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// $Id: thread_specific.cpp 92052 2010-09-27 14:20:22Z vzykov $
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_unistd.h"
#include "ace/OS_main.h"
#include "ace/Service_Config.h"
#include "ace/Thread_Manager.h"
#include "ace/Signal.h"
#include "ace/Truncate.h"
#include "ace/Log_Msg.h"
#if defined (ACE_HAS_THREADS)
#include "thread_specific.h"
// 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;
// Serializes output via cout.
static ACE_SYNCH_MUTEX printf_lock;
extern "C" void
cleanup (void *ptr)
{
ACE_DEBUG ((LM_DEBUG,
"(%t) in cleanup, ptr = %x\n",
ptr));
delete reinterpret_cast<char *> (ptr);
}
// This worker function is the entry point for each thread.
static void *
worker (void *c)
{
intptr_t count = reinterpret_cast<intptr_t> (c);
ACE_thread_key_t key = ACE_OS::NULL_key;
int *ip = 0;
// Make one key that will be available when the thread exits so that
// we'll have something to cleanup!
if (ACE_Thread::keycreate (&key, cleanup) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::keycreate"));
ACE_NEW_RETURN (ip,
int,
0);
if (ACE_Thread::setspecific (key, (void *) ip) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::setspecific"));
for (intptr_t i = 0; i < count; i++)
{
if (ACE_Thread::keycreate (&key, cleanup) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::keycreate"));
ACE_NEW_RETURN (ip,
int,
0);
ACE_DEBUG ((LM_DEBUG,
"(%t) in worker 1, key = %d, ip = %x\n",
key,
ip));
{
// tmp is workaround for gcc strict aliasing warning.
void *tmp = reinterpret_cast <void *> (ip);
if (ACE_Thread::setspecific (key, tmp) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::setspecific"));
if (ACE_Thread::getspecific (key, &tmp) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::setspecific"));
if (ACE_Thread::setspecific (key, (void *) 0) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::setspecific"));
}
delete ip;
if (ACE_Thread::keyfree (key) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::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 (ACE_Utils::truncate_cast<int> (count));
{
// Use the guard to serialize access to printf...
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, printf_lock, 0);
// Print the thread id portably.
ACE_DEBUG ((LM_DEBUG,
"(%t) errno = %d, lineno = %d, flags = %d\n",
tss_error->error (),
tss_error->line (),
tss_error->flags ()));
}
key = ACE_OS::NULL_key;
if (ACE_Thread::keycreate (&key, cleanup) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::keycreate"));
ACE_NEW_RETURN (ip,
int,
0);
ACE_DEBUG ((LM_DEBUG,
"(%t) in worker 2, key = %d, ip = %x\n",
key,
ip));
{
// Tmp is workaround for GCC strict aliasing warning.
void *tmp (reinterpret_cast <void *> (ip));
if (ACE_Thread::setspecific (key, tmp) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::setspecific"));
if (ACE_Thread::getspecific (key, &tmp) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::setspecific"));
if (ACE_Thread::setspecific (key, (void *) 0) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::setspecific"));
}
delete ip;
if (ACE_Thread::keyfree (key) == -1)
ACE_ERROR ((LM_ERROR,
"(%t) %p\n",
"ACE_Thread::keyfree"));
}
ACE_DEBUG ((LM_DEBUG,
"(%t) exiting\n"));
return 0;
}
extern "C" void
handler (int signum)
{
ACE_DEBUG ((LM_DEBUG,
"signal = %S\n", signum));
ACE_Thread_Manager::instance ()->exit (0);
}
int
ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
// The Service_Config must be the first object defined in main...
ACE_Service_Config daemon (argv[0]);
int threads = argc > 1 ? ACE_OS::atoi (argv[1]) : 4;
intptr_t count = argc > 2 ? ACE_OS::atoi (argv[2]) : 10000;
// Register a signal handler.
ACE_Sig_Action sa ((ACE_SignalHandler) (handler), SIGINT);
ACE_UNUSED_ARG (sa);
#if defined (ACE_HAS_THREADS)
if (ACE_Thread_Manager::instance ()->spawn_n (threads,
ACE_THR_FUNC (&worker),
reinterpret_cast<void *> (count),
THR_BOUND | THR_DETACHED) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"%p\n",
"ACE_Thread_Manager::spawn_n"),
-1);
ACE_Thread_Manager::instance ()->wait ();
#else
worker ((void *) count);
#endif /* ACE_HAS_THREADS */
return 0;
}
#else
int
ACE_TMAIN (int, ACE_TCHAR *[])
{
ACE_ERROR_RETURN ((LM_ERROR,
"ACE doesn't support support threads on this platform (yet)\n"),
-1);
}
#endif /* ACE_HAS_THREADS */
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