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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. Note that each thread of control has its
// own unique TSS object.
//
// = AUTHOR
// Detlef Becker
//
// ============================================================================
#include "ace/Service_Config.h"
#include "ace/Synch.h"
#include "ace/Task.h"
#if defined (ACE_HAS_THREADS)
// (Sun C++ 4.2 with -O3 won't link if the following is not const.)
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...
// (Sun C++ 4.2 with -O3 won't link if the following is 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 */
// Keeps track of whether Tester::close () has started.
// (Sun C++ 4.2 with -O3 won't link if the following is static.)
int close_started = 0;
template <ACE_SYNCH_1>
class Tester: public ACE_Task<ACE_SYNCH_2>
{
public:
Tester (void) {}
~Tester (void) {}
virtual int svc (void);
virtual int open (void *args = 0);
// Activate the thread.
virtual int close (u_long args = 0);
};
template <ACE_SYNCH_1> int
Tester<ACE_SYNCH_2>::svc (void)
{
ACE_DEBUG ((LM_DEBUG, "(%t) svc: setting error code to 1\n"));
TSS_Error->error (1);
for (int i = 0; i < iterations; i++)
// Print out every tenth iteration.
if ((i % 10) == 1)
ACE_DEBUG ((LM_DEBUG, "(%t) error = %d\n", TSS_Error->error ()));
this->close ();
return 0;
}
template <ACE_SYNCH_1> int
Tester<ACE_SYNCH_2>::open (void *)
{
// Make this an Active Object.
return this->activate ();
}
template <ACE_SYNCH_1>
int Tester<ACE_SYNCH_2>::close (u_long)
{
ACE_DEBUG ((LM_DEBUG, "(%t) close running\n"));
close_started = 1;
ACE_DEBUG ((LM_DEBUG, "(%t) close: setting error code to 7\n"));
TSS_Error->error (7);
ACE_DEBUG ((LM_DEBUG, "(%t) close: error = %d\n", TSS_Error->error ()));
close_started = 0;
return 0;
}
int
main (int, char *[])
{
Tester<ACE_MT_SYNCH> tester;
ACE_DEBUG ((LM_DEBUG, "(%t) main: setting error code to 3\n"));
TSS_Error->error (3);
ACE_DEBUG ((LM_DEBUG, "(%t) main: error = %d\n", TSS_Error->error ()));
// Spawn off a thread and make test an Active Object.
tester.open ();
// Keep looping until <Tester::close> is called.
while (!close_started)
ACE_DEBUG ((LM_DEBUG, "(%t) error = %d\n", TSS_Error->error ()));
ACE_DEBUG ((LM_DEBUG, "(%t) main: setting error code to 4\n"));
TSS_Error->error (4);
ACE_DEBUG ((LM_DEBUG, "(%t) main: error = %d\n", TSS_Error->error ()));
// Keep looping until <Tester::close> finishes.
while (close_started != 0)
ACE_DEBUG ((LM_DEBUG, "(%t) error = %d\n", TSS_Error->error ()));
return 0;
}
#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)
template class ACE_TSS<Errno>;
template class Tester<ACE_MT_SYNCH>;
#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)
#pragma instantiate ACE_TSS<Errno>
#pragma instantiate Tester<ACE_MT_SYNCH>
#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */
#else
int
main (int, char *[])
{
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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