til: pass module to .context_create()/til_module_context_new()

Let's make it so til_module_context_t as returned from
til_module_context_new() can immediately be freed via
til_module_context_free().

Previously it was only after the context propagated out to
til_module_context_create() that it could be freed that way, as
that was where the module member was being assigned.

With this change, and wiring up the module pointer into
til_module_t.create_context() as well for convenient providing to
til_module_context_new(), til_module_t.create_context() error
paths can easily cleanup via `return til_module_context_free()`

But this does require the til_module_t.destroy_context() be able
to safely handle partially constructed contexts, since the
mid-create failure freeing won't necessarily have all the members
initialized.  There will probably be some NULL derefs to fix up,
but at least the contexts are zero-initialized @ new.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/modules/snow/snow.c b/src/modules/snow/snow.c
index bcf1cc4..8ba0929 100644
--- a/src/modules/snow/snow.c
+++ b/src/modules/snow/snow.c
@@ -22,11 +22,11 @@ typedef struct snow_context_t {
 } snow_context_t;
 
 
-static til_module_context_t * snow_create_context(til_stream_t *stream, unsigned seed, unsigned ticks, unsigned n_cpus, char *path, til_setup_t *setup)
+static til_module_context_t * snow_create_context(const til_module_t *module, til_stream_t *stream, unsigned seed, unsigned ticks, unsigned n_cpus, char *path, til_setup_t *setup)
 {
 	snow_context_t	*ctxt;
 
-	ctxt = til_module_context_new(stream, sizeof(snow_context_t) + n_cpus * sizeof(snow_seed_t), seed, ticks, n_cpus, path);
+	ctxt = til_module_context_new(module, sizeof(snow_context_t) + n_cpus * sizeof(snow_seed_t), stream, seed, ticks, n_cpus, path);
 	if (!ctxt)
 		return NULL;