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// $Id: PI_Malloc.cpp 80826 2008-03-04 14:51:23Z wotte $
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_string.h"
// Listing 1 code/ch17
#include "ace/MMAP_Memory_Pool.h"
#include "ace/Malloc_T.h"
#include "ace/Null_Mutex.h"
#include "ace/PI_Malloc.h"
typedef ACE_Malloc_T <ACE_MMAP_MEMORY_POOL,
ACE_Null_Mutex,
ACE_PI_Control_Block>
ALLOCATOR;
typedef ACE_Malloc_LIFO_Iterator_T<ACE_MMAP_MEMORY_POOL,
ACE_Null_Mutex,
ACE_PI_Control_Block>
MALLOC_LIFO_ITERATOR;
ALLOCATOR *g_allocator;
// Listing 1
// Listing 2 code/ch17
class Record
{
public:
Record (int id1, int id2, char *name)
: id1_(id1), id2_(id2)
{
size_t len = ACE_OS::strlen (name) + 1;
char *buf =
reinterpret_cast<char *> (g_allocator->malloc (len));
ACE_OS::strcpy (buf, name);
name_ = buf;
}
~Record() { g_allocator->free (name_.addr ()); }
char *name (void) { return name_; }
int id1 (void) { return id1_; }
int id2 (void) { return id2_; }
private:
int id1_;
int id2_;
ACE_Based_Pointer_Basic<char> name_;
};
// Listing 2
void showRecords (void)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("The following records were found:\n")));
{
MALLOC_LIFO_ITERATOR iter (*g_allocator);
for (void *temp = 0; iter.next (temp) != 0; iter.advance ())
{
Record *record =
reinterpret_cast<Record *> (temp);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("Record name: %C|id1:%d|id2:%d\n"),
record->name(), record->id1(), record->id2()));
}
}
}
int addRecords (void)
{
char buf[32];
for (int i = 0; i < 10; i++)
{
ACE_OS::sprintf (buf, "%s:%d", "Record", i);
void *memory = g_allocator->malloc (sizeof (Record));
if (memory == 0)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("Unable to malloc")),
-1);
// Allocate and place record
Record* newRecord = new (memory) Record (i, i+1, buf);
if (g_allocator->bind (buf, newRecord) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("bind failed")),
-1);
}
return 0;
}
// Listing 3 code/ch17
// Backing file where the data is kept.
#define BACKING_STORE ACE_TEXT("backing2.store")
int ACE_TMAIN (int argc, ACE_TCHAR *[])
{
if (argc > 1)
{
ACE_MMAP_Memory_Pool_Options options
(ACE_DEFAULT_BASE_ADDR,
ACE_MMAP_Memory_Pool_Options::ALWAYS_FIXED);
ACE_NEW_RETURN (g_allocator,
ALLOCATOR (BACKING_STORE,
BACKING_STORE,
&options),
-1);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("Mapped to base address %@\n"),
g_allocator->base_addr ()));
showRecords ();
}
else
{
ACE_MMAP_Memory_Pool_Options options
(0, ACE_MMAP_Memory_Pool_Options::NEVER_FIXED);
ACE_NEW_RETURN (g_allocator,
ALLOCATOR (BACKING_STORE,
BACKING_STORE,
&options),
-1);
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("Mapped to base address %@\n"),
g_allocator->base_addr ()));
addRecords();
}
g_allocator->sync ();
delete g_allocator;
return 0;
}
// Listing 3
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