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#include "ace/Service_Config.h"
// $Id$
#include "ace/Synch.h"
#if defined (ACE_HAS_THREADS)
// Define a class that will be stored in thread-specific data. Note
// that as far as this class is concerned it's just a regular C++
// class. The ACE_TSS wrapper transparently ensures that
// 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.
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_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, Errno::lock_, -1);
return Errno::flags_;
}
void flags (int f)
{
ACE_GUARD (ACE_Thread_Mutex, ace_mon, Errno::lock_);
Errno::flags_ = f;
}
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 lock;
typedef ACE_TSS_Guard<ACE_Thread_Mutex> GUARD;
#else
// Serializes output via cout.
static ACE_Null_Mutex lock;
typedef ACE_Guard<ACE_Null_Mutex> GUARD;
#endif /* ACE_HAS_THREADS */
static 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 ());
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"));
ip = new int;
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"));
ip = new int;
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 to cout...
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, lock, 0);
cout << "(" << ACE_Thread::self ()
<< ") errno = " << TSS_Error->error ()
<< ", lineno = " << TSS_Error->line ()
<< ", flags = " << TSS_Error->flags ()
<< endl;
}
key = 0;
if (ACE_OS::thr_keycreate (&key, cleanup) == -1)
ACE_ERROR ((LM_ERROR, "(%t) %p\n", "ACE_OS::thr_keycreate"));
ip = new int;
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"));
}
ACE_DEBUG ((LM_DEBUG, "(%t) exiting\n"));
return 0;
}
extern "C" void
handler (int signum)
{
ACE_DEBUG ((LM_DEBUG, "signal = %S\n", signum));
ACE_Service_Config::thr_mgr ()->exit (0);
}
int
main (int argc, char *argv[])
{
// The Service_Config must be the first object defined in main...
ACE_Service_Config daemon (argv[0]);
ACE_Thread_Control tc (ACE_Service_Config::thr_mgr ());
int threads = argc > 1 ? ACE_OS::atoi (argv[1]) : 4;
int count = argc > 2 ? ACE_OS::atoi (argv[2]) : 10000;
// Register a signal handler.
ACE_Sig_Action sa ((ACE_SignalHandler) (handler), SIGINT);
#if defined (ACE_HAS_THREADS)
if (ACE_Service_Config::thr_mgr ()->spawn_n (threads,
ACE_THR_FUNC (&worker),
(void *) count,
THR_BOUND | THR_DETACHED) == -1)
ACE_OS::perror ("ACE_Thread_Manager::spawn_n");
ACE_Service_Config::thr_mgr ()->wait ();
#else
worker ((void *) count);
#endif /* ACE_HAS_THREADS */
return 0;
}
#if defined (ACE_TEMPLATES_REQUIRE_SPECIALIZATION)
template class ACE_TSS<Errno>;
#endif /* ACE_TEMPLATES_REQUIRE_SPECIALIZATION */
#else
int
main (void)
{
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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