d356f49366
* NEW: Some little redesign of the profiling GUI. [EXAMPLES] * OPT: Little optimization in GameOfLife example. [INTERPRETER] * NEW: System.Profile is a new property to disable or enable the profiling at run time. Profiling can only be enabled if debugging information are available. [GB.DEBUG] * NEW: Abort the program if the profile file is bigger than 512M. git-svn-id: svn://localhost/gambas/trunk@4753 867c0c6c-44f3-4631-809d-bfa615b0a4ec
201 lines
3.8 KiB
C
201 lines
3.8 KiB
C
/***************************************************************************
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profile.c
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(c) 2000-2012 Benoît Minisini <gambas@users.sourceforge.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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***************************************************************************/
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#define __PROFILE_C
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#include <sys/time.h>
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#include <stdio.h>
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#include "gambas.h"
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#include "debug.h"
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#include "main.h"
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// Maximum profile file is 512 M
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#define MAX_PROFILE_SIZE (512 << 20)
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static bool _init = FALSE;
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static FILE *_file;
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static int _last_line = 0;
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static bool _new_line = TRUE;
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static int _count = 0;
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static uint64_t get_time(void)
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{
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static uint64_t last = 0;
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struct timeval time;
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uint64_t t;
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gettimeofday(&time, NULL);
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t = (uint64_t)time.tv_sec * 1000000 + (uint64_t)time.tv_usec - last;
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last += t;
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return t;
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}
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void PROFILE_init(void)
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{
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char path[PATH_MAX + 1];
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if (_init)
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return;
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sprintf(path, ".prof.%d", getpid());
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//fprintf(stderr, "gb.profile: start profiling: %s\n", path);
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_file = fopen(path, "w");
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if (!_file)
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{
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fprintf(stderr, "gb.profile: cannot create profile file '%s': %s\n", path, strerror(errno));
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abort();
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}
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_init = TRUE;
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get_time();
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}
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void PROFILE_exit(void)
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{
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if (!_init)
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return;
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//fprintf(stderr, "gb.profile: stop profiling\n");
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if (!_new_line)
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fputc('\n', _file);
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fclose(_file);
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}
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static void check_size()
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{
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_count = 0;
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if (ftell(_file) > MAX_PROFILE_SIZE)
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{
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fprintf(stderr, "gb.profile: maximum profile size reached (512M)\n");
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PROFILE_exit();
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abort();
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}
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}
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#define CODE(n) (n + '9' + 1)
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static void add_line(ushort line, uint64_t time)
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{
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int n;
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char buf[32], num[16];
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char *p;
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n = line - _last_line;
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p = buf;
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if (n >= -9 && n <= 9)
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*p++ = CODE(0 + n + 9);
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else if (n >= -99 && n <= 99)
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{
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*p++ = n > 0 ? CODE(19) : CODE(20);
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*p++ = CODE(0) + abs(n) - 10;
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}
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else
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{
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*p++ = n > 0 ? CODE(21) : CODE(22);
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n = sprintf(num, "%d", abs(n));
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*p++ = CODE(n);
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strcpy(p, num);
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p += n;
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}
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if (time <= 9)
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*p++ = CODE(time);
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else
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{
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n = sprintf(num, "%" PRIu64, time);
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*p++ = CODE(10 + n - 2);
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strcpy(p, num);
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p += n;
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}
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*p = 0;
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fputs(buf, _file);
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_last_line = line;
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_new_line = FALSE;
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_count++;
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if ((_count & 0xFFFFF) == 0)
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check_size();
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}
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void PROFILE_add(void *cp, void *fp, void *pc)
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{
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uint64_t time = get_time();
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ushort line;
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line = 0;
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DEBUG_calc_line_from_position(cp, fp, pc, &line);
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add_line(line, time);
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}
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void PROFILE_begin(void *cp, void *fp)
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{
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uint64_t time = get_time();
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const char *where = cp ? DEBUG_get_position(cp, fp, NULL) : ".System.EventLoop";
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if (!_new_line)
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fputc('\n', _file);
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fprintf(_file, " >%s %" PRId64 "\n", where, time);
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_last_line = 0;
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_new_line = TRUE;
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_count++;
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if ((_count & 0xFFFFF) == 0)
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check_size();
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/*if (cp && fp)
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{
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FUNCTION *ffp = (FUNCTION *)fp;
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add_line(ffp->debug->line, time);
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}*/
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}
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void PROFILE_end(void *cp, void *fp)
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{
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uint64_t time = get_time();
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//const char *where;
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if (cp && fp)
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{
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FUNCTION *ffp = (FUNCTION *)fp;
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add_line(ffp->debug->line + ffp->debug->nline, time);
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}
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//where = cp ? DEBUG_get_position(cp, fp, NULL) : ".System.EventLoop";
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if (!_new_line)
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fputc('\n', _file);
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fprintf(_file, " <\n");
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_last_line = 0;
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_new_line = TRUE;
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}
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