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// $Id$
// ============================================================================
//
// = LIBRARY
// tests
//
// = FILENAME
// SV_Shared_Memory_Test.cpp
//
// = DESCRIPTION
// This is a simple test of ACE_SV_Shared_Memory and ACE_Malloc
// using the ACE_Shared_Memory_Pool.
//
// = AUTHOR
// Prashant Jain and Doug Schmidt
//
// ============================================================================
#include "ace/Malloc.h"
#include "test_config.h"
#if defined (ACE_HAS_SYSV_IPC)
// Shared memory allocator (note that this chews up the
// ACE_DEFAULT_SEM_KEY).
static ACE_Malloc<ACE_SHARED_MEMORY_POOL, ACE_SV_Semaphore_Simple> allocator;
const int SEM_KEY_1 = ACE_DEFAULT_SEM_KEY + 1;
const int SEM_KEY_2 = ACE_DEFAULT_SEM_KEY + 2;
const int SHMSZ = 27;
static int
parent (char *shm)
{
ACE_SV_Semaphore_Complex mutex;
ACE_ASSERT (mutex.open (SEM_KEY_1,
ACE_SV_Semaphore_Complex::ACE_CREATE, 0) != -1);
ACE_SV_Semaphore_Complex synch;
ACE_ASSERT (synch.open (SEM_KEY_2,
ACE_SV_Semaphore_Complex::ACE_CREATE, 0) != -1);
char *s = shm;
for (char c = 'a'; c <= 'z'; c++)
*s++ = c;
*s = '\0';
if (mutex.release () == -1)
ACE_ERROR ((LM_ERROR, "(%P) %p", "parent mutex.release"));
else if (synch.acquire () == -1)
ACE_ERROR ((LM_ERROR, "(%P) %p", "parent synch.acquire"));
if (allocator.remove () == -1)
ACE_ERROR ((LM_ERROR, "(%P) %p\n", "parent allocator.remove"));
if (mutex.remove () == -1)
ACE_ERROR ((LM_ERROR, "(%P) %p\n", "parent mutex.remove"));
if (synch.remove () == -1)
ACE_ERROR ((LM_ERROR, "(%P) %p\n", "parent synch.remove"));
return 0;
}
static int
child (char *shm)
{
ACE_SV_Semaphore_Complex mutex;
ACE_ASSERT (mutex.open (SEM_KEY_1,
ACE_SV_Semaphore_Complex::ACE_CREATE, 0) != -1);
ACE_SV_Semaphore_Complex synch;
ACE_ASSERT (synch.open (SEM_KEY_2,
ACE_SV_Semaphore_Complex::ACE_CREATE, 0) != -1);
while (mutex.tryacquire () == -1)
if (errno == EAGAIN)
ACE_DEBUG ((LM_DEBUG, "(%P) spinning in child!\n"));
else
ACE_ERROR_RETURN ((LM_ERROR, "(%P) child mutex.tryacquire"), 1);
char t = 'a';
for (char *s = (char *) shm; *s != '\0'; s++)
{
ACE_ASSERT (t == s[0]);
t++;
}
if (synch.release () == -1)
ACE_ERROR_RETURN ((LM_ERROR, "(%P) child synch.release"), 1);
return 0;
}
#endif /* ACE_HAS_SYSV_IPC */
int
main (int, char * /* argv */[])
{
ACE_START_TEST ("SV_Shared_Memory_Test");
#if defined (ACE_HAS_SYSV_IPC)
char *shm = (char *) allocator.malloc (27);
switch (ACE_OS::fork ())
{
case -1:
ACE_ERROR_RETURN ((LM_ERROR, "(%P) fork failed\n"), -1);
/* NOTREACHED */
case 0:
// Child.
ACE_LOG_MSG->sync ("SV_Shared_Memory_Test.cpp");
child (shm);
break;
default:
parent (shm);
break;
}
#else
ACE_ERROR ((LM_ERROR,
"SYSV IPC is not supported on this platform\n"));
#endif /* ACE_HAS_SYSV_IPC */
ACE_END_TEST;
return 0;
}
#if defined (ACE_TEMPLATES_REQUIRE_SPECIALIZATION)
template class ACE_Malloc<ACE_SHARED_MEMORY_POOL, ACE_SV_Semaphore_Simple>;
#endif /* ACE_TEMPLATES_REQUIRE_SPECIALIZATION */
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