[PATCH 4/4] Remove callback data parameter for cache slots

[Lukas Fleischer]

This is no longer needed since the context is always read from the
global context variable.

Signed-off-by: Lukas Fleischer <cgit at cryptocrack.de>
---
 cache.c | 14 ++++++--------
 cache.h |  5 ++---
 cgit.c  |  4 ++--
 3 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/cache.c b/cache.c
index fa83ddc..fcd461f 100644
--- a/cache.c
+++ b/cache.c
@@ -24,7 +24,6 @@ struct cache_slot {
 	int keylen;
 	int ttl;
 	cache_fill_fn fn;
-	void *cbdata;
 	int cache_fd;
 	int lock_fd;
 	const char *cache_name;
@@ -187,7 +186,7 @@ static int fill_slot(struct cache_slot *slot)
 		return errno;
 
 	/* Generate cache content */
-	slot->fn(slot->cbdata);
+	slot->fn();
 
 	/* Restore stdout */
 	if (dup2(tmp, STDOUT_FILENO) == -1)
@@ -277,7 +276,7 @@ static int process_slot(struct cache_slot *slot)
 	if ((err = lock_slot(slot)) != 0) {
 		cache_log("[cgit] Unable to lock slot %s: %s (%d)\n",
 			  slot->lock_name, strerror(err), err);
-		slot->fn(slot->cbdata);
+		slot->fn();
 		return 0;
 	}
 
@@ -286,7 +285,7 @@ static int process_slot(struct cache_slot *slot)
 			  slot->lock_name, strerror(err), err);
 		unlock_slot(slot, 0);
 		close_lock(slot);
-		slot->fn(slot->cbdata);
+		slot->fn();
 		return 0;
 	}
 	// We've got a valid cache slot in the lock file, which
@@ -310,7 +309,7 @@ static int process_slot(struct cache_slot *slot)
 
 /* Print cached content to stdout, generate the content if necessary. */
 int cache_process(int size, const char *path, const char *key, int ttl,
-		  cache_fill_fn fn, void *cbdata)
+		  cache_fill_fn fn)
 {
 	unsigned long hash;
 	int i;
@@ -321,14 +320,14 @@ int cache_process(int size, const char *path, const char *key, int ttl,
 
 	/* If the cache is disabled, just generate the content */
 	if (size <= 0) {
-		fn(cbdata);
+		fn();
 		return 0;
 	}
 
 	/* Verify input, calculate filenames */
 	if (!path) {
 		cache_log("[cgit] Cache path not specified, caching is disabled\n");
-		fn(cbdata);
+		fn();
 		return 0;
 	}
 	if (!key)
@@ -343,7 +342,6 @@ int cache_process(int size, const char *path, const char *key, int ttl,
 	strbuf_addbuf(&lockname, &filename);
 	strbuf_addstr(&lockname, ".lock");
 	slot.fn = fn;
-	slot.cbdata = cbdata;
 	slot.ttl = ttl;
 	slot.cache_name = filename.buf;
 	slot.lock_name = lockname.buf;
diff --git a/cache.h b/cache.h
index 5cfdb4f..9392836 100644
--- a/cache.h
+++ b/cache.h
@@ -6,7 +6,7 @@
 #ifndef CGIT_CACHE_H
 #define CGIT_CACHE_H
 
-typedef void (*cache_fill_fn)(void *cbdata);
+typedef void (*cache_fill_fn)(void);
 
 
 /* Print cached content to stdout, generate the content if necessary.
@@ -17,13 +17,12 @@ typedef void (*cache_fill_fn)(void *cbdata);
  *   key     the key used to lookup cache files
  *   ttl     max cache time in seconds for this key
  *   fn      content generator function for this key
- *   cbdata  user-supplied data to the content generator function
  *
  * Return value
  *   0 indicates success, everyting else is an error
  */
 extern int cache_process(int size, const char *path, const char *key, int ttl,
-			 cache_fill_fn fn, void *cbdata);
+			 cache_fill_fn fn);
 
 
 /* List info about all cache entries on stdout */
diff --git a/cgit.c b/cgit.c
index 19bcd0d..9ea4099 100644
--- a/cgit.c
+++ b/cgit.c
@@ -593,7 +593,7 @@ static int prepare_repo_cmd(void)
 	return 0;
 }
 
-static void process_request(void *cbdata)
+static void process_request(void)
 {
 	struct cgit_cmd *cmd;
 
@@ -957,7 +957,7 @@ int main(int argc, const char **argv)
 	if (ctx.cfg.nocache)
 		ctx.cfg.cache_size = 0;
 	err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
-			    ctx.qry.raw, ttl, process_request, NULL);
+			    ctx.qry.raw, ttl, process_request);
 	cgit_cleanup_filters();
 	if (err)
 		cgit_print_error("Error processing page: %s (%d)",
-- 
1.8.5.2