/
util.h
104 lines (98 loc) · 3.58 KB
/
util.h
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/*
* Copyright 2012 Kazuho Oku
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are
* those of the authors and should not be interpreted as representing official
* policies, either expressed or implied, of the author.
*
*/
#ifndef picogc_util_h
#define picogc_util_h
#include <cstdio>
extern "C" {
#include <sys/resource.h>
}
// please include picogc.h by yourself
namespace picogc {
class gc_log_emitter : public gc_emitter {
FILE* fp_;
double mark_time_;
double sweep_time_;
struct {
double mark_time;
double sweep_time;
gc_stats stats;
} accumulated_;
static double now() {
rusage ru;
getrusage(RUSAGE_SELF, &ru);
return ru.ru_utime.tv_sec + ru.ru_utime.tv_usec / 1000000.0;
}
public:
gc_log_emitter(FILE* fp) : fp_(fp) {
accumulated_.mark_time = 0;
accumulated_.sweep_time = 0;
memset(&accumulated_.stats, 0, sizeof(accumulated_.stats));
}
virtual void gc_start(gc*) {
fprintf(fp_, "--- picogc - garbage collection ---\n");
fflush(fp_);
}
virtual void gc_end(gc*, const gc_stats& stats) {
accumulated_.mark_time += mark_time_;
accumulated_.sweep_time += sweep_time_;
accumulated_.stats.on_stack += stats.on_stack;
accumulated_.stats.slowly_marked += stats.slowly_marked;
accumulated_.stats.not_collected += stats.not_collected;
accumulated_.stats.collected += stats.collected;
fprintf(fp_,
"mark_time: %f (%f)\n"
"sweep_time: %f (%f)\n"
"on_stack: %zd (%zd)\n"
"slowly_marked: %zd (%zd)\n"
"not_collected: %zd (%zd)\n"
"collected: %zd (%zd)\n"
"-----------------------------------\n",
mark_time_, accumulated_.mark_time,
sweep_time_, accumulated_.sweep_time,
stats.on_stack, accumulated_.stats.on_stack,
stats.slowly_marked, accumulated_.stats.slowly_marked,
stats.not_collected, accumulated_.stats.not_collected,
stats.collected, accumulated_.stats.collected);
fflush(fp_);
}
virtual void mark_start(gc*) {
mark_time_ = now();
}
virtual void mark_end(gc*) {
mark_time_ = now() - mark_time_;
}
virtual void sweep_start(gc*) {
sweep_time_ = now();
}
virtual void sweep_end(gc*) {
sweep_time_ = now() - sweep_time_;
}
};
}
#endif