*: s/void */til_setup_t */

This brings something resembling an actual type to the private
objects returrned in *res_setup.  Internally libtil/rototiller
wants this to be a til_setup_t, and it's up to the private users
of what's returned in *res_setup to embed this appropriately and
either use container_of() or casting when simply embedded at the
start to go between til_setup_t and their private containing
struct.

Everywhere *res_setup was previously allocated using calloc() is
now using til_setup_new() with a free_func, which til_setup_new()
will initialize appropriately.  There's still some remaining work
to do with the supplied free_func in some modules, where free()
isn't quite appropriate.

Setup freeing isn't actually being performed yet, but this sets
the foundation for that to happen in a subsequent commit that
cleans up the setup leaks.

Many modules use a static default setup for when no setup has
been provided.  In those cases, the free_func would be NULL,
which til_setup_new() refuses to do.  When setup freeing actually
starts happening, it'll simply skip freeing when
til_setup_t.free_func is NULL.

1 files changed, 6 insertions, 5 deletions

diff --git a/src/modules/drizzle/drizzle.c b/src/modules/drizzle/drizzle.c
index d3d3c3e..2fa3b75 100644
--- a/src/modules/drizzle/drizzle.c
+++ b/src/modules/drizzle/drizzle.c
@@ -36,6 +36,7 @@ typedef struct v2f_t {
 } v2f_t;
 
 typedef struct drizzle_setup_t {
+	til_setup_t	til_setup;
 	float		viscosity;
 } drizzle_setup_t;
 
@@ -72,12 +73,12 @@ static inline uint32_t color_to_uint32(v3f_t color) {
 }
 
 
-static void * drizzle_create_context(unsigned ticks, unsigned num_cpus, void *setup)
+static void * drizzle_create_context(unsigned ticks, unsigned num_cpus, til_setup_t *setup)
 {
 	drizzle_context_t	*ctxt;
 
 	if (!setup)
-		setup = &drizzle_default_setup;
+		setup = &drizzle_default_setup.til_setup;
 
 	ctxt = calloc(1, sizeof(drizzle_context_t));
 	if (!ctxt)
@@ -165,7 +166,7 @@ static void drizzle_render_fragment(void *context, unsigned ticks, unsigned cpu,
 }
 
 
-static int drizzle_setup(const til_settings_t *settings, til_setting_t **res_setting, const til_setting_desc_t **res_desc, void **res_setup)
+static int drizzle_setup(const til_settings_t *settings, til_setting_t **res_setting, const til_setting_desc_t **res_desc, til_setup_t **res_setup)
 {
 	const char	*viscosity;
 	const char	*values[] = {
@@ -195,13 +196,13 @@ static int drizzle_setup(const til_settings_t *settings, til_setting_t **res_set
 	if (res_setup) {
 		drizzle_setup_t	*setup;
 
-		setup = calloc(1, sizeof(*setup));
+		setup = til_setup_new(sizeof(*setup), (void(*)(til_setup_t *))free);
 		if (!setup)
 			return -ENOMEM;
 
 		sscanf(viscosity, "%f", &setup->viscosity);
 
-		*res_setup = setup;
+		*res_setup = &setup->til_setup;
 	}
 
 	return 0;