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/* PipeWire */
/* SPDX-FileCopyrightText: Copyright © 2025 PipeWire authors */
/* SPDX-License-Identifier: MIT */
#include <unistd.h>
#include <pipewire/mem.h>
#include <spa/buffer/buffer.h>
#include "pwtest.h"
PWTEST(mempool_issue4884)
{
/*
* See https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/4884. This
* test checks if the offset is correctly applied when a mapping is reused.
*/
long page_size = sysconf(_SC_PAGESIZE);
pwtest_errno_ok(page_size);
pwtest_int_ge(page_size, 8);
struct pw_mempool *p = pw_mempool_new(NULL);
pwtest_ptr_notnull(p);
struct pw_memblock *b = pw_mempool_alloc(p, PW_MEMBLOCK_FLAG_READWRITE, SPA_DATA_MemFd, 2 * page_size);
pwtest_ptr_notnull(b);
struct pw_memmap *m1 = pw_mempool_map_id(p, b->id, PW_MEMMAP_FLAG_READWRITE, page_size / 2, page_size, NULL);
pwtest_ptr_notnull(m1);
pwtest_ptr_eq(m1->block, b);
struct pw_memmap *m2 = pw_mempool_map_id(p, b->id, PW_MEMMAP_FLAG_READWRITE, 3 * page_size / 2, page_size / 2, NULL);
pwtest_ptr_notnull(m2);
pwtest_ptr_eq(m2->block, b);
pwtest_int_eq(SPA_PTRDIFF(m2->ptr, m1->ptr), page_size);
pw_mempool_destroy(p);
return PWTEST_PASS;
}
PWTEST_SUITE(pw_mempool)
{
pwtest_add(mempool_issue4884, PWTEST_NOARG);
return PWTEST_PASS;
}
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