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Work towards improving signals and processes

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This commit is contained in:
Justine Tunney 2021-01-27 19:34:02 -08:00
parent de703b182c
commit d7ac16a9ed
96 changed files with 1474 additions and 427 deletions
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36
libc/log/vflogf.c
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@ -41,7 +41,9 @@ STATIC_YOINK("ntoa");
STATIC_YOINK("stoa");
STATIC_YOINK("ftoa");
static int loglevel2char(unsigned level) {
static struct timespec vflogf_ts;
static int vflogf_loglevel2char(unsigned level) {
switch (level) {
case kLogInfo:
return 'I';
@ -78,34 +80,46 @@ void vflogf_onfail(FILE *f) {
/**
* Writes formatted message w/ timestamp to log.
*
* Timestamps are hyphenated out when multiple events happen within the
* same second in the same process. When timestamps are crossed out, it
* will display microseconsd as a delta elapsed time. This is useful if
* you do something like:
*
* LOGF("connecting to foo");
* connect(...)
* LOGF("connected to foo");
*
* In that case, the second log entry will always display the amount of
* time that it took to connect. This is great in forking applications.
*/
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;
bool issamesecond;
char buf32[32], *buf32p;
int64_t secs, nsec, dots;
if (!f) f = g_logfile;
if (fileno(f) == -1) return;
t2 = nowl();
secs = t2;
nsec = rem1000000000int64(t2 * 1e9L);
if (secs > ts.tv_sec) {
nsec = (t2 - secs) * 1e9L;
issamesecond = secs == vflogf_ts.tv_sec;
dots = issamesecond ? nsec - vflogf_ts.tv_nsec : nsec;
vflogf_ts.tv_sec = secs;
vflogf_ts.tv_nsec = nsec;
if (!issamesecond) {
localtime_r(&secs, &tm);
strftime(buf32, sizeof(buf32), "%Y-%m-%dT%H:%M:%S.", &tm);
buf32p = buf32;
dots = nsec;
} else {
buf32p = "--------------------";
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), buf32p,
rem1000000int64(div1000int64(dots)), file, line,
if ((fprintf)(f, "%c%s%06ld:%s:%d:%.*s:%d] ", vflogf_loglevel2char(level),
buf32p, rem1000000int64(div1000int64(dots)), file, line,
strchrnul(prog, '.') - prog, prog, getpid()) <= 0) {
vflogf_onfail(f);
}