test_pipe_cache_alloc_refusals.c File Reference

#include "caches/pixelpipe_cache.h"
#include "system/macros.h"
#include <glib.h>
#include <stdarg.h>
#include <stddef.h>
#include <setjmp.h>
#include <stdint.h>
#include <cmocka.h>
#include "win/main_wrapper.h"

Include dependency graph for test_pipe_cache_alloc_refusals.c:

Go to the source code of this file.

Macros
#define	MIB   ((size_t)1024 * 1024)
#define	CACHE_BYTES   (64 * MIB)
#define	HASH_HELD   0x0A0A0A0A0A0A0A0Aull

Functions
static int	_setup (void **state __attribute__((unused)))
static int	_teardown (void **state __attribute__((unused)))
static void	_granted_allocation_is_not_counted (void **state __attribute__((unused)))
static void	_request_larger_than_the_cache_is_counted_once (void **state __attribute__((unused)))
static void	_budget_spent_by_a_line_in_use_is_counted_once (void **state __attribute__((unused)))
static gpointer	_refuse_on_this_thread (gpointer unused __attribute__((unused)))
static void	_refusal_on_another_thread_is_not_counted_here (void **state __attribute__((unused)))
int	main (int argc, char *argv[])

Macro Definition Documentation

CACHE_BYTES

#define CACHE_BYTES   (64 * MIB)

Definition at line 46 of file test_pipe_cache_alloc_refusals.c.

HASH_HELD

#define HASH_HELD   0x0A0A0A0A0A0A0A0Aull

Definition at line 47 of file test_pipe_cache_alloc_refusals.c.

MIB

#define MIB   ((size_t)1024 * 1024)

The cache counts what it refuses for lack of memory, per thread.

A pixelpipe run that fails returns the same error whether a module failed or the cache refused it a buffer. An export reads dt_pixelpipe_cache_get_alloc_refusals() around the run to tell the two apart, and shows "Out of RAM" on the thumbnail instead of "Processing error". That holds only if every refusal is counted once, nothing else is, and a refusal on another thread is not.

These tests drive the cache alone, without a pipe: the contract is the cache's.

Definition at line 45 of file test_pipe_cache_alloc_refusals.c.

Function Documentation

_budget_spent_by_a_line_in_use_is_counted_once()

static void _budget_spent_by_a_line_in_use_is_counted_once ( void **state   __attribute__(unused) )

static

The budget is spent by a line still in use, so nothing can be evicted to make room.

Definition at line 82 of file test_pipe_cache_alloc_refusals.c.

References dt_dev_pixelpipe_cache_get_writable(), dt_dev_pixelpipe_cache_ref_count_entry(), DT_DEV_PIXELPIPE_CACHE_WRITABLE_CREATED, dt_dev_pixelpipe_cache_wrlock_entry(), dt_pixelpipe_cache_alloc_align_cache_impl(), dt_pixelpipe_cache_get_alloc_refusals(), FALSE, HASH_HELD, MIB, and TRUE.

Referenced by main().

_granted_allocation_is_not_counted()

static void _granted_allocation_is_not_counted ( void **state   __attribute__(unused) )

static

A buffer the cache can give is not a refusal.

Definition at line 61 of file test_pipe_cache_alloc_refusals.c.

References dt_pixelpipe_cache_alloc_align_cache_impl(), dt_pixelpipe_cache_free_align_cache(), dt_pixelpipe_cache_get_alloc_refusals(), and MIB.

Referenced by main().

_refusal_on_another_thread_is_not_counted_here()

static void _refusal_on_another_thread_is_not_counted_here ( void **state   __attribute__(unused) )

static

A refusal is counted on the thread it was refused to, and read there only: an export reading its own run must not see another pipe's.

Definition at line 110 of file test_pipe_cache_alloc_refusals.c.

References _refuse_on_this_thread(), and dt_pixelpipe_cache_get_alloc_refusals().

Referenced by main().

_refuse_on_this_thread()

static gpointer _refuse_on_this_thread ( gpointer unused   __attribute__(unused) )

static

Definition at line 100 of file test_pipe_cache_alloc_refusals.c.

References CACHE_BYTES, dt_pixelpipe_cache_alloc_align_cache_impl(), dt_pixelpipe_cache_get_alloc_refusals(), and IS_NULL_PTR.

Referenced by _refusal_on_another_thread_is_not_counted_here().

_request_larger_than_the_cache_is_counted_once()

static void _request_larger_than_the_cache_is_counted_once ( void **state   __attribute__(unused) )

static

More than the whole cache: the arena has no run that long.

Definition at line 73 of file test_pipe_cache_alloc_refusals.c.

References CACHE_BYTES, dt_pixelpipe_cache_alloc_align_cache_impl(), and dt_pixelpipe_cache_get_alloc_refusals().

Referenced by main().

_setup()

static int _setup ( void **state   __attribute__(unused) )

static

Definition at line 49 of file test_pipe_cache_alloc_refusals.c.

References CACHE_BYTES, dt_dev_pixelpipe_cache_init(), and FALSE.

Referenced by main().

_teardown()

static int _teardown ( void **state   __attribute__(unused) )

static

Definition at line 54 of file test_pipe_cache_alloc_refusals.c.

References dt_dev_pixelpipe_cache_cleanup().

Referenced by main().

main()

int main	(	int	argc,
		char *	argv[]
	)

Todo:

: test if file with replaced ext exists

Todo:

: add a callback to set the bpp without going through the config

Todo:

: have a parameter in command line to get the export presets

Definition at line 121 of file test_pipe_cache_alloc_refusals.c.

References _budget_spent_by_a_line_in_use_is_counted_once(), _granted_allocation_is_not_counted(), _refusal_on_another_thread_is_not_counted_here(), _request_larger_than_the_cache_is_counted_once(), _setup(), and _teardown().