int
sslMutex_Lock(sslMutex *pMutex)
{
HANDLE hMutex;
DWORD event;
DWORD lastError;
SECStatus rv;
SECStatus retvalue = SECSuccess;
PR_ASSERT(pMutex != 0);
if (PR_FALSE == pMutex->isMultiProcess) {
return single_process_sslMutex_Lock(pMutex);
}
#ifdef WINNT
/* lock first to preserve from other threads/fibers
in the same process */
retvalue = single_process_sslMutex_Lock(pMutex);
#endif
PR_ASSERT(pMutex->u.sslMutx != 0 &&
pMutex->u.sslMutx != INVALID_HANDLE_VALUE);
if (!pMutex || (hMutex = pMutex->u.sslMutx) == 0 ||
hMutex == INVALID_HANDLE_VALUE) {
PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
return SECFailure; /* what else ? */
}
/* acquire the mutex to be the only owner accross all other processes */
event = WaitForSingleObject(hMutex, INFINITE);
switch (event) {
case WAIT_OBJECT_0:
case WAIT_ABANDONED:
rv = SECSuccess;
break;
case WAIT_TIMEOUT:
#if defined(WAIT_IO_COMPLETION)
case WAIT_IO_COMPLETION:
#endif
default: /* should never happen. nothing we can do. */
PR_ASSERT(!("WaitForSingleObject returned invalid value."));
PORT_SetError(PR_UNKNOWN_ERROR);
rv = SECFailure;
break;
case WAIT_FAILED: /* failure returns this */
rv = SECFailure;
lastError = GetLastError(); /* for debugging */
nss_MD_win32_map_default_error(lastError);
break;
}
if (! (SECSuccess == retvalue && SECSuccess == rv)) {
return SECFailure;
}
return SECSuccess;
}
int
sslMutex_Lock(sslMutex *pMutex)
{
HANDLE hMutex;
DWORD event;
DWORD lastError;
SECStatus rv;
SECStatus retvalue = SECSuccess;
PR_ASSERT(pMutex != 0);
if (PR_FALSE == pMutex->isMultiProcess) {
return single_process_sslMutex_Lock(pMutex);
}
#ifdef WINNT
retvalue = single_process_sslMutex_Lock(pMutex);
#endif
PR_ASSERT(pMutex->u.sslMutx != 0 &&
pMutex->u.sslMutx != INVALID_HANDLE_VALUE);
if (!pMutex || (hMutex = pMutex->u.sslMutx) == 0 ||
hMutex == INVALID_HANDLE_VALUE) {
PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
return SECFailure;
}
event = WaitForSingleObject(hMutex, INFINITE);
switch (event) {
case WAIT_OBJECT_0:
case WAIT_ABANDONED:
rv = SECSuccess;
break;
case WAIT_TIMEOUT:
#if defined(WAIT_IO_COMPLETION)
case WAIT_IO_COMPLETION:
#endif
default:
PR_ASSERT(!("WaitForSingleObject returned invalid value."));
PORT_SetError(PR_UNKNOWN_ERROR);
rv = SECFailure;
break;
case WAIT_FAILED:
rv = SECFailure;
lastError = GetLastError();
nss_MD_win32_map_default_error(lastError);
break;
}
if (! (SECSuccess == retvalue && SECSuccess == rv)) {
return SECFailure;
}
return SECSuccess;
}
SECStatus
sslMutex_Lock(sslMutex *pMutex)
{
int cc;
char c;
if (PR_FALSE == pMutex->isMultiProcess) {
return single_process_sslMutex_Lock(pMutex);
}
if (pMutex->u.pipeStr.mPipes[2] != SSL_MUTEX_MAGIC) {
PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
return SECFailure;
}
do {
cc = read(pMutex->u.pipeStr.mPipes[0], &c, 1);
} while (cc < 0 && errno == EINTR);
if (cc != 1) {
if (cc < 0)
nss_MD_unix_map_default_error(errno);
else
PORT_SetError(PR_UNKNOWN_ERROR);
return SECFailure;
}
return SECSuccess;
}
SECStatus
sslMutex_Lock(sslMutex *pMutex)
{
PRInt32 newValue;
if (PR_FALSE == pMutex->isMultiProcess) {
return single_process_sslMutex_Lock(pMutex);
}
if (pMutex->u.pipeStr.mPipes[2] != SSL_MUTEX_MAGIC) {
PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
return SECFailure;
}
newValue = PR_ATOMIC_INCREMENT(&pMutex->u.pipeStr.nWaiters);
/* Do Memory Barrier here. */
if (newValue > 1) {
int cc;
char c;
do {
cc = read(pMutex->u.pipeStr.mPipes[0], &c, 1);
} while (cc < 0 && errno == EINTR);
if (cc != 1) {
if (cc < 0)
nss_MD_unix_map_default_error(errno);
else
PORT_SetError(PR_UNKNOWN_ERROR);
return SECFailure;
}
}
return SECSuccess;
}
SECStatus
sslMutex_Lock(sslMutex *pMutex)
{
PR_ASSERT(pMutex);
if (PR_FALSE == pMutex->isMultiProcess) {
return single_process_sslMutex_Lock(pMutex);
}
PORT_Assert(!("sslMutex_Lock not implemented for multi-process applications !"));
PORT_SetError(PR_NOT_IMPLEMENTED_ERROR);
return SECFailure;
}
SECStatus
sslMutex_Lock(sslMutex *pMutex)
{
int rv;
if (PR_FALSE == pMutex->isMultiProcess) {
return single_process_sslMutex_Lock(pMutex);
}
do {
rv = sem_wait(&pMutex->u.sem);
} while (rv < 0 && errno == EINTR);
if (rv < 0) {
nss_MD_unix_map_default_error(errno);
return SECFailure;
}
return SECSuccess;
}
