utalloc.c

内核linux2.4.20,可跟rtlinux3.2打补丁 组成实时linux系统,编译内核

	}


	/* Mark the segment as deleted */

	MEMSET (&address->user_space, 0xEA, address->size);

	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Freeing size %X\n", address->size));

	acpi_ut_release_mutex (ACPI_MTX_MEMORY);
	return_ACPI_STATUS (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_ut_dump_allocation_info
 *
 * PARAMETERS:
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print some info about the outstanding allocations.
 *
 ******************************************************************************/

void
acpi_ut_dump_allocation_info (
	void)
{
/*
	ACPI_MEMORY_LIST        *Mem_list;
*/

	FUNCTION_TRACE ("Ut_dump_allocation_info");

/*
	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Current allocations",
			  Mem_list->Current_count,
			  ROUND_UP_TO_1K (Mem_list->Current_size)));

	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Max concurrent allocations",
			  Mem_list->Max_concurrent_count,
			  ROUND_UP_TO_1K (Mem_list->Max_concurrent_size)));


	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Total (all) internal objects",
			  Running_object_count,
			  ROUND_UP_TO_1K (Running_object_size)));

	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Total (all) allocations",
			  Running_alloc_count,
			  ROUND_UP_TO_1K (Running_alloc_size)));


	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Current Nodes",
			  Acpi_gbl_Current_node_count,
			  ROUND_UP_TO_1K (Acpi_gbl_Current_node_size)));

	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Max Nodes",
			  Acpi_gbl_Max_concurrent_node_count,
			  ROUND_UP_TO_1K ((Acpi_gbl_Max_concurrent_node_count * sizeof (acpi_namespace_node)))));
*/
	return_VOID;
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_ut_dump_allocations
 *
 * PARAMETERS:  Component           - Component(s) to dump info for.
 *              Module              - Module to dump info for.  NULL means all.
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print a list of all outstanding allocations.
 *
 ******************************************************************************/

void
acpi_ut_dump_allocations (
	u32                     component,
	NATIVE_CHAR             *module)
{
	acpi_debug_mem_block    *element;
	u32                     i;


	FUNCTION_TRACE ("Ut_dump_allocations");


	element = acpi_gbl_memory_lists[0].list_head;
	if (element == NULL) {
		ACPI_DEBUG_PRINT ((ACPI_DB_OK,
				"No outstanding allocations.\n"));
		return_VOID;
	}


	/*
	 * Walk the allocation list.
	 */
	acpi_ut_acquire_mutex (ACPI_MTX_MEMORY);

	ACPI_DEBUG_PRINT ((ACPI_DB_OK,
		"Outstanding allocations:\n"));

	for (i = 1; ; i++)  /* Just a counter */ {
		if ((element->component & component) &&
			((module == NULL) || (0 == STRCMP (module, element->module)))) {
			if (((acpi_operand_object  *)(&element->user_space))->common.type != ACPI_CACHED_OBJECT) {
				ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
						 "%p Len %04X %9.9s-%d",
						 &element->user_space, element->size, element->module,
						 element->line));

				/* Most of the elements will be internal objects. */

				switch (((acpi_operand_object  *)
					(&element->user_space))->common.data_type) {
				case ACPI_DESC_TYPE_INTERNAL:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" Obj_type %12.12s R%d",
							acpi_ut_get_type_name (((acpi_operand_object *)(&element->user_space))->common.type),
							((acpi_operand_object *)(&element->user_space))->common.reference_count));
					break;

				case ACPI_DESC_TYPE_PARSER:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" Parse_obj Opcode %04X",
							((acpi_parse_object *)(&element->user_space))->opcode));
					break;

				case ACPI_DESC_TYPE_NAMED:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" Node %4.4s",
							(char*)&((acpi_namespace_node *)(&element->user_space))->name));
					break;

				case ACPI_DESC_TYPE_STATE:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" Untyped State_obj"));
					break;

				case ACPI_DESC_TYPE_STATE_UPDATE:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" UPDATE State_obj"));
					break;

				case ACPI_DESC_TYPE_STATE_PACKAGE:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" PACKAGE State_obj"));
					break;

				case ACPI_DESC_TYPE_STATE_CONTROL:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" CONTROL State_obj"));
					break;

				case ACPI_DESC_TYPE_STATE_RPSCOPE:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" ROOT-PARSE-SCOPE State_obj"));
					break;

				case ACPI_DESC_TYPE_STATE_PSCOPE:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" PARSE-SCOPE State_obj"));
					break;

				case ACPI_DESC_TYPE_STATE_WSCOPE:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" WALK-SCOPE State_obj"));
					break;

				case ACPI_DESC_TYPE_STATE_RESULT:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" RESULT State_obj"));
					break;

				case ACPI_DESC_TYPE_STATE_NOTIFY:
					ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK,
							" NOTIFY State_obj"));
					break;
				}

				ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OK, "\n"));
			}
		}

		if (element->next == NULL) {
			break;
		}

		element = element->next;
	}

	acpi_ut_release_mutex (ACPI_MTX_MEMORY);

	ACPI_DEBUG_PRINT ((ACPI_DB_OK,
		"Total number of unfreed allocations = %d(%X)\n", i,i));


	return_VOID;

}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_ut_allocate
 *
 * PARAMETERS:  Size                - Size of the allocation
 *              Component           - Component type of caller
 *              Module              - Source file name of caller
 *              Line                - Line number of caller
 *
 * RETURN:      Address of the allocated memory on success, NULL on failure.
 *
 * DESCRIPTION: The subsystem's equivalent of malloc.
 *
 ******************************************************************************/

void *
acpi_ut_allocate (
	u32                     size,
	u32                     component,
	NATIVE_CHAR             *module,
	u32                     line)
{
	acpi_debug_mem_block    *address;
	acpi_status             status;


	FUNCTION_TRACE_U32 ("Ut_allocate", size);


	/* Check for an inadvertent size of zero bytes */

	if (!size) {
		_REPORT_ERROR (module, line, component,
				("Ut_allocate: Attempt to allocate zero bytes\n"));
		size = 1;
	}

	address = acpi_os_allocate (size + sizeof (acpi_debug_mem_block));
	if (!address) {
		/* Report allocation error */

		_REPORT_ERROR (module, line, component,
				("Ut_allocate: Could not allocate size %X\n", size));

		return_PTR (NULL);
	}

	status = acpi_ut_track_allocation (ACPI_MEM_LIST_GLOBAL, address, size,
			  MEM_MALLOC, component, module, line);
	if (ACPI_FAILURE (status)) {
		acpi_os_free (address);
		return_PTR (NULL);
	}

	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_allocated++;
	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size += size;

	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p Size %X\n", address, size));

	return_PTR ((void *) &address->user_space);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_ut_callocate
 *
 * PARAMETERS:  Size                - Size of the allocation
 *              Component           - Component type of caller
 *              Module              - Source file name of caller
 *              Line                - Line number of caller
 *
 * RETURN:      Address of the allocated memory on success, NULL on failure.
 *
 * DESCRIPTION: Subsystem equivalent of calloc.
 *
 ******************************************************************************/

void *
acpi_ut_callocate (
	u32                     size,
	u32                     component,
	NATIVE_CHAR             *module,
	u32                     line)
{
	acpi_debug_mem_block    *address;
	acpi_status             status;


	FUNCTION_TRACE_U32 ("Ut_callocate", size);


	/* Check for an inadvertent size of zero bytes */

	if (!size) {
		_REPORT_ERROR (module, line, component,
				("Ut_callocate: Attempt to allocate zero bytes\n"));
		return_PTR (NULL);
	}


	address = acpi_os_callocate (size + sizeof (acpi_debug_mem_block));
	if (!address) {
		/* Report allocation error */

		_REPORT_ERROR (module, line, component,
				("Ut_callocate: Could not allocate size %X\n", size));
		return_PTR (NULL);
	}

	status = acpi_ut_track_allocation (ACPI_MEM_LIST_GLOBAL, address, size,
			   MEM_CALLOC, component, module, line);
	if (ACPI_FAILURE (status)) {
		acpi_os_free (address);
		return_PTR (NULL);
	}

	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_allocated++;
	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size += size;

	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p Size %X\n", address, size));
	return_PTR ((void *) &address->user_space);
}


/*******************************************************************************
 *
 * FUNCTION:    Acpi_ut_free
 *
 * PARAMETERS:  Address             - Address of the memory to deallocate
 *              Component           - Component type of caller
 *              Module              - Source file name of caller
 *              Line                - Line number of caller
 *
 * RETURN:      None
 *
 * DESCRIPTION: Frees the memory at Address
 *
 ******************************************************************************/

void
acpi_ut_free (
	void                    *address,
	u32                     component,
	NATIVE_CHAR             *module,
	u32                     line)
{
	acpi_debug_mem_block    *debug_block;


	FUNCTION_TRACE_PTR ("Ut_free", address);


	if (NULL == address) {
		_REPORT_ERROR (module, line, component,
			("Acpi_ut_free: Trying to delete a NULL address\n"));

		return_VOID;
	}

	debug_block = (acpi_debug_mem_block *)
			  (((char *) address) - sizeof (acpi_debug_mem_header));

	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_freed++;
	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size -= debug_block->size;

	acpi_ut_remove_allocation (ACPI_MEM_LIST_GLOBAL, debug_block,
			component, module, line);
	acpi_os_free (debug_block);

	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p freed\n", address));

	return_VOID;
}

#endif  /* #ifdef ACPI_DBG_TRACK_ALLOCATIONS */