glibc/sunrpc/rpc_thread.c

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#include <stdio.h>
#include <bits/libc-lock.h>
#include <rpc/rpc.h>
#include <assert.h>
#include <bits/libc-lock.h>
#include <bits/libc-tsd.h>
#ifdef _RPC_THREAD_SAFE_
/* Variable used in non-threaded applications. */
static struct rpc_thread_variables __libc_tsd_RPC_VARS_mem;
static struct rpc_thread_variables *__libc_tsd_RPC_VARS_data =
&__libc_tsd_RPC_VARS_mem;
/* This is the variable used for the first thread. */
static struct rpc_thread_variables rpc_default;
/*
* Task-variable destructor
*/
void
__rpc_thread_destroy (void)
{
struct rpc_thread_variables *tvp = __rpc_thread_variables();
if (tvp != NULL && tvp != &rpc_default) {
__rpc_thread_svc_cleanup ();
__rpc_thread_clnt_cleanup ();
__rpc_thread_key_cleanup ();
free (tvp->authnone_private_s);
free (tvp->clnt_perr_buf_s);
free (tvp->clntraw_private_s);
free (tvp->svcraw_private_s);
free (tvp->authdes_cache_s);
free (tvp->authdes_lru_s);
free (tvp);
}
}
/*
* Initialize RPC multi-threaded operation
*/
static void
rpc_thread_multi (void)
{
__libc_tsd_set (RPC_VARS, &rpc_default);
}
struct rpc_thread_variables *
__rpc_thread_variables (void)
{
__libc_once_define (static, once);
struct rpc_thread_variables *tvp;
tvp = __libc_tsd_get (RPC_VARS);
if (tvp == NULL) {
__libc_once (once, rpc_thread_multi);
tvp = __libc_tsd_get (RPC_VARS);
if (tvp == NULL) {
tvp = calloc (1, sizeof *tvp);
if (tvp != NULL)
__libc_tsd_set (RPC_VARS, tvp);
else
tvp = __libc_tsd_RPC_VARS_data;
}
}
return tvp;
}
/* Global variables If we're single-threaded, or if this is the first
thread using the variable, use the existing global variable. This
provides backwards compatability for existing applications which
dynamically link against this code. */
#undef svc_fdset
#undef rpc_createerr
#undef svc_pollfd
#undef svc_max_pollfd
fd_set *
__rpc_thread_svc_fdset (void)
{
struct rpc_thread_variables *tvp;
tvp = __rpc_thread_variables ();
if (tvp == &rpc_default)
return &svc_fdset;
return &tvp->svc_fdset_s;
}
struct rpc_createerr *
__rpc_thread_createerr (void)
{
struct rpc_thread_variables *tvp;
tvp = __rpc_thread_variables ();
if (tvp == &rpc_default)
return &rpc_createerr;
return &tvp->rpc_createerr_s;
}
struct pollfd **
__rpc_thread_svc_pollfd (void)
{
struct rpc_thread_variables *tvp;
tvp = __rpc_thread_variables ();
if (tvp == &rpc_default)
return &svc_pollfd;
return &tvp->svc_pollfd_s;
}
int *
__rpc_thread_svc_max_pollfd (void)
{
struct rpc_thread_variables *tvp;
tvp = __rpc_thread_variables ();
if (tvp == &rpc_default)
return &svc_max_pollfd;
return &tvp->svc_max_pollfd_s;
}
#endif /* _RPC_THREAD_SAFE_ */