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/* Copyright (C) 2005-2013 Shugo Maeda <shugo@ruby-lang.org> and Charlie Savage <cfis@savagexi.com>
Please see the LICENSE file for copyright and distribution information */
#ifndef __RP_STACK__
#define __RP_STACK__
#include <ruby.h>
#include "rp_measure.h"
#include "rp_call_info.h"
/* Temporary object that maintains profiling information
for active methods. They are created and destroyed
as the program moves up and down its stack. */
typedef struct
{
/* Caching prof_method_t values significantly
increases performance. */
prof_call_info_t *call_info;
double start_time;
double switch_time; /* Time at switch to different thread */
double wait_time;
double child_time;
double pause_time; // Time pause() was initiated
double dead_time; // Time to ignore (i.e. total amount of time between pause/resume blocks)
int depth;
unsigned int line;
} prof_frame_t;
#define prof_frame_is_paused(f) (f->pause_time >= 0)
#define prof_frame_is_unpaused(f) (f->pause_time < 0)
void prof_frame_pause(prof_frame_t*, double current_measurement);
void prof_frame_unpause(prof_frame_t*, double current_measurement);
/* Current stack of active methods.*/
typedef struct
{
prof_frame_t *start;
prof_frame_t *end;
prof_frame_t *ptr;
} prof_stack_t;
prof_stack_t * prof_stack_create();
void prof_stack_free(prof_stack_t *stack);
prof_frame_t * prof_stack_push(prof_stack_t *stack, double measurement);
prof_frame_t * prof_stack_pop(prof_stack_t *stack, double measurement);
prof_frame_t * prof_stack_peek(prof_stack_t *stack);
#endif //__RP_STACK__
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