timer: add hook for allocation functions.

[ccan] / ccan / timer / timer.c

diff --git a/ccan/timer/timer.c b/ccan/timer/timer.c
index 84d7aa1454a24383fd0aff6e635d3bfe1d073cbc..607415620c6223d9620d70606d851c70da00af74 100644 (file)
--- a/ccan/timer/timer.c
+++ b/ccan/timer/timer.c
@@ -11,6 +11,33 @@ struct timer_level {
        struct list_head list[PER_LEVEL];
 };
 
+static void *timer_default_alloc(size_t len, void *arg)
+{
+       return malloc(len);
+}
+
+static void timer_default_free(const void *p, void *arg)
+{
+       free((void *)p);
+}
+
+static void *(*timer_alloc)(size_t, void *) = timer_default_alloc;
+static void (*timer_free)(const void *, void *) = timer_default_free;
+static void *timer_arg;
+
+void timers_set_allocator(void *(*alloc)(size_t len, void *arg),
+                         void (*free)(const void *p, void *arg),
+                         void *arg)
+{
+       if (!alloc)
+               alloc = timer_default_alloc;
+       if (!free)
+               free = timer_default_free;
+       timer_alloc = alloc;
+       timer_free = free;
+       timer_arg = arg;
+}
+
 static uint64_t time_to_grains(struct timemono t)
 {
        return t.ts.tv_sec * ((uint64_t)1000000000 / TIMER_GRANULARITY)
@@ -139,7 +166,7 @@ static void add_level(struct timers *timers, unsigned int level)
        unsigned int i;
        struct list_head from_far;
 
-       l = malloc(sizeof(*l));
+       l = timer_alloc(sizeof(*l), timer_arg);
        if (!l)
                return;
 
@@ -520,5 +547,5 @@ void timers_cleanup(struct timers *timers)
        unsigned int l;
 
        for (l = 0; l < ARRAY_SIZE(timers->level); l++)
-               free(timers->level[l]);
+               timer_free(timers->level[l], timer_arg);
 }