ACE程序员教程-第3章 ACE的内存管理

#include "ace/Shared_Memory_MM.h"

#include "ace/Malloc.h"

#include "ace/Malloc_T.h"

#define DATA_SIZE 100

#define MESSAGE1 "Hiya over there client process"

#define MESSAGE2 "Did you hear me the first time?"

LPCTSTR poolname="My_Pool";

typedef ACE_Malloc Malloc_Allocator;

static void server (void)

{

//Create the memory allocator passing it the shared memory

//pool that you want to use

Malloc_Allocator shm_allocator(poolname);

//Create a message, allocate memory for it and bind it with

//a name so that the client can the find it in the memory

//pool

char* Message1=(char*)shm_allocator.malloc(strlen(MESSAGE1));

ACE_OS::strcpy(Message1,MESSAGE1);

shm_allocator.bind("FirstMessage",Message1);

ACE_DEBUG((LM_DEBUG,"<<%s\n",Message1));

//How about a second message

char* Message2=(char*)shm_allocator.malloc(strlen(MESSAGE2));

ACE_OS::strcpy(Message2,MESSAGE2);

shm_allocator.bind("SecondMessage",Message2);

ACE_DEBUG((LM_DEBUG,"<<%s\n",Message2));

//Set the Server to go to sleep for a while so that the client has

//a chance to do its stuff

ACE_DEBUG((LM_DEBUG,

"Server done writing.. going to sleep zzz..\n\n\n"));

ACE_OS::sleep(2);

//Get rid of all resources allocated by the server. In other

//words get rid of the shared memory pool that had been

//previously allocated

shm_allocator.remove();

}

static void client(void)

{

//Create a memory allocator. Be sure that the client passes

// in the "right" name here so that both the client and the

//server use the same memory pool. We wouldn’t want them to

// BOTH create different underlying pools.

Malloc_Allocator shm_allocator(poolname);

//Get that first message. Notice that the find is looking up the

//memory based on the "name" that was bound to it by the server.

void *Message1;

if(shm_allocator.find("FirstMessage",Message1)==-1)

{

ACE_ERROR((LM_ERROR,

"Client: Problem cant find data that server has sent\n"));

ACE_OS::exit(1);

}

ACE_OS::printf(">>%s\n",(char*) Message1);

ACE_OS::fflush(stdout);

//Lets get that second message now.

void *Message2;

if(shm_allocator.find("SecondMessage",Message2)==-1)

{

ACE_ERROR((LM_ERROR,

"Client: Problem cant find data that server has sent\n"));

ACE_OS::exit(1);

}

ACE_OS::printf(">>%s\n",(char*)Message2);

ACE_OS::fflush(stdout);

ACE_DEBUG((LM_DEBUG,"Client done reading! BYE NOW\n"));

ACE_OS::fflush(stdout);

}

int main (int, char *[])

{

switch (ACE_OS::fork ())

{

case -1:

ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "fork"), 1);

　

case 0:

// Make sure the server starts up first.

ACE_OS::sleep (1);

client ();

break;

　

default:

server ();

break;

}

return 0;

}

typedef ACE_Allocator_Adapter> Allocator;