dup

Description:

[ CCode ( cname = "g_memdup" ) ]
public void* dup (void* mem, uint n)

Allocates byte_size bytes of memory, and copies byte_size bytes into it from mem.

Note:

Use dup2 instead, as it accepts a size_t argument for byte_size, avoiding the possibility of overflow in a size_t → uint conversion

If mem is null it returns null.

Example: Copy n bytes:

public static int main (string[] args) {
	char[] data = {'h', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd', '!', '\0'};

	// Copy the data into a typeless buffer:
	// Do not copy arrays / classes / etc when you do not know what you are doing.
	// You may break your ref counters / lose array length information / etc
	void* copy = Memory.dup (data, (uint) (sizeof (char)*data.length));
	print ("%s\n", (string) copy);
	free (copy);

	return 0;
}

valac --pkg glib-2.0 GLib.Memory.dup.vala

Parameters:

mem	the memory to copy.
byte_size	the number of bytes to copy.

Returns:

a pointer to the newly-allocated copy of the memory, or null if mem is null.

Namespace: GLib.Memory

Package: glib-2.0