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log: add breakpoints when BREAK_LEVEL is reached

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This commit is contained in:
Danny Robson 2016-01-21 13:55:23 +11:00
parent 9f6d41eb8c
commit 800d7fef00
1 changed files with 40 additions and 14 deletions
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54
log.cpp
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@ -95,27 +95,53 @@ log_level (void)
}
//-----------------------------------------------------------------------------
static bool
needs_break (util::level_t level)
{
static util::level_t break_level;
static bool has_level = [&] (void) {
const char *env = getenv ("BREAK_LEVEL");
if (!env)
return false;
try {
break_level = to_level (env);
return true;
} catch (...) {
return false;
}
} ();
return has_level && level <= break_level;
}
///////////////////////////////////////////////////////////////////////////////
void
util::log (util::level_t level, const std::string &msg)
{
static const util::level_t LOG_LEVEL = log_level ();
if (level > LOG_LEVEL)
return;
// fire a breakpoint before the following early exit
if (needs_break (level))
breakpoint ();
static const size_t time_len = strlen("YYYY-mm-dd HHMMhSS") + 1;
std::string time_string (time_len - 1, '\0');
time_t unix_time = time (nullptr);
static const util::level_t LOG_LEVEL = log_level ();
if (level > LOG_LEVEL)
return;
if (0 == strftime (&time_string[0],
time_len,
"%Y-%m-%d %H%Mh%S",
localtime (&unix_time))) {
warn ("failed to log time");
return;
}
static const size_t time_len = strlen("YYYY-mm-dd HHMMhSS") + 1;
std::string time_string (time_len - 1, '\0');
time_t unix_time = time (nullptr);
std::cerr << time_string << " [" << level << "] " << msg << std::endl;
if (0 == strftime (&time_string[0],
time_len,
"%Y-%m-%d %H%Mh%S",
localtime (&unix_time))) {
warn ("failed to log time");
return;
}
std::cerr << time_string << " [" << level << "] " << msg << std::endl;
}