C++ (Cpp) pa_flist_new Examples

Example #1

File: memblock.c Project: thewb/mokoiax

pa_mempool* pa_mempool_new(int shared) {
    pa_mempool *p;

    p = pa_xnew(pa_mempool, 1);

    p->mutex = pa_mutex_new(TRUE, TRUE);
    p->semaphore = pa_semaphore_new(0);

    p->block_size = PA_PAGE_ALIGN(PA_MEMPOOL_SLOT_SIZE);
    if (p->block_size < PA_PAGE_SIZE)
        p->block_size = PA_PAGE_SIZE;

    p->n_blocks = PA_MEMPOOL_SLOTS_MAX;

    pa_assert(p->block_size > PA_ALIGN(sizeof(struct mempool_slot)));

    if (pa_shm_create_rw(&p->memory, p->n_blocks * p->block_size, shared, 0700) < 0) {
        pa_xfree(p);
        return NULL;
    }

    memset(&p->stat, 0, sizeof(p->stat));
    pa_atomic_store(&p->n_init, 0);

    PA_LLIST_HEAD_INIT(pa_memimport, p->imports);
    PA_LLIST_HEAD_INIT(pa_memexport, p->exports);

    p->free_slots = pa_flist_new(p->n_blocks*2);

    return p;
}

Example #2

File: memblock.c Project: DryakhlyyZlodey/pulseaudio

pa_mempool* pa_mempool_new(bool shared, size_t size) {
    pa_mempool *p;
    char t1[PA_BYTES_SNPRINT_MAX], t2[PA_BYTES_SNPRINT_MAX];

    p = pa_xnew(pa_mempool, 1);

    p->block_size = PA_PAGE_ALIGN(PA_MEMPOOL_SLOT_SIZE);
    if (p->block_size < PA_PAGE_SIZE)
        p->block_size = PA_PAGE_SIZE;

    if (size <= 0)
        p->n_blocks = PA_MEMPOOL_SLOTS_MAX;
    else {
        p->n_blocks = (unsigned) (size / p->block_size);

        if (p->n_blocks < 2)
            p->n_blocks = 2;
    }

    if (pa_shm_create_rw(&p->memory, p->n_blocks * p->block_size, shared, 0700) < 0) {
        pa_xfree(p);
        return NULL;
    }

    pa_log_debug("Using %s memory pool with %u slots of size %s each, total size is %s, maximum usable slot size is %lu",
                 p->memory.shared ? "shared" : "private",
                 p->n_blocks,
                 pa_bytes_snprint(t1, sizeof(t1), (unsigned) p->block_size),
                 pa_bytes_snprint(t2, sizeof(t2), (unsigned) (p->n_blocks * p->block_size)),
                 (unsigned long) pa_mempool_block_size_max(p));

    memset(&p->stat, 0, sizeof(p->stat));
    pa_atomic_store(&p->n_init, 0);

    PA_LLIST_HEAD_INIT(pa_memimport, p->imports);
    PA_LLIST_HEAD_INIT(pa_memexport, p->exports);

    p->mutex = pa_mutex_new(true, true);
    p->semaphore = pa_semaphore_new(0);

    p->free_slots = pa_flist_new(p->n_blocks);

    return p;
}

Example #3

File: flist-test.c Project: BYSTROSTREL/pulseaudio

int main(int argc, char* argv[]) {
    pa_thread *threads[THREADS_MAX];
    int i;

    flist = pa_flist_new(0);

    for (i = 0; i < THREADS_MAX; i++) {
        threads[i] = pa_thread_new("test", thread_func, pa_sprintf_malloc("Thread #%i", i+1));
        assert(threads[i]);
    }

    pa_msleep(60000);
    quit = 1;

    for (i = 0; i < THREADS_MAX; i++)
        pa_thread_free(threads[i]);

    pa_flist_free(flist, pa_xfree);

    return 0;
}

Example #4

File: memblock.c Project: DryakhlyyZlodey/pulseaudio

/* No lock necessary */
void pa_mempool_vacuum(pa_mempool *p) {
    struct mempool_slot *slot;
    pa_flist *list;

    pa_assert(p);

    list = pa_flist_new(p->n_blocks);

    while ((slot = pa_flist_pop(p->free_slots)))
        while (pa_flist_push(list, slot) < 0)
            ;

    while ((slot = pa_flist_pop(list))) {
        pa_shm_punch(&p->memory, (size_t) ((uint8_t*) slot - (uint8_t*) p->memory.ptr), p->block_size);

        while (pa_flist_push(p->free_slots, slot))
            ;
    }

    pa_flist_free(list, NULL);
}

Example #5

File: memblock.c Project: DryakhlyyZlodey/pulseaudio

void pa_mempool_free(pa_mempool *p) {
    pa_assert(p);

    pa_mutex_lock(p->mutex);

    while (p->imports)
        pa_memimport_free(p->imports);

    while (p->exports)
        pa_memexport_free(p->exports);

    pa_mutex_unlock(p->mutex);

    pa_flist_free(p->free_slots, NULL);

    if (pa_atomic_load(&p->stat.n_allocated) > 0) {

        /* Ouch, somebody is retaining a memory block reference! */

#ifdef DEBUG_REF
        unsigned i;
        pa_flist *list;

        /* Let's try to find at least one of those leaked memory blocks */

        list = pa_flist_new(p->n_blocks);

        for (i = 0; i < (unsigned) pa_atomic_load(&p->n_init); i++) {
            struct mempool_slot *slot;
            pa_memblock *b, *k;

            slot = (struct mempool_slot*) ((uint8_t*) p->memory.ptr + (p->block_size * (size_t) i));
            b = mempool_slot_data(slot);

            while ((k = pa_flist_pop(p->free_slots))) {
                while (pa_flist_push(list, k) < 0)
                    ;

                if (b == k)
                    break;
            }

            if (!k)
                pa_log("REF: Leaked memory block %p", b);

            while ((k = pa_flist_pop(list)))
                while (pa_flist_push(p->free_slots, k) < 0)
                    ;
        }

        pa_flist_free(list, NULL);

#endif

        pa_log_error("Memory pool destroyed but not all memory blocks freed! %u remain.", pa_atomic_load(&p->stat.n_allocated));

/*         PA_DEBUG_TRAP; */
    }

    pa_shm_free(&p->memory);

    pa_mutex_free(p->mutex);
    pa_semaphore_free(p->semaphore);

    pa_xfree(p);
}