rdwr_test_bench.c File Reference

#include "ut/ut.h"
#include "lib/misc.h"
#include "lib/memory.h"
#include "lib/mutex.h"
#include "reqh/reqh.h"
#include "fop/fom_long_lock.h"

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Data Structures
struct	test_min_max
struct	test_request

Enumerations
enum	tb_request_type { RQ_READ, RQ_WRITE, RQ_WAKE_UP, RQ_LAST }
enum	tb_request_phase { PH_REQ_LOCK = M0_FOM_PHASE_INIT, PH_GOT_LOCK = M0_FOPH_NR + 1 }

Functions
	M0_TL_DESCR_DECLARE (m0_lll, M0_EXTERN)
	M0_TL_DECLARE (m0_lll, M0_INTERNAL, struct m0_long_lock_link)
static bool	readers_check (struct m0_long_lock *lock)
static bool	writer_check (struct m0_long_lock *lock)
static bool	lock_check (struct m0_long_lock *lock, enum tb_request_type type, size_t owners_min, size_t owners_max, size_t waiters)
static int	fom_rdwr_tick (struct m0_fom *fom)
static void	reqh_fop_handle (struct m0_reqh *reqh, struct m0_fom *fom)
static void	test_req_handle (struct m0_reqh *reqh, struct test_request *rq, int seqn)
static void	rdwr_send_fop (struct m0_reqh **reqh, size_t reqh_nr)

Variables
static struct m0_fom *	sleeper
static struct m0_chan	chan [RDWR_REQUEST_MAX]
static struct m0_clink	clink [RDWR_REQUEST_MAX]
static struct m0_long_lock	long_lock
static struct test_request	test [3][RDWR_REQUEST_MAX]

Enumeration Type Documentation

tb_request_phase

enum tb_request_phase

Enumerator
PH_REQ_LOCK
PH_GOT_LOCK

Definition at line 39 of file rdwr_test_bench.c.

tb_request_type

enum tb_request_type

Enumerator
RQ_READ
RQ_WRITE
RQ_WAKE_UP
RQ_LAST

Definition at line 32 of file rdwr_test_bench.c.

Function Documentation

fom_rdwr_tick()

static int fom_rdwr_tick ( struct m0_fom *  fom )

static

Definition at line 133 of file rdwr_test_bench.c.

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lock_check()

static bool lock_check ( struct m0_long_lock *  lock, enum tb_request_type  type, size_t  owners_min, size_t  owners_max, size_t  waiters  )

static

Checks expected readers and writers against actual.

Definition at line 112 of file rdwr_test_bench.c.

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M0_TL_DECLARE()

M0_TL_DECLARE	(	m0_lll	,
		M0_INTERNAL	,
		struct m0_long_lock_link
	)

M0_TL_DESCR_DECLARE()

M0_TL_DESCR_DECLARE	(	m0_lll	,
		M0_EXTERN
	)

rdwr_send_fop()

static void rdwr_send_fop ( struct m0_reqh **  reqh, size_t  reqh_nr  )

static

Definition at line 296 of file rdwr_test_bench.c.

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readers_check()

static bool readers_check ( struct m0_long_lock *  lock )

static

a. Checks that multiple readers can hold the read lock concurrently, but writers (more than one) get blocked.

Definition at line 71 of file rdwr_test_bench.c.

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reqh_fop_handle()

static void reqh_fop_handle ( struct m0_reqh *  reqh, struct m0_fom *  fom  )

static

Definition at line 220 of file rdwr_test_bench.c.

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test_req_handle()

static void test_req_handle ( struct m0_reqh *  reqh, struct test_request *  rq, int  seqn  )

static

Definition at line 229 of file rdwr_test_bench.c.

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writer_check()

static bool writer_check ( struct m0_long_lock *  lock )

static

b. Only one writer at a time can hold the write lock. All other contenders wait.

Definition at line 92 of file rdwr_test_bench.c.

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Variable Documentation

chan

struct m0_chan chan[RDWR_REQUEST_MAX]

static

Definition at line 63 of file rdwr_test_bench.c.

clink

struct m0_clink clink[RDWR_REQUEST_MAX]

static

Definition at line 64 of file rdwr_test_bench.c.

long_lock

struct m0_long_lock long_lock

static

Definition at line 65 of file rdwr_test_bench.c.

sleeper

struct m0_fom* sleeper

static

Definition at line 62 of file rdwr_test_bench.c.

test

struct test_request test[3][RDWR_REQUEST_MAX]

static

Definition at line 249 of file rdwr_test_bench.c.