05-05-2011
Quote:
Originally Posted by
rupeshkp728
I want to find the size of the total memory allocated on the heap for the following statement:
int* a = new int[1000];How can I use the sizeof operator for this?
I used:
printf("\t===> %d\n",sizeof(*a));
Is this statement correct?
I have asked the question because when I checked the memory of heap allocated in windbg it shows me the size as fc4 i.e. 4036 which is more then 4000 and not as desired. Any hint as to what may be the cause?
The statement is not correct, you'll get the size of an int on your architecture.
windbg... hmm... that's doesn't sound really Un*x...
Remember that new[] is an operator provided by your compiler, we don't know what it does... It may for instance add a header for internal bookkeeping; or perhaps the underlying allocation mechanism on your system imposed this... Who knows?
You'll have to look at the interna of the new[] operator to find it out.
Cheers, Loïc
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LEARN ABOUT CENTOS
drop_operator
DROP
OPERATOR(7) PostgreSQL 9.2.7 Documentation DROP OPERATOR(7)
NAME
DROP_OPERATOR - remove an operator
SYNOPSIS
DROP OPERATOR [ IF EXISTS ] name ( { left_type | NONE } , { right_type | NONE } ) [ CASCADE | RESTRICT ]
DESCRIPTION
DROP OPERATOR drops an existing operator from the database system. To execute this command you must be the owner of the operator.
PARAMETERS
IF EXISTS
Do not throw an error if the operator does not exist. A notice is issued in this case.
name
The name (optionally schema-qualified) of an existing operator.
left_type
The data type of the operator's left operand; write NONE if the operator has no left operand.
right_type
The data type of the operator's right operand; write NONE if the operator has no right operand.
CASCADE
Automatically drop objects that depend on the operator.
RESTRICT
Refuse to drop the operator if any objects depend on it. This is the default.
EXAMPLES
Remove the power operator a^b for type integer:
DROP OPERATOR ^ (integer, integer);
Remove the left unary bitwise complement operator ~b for type bit:
DROP OPERATOR ~ (none, bit);
Remove the right unary factorial operator x! for type bigint:
DROP OPERATOR ! (bigint, none);
COMPATIBILITY
There is no DROP OPERATOR statement in the SQL standard.
SEE ALSO
CREATE OPERATOR (CREATE_OPERATOR(7)), ALTER OPERATOR (ALTER_OPERATOR(7))
PostgreSQL 9.2.7 2014-02-17 DROP OPERATOR(7)