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utils.h
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/
utils.h
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#ifndef _UTILS_H
#define _UTILS_H
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <stdlib.h>
#include <unistd.h>
#include <uv.h>
#include <signal.h>
extern FILE * logfile;
#if __GNUC__ >= 3
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#else
#define likely(x) (x)
#define unlikely(x) (x)
#endif
#define TIME_FORMAT "%Y-%m-%d %H:%M:%S"
#define COLORDEF_GREEM \e[01;32m
#define COLORDEF_WHITE \e[0m
#define USE_LOGFILE(ident) \
do { \
if (ident != NULL) { logfile = fopen(ident, "w+"); } } \
while (0)
#define CLOSE_LOGFILE \
do { \
if (logfile != NULL) { fclose(logfile); } } \
while (0)
#define TRY_CLOSE(server_ctx, handle, cb) do { \
if (!uv_is_closing((uv_handle_t*) &server_ctx->remote_handle) \
&& !uv_is_closing((uv_handle_t*) &server_ctx->server_handle)) { \
uv_close((uv_handle_t*) handle, cb); \
} \
} while (0)
#define ERROR_UV(msg, code) do { \
fprintf(stderr, "%s: [%s: %s]\n", msg, uv_err_name((code)), uv_strerror((code))); \
assert(0); \
} while(0)
#define ERROR(msg) do { \
fprintf(stderr, "%s\n", msg); \
assert(0); \
} while(0)
#define _LOG(color, tag, format, ...) \
do { \
if (logfile != NULL) { \
time_t now = time(NULL); \
char timestr[20]; \
strftime(timestr, 20, TIME_FORMAT, localtime(&now)); \
fprintf(logfile, " %s " tag ": " format "\n", timestr, \
## __VA_ARGS__); \
fflush(logfile); \
} \
else { \
time_t now = time(NULL); \
char timestr[20]; \
strftime(timestr, 20, TIME_FORMAT, localtime(&now)); \
fprintf(stderr, color " %s " tag ": \e[0m" format "\n", timestr, \
## __VA_ARGS__); \
fflush(stderr); \
} \
} \
while (0)
#define LOGI(format, ...) \
do { \
time_t now = time(NULL); \
char timestr[20]; \
strftime(timestr, 20, TIME_FORMAT, localtime(&now)); \
fprintf(stderr, "\x1b[32m" " %s INFO: \e[0m" format "\n", timestr, \
## __VA_ARGS__); \
fflush(stderr); \
} \
while (0)
#define LOGD(format, ...) _LOG("\x1b[32m", "Debug", format, ##__VA_ARGS__)
#define LOGW(format, ...) _LOG("\x1b[33m", "Warning", format, ##__VA_ARGS__)
#define LOGE(format, ...) _LOG("\x1b[31m", "Error", format, ##__VA_ARGS__)
#define FATAL(format, ...) _LOG("\x1b[31m", "Fatal", format, ##__VA_ARGS__)
#define SHOW_BUFFER(buf, len) \
do { \
for (int i = 0; i<len;i++) \
putchar(buf[i]); \
} while (0)
#define LOG_SHOW_BUFFER(buf, len) \
do { \
if (logfile != NULL) { \
for (int i=0; i<len; i++) \
fprintf(logfile, "%c", buf[i]); \
fflush(logfile); \
} \
} while (0)
#define SHOW_BUFFER_IN_HEX(buf, len) \
do { \
for (int i=0; i<len; i++) \
printf("%x_",buf[i]); \
} while (0)
//packet related operations
#define set_header pkt_maker
#define set_payload pkt_maker
#define get_header pkt_access
#define get_payload pkt_access
#define get_id pkt_access_sid
#define pkt_maker(dest, src, len, offset) \
do { \
memcpy(dest + offset, src, len); \
offset += len; \
} while(0)
#define pkt_access(dest, src, len, offset) \
do { \
memcpy(dest, src + offset, len); \
offset += len; \
} while(0)
#define pkt_access_sid(ctx, dest, src, len, offset) \
do { \
pkt_access((dest), (src), (len), (offset)); \
(ctx)->packet.session_id = ntohl((uint32_t)ctx->packet.session_id); \
} while(0)
// built-in link list MACROs, originated from libcork
#define list_init(list) \
do { \
(list)->head.next = &(list)->head; \
(list)->head.prev = &(list)->head; \
} while (0)
#define list_add_after(prev, elem) \
do { \
(elem)->prev = (prev); \
(elem)->next = (prev)->next; \
(prev)->next->prev = (elem); \
(prev)->next = (elem); \
} while (0)
#define list_add_before(succ, elem) \
do { \
(elem)->prev = (succ)->prev; \
(elem)->next = (succ); \
(succ)->prev->next = (elem); \
(succ)->prev = (elem); \
} while (0)
#define list_add_to_tail(list, elem) \
list_add_before(&(list)->head, elem);
#define list_add_to_head(list, elem) \
list_add_after(&(list)->head, elem);
#define list_get_head_elem(list) \
(((list)->head.next == &(list)->head)? NULL: (list)->head.next)
#define list_remove_elem(elem) \
do { \
(elem)->prev->next = (elem)->next; \
(elem)->next->prev = (elem)->prev; \
} while (0)
#define list_get_start(list) \
((list)->head.next)
#define list_elem_is_end(list, element) \
((element) == &(list)->head)
void usage();
struct timeval GetTimeStamp();
void setup_signal_handler(uv_loop_t *loop);
void signal_handler(uv_signal_t *handle, int signum);
void init_daemon();
unsigned int hash(char *str);
#endif