MINOR: threads: Add mechanism to register per-thread init/deinit functions
hap_register_per_thread_init and hap_register_per_thread_deinit functions has
been added to register functions to do, for each thread, respectively, some
initialization and deinitialization. These functions are added in the global
lists per_thread_init_list and per_thread_deinit_list.
These functions are called only when HAProxy is started with more than 1 thread
(global.nbthread > 1).
diff --git a/src/haproxy.c b/src/haproxy.c
index 2cba7a9..a4e62a7 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -244,6 +244,25 @@
void (*fct)();
};
+/* These functions are called for each thread just after the thread creation
+ * and before running the scheduler. They should be used to do per-thread
+ * initializations. They must return 0 if an error occurred. */
+struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
+struct per_thread_init_fct {
+ struct list list;
+ int (*fct)();
+};
+
+/* These functions are called for each thread just after the scheduler loop and
+ * before exiting the thread. They don't return anything and, as for post-deinit
+ * functions, they work in best effort mode as their sole goal is to make
+ * valgrind mostly happy. */
+struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
+struct per_thread_deinit_fct {
+ struct list list;
+ void (*fct)();
+};
+
/*********************************************************************/
/* general purpose functions ***************************************/
/*********************************************************************/
@@ -295,6 +314,34 @@
LIST_ADDQ(&post_deinit_list, &b->list);
}
+/* used to register some initialization functions to call for each thread. */
+void hap_register_per_thread_init(int (*fct)())
+{
+ struct per_thread_init_fct *b;
+
+ b = calloc(1, sizeof(*b));
+ if (!b) {
+ fprintf(stderr, "out of memory\n");
+ exit(1);
+ }
+ b->fct = fct;
+ LIST_ADDQ(&per_thread_init_list, &b->list);
+}
+
+/* used to register some de-initialization functions to call for each thread. */
+void hap_register_per_thread_deinit(void (*fct)())
+{
+ struct per_thread_deinit_fct *b;
+
+ b = calloc(1, sizeof(*b));
+ if (!b) {
+ fprintf(stderr, "out of memory\n");
+ exit(1);
+ }
+ b->fct = fct;
+ LIST_ADDQ(&per_thread_deinit_list, &b->list);
+}
+
static void display_version()
{
printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");