mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2026-05-28 22:58:13 +02:00
74bf7aa07c
We don't have any locking issues yet because we use the pool size itself as
a mutex in block_pool_alloc to guarantee that only one thread is resizing
at a time. However, we are about to add support for growing the block pool
at both ends. This introduces two potential races:
1) You could have two block_pool_alloc() calls that both try to grow the
block pool, one from each end.
2) The relocation handling code will now have to think about not only the
bo that we use for the block pool but also the offset from the start of
that bo to the center of the block pool. It's possible that the block
pool growing code could race with the relocation handling code and get
a bo and offset out of sync.
Grabbing the device mutex solves both of these problems. Thanks to (2), we
can't really do anything more granular.
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/*
|
|
* Copyright © 2015 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <pthread.h>
|
|
|
|
#include "anv_private.h"
|
|
|
|
#define NUM_THREADS 8
|
|
#define STATES_PER_THREAD_LOG2 10
|
|
#define STATES_PER_THREAD (1 << STATES_PER_THREAD_LOG2)
|
|
#define NUM_RUNS 64
|
|
|
|
#include "state_pool_test_helper.h"
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct anv_device device;
|
|
struct anv_block_pool block_pool;
|
|
struct anv_state_pool state_pool;
|
|
|
|
pthread_mutex_init(&device.mutex, NULL);
|
|
|
|
for (unsigned i = 0; i < NUM_RUNS; i++) {
|
|
anv_block_pool_init(&block_pool, &device, 256);
|
|
anv_state_pool_init(&state_pool, &block_pool);
|
|
|
|
/* Grab one so a zero offset is impossible */
|
|
anv_state_pool_alloc(&state_pool, 16, 16);
|
|
|
|
run_state_pool_test(&state_pool);
|
|
|
|
anv_state_pool_finish(&state_pool);
|
|
anv_block_pool_finish(&block_pool);
|
|
}
|
|
|
|
pthread_mutex_destroy(&device.mutex);
|
|
}
|