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mdbx-test: use SysV semaphores on systems without shared mutexes.

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Change-Id: Icc8bbbb9237917932e360920d613ee7f37a57710
This commit is contained in:
Leonid Yuriev 2019-11-12 15:14:07 +03:00
parent c882f77f54
commit d3e4a4659f
1 changed files with 38 additions and 5 deletions
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43
test/osal-unix.cc
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@ -59,7 +59,15 @@ static __inline __maybe_unused int atomic_decrement(volatile int *p) {
#endif /* C++11 */
#endif /* MDBX_LOCKING == MDBX_LOCKING_POSIX1988 */
#if MDBX_LOCKING != MDBX_LOCKING_SYSV
#if MDBX_LOCKING == MDBX_LOCKING_SYSV
static int ipc;
static pid_t ipc_overlord_pid;
static void ipc_remove(void) {
if (ipc_overlord_pid == getpid())
semctl(ipc, 0, IPC_RMID, nullptr);
}
#else
struct shared_t {
#if MDBX_LOCKING == MDBX_LOCKING_POSIX2001 || \
MDBX_LOCKING == MDBX_LOCKING_POSIX2008
@ -87,7 +95,16 @@ static shared_t *shared;
void osal_wait4barrier(void) {
#if MDBX_LOCKING == MDBX_LOCKING_SYSV
#warning "TODO"
struct sembuf op;
op.sem_num = 0;
op.sem_op = -1;
op.sem_flg = IPC_NOWAIT;
if (semop(ipc, &op, 1))
failure_perror("semop(dec)", errno);
op.sem_op = 0;
op.sem_flg = 0;
if (semop(ipc, &op, 1))
failure_perror("semop(wait)", errno);
#elif MDBX_LOCKING == MDBX_LOCKING_POSIX2001 || \
MDBX_LOCKING == MDBX_LOCKING_POSIX2008
assert(shared != nullptr && shared != MAP_FAILED);
@ -111,7 +128,19 @@ void osal_wait4barrier(void) {
void osal_setup(const std::vector<actor_config> &actors) {
#if MDBX_LOCKING == MDBX_LOCKING_SYSV
#warning "TODO"
if (ipc_overlord_pid)
failure("ipc already created by %ld pid", (long)ipc_overlord_pid);
ipc_overlord_pid = getpid();
ipc = semget(IPC_PRIVATE, actors.size() + 2, IPC_CREAT | SEM_A | SEM_R);
if (ipc < 0)
failure_perror("semget(IPC_PRIVATE, shared_sems)", errno);
if (atexit(ipc_remove))
failure_perror("atexit(ipc_remove)", errno);
if (semctl(ipc, 0, SETVAL, (int)(actors.size() + 1)))
failure_perror("semctl(SETVAL.0, shared_sems)", errno);
for (size_t i = 1; i < actors.size() + 2; ++i)
if (semctl(ipc, i, SETVAL, 1))
failure_perror("semctl(SETVAL.N, shared_sems)", errno);
#else
assert(shared == nullptr);
shared = (shared_t *)mmap(
@ -193,7 +222,8 @@ void osal_setup(const std::vector<actor_config> &actors) {
void osal_broadcast(unsigned id) {
log_trace("osal_broadcast: event %u", id);
#if MDBX_LOCKING == MDBX_LOCKING_SYSV
#warning "TODO"
if (semctl(ipc, id + 1, SETVAL, 0))
failure_perror("semctl(SETVAL)", errno);
#else
assert(shared != nullptr && shared != MAP_FAILED);
if (id >= shared->count)
@ -215,7 +245,10 @@ void osal_broadcast(unsigned id) {
int osal_waitfor(unsigned id) {
log_trace("osal_waitfor: event %u", id);
#if MDBX_LOCKING == MDBX_LOCKING_SYSV
#warning "TODO"
struct sembuf op;
memset(&op, 0, sizeof(op));
op.sem_num = (short)(id + 1);
int rc = semop(ipc, &op, 1) ? errno : MDBX_SUCCESS;
#else
assert(shared != nullptr && shared != MAP_FAILED);
if (id >= shared->count)