filter(struct subprocess_entry *entry, const char *cmd,
 	process->in = -1;
 	process->out = -1;
 	process->clean_on_exit = 1;
-	process->clean_on_exit_handler = stop_multi_file_filter;
+	process->clean_on_exit_handler = subprocess_exit_handler;
 
 	err = start_command(process);
 	if (err) {
-		error("cannot fork to run external filter '%s'", cmd);
+		error("cannot fork to run subprocess '%s'", cmd);
 		return err;
 	}
 
@@ -673,12 +673,12 @@ int start_multi_file_filter(struct subprocess_entry *entry, const char *cmd,
 
 	err = startfn(entry);
 	if (err) {
-		error("initialization for external filter '%s' failed", cmd);
-		kill_multi_file_filter(entry);
+		error("initialization for subprocess '%s' failed", cmd);
+		subprocess_stop(entry);
 		return err;
 	}
 
-	hashmap_add(&cmd_process_map, entry);
+	hashmap_add(&subprocess_map, entry);
 	return 0;
 }
 
@@ -693,7 +693,7 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len
 	struct strbuf filter_status = STRBUF_INIT;
 	const char *filter_type;
 
-	entry = (struct cmd2process *)find_multi_file_filter_entry(cmd);
+	entry = (struct cmd2process *)subprocess_find_entry(cmd);
 
 	fflush(NULL);
 
@@ -701,7 +701,7 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len
 		entry = xmalloc(sizeof(*entry));
 		entry->supported_capabilities = 0;
 
-		if (start_multi_file_filter(&entry->subprocess, cmd, start_multi_file_filter_fn)) {
+		if (subprocess_start(&entry->subprocess, cmd, start_multi_file_filter_fn)) {
 			free(entry);
 			return 0;
 		}
@@ -746,7 +746,7 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len
 	if (err)
 		goto done;
 
-	read_multi_file_filter_status(process->out, &filter_status);
+	subprocess_read_status(process->out, &filter_status);
 	err = strcmp(filter_status.buf, "success");
 	if (err)
 		goto done;
@@ -755,7 +755,7 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len
 	if (err)
 		goto done;
 
-	read_multi_file_filter_status(process->out, &filter_status);
+	subprocess_read_status(process->out, &filter_status);
 	err = strcmp(filter_status.buf, "success");
 
 done:
@@ -777,7 +777,8 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len
 			 * Force shutdown and restart if another blob requires filtering.
 			 */
 			error("external filter '%s' failed", cmd);
-			kill_multi_file_filter((struct subprocess_entry *)entry);
+			subprocess_stop((struct subprocess_entry *)entry);
+			free(entry);
 		}
 	} else {
 		strbuf_swap(dst, &nbuf);
-- 
2.12.0.windows.1.31.g1548525701.dirty