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// $Id$
// ============================================================================
//
// = LIBRARY
// tests
//
// = FILENAME
// TSS_Test.cpp
//
// = DESCRIPTION
// This program tests thread specific storage of data. The ACE_TSS
// wrapper transparently ensures that the objects of this class
// will be placed in thread-specific storage. All calls on
// ACE_TSS::operator->() are delegated to the appropriate method
// in the Errno class.
//
// = AUTHOR
// Prashant Jain and Doug Schmidt
//
// ============================================================================
#include "ace/Service_Config.h"
#include "ace/Synch.h"
#include "test_config.h"
#if defined (ACE_HAS_THREADS)
static const int ITERATIONS = 100;
class Errno
{
public:
int error (void) { return this->errno_; }
void error (int i) { this->errno_ = i; }
int line (void) { return this->lineno_; }
void line (int l) { this->lineno_ = l; }
// Errno::flags_ is a static variable, so we've got to protect it
// with a mutex since it isn't kept in thread-specific storage.
int flags (void) {
ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_Mon, Errno::lock_, -1));
return Errno::flags_;
}
int flags (int f)
{
ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, Errno::lock_, -1));
Errno::flags_ = f;
return 0;
}
private:
// = errno_ and lineno_ will be thread-specific data so they don't
// need a lock.
int errno_;
int lineno_;
static int flags_;
#if defined (ACE_HAS_THREADS)
// flags_ needs a lock.
static ACE_Thread_Mutex lock_;
#endif /* ACE_HAS_THREADS */
};
// Static variables.
ACE_MT (ACE_Thread_Mutex Errno::lock_);
int Errno::flags_;
// This is our thread-specific error handler...
static ACE_TSS<Errno> TSS_Error;
#if defined (ACE_HAS_THREADS)
// Serializes output via cout.
static ACE_Thread_Mutex cout_lock;
typedef ACE_TSS_Guard<ACE_Thread_Mutex> GUARD;
#else
// Serializes output via cout.
static ACE_Null_Mutex cout_lock;
typedef ACE_Guard<ACE_Null_Mutex> GUARD;
#endif /* ACE_HAS_THREADS */
extern "C" void
cleanup (void *ptr)
{
ACE_DEBUG ((LM_DEBUG, "(%t) in cleanup, ptr = %x\n", ptr));
delete ptr;
}
// This worker function is the entry point for each thread.
static void *
worker (void *c)
{
ACE_Thread_Control tc (ACE_Service_Config::thr_mgr ());
ACE_NEW_THREAD;
int count = int (c);
ACE_thread_key_t key = 0;
int *ip = 0;
// Make one key that will be available when the thread exits so that
// we'll have something to cleanup!
if (ACE_OS::thr_keycreate (&key, cleanup) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_keycreate"));
ACE_NEW_RETURN (ip, int, 0);
if (ACE_OS::thr_setspecific (key, (void *) ip) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_setspecific"));
for (int i = 0; i < count; i++)
{
if (ACE_OS::thr_keycreate (&key, cleanup) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_keycreate"));
ACE_NEW_RETURN (ip, int, 0);
ACE_DEBUG ((LM_DEBUG, "(%t) in worker 1, key = %d, ip = %x\n", key, ip));
if (ACE_OS::thr_setspecific (key, (void *) ip) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_setspecific"));
if (ACE_OS::thr_getspecific (key, (void **) &ip) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_setspecific"));
if (ACE_OS::thr_setspecific (key, (void *) 0) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_setspecific"));
delete ip;
if (ACE_OS::thr_keyfree (key) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_keyfree"));
// Cause an error.
ACE_OS::read (ACE_INVALID_HANDLE, 0, 0);
// The following two lines set the thread-specific state.
TSS_Error->error (errno);
TSS_Error->line (__LINE__);
// This sets the static state (note how C++ makes it easy to do
// both).
TSS_Error->flags (count);
{
// Use the guard to serialize access
ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, cout_lock, 0));
ACE_ASSERT (TSS_Error->flags () == ITERATIONS);
}
key = 0;
if (ACE_OS::thr_keycreate (&key, cleanup) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_keycreate"));
ACE_NEW_RETURN (ip, int, 0);
ACE_DEBUG ((LM_DEBUG, "(%t) in worker 2, key = %d, ip = %x\n", key, ip));
if (ACE_OS::thr_setspecific (key, (void *) ip) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_setspecific"));
if (ACE_OS::thr_getspecific (key, (void **) &ip) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_setspecific"));
if (ACE_OS::thr_setspecific (key, (void *) 0) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_setspecific"));
delete ip;
if (ACE_OS::thr_keyfree (key) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_keyfree"));
}
return 0;
}
extern "C" void
handler (int signum)
{
ACE_DEBUG ((LM_DEBUG, "signal = %S\n", signum));
ACE_Service_Config::thr_mgr ()->exit (0);
}
#if defined (ACE_TEMPLATES_REQUIRE_SPECIALIZATION)
template class ACE_TSS<Errno>;
#endif /* ACE_TEMPLATES_REQUIRE_SPECIALIZATION */
#endif /* ACE_HAS_THREADS */
int
main (int, char *argv[])
{
ACE_START_TEST ("TSS_Test");
#if defined (ACE_MT_SAFE)
ACE_Thread_Control tc (ACE_Service_Config::thr_mgr ());
// Register a signal handler.
ACE_Sig_Action sa ((ACE_SignalHandler) handler, SIGINT);
if (ACE_Service_Config::thr_mgr ()->spawn_n (ACE_MAX_THREADS,
ACE_THR_FUNC (&worker),
(void *) ITERATIONS,
THR_BOUND | THR_DETACHED) == -1)
ACE_OS::perror ("ACE_Thread_Manager::spawn_n");
ACE_Service_Config::thr_mgr ()->wait ();
#else
ACE_ERROR ((LM_ERROR,
"threads are not supported on this platform\n"));
#endif /* defined (ACE_MT_SAFE) */
ACE_END_TEST;
return 0;
}
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