[Tarantool-patches] [PATCH v12 5/8] module_cache: rename calls to ref in module structure

[Cyrill Gorcunov via Tarantool-patches <tarantool-patches@dev.tarantool.org>]

We will use this field not only to count a number of
active calls to the module but to prevent the module
from disappear when it get loaded via "cmod" interface
(will be implemented in next patches).

Same time make it 64 bit long since there might be a
number of such references size_t didn't prevent from
numeric overflow.

Part-of #4642

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
 src/box/module_cache.c | 8 ++++----
 src/box/module_cache.h | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/box/module_cache.c b/src/box/module_cache.c
index 48e55f421..ae874caab 100644
--- a/src/box/module_cache.c
+++ b/src/box/module_cache.c
@@ -214,7 +214,7 @@ module_load(const char *package, const char *package_end)
 	memcpy(module->package, package, package_len);
 	module->package[package_len] = 0;
 	rlist_create(&module->funcs_list);
-	module->calls = 0;
+	module->ref = 0;
 
 	const char *tmpdir = getenv("TMPDIR");
 	if (tmpdir == NULL)
@@ -312,7 +312,7 @@ module_delete(struct module *module)
 static void
 module_gc(struct module *module)
 {
-	if (rlist_empty(&module->funcs_list) && module->calls == 0)
+	if (rlist_empty(&module->funcs_list) && module->ref == 0)
 		module_delete(module);
 }
 
@@ -404,9 +404,9 @@ module_sym_call(struct module_sym *mod_sym, struct port *args,
 	 */
 	struct module *module = mod_sym->module;
 	assert(module != NULL);
-	++module->calls;
+	++module->ref;
 	int rc = mod_sym->addr(&ctx, data, data + data_sz);
-	--module->calls;
+	--module->ref;
 	module_gc(module);
 	region_truncate(region, region_svp);
 
diff --git a/src/box/module_cache.h b/src/box/module_cache.h
index fd789f603..feb1f2266 100644
--- a/src/box/module_cache.h
+++ b/src/box/module_cache.h
@@ -41,9 +41,9 @@ struct module {
 	 */
 	struct rlist funcs_list;
 	/**
-	 * Count of active calls.
+	 * Count of active references to the module.
 	 */
-	size_t calls;
+	int64_t ref;
 	/**
 	 * Module's package name.
 	 */
-- 
2.29.2