/* * Copyright 2007 Rob Kendrick <rjek@netsurf-browser.org> * Copyright 2004-2007 James Bursa <bursa@users.sourceforge.net> * Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net> * Copyright 2003 John M Bell <jmb202@ecs.soton.ac.uk> * Copyright 2004 John Tytgat <joty@netsurf-browser.org> * * This file is part of NetSurf, http://www.netsurf-browser.org/ * * NetSurf is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * NetSurf is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <stdarg.h> #include <stdio.h> #include <sys/time.h> #include "desktop/netsurf.h" #include "utils/log.h" nserror nslog_init(nslog_ensure_t *ensure, int *pargc, char **argv) { nserror ret = NSERROR_OK; if (((*pargc) > 1) && (argv[1][0] == '-') && (argv[1][1] == 'v') && (argv[1][2] == 0)) { int argcmv; for (argcmv = 2; argcmv < (*pargc); argcmv++) { argv[argcmv - 1] = argv[argcmv]; } (*pargc)--; /* ensure we actually show logging */ verbose_log = true; /* ensure stderr is available */ if (ensure != NULL) { if (ensure(stderr) == false) { /* failed to ensure output */ ret = NSERROR_INIT_FAILED; } } } return ret; } #ifndef NDEBUG /* Subtract the `struct timeval' values X and Y, storing the result in RESULT. Return 1 if the difference is negative, otherwise 0. */ static int timeval_subtract(struct timeval *result, struct timeval *x, struct timeval *y) { /* Perform the carry for the later subtraction by updating y. */ if (x->tv_usec < y->tv_usec) { int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1; y->tv_usec -= 1000000 * nsec; y->tv_sec += nsec; } if (x->tv_usec - y->tv_usec > 1000000) { int nsec = (x->tv_usec - y->tv_usec) / 1000000; y->tv_usec += 1000000 * nsec; y->tv_sec -= nsec; } /* Compute the time remaining to wait. tv_usec is certainly positive. */ result->tv_sec = x->tv_sec - y->tv_sec; result->tv_usec = x->tv_usec - y->tv_usec; /* Return 1 if result is negative. */ return x->tv_sec < y->tv_sec; } const char *nslog_gettime(void) { static struct timeval start_tv; static char buff[32]; struct timeval tv; struct timeval now_tv; if (!timerisset(&start_tv)) { gettimeofday(&start_tv, NULL); } gettimeofday(&now_tv, NULL); timeval_subtract(&tv, &now_tv, &start_tv); snprintf(buff, sizeof(buff),"(%ld.%06ld)", (long)tv.tv_sec, (long)tv.tv_usec); return buff; } void nslog_log(const char *format, ...) { if (verbose_log) { va_list ap; va_start(ap, format); vfprintf(stderr, format, ap); va_end(ap); } } #endif