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core: Replace PA_PAGE_SIZE with pa_page_size()

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PA_PAGE_SIZE using sysconf() may return a negative number

CID 1137925, CID 1137926, CID 1138485

instead of calling sysconf() directly, add function pa_page_size()
which uses the guestimate 4096 in case sysconf(_SC_PAGE_SIZE) fails

using PA_ONCE to only evaluate sysconf() once
This commit is contained in:
Peter Meerwald-Stadler 2016-08-18 01:06:47 +02:00
parent c99efbffd6
commit 45d9030638
10 changed files with 55 additions and 38 deletions
Download patch file Download diff file Expand all files Collapse all files

5
src/pulsecore/memblock.c
View file

@ -828,13 +828,14 @@ static void memblock_replace_import(pa_memblock *b) {
pa_mempool *pa_mempool_new(pa_mem_type_t type, size_t size, bool per_client) {
pa_mempool *p;
char t1[PA_BYTES_SNPRINT_MAX], t2[PA_BYTES_SNPRINT_MAX];
const size_t page_size = pa_page_size();
p = pa_xnew0(pa_mempool, 1);
PA_REFCNT_INIT(p);
p->block_size = PA_PAGE_ALIGN(PA_MEMPOOL_SLOT_SIZE);
if (p->block_size < PA_PAGE_SIZE)
p->block_size = PA_PAGE_SIZE;
if (p->block_size < page_size)
p->block_size = page_size;
if (size <= 0)
p->n_blocks = PA_MEMPOOL_SLOTS_MAX;