C++ AllocVec函数代码示例

// Open a buffered file
APTR LIBFUNC L_OpenBuf(
    REG(a0, char *name),
    REG(d0, long mode),
    REG(d1, long buffer_size))
{
    BufFile *file;

    // Allocate file handle
    if (!(file=AllocVec(sizeof(BufFile),MEMF_CLEAR)))
        return 0;

    // Open file
    if (!(file->file=Open(name,mode)))
    {
        FreeVec(file);
        return 0;
    }

    // Store DOS pointer
    file->dos=DOSBase;

    // Allocate buffer
    if (buffer_size>0)
    {
        if ((file->buffer=AllocVec(buffer_size,0)))
            file->buffer_size=buffer_size;
    }

    return file;
}

void schedule(int t, void (*callback)(void *p), void *p)
{
	struct nscallback *nscb;
	struct TimeVal tv;
	ULONG time_us = 0;

	if(schedule_list == NULL) return;

	nscb = AllocVec(sizeof(struct nscallback), MEMF_PRIVATE | MEMF_CLEAR);
	if(!nscb) return;

	time_us = t*10000; /* t converted to µs */

	nscb->tv.Seconds = time_us / 1000000;
	nscb->tv.Microseconds = time_us % 1000000;

	GetSysTime(&tv);
	AddTime(&nscb->tv,&tv); // now contains time when event occurs

	if(nscb->treq = AllocVec(sizeof(struct TimeRequest),MEMF_PRIVATE | MEMF_CLEAR))
	{
		*nscb->treq = *tioreq;
    	nscb->treq->Request.io_Command=TR_ADDREQUEST;
    	nscb->treq->Time.Seconds=nscb->tv.Seconds; // secs
    	nscb->treq->Time.Microseconds=nscb->tv.Microseconds; // micro
    	SendIO((struct IORequest *)nscb->treq);
	}

	nscb->callback = callback;
	nscb->p = p;

	pblHeapInsert(schedule_list, nscb);
}

static bool URLHistoryFound(const char *url, const struct url_data *data)
{
	struct Node *node;

	/* skip this URL if it is already in the list */
	if(URLHistory_FindPage(url)) return true;

	node = AllocVec( sizeof( struct Node ), MEMF_SHARED|MEMF_CLEAR );

	if ( node )
	{
		STRPTR urladd = (STRPTR) AllocVec( strlen ( url ) + 1, MEMF_SHARED|MEMF_CLEAR );
		if ( urladd )
		{
			strcpy(urladd, url);
			node->ln_Name = urladd;
			AddTail( &PageList, node );
		}
		else
		{
			FreeVec(node);
		}
	}
	return true;
}

HOOKPROTONHNO(TreeView_ConstructHookFunction, APTR, struct MUIP_NListtree_ConstructMessage *ncm) {
  DebOut("ncm: %lx\n", ncm);

  struct TreeLine *line=(struct TreeLine *) AllocVec(sizeof(struct TreeLine), 0);

  TVINSERTSTRUCT *is=(TVINSERTSTRUCT *) ncm->UserData;
  DebOut("is: %lx\n", is);
  DebOut("ncm->name: %s\n", ncm->Name);

  if(line && is) {
    line->config=(struct ConfigStruct *) AllocVec(sizeof(struct ConfigStruct), 0);

    if(is->itemex.pszText) {
      DebOut("is->itemex.pszText: %s\n", is->itemex.pszText);
      strncpy(line->name, is->itemex.pszText, MAX_DPATH-1);
    }

    if(is->itemex.lParam) {
      memcpy((void *) line->config, (const  void *) is->itemex.lParam, sizeof(struct ConfigStruct));
    }
  }
  else {
    DebOut("NOT ENOUGH MEMORY!\n");
  }

  DebOut("return: %lx\n", line);

  return line;
}

/* Parse a line for a template. Result should be freed via
   FreeTemplate() */
APTR ParseTemplate(CONST_STRPTR temp, STRPTR line, APTR results)
{
	ULONG *mem = (ULONG*)AllocVec(12,0);
	if(mem)
	{
		struct RDArgs *rdargs = (struct RDArgs*)AllocDosObject(DOS_RDARGS,NULL);
		if((mem[0] = (ULONG)rdargs))
		{
			LONG len = mystrlen(line)+2;
			STRPTR buf = (STRPTR)AllocVec(len,0);

			if((mem[1] = (ULONG)buf))
			{
				struct RDArgs *rd;

				if (line) strcpy(buf,line);
				buf[len-2]=10;
				buf[len-1]=0;

				rdargs->RDA_Buffer = NULL;
				rdargs->RDA_Source.CS_Buffer = (UBYTE *)buf;
				rdargs->RDA_Source.CS_Length = strlen(buf);
				rdargs->RDA_Source.CS_CurChr = 0;

				rd = ReadArgs(temp,(LONG*)results, rdargs );
				if((mem[2] = (ULONG)rd))
				{
					return mem;
				}
			}
		}
	}
	FreeTemplate(mem);
	return NULL;
}

  FT_New_Memory( void )
  {
    FT_Memory  memory;


#ifdef __amigaos4__
    memory = (FT_Memory)AllocVec( sizeof ( *memory ), MEMF_SHARED );
#else
    memory = (FT_Memory)AllocVec( sizeof ( *memory ), MEMF_PUBLIC );
#endif
    if ( memory )
    {
#ifdef __amigaos4__
      memory->user = CreatePool( MEMF_SHARED, 16384, 16384 );
#else
      memory->user = CreatePool( MEMF_PUBLIC, 16384, 16384 );
#endif
      if ( memory->user == NULL )
      {
        FreeVec( memory );
        memory = NULL;
      }
      else
      {
        memory->alloc   = ft_alloc;
        memory->realloc = ft_realloc;
        memory->free    = ft_free;
#ifdef FT_DEBUG_MEMORY
        ft_mem_debug_init( memory );
#endif
      }
    }

    return memory;
  }

static struct sw_displaytarget *
HiddVC4CreateDisplaytarget(struct sw_winsys *winsys, unsigned tex_usage,
    enum pipe_format format, unsigned width, unsigned height,
    unsigned alignment, unsigned *stride)
{
    struct HiddVC4Displaytarget * spdt = 
        AllocVec(sizeof(struct HiddVC4Displaytarget), MEMF_PUBLIC | MEMF_CLEAR);
    
    *stride = align(util_format_get_stride(format, width), alignment);
    spdt->data = AllocVec(*stride * height, MEMF_PUBLIC | MEMF_CLEAR);
    
    return (struct sw_displaytarget *)spdt;
}

struct List *GetModes(struct AHIUnitPrefs *prefs) {
  struct List *list;

  list = AllocVec(sizeof(struct List), MEMF_CLEAR);
  
  if(list) {
    ULONG id = AHI_NextAudioID(AHI_INVALID_ID);

    NewList(list);

    while(id != AHI_INVALID_ID) {
      struct ModeNode *t;
      struct Node     *node;
      
      t = AllocVec( sizeof(struct ModeNode), MEMF_CLEAR);

      if( t != NULL ) {
        LONG realtime;

        t->node.ln_Name = t->name;
        t->ID = id;
        
        realtime = FALSE;
        
        AHI_GetAudioAttrs(id, NULL,
            AHIDB_BufferLen,  80,
            AHIDB_Name,       (ULONG) t->node.ln_Name,
            AHIDB_Realtime,   (ULONG) &realtime,
            TAG_DONE);

        if((prefs->ahiup_Unit == AHI_NO_UNIT) || realtime ) {
          // Insert node alphabetically
          for(node = list->lh_Head;
              node->ln_Succ;
              node = node->ln_Succ) {
            if(Stricmp(t->node.ln_Name,node->ln_Name) < 0)
              break;
          }
          Insert(list, (struct Node *) t, node->ln_Pred);
        }
        else {
          FreeVec(t);
        }
      }
      id = AHI_NextAudioID(id);
    }
  }
  return list;
}

void *lib_AllocVec(unsigned long size, unsigned long attributes)
{
#ifdef LIB_DEBUG
    void *ptr;

    if (attributes & MEMF_CLEAR) {
        ptr = lib_debug_libc_calloc(1, size);
    } else {
        ptr = lib_debug_libc_malloc(size);
    }
#else
    void *ptr = AllocVec(size, attributes);
#endif

#ifndef __OS2__
    if (ptr == NULL && size > 0) {
        fprintf(stderr, "error: lib_AllocVec failed\n");
        exit(-1);
    }
#endif
#ifdef LIB_DEBUG
    lib_debug_alloc(ptr, size, 1);
#endif

    return ptr;
}

int get_fs_usage (const char *path, const char *disk, struct fs_usage *fsp)
{
    struct InfoData *info = (struct InfoData *)AllocVec(sizeof *info, MEMF_ANY);
    int result = -1;

    if (info) {
	BPTR lock = Lock (path, SHARED_LOCK);
	if (lock) {
	    if (Info (lock, info)) {
		fsp->fsu_blocks = adjust_blocks (info->id_NumBlocks,
						 info->id_BytesPerBlock,
						 512);
		fsp->fsu_bfree = fsp->fsu_bavail =
				  adjust_blocks (info->id_NumBlocks - info->id_NumBlocksUsed,
						 info->id_BytesPerBlock,
						 512);
		fsp->fsu_files = fsp->fsu_ffree = -1;

		result = 0;
	    }
	    UnLock (lock);
	}
	FreeVec (info);
    }
    return result;
}

struct SysSocket *Sys_Net_CreateSocket(struct SysNetData *netdata, enum netaddrtype addrtype)
{
	struct SysSocket *s;
	int r;
	int one;

	one = 1;

	if (addrtype != NA_IPV4)
		return 0;

	s = AllocVec(sizeof(*s), MEMF_ANY);
	if (s)
	{
		s->s = socket(AF_INET, SOCK_DGRAM, 0);
		if (s->s != -1)
		{
			r = IoctlSocket(s->s, FIONBIO, (void *)&one);
			if (r == 0)
			{
				return s;
			}

			CloseSocket(s->s);
		}

		FreeVec(s);
	}

	return 0;
}

/****************************
 Function: CreateContext
   Vector: 19
   Offset: -114
Arguments: A0.L pointer to pointer to struct Gadget
  Returns: D0.L pointer to stuct Gadget
****************************/
int lib_gadtools_f_CreateContext(emumsg_syscall_t *msg)
{
        cpu_t *cpu;
	struct Gadget **ptr;

	DEBUG(4) dprintf("gadtools.library: lib_gadtools_f_CreateContext() called\n");

        cpu = msg->proc->cpu;

	DEBUG(5) dprintf("  Gadget ptr ptr (A0): 0x%x\n",cpu->a[0]);

	/* Allocate temporary space for the pointer */
	ptr = (struct Gadget **)AllocVec(sizeof(struct Gadget *),MEMF_PUBLIC|MEMF_CLEAR);
	if(ptr == NULL) {
                DEBUG(1) dprintf("Error: gadtools.library: lib_gadtools_f_CreateContext: Could not allocate temporary memory\n");
                return HOOK_END_PROC;
        }

	/* Prepare syscall */
	msg->arg[0]._aptr = (APTR)ptr;

	/* Remember memory */
	msg->internalPtr = ptr;

	/* Do syscall */
	return HOOK_SYSCALL;
}

// Decompile function string into list of functions
void funced_decompile(FuncEdData *data)
{
	FunctionEntry *entry;
	Cfg_Instruction *ins;

	// Clear list
	Att_RemList(data->function_list,REMLIST_SAVELIST|REMLIST_FREEDATA);

	// Copy to function entry list
	for (ins=(Cfg_Instruction *)data->function->instructions.mlh_Head;
		ins->node.mln_Succ;
		ins=(Cfg_Instruction *)ins->node.mln_Succ)
	{
		// Label?
		if (ins->type==INST_LABEL)
		{
			// Store label
			stccpy(data->label,ins->string,79);
			continue;
		}

		// Allocate function entry
		if ((entry=AllocVec(sizeof(FunctionEntry),MEMF_CLEAR)))
		{
			// Store function data
			entry->type=ins->type;
			if (ins->string) strcpy(entry->buffer,ins->string);

			// Add entry to list
			if (!(entry->node=Att_NewNode(data->function_list,0,(ULONG)entry,0)))
				FreeVec(entry);
		}
	}
}

   user_mapping *user_mapping::create(uint32_t length)
   {
      DEBUG(5) dprintf("user_mapping::create() called. length=%d\n", length);

      uint8_t *mem = (uint8_t *)AllocVec(length, MEMF_PUBLIC|MEMF_CLEAR);
      if(!mem)
	 return NULL;

      user_mapping *mapping = new user_mapping(length, mem);
 
      if(!mapping) {
	 FreeVec(mem);
         return NULL;
      }

      emulator *emu = emulator::getEmulator();
      uint32_t new_address = emu->v_space.add_mapping(mapping);

      // TODO: Add to r_space too?

      if(new_address == 0xFFFFFFFF) {
	 delete mapping;
         return NULL;
      }

      return mapping;
   }

// Get a toolbar
ToolBarInfo *OpenToolBar(Cfg_ButtonBank *buttons,char *pathname)
{
	ToolBarInfo *toolbar;

	// Allocate toolbar structure
	if (toolbar=AllocVec(sizeof(ToolBarInfo),MEMF_CLEAR))
	{
		// Bank provided?
		if (buttons) toolbar->buttons=buttons;

		// Load disk file
		else
		if (pathname && pathname[0]) toolbar->buttons=OpenButtonBank(pathname);

		// Invalid?
		if (!toolbar->buttons ||
			!(GetToolBarCache(toolbar,FALSE)))
		{
			FreeToolBar(toolbar);
			return 0;
		}
	}

	// Bank provided? Copy pathname
	if (buttons && pathname)
		strcpy(pathname,buttons->path);


	return toolbar;
}