void pa_core_maybe_vacuum(pa_core *c) {
pa_assert(c);
if (pa_idxset_isempty(c->sink_inputs) && pa_idxset_isempty(c->source_outputs)) {
pa_log_debug("Hmm, no streams around, trying to vacuum.");
} else {
pa_sink *si;
pa_source *so;
uint32_t idx;
idx = 0;
PA_IDXSET_FOREACH(si, c->sinks, idx)
if (pa_sink_get_state(si) != PA_SINK_SUSPENDED)
return;
idx = 0;
PA_IDXSET_FOREACH(so, c->sources, idx)
if (pa_source_get_state(so) != PA_SOURCE_SUSPENDED)
return;
pa_log_info("All sinks and sources are suspended, vacuuming memory");
}
pa_mempool_vacuum(c->mempool);
if (c->rw_mempool)
pa_mempool_vacuum(c->rw_mempool);
}
int main(int argc, char *argv[]) {
pa_mempool *pool_a, *pool_b, *pool_c;
unsigned id_a, id_b, id_c;
pa_memexport *export_a, *export_b;
pa_memimport *import_b, *import_c;
pa_memblock *mb_a, *mb_b, *mb_c;
int r, i;
pa_memblock* blocks[5];
uint32_t id, shm_id;
size_t offset, size;
char *x;
const char txt[] = "This is a test!";
pool_a = pa_mempool_new(1);
pool_b = pa_mempool_new(1);
pool_c = pa_mempool_new(1);
pa_mempool_get_shm_id(pool_a, &id_a);
pa_mempool_get_shm_id(pool_b, &id_b);
pa_mempool_get_shm_id(pool_c, &id_c);
pa_assert(pool_a && pool_b && pool_c);
blocks[0] = pa_memblock_new_fixed(pool_a, (void*) txt, sizeof(txt), 1);
blocks[1] = pa_memblock_new(pool_a, sizeof(txt));
x = pa_memblock_acquire(blocks[1]);
snprintf(x, pa_memblock_get_length(blocks[1]), "%s", txt);
pa_memblock_release(blocks[1]);
blocks[2] = pa_memblock_new_pool(pool_a, sizeof(txt));
x = pa_memblock_acquire(blocks[2]);
snprintf(x, pa_memblock_get_length(blocks[2]), "%s", txt);
pa_memblock_release(blocks[2]);
blocks[3] = pa_memblock_new_malloced(pool_a, pa_xstrdup(txt), sizeof(txt));
blocks[4] = NULL;
for (i = 0; blocks[i]; i++) {
printf("Memory block %u\n", i);
mb_a = blocks[i];
pa_assert(mb_a);
export_a = pa_memexport_new(pool_a, revoke_cb, (void*) "A");
export_b = pa_memexport_new(pool_b, revoke_cb, (void*) "B");
pa_assert(export_a && export_b);
import_b = pa_memimport_new(pool_b, release_cb, (void*) "B");
import_c = pa_memimport_new(pool_c, release_cb, (void*) "C");
pa_assert(import_b && import_c);
r = pa_memexport_put(export_a, mb_a, &id, &shm_id, &offset, &size);
pa_assert(r >= 0);
pa_assert(shm_id == id_a);
printf("A: Memory block exported as %u\n", id);
mb_b = pa_memimport_get(import_b, id, shm_id, offset, size);
pa_assert(mb_b);
r = pa_memexport_put(export_b, mb_b, &id, &shm_id, &offset, &size);
pa_assert(r >= 0);
pa_assert(shm_id == id_a || shm_id == id_b);
pa_memblock_unref(mb_b);
printf("B: Memory block exported as %u\n", id);
mb_c = pa_memimport_get(import_c, id, shm_id, offset, size);
pa_assert(mb_c);
x = pa_memblock_acquire(mb_c);
printf("1 data=%s\n", x);
pa_memblock_release(mb_c);
print_stats(pool_a, "A");
print_stats(pool_b, "B");
print_stats(pool_c, "C");
pa_memexport_free(export_b);
x = pa_memblock_acquire(mb_c);
printf("2 data=%s\n", x);
pa_memblock_release(mb_c);
pa_memblock_unref(mb_c);
pa_memimport_free(import_b);
pa_memblock_unref(mb_a);
pa_memimport_free(import_c);
pa_memexport_free(export_a);
}
printf("vaccuuming...\n");
pa_mempool_vacuum(pool_a);
pa_mempool_vacuum(pool_b);
pa_mempool_vacuum(pool_c);
printf("vaccuuming done...\n");
pa_mempool_free(pool_a);
pa_mempool_free(pool_b);
pa_mempool_free(pool_c);
return 0;
}