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8150026: Add the ability to log with variable log level

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Reviewed-by: brutisso, mlarsson
This commit is contained in:
Robbin Ehn 2016-02-26 10:51:01 +01:00
parent 34effca3ac
commit 64f428726b
1 changed files with 17 additions and 11 deletions
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28
hotspot/src/share/vm/logging/log.hpp
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@ -107,18 +107,25 @@ class Log VALUE_OBJ_CLASS_SPEC {
return LogTagSetMapping<T0, T1, T2, T3, T4>::tagset().is_level(level);
}
ATTRIBUTE_PRINTF(2, 3)
static void write(LogLevelType level, const char* fmt, ...) {
va_list args;
va_start(args, fmt);
vwrite(level, fmt, args);
va_end(args);
};
template <LogLevelType Level>
ATTRIBUTE_PRINTF(1, 2)
static void write(const char* fmt, ...) {
va_list args;
va_start(args, fmt);
vwrite<Level>(fmt, args);
vwrite(Level, fmt, args);
va_end(args);
};
template <LogLevelType Level>
ATTRIBUTE_PRINTF(1, 0)
static void vwrite(const char* fmt, va_list args) {
ATTRIBUTE_PRINTF(2, 0)
static void vwrite(LogLevelType level, const char* fmt, va_list args) {
char buf[LogBufferSize];
va_list saved_args; // For re-format on buf overflow.
va_copy(saved_args, args);
@ -132,27 +139,26 @@ class Log VALUE_OBJ_CLASS_SPEC {
prefix_len = LogPrefix<T0, T1, T2, T3, T4>::prefix(newbuf, newbuf_len);
ret = os::log_vsnprintf(newbuf + prefix_len, newbuf_len - prefix_len, fmt, saved_args);
assert(ret >= 0, "Log message buffer issue");
puts<Level>(newbuf);
puts(level, newbuf);
FREE_C_HEAP_ARRAY(char, newbuf);
} else {
puts<Level>(buf);
puts(level, buf);
}
}
template <LogLevelType Level>
static void puts(const char* string) {
LogTagSetMapping<T0, T1, T2, T3, T4>::tagset().log(Level, string);
static void puts(LogLevelType level, const char* string) {
LogTagSetMapping<T0, T1, T2, T3, T4>::tagset().log(level, string);
}
#define LOG_LEVEL(level, name) ATTRIBUTE_PRINTF(2, 0) \
Log& v##name(const char* fmt, va_list args) { \
vwrite<LogLevel::level>(fmt, args); \
vwrite(LogLevel::level, fmt, args); \
return *this; \
} \
Log& name(const char* fmt, ...) ATTRIBUTE_PRINTF(2, 3) { \
va_list args; \
va_start(args, fmt); \
vwrite<LogLevel::level>(fmt, args); \
vwrite(LogLevel::level, fmt, args); \
va_end(args); \
return *this; \
} \