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shm: #ifdef conditional code to measure total size of SHM allocations

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Daniel Eklöf 2020-04-18 12:24:40 +02:00
parent 02edee78b2
commit 4f145bed33
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1 changed files with 20 additions and 0 deletions
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shm.c
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@ -53,6 +53,11 @@ static tll(struct buffer) buffers;
static bool can_punch_hole = false;
static bool can_punch_hole_initialized = false;
#undef MEASURE_SHM_ALLOCS
#if defined(MEASURE_SHM_ALLOCS)
static size_t max_alloced = 0;
#endif
void
shm_set_max_pool_size(off_t _max_pool_size)
{
@ -95,6 +100,10 @@ shm_fini(void)
buffer_destroy(&it->item);
tll_remove(buffers, it);
}
#if defined(MEASURE_SHM_ALLOCS) && MEASURE_SHM_ALLOCS
LOG_INFO("max total allocations was: %zu MB", max_alloced / 1024 / 1024);
#endif
}
static void
@ -336,6 +345,17 @@ shm_get_buffer(struct wl_shm *shm, int width, int height, unsigned long cookie,
struct buffer *ret = &tll_back(buffers);
if (!instantiate_offset(shm, ret, initial_offset))
goto err;
#if defined(MEASURE_SHM_ALLOCS) && MEASURE_SHM_ALLOCS
{
size_t currently_alloced = 0;
tll_foreach(buffers, it)
currently_alloced += it->item.size;
if (currently_alloced > max_alloced)
max_alloced = currently_alloced;
}
#endif
return ret;
err: