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/*
* Logging infrastructure that aims to support multi-threading, indentation
* and ansi colors.
*/
#include "rust_internal.h"
#include "sync/spin_lock.h"
#include "util/array_list.h"
#include <stdarg.h>
static uint32_t
read_type_bit_mask() {
uint32_t bits = rust_log::ULOG | rust_log::ERR;
char *env_str = getenv("RUST_LOG");
if (env_str) {
bits = 0;
bits |= strstr(env_str, "err") ? rust_log::ERR : 0;
bits |= strstr(env_str, "mem") ? rust_log::MEM : 0;
bits |= strstr(env_str, "comm") ? rust_log::COMM : 0;
bits |= strstr(env_str, "task") ? rust_log::TASK : 0;
bits |= strstr(env_str, "up") ? rust_log::UPCALL : 0;
bits |= strstr(env_str, "dom") ? rust_log::DOM : 0;
bits |= strstr(env_str, "ulog") ? rust_log::ULOG : 0;
bits |= strstr(env_str, "trace") ? rust_log::TRACE : 0;
bits |= strstr(env_str, "dwarf") ? rust_log::DWARF : 0;
bits |= strstr(env_str, "cache") ? rust_log::CACHE : 0;
bits |= strstr(env_str, "timer") ? rust_log::TIMER : 0;
bits |= strstr(env_str, "gc") ? rust_log::GC : 0;
bits |= strstr(env_str, "stdlib") ? rust_log::STDLIB : 0;
bits |= strstr(env_str, "special") ? rust_log::SPECIAL : 0;
bits |= strstr(env_str, "kern") ? rust_log::KERN : 0;
bits |= strstr(env_str, "all") ? rust_log::ALL : 0;
bits = strstr(env_str, "none") ? 0 : bits;
}
return bits;
}
rust_log::ansi_color
get_type_color(rust_log::log_type type) {
rust_log::ansi_color color = rust_log::WHITE;
if (type & rust_log::ERR)
color = rust_log::RED;
if (type & rust_log::MEM)
color = rust_log::YELLOW;
if (type & rust_log::UPCALL)
color = rust_log::GREEN;
if (type & rust_log::COMM)
color = rust_log::MAGENTA;
if (type & rust_log::DOM)
color = rust_log::LIGHTTEAL;
if (type & rust_log::TASK)
color = rust_log::LIGHTTEAL;
return color;
}
static const char * _foreground_colors[] = { "[37m",
"[31m", "[1;31m",
"[32m", "[1;32m",
"[33m", "[1;33m",
"[31m", "[1;31m",
"[35m", "[1;35m",
"[36m", "[1;36m" };
/**
* Synchronizes access to the underlying logging mechanism.
*/
static spin_lock _log_lock;
static uint32_t _last_thread_id;
rust_log::rust_log(rust_srv *srv, rust_dom *dom) :
_srv(srv),
_dom(dom),
_type_bit_mask(read_type_bit_mask()),
_use_colors(getenv("RUST_COLOR_LOG")),
_indent(0) {
}
rust_log::~rust_log() {
}
const uint16_t
hash(uintptr_t ptr) {
// Robert Jenkins' 32 bit integer hash function
ptr = (ptr + 0x7ed55d16) + (ptr << 12);
ptr = (ptr ^ 0xc761c23c) ^ (ptr >> 19);
ptr = (ptr + 0x165667b1) + (ptr << 5);
ptr = (ptr + 0xd3a2646c) ^ (ptr << 9);
ptr = (ptr + 0xfd7046c5) + (ptr << 3);
ptr = (ptr ^ 0xb55a4f09) ^ (ptr >> 16);
return (uint16_t) ptr;
}
const char *
get_color(uintptr_t ptr) {
return _foreground_colors[hash(ptr) % rust_log::LIGHTTEAL];
}
char *
copy_string(char *dst, const char *src, size_t length) {
return strncpy(dst, src, length) + length;
}
char *
append_string(char *buffer, const char *format, ...) {
if (buffer != NULL && format) {
va_list args;
va_start(args, format);
vsprintf(buffer + strlen(buffer), format, args);
va_end(args);
}
return buffer;
}
char *
append_string(char *buffer, rust_log::ansi_color color,
const char *format, ...) {
if (buffer != NULL && format) {
append_string(buffer, "\x1b%s", _foreground_colors[color]);
va_list args;
va_start(args, format);
vsprintf(buffer + strlen(buffer), format, args);
va_end(args);
append_string(buffer, "\x1b[0m");
}
return buffer;
}
void
rust_log::trace_ln(uint32_t thread_id, char *prefix, char *message) {
char buffer[1024] = "";
_log_lock.lock();
append_string(buffer, "%-34s", prefix);
for (uint32_t i = 0; i < _indent; i++) {
append_string(buffer, " ");
}
append_string(buffer, "%s", message);
if (_last_thread_id != thread_id) {
_last_thread_id = thread_id;
_srv->log("---");
}
_srv->log(buffer);
_log_lock.unlock();
}
void
rust_log::trace_ln(rust_task *task, char *message) {
#if defined(__WIN32__)
uint32_t thread_id = 0;
#else
uint32_t thread_id = hash((uint32_t) pthread_self());
#endif
char prefix[1024] = "";
if (_dom && _dom->name) {
append_string(prefix, "%04" PRIxPTR ":%.10s:",
thread_id, _dom->name);
} else {
append_string(prefix, "%04" PRIxPTR ":0x%08" PRIxPTR ":",
thread_id, (uintptr_t) _dom);
}
if (task) {
if (task->name) {
append_string(prefix, "%.10s:", task->name);
} else {
append_string(prefix, "0x%08" PRIxPTR ":", (uintptr_t) task);
}
}
trace_ln(thread_id, prefix, message);
}
/**
* Traces a log message if the specified logging type is not filtered.
*/
void
rust_log::trace_ln(rust_task *task, uint32_t type_bits, char *message) {
trace_ln(task, get_type_color((rust_log::log_type) type_bits),
type_bits, message);
}
/**
* Traces a log message using the specified ANSI color code.
*/
void
rust_log::trace_ln(rust_task *task, ansi_color color,
uint32_t type_bits, char *message) {
if (is_tracing(type_bits)) {
if (_use_colors) {
char buffer[512] = "";
append_string(buffer, color, "%s", message);
trace_ln(task, buffer);
} else {
trace_ln(task, message);
}
}
}
bool
rust_log::is_tracing(uint32_t type_bits) {
return type_bits & _type_bit_mask;
}
void
rust_log::indent() {
_indent++;
}
void
rust_log::outdent() {
_indent--;
}
void
rust_log::reset_indent(uint32_t indent) {
_indent = indent;
}
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