123 lines
4.5 KiB
C
123 lines
4.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ This program 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. │
|
|
│ │
|
|
│ This program 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, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/bits/bits.h"
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/struct/stat.h"
|
|
#include "libc/calls/struct/timeval.h"
|
|
#include "libc/conv/conv.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/errno.h"
|
|
#include "libc/fmt/fmt.h"
|
|
#include "libc/log/internal.h"
|
|
#include "libc/log/log.h"
|
|
#include "libc/math.h"
|
|
#include "libc/nexgen32e/nexgen32e.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/stdio/stdio.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/consts/fileno.h"
|
|
#include "libc/time/struct/tm.h"
|
|
#include "libc/time/time.h"
|
|
|
|
#define kNontrivialSize (8 * 1000 * 1000)
|
|
|
|
STATIC_YOINK("ntoa");
|
|
STATIC_YOINK("stoa");
|
|
STATIC_YOINK("ftoa");
|
|
|
|
static int loglevel2char(unsigned level) {
|
|
switch (level) {
|
|
case kLogInfo:
|
|
return 'I';
|
|
case kLogDebug:
|
|
return 'D';
|
|
case kLogWarn:
|
|
return 'W';
|
|
case kLogFatal:
|
|
return 'F';
|
|
case kLogVerbose:
|
|
return 'V';
|
|
default:
|
|
return '?';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Takes corrective action if logging is on the fritz.
|
|
*/
|
|
void vflogf_onfail(FILE *f) {
|
|
errno_t err;
|
|
struct stat st;
|
|
if (IsTiny()) return;
|
|
err = ferror(f);
|
|
if ((err == ENOSPC || err == EDQUOT || err == EFBIG) &&
|
|
(fstat(fileno(f), &st) == -1 || st.st_size > kNontrivialSize)) {
|
|
ftruncate(fileno(f), 0);
|
|
fseek(f, SEEK_SET, 0);
|
|
f->beg = f->end = 0;
|
|
clearerr(f);
|
|
(fprintf)(f, "performed emergency log truncation: %s\r\n", strerror(err));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Writes formatted message w/ timestamp to log.
|
|
*/
|
|
void(vflogf)(unsigned level, const char *file, int line, FILE *f,
|
|
const char *fmt, va_list va) {
|
|
static struct timespec ts;
|
|
struct tm tm;
|
|
long double t2;
|
|
const char *prog;
|
|
int64_t secs, nsec, dots;
|
|
char timebuf[32], *timebufp;
|
|
if (!f) f = g_logfile;
|
|
if (fileno(f) == -1) return;
|
|
t2 = nowl();
|
|
secs = t2;
|
|
nsec = rem1000000000int64(t2 * 1e9L);
|
|
if (secs > ts.tv_sec) {
|
|
localtime_r(&secs, &tm);
|
|
strftime(timebuf, sizeof(timebuf), "%Y-%m-%dT%H:%M:%S.", &tm);
|
|
timebufp = timebuf;
|
|
dots = nsec;
|
|
} else {
|
|
timebufp = "--------------------";
|
|
dots = nsec - ts.tv_nsec;
|
|
}
|
|
ts.tv_sec = secs;
|
|
ts.tv_nsec = nsec;
|
|
prog = basename(program_invocation_name);
|
|
if ((fprintf)(f, "%c%s%06ld:%s:%d:%.*s:%d] ", loglevel2char(level), timebufp,
|
|
rem1000000int64(div1000int64(dots)), file, line,
|
|
strchrnul(prog, '.') - prog, prog, getpid()) <= 0) {
|
|
vflogf_onfail(f);
|
|
}
|
|
(vfprintf)(f, fmt, va);
|
|
va_end(va);
|
|
fputs("\r\n", f);
|
|
if (level == kLogFatal) {
|
|
__start_fatal(file, line);
|
|
(dprintf)(STDERR_FILENO, "fatal error see logfile\r\n");
|
|
die();
|
|
unreachable;
|
|
}
|
|
}
|