/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * This D script is used as an example in the Solaris Dynamic Tracing Guide
 * wiki in the "sdt Provider" Chapter.
 *
 * The full text of the this chapter may be found here:
 *
 *   http://docs.oracle.com/cd/E36784_01/html/E36846/gkzik.html#scrolltoc
 *
 * On machines that have DTrace installed, this script is available as
 * interval.d in /usr/demo/dtrace, a directory that contains all D scripts
 * used in the Solaris Dynamic Tracing Guide.  A table of the scripts and their
 * corresponding chapters may be found here:
 *
 *   file:///usr/demo/dtrace/index.html
 */

#pragma D option quiet

sdt:::callout-start
{
	self->callout = ((callout_t *)arg0)->c_func;
}

fbt::timeout:entry
/self->callout && arg2 <= 100/
{
	/*
	 * In this case, we are most interested in interval timeout(9F)s that
	 * are short.  We therefore do a linear quantization from 0 ticks to
	 * 100 ticks.  The system clock's frequency ? set by the variable
	 * "hz" ? defaults to 100, so 100 system clock ticks is one second. 
	 */
	@callout[self->callout] = lquantize(arg2, 0, 100);
}

sdt:::callout-end
{
	self->callout = NULL;
}

END
{
	printa("%a\n%@d\n\n", @callout);
}