Windows/Linux通用c语言日志log库(零依赖)
#ifndef __CLOG_H__ #define __CLOG_H__ #if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) /////////////////////////////////////////////////////////////////////////// // Disable all warning: _CRT_SECURE_NO_WARNINGS #pragma warning(disable:4996) #include <io.h> #include <stdio.h> #include <fcntl.h> #include <stdarg.h> #include <sys/types.h> #include <sys/stat.h> #include <string.h> #include <direct.h> #define __off_t _off_t #define F_OK 0 #define O_APPEND _O_APPEND #define O_CREAT _O_CREAT #define O_WRONLY _O_WRONLY #define O_CLOEXEC _O_NOINHERIT #define DEFFILEMODE 0666 //#define DEFFILEMODE _S_IREAD | _S_IWRITE #define strcasecmp stricmp #define sys_get_tid() ::GetCurrentThreadId() #define PATH_SEPARATOR "/" #define PATH_SEPARATOR_CHAR '/' #define make_dir(x) mkdir(x) #define LOG_STDOUT_FILENO fileno(stdout) // For windows implementation of "gettimeofday" #if defined(_WIN32) || defined(WIN32) #include <time.h> #include <WinSock2.h> //I've ommited this line. #if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) #define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64 #else #define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL #endif struct timezone { int tz_minuteswest; /* minutes W of Greenwich */ int tz_dsttime; /* type of dst correction */ }; __inline static int gettimeofday(struct timeval* tv, struct timezone* tz) { FILETIME f = { 0 }; static char _tz = 0x00; #if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) unsigned long long u = 0Ui64; #else unsigned long long u = 0ULL; #endif if (tv) { #ifdef _WIN32_WCE SYSTEMTIME s = { 0 }; ::GetSystemTime(&s); ::SystemTimeToFileTime(&s, &f); #else ::GetSystemTimeAsFileTime(&f); #endif u |= f.dwHighDateTime; u <<= 32; u |= f.dwLowDateTime; //convert into microseconds u /= 10; //converting file time to unix epoch u -= DELTA_EPOCH_IN_MICROSECS; tv->tv_sec = (long)(u / 1000000UL); tv->tv_usec = (long)(u % 1000000UL); } if (tz) { if (_tz == 0x00) { _tzset(); _tz = 0x01; } tz->tz_minuteswest = _timezone / 60; tz->tz_dsttime = _daylight; } return 0; } #endif /*static CRITICAL_SECTION log_locker = { 0 }; #define log_init_lock() InitializeCriticalSection(&log_locker) #define log_lock() EnterCriticalSection(&log_locker) #define log_unlock() LeaveCriticalSection(&log_locker) #define log_exit_lock() DeleteCriticalSection(&log_locker)*/ #else /////////////////////////////////////////////////////////////////////////// #include <stdarg.h> #include <unistd.h> #include <malloc.h> #include <string.h> #include <errno.h> #include <time.h> #include <pthread.h> #include <sys/fcntl.h> #include <sys/stat.h> #include <sys/time.h> #include <sys/syscall.h> #define sys_get_tid() syscall(SYS_gettid) #define PATH_SEPARATOR "/" #define PATH_SEPARATOR_CHAR '/' #define make_dir(x) mkdir(x, DEFFILEMODE) #define LOG_STDOUT_FILENO STDOUT_FILENO /*static pthread_mutex_t log_locker; #define log_init_lock() pthread_mutex_init(&log_locker,0) #define log_lock() pthread_mutex_lock(&log_locker) #define log_unlock() pthread_mutex_unlock(&log_locker) #define log_exit_lock() pthread_mutex_destroy(&log_locker)*/ #endif #define MAX_LOG_PATH 4096 #define DATA_SIZE 102400 #define DAY_SECONDS 86400 #define DEFAULT_LOG_ROTATETIME DAY_SECONDS #define DEFAULT_LOG_LIMIT_SIZE 10*1024*1024 #define DEFAULT_LOG_FMT "" #define DEFAULT_LOG_EXT ".log" #define DEFAULT_LOG_PATH "." PATH_SEPARATOR #define DEFAULT_LOG_CONS 0xFF #define NEED_LOG_CONS(X) (X!=0x00) #define LOG_FILE_FORMAT "%Y-%m-%d %H:%M:%S" #define LOG_LR '\r' #define LOG_CF '\n' #pragma pack (1) struct log_arg { int fd; long num; long idx; time_t ftime; char fname[64]; char lname[MAX_LOG_PATH]; long size; char* data; }; struct log_set { long args; int level; char ext[8]; char fmt[64]; __off_t limit; long rotatetime; unsigned char cons; char path[MAX_LOG_PATH]; struct log_arg* argl; }; #pragma pack () #if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) #define __CLOG_GLOBAL_MACROS_DEFINE__ static CRITICAL_SECTION log_locker = { 0 };static struct log_set* p_log_set = 0; #define __CLOG_GLOBAL_MACROS_EXTERN__ extern CRITICAL_SECTION log_locker;extern struct log_set* p_log_set; #define log_init_lock() InitializeCriticalSection(&log_locker) #define log_lock() EnterCriticalSection(&log_locker) #define log_unlock() LeaveCriticalSection(&log_locker) #define log_exit_lock() DeleteCriticalSection(&log_locker) #else #define __CLOG_GLOBAL_MACROS_DEFINE__ static pthread_mutex_t log_locker;static struct log_set* p_log_set = 0; #define __CLOG_GLOBAL_MACROS_EXTERN__ extern pthread_mutex_t log_locker;extern struct log_set* p_log_set; #define log_init_lock() pthread_mutex_init(&log_locker,0) #define log_lock() pthread_mutex_lock(&log_locker) #define log_unlock() pthread_mutex_unlock(&log_locker) #define log_exit_lock() pthread_mutex_destroy(&log_locker) #endif __CLOG_GLOBAL_MACROS_DEFINE__ __CLOG_GLOBAL_MACROS_EXTERN__ enum log_level_type { LOG_NONE = 0, LOG_FATAL, LOG_ERROR, LOG_WARN, LOG_INFO, LOG_DEBUG, LOG_TRACE, LOG_VERBOSE, LOG_MAX, }; #define IS_VALID_LOG_LEVEL_TYPE(X) (X > LOG_NONE && X < LOG_MAX) static const char* p_log_level_name[LOG_MAX] = { "NONE", "FATAL", "ERROR", "WARN", "INFO", "DEBUG", "TRACE", "VERBOSE" }; #define NONE_COLOR "\033[00m" static const char* p_log_level_color[LOG_MAX] = { "\033[30m", "\033[31m", "\033[32m", "\033[33m", "\033[34m", "\033[35m", "\033[36m", "\033[37m" }; __inline static time_t get_log_rotatetime() { return p_log_set->rotatetime; } __inline static const char* get_log_path() { return p_log_set->path; } __inline static const char* get_log_ext() { return p_log_set->ext; } __inline static const char* get_log_fmt() { return p_log_set->fmt; } __inline static __off_t get_log_limit() { return p_log_set->limit; } __inline static int get_log_top_level() { return p_log_set->level; } __inline static unsigned char get_log_cons() { return p_log_set->cons; } __inline static const char* get_log_level_name(int level) { return p_log_level_name[level]; } __inline static const char* get_log_level_color(int level) { return p_log_level_color[level]; } __inline static const char* get_log_level_color_end() { return NONE_COLOR; } __inline static struct log_arg* get_log_arg(const char* fname) { for (long i = 0; i < p_log_set->args; i++) { if (strcasecmp(p_log_set->argl[i].fname, fname) == 0) { return &p_log_set->argl[i]; } } return (0); } __inline static int exit_log() { if (p_log_set) { if (p_log_set->argl) { for (long i = 0; i < p_log_set->args; i++) { if (p_log_set->argl[i].fd != (-1)) { close(p_log_set->argl[i].fd); p_log_set->argl[i].fd = (-1); } if (p_log_set->argl[i].data != 0) { free(p_log_set->argl[i].data); p_log_set->argl[i].data = 0; } } free(p_log_set->argl); p_log_set->argl = (0); } free(p_log_set); p_log_set = (0); } log_exit_lock(); return 0; } __inline static struct log_set* init_log(const char* path, const char* fmt, const char* ext, unsigned char cons, long rotatetime, int level, long limit, const struct log_arg* pargl, unsigned long args) { char* p = 0; int nCount = 0; time_t log_secs = 0; struct tm* tm_log = 0; struct timeval tv = { 0 }; struct timezone tz = { 0 }; char lname[MAX_LOG_PATH] = { 0 }; char tpath[MAX_LOG_PATH] = { 0 }; char lpath[MAX_LOG_PATH] = { 0 }; size_t path_len = strlen(path); size_t tpath_size = sizeof(tpath) / sizeof(*tpath); log_init_lock(); if (p_log_set == 0) { p_log_set = (struct log_set*)malloc(sizeof(struct log_set)); if (p_log_set == 0) { exit_log(); return (0); } } for (size_t i = 0; i < path_len && i < tpath_size; i++) { if (path[i] == '\\') { tpath[i] = '/'; } else { tpath[i] = path[i]; } } if (tpath[strlen(tpath) - 1] != '/') { tpath[strlen(tpath)] = '/'; } p = (char*)tpath; while (((p = strchr((char*)tpath + (p - tpath), PATH_SEPARATOR_CHAR)) != 0)) { snprintf(lpath, sizeof(lpath) / sizeof(*lpath), "%.*s\0", (int)((++p) - tpath), tpath); make_dir(lpath); } snprintf(p_log_set->path, sizeof(p_log_set->path) / sizeof(*(p_log_set->path)), "%s\0", (tpath != 0) ? (tpath) : DEFAULT_LOG_PATH); if ((p_log_set->path[strlen(p_log_set->path) - 1] != PATH_SEPARATOR_CHAR)) { p_log_set->path[strlen(p_log_set->path)] = PATH_SEPARATOR_CHAR; } snprintf(p_log_set->fmt, sizeof(p_log_set->fmt) / sizeof(*(p_log_set->fmt)), "%s\0", (fmt != 0) ? (fmt) : ""); snprintf(p_log_set->ext, sizeof(p_log_set->ext) / sizeof(*(p_log_set->ext)), "%s\0", (tpath != 0) ? (ext) : DEFAULT_LOG_EXT); p_log_set->level = IS_VALID_LOG_LEVEL_TYPE(level) ? level : LOG_VERBOSE; p_log_set->limit = limit > 0 ? limit : DEFAULT_LOG_LIMIT_SIZE; p_log_set->cons = cons; p_log_set->args = args; p_log_set->rotatetime = rotatetime > 0 ? rotatetime : DAY_SECONDS; p_log_set->argl = (struct log_arg*)malloc(p_log_set->args * sizeof(struct log_arg)); if (p_log_set->argl == 0) { exit_log(); return (0); } memset(p_log_set->argl, 0, p_log_set->args * sizeof(struct log_arg)); gettimeofday(&tv, &tz); log_secs = tv.tv_sec; log_secs -= log_secs % p_log_set->rotatetime; for (long i = 0; i < p_log_set->args; i++) { nCount = 0; memcpy(&p_log_set->argl[i], &pargl[i], sizeof(struct log_arg)); p_log_set->argl[i].data = (char*)malloc(p_log_set->argl[i].size); if (p_log_set->argl[i].data == 0) { exit_log(); return (0); } nCount += snprintf(lname + nCount, sizeof(lname) / sizeof(*lname), "%s%s\0", p_log_set->path, p_log_set->argl[i].fname); if (*p_log_set->fmt) { tm_log = localtime(&log_secs); nCount += (int)(strftime(lname + nCount, sizeof(lname) / sizeof(*lname), p_log_set->fmt, tm_log)); } p_log_set->argl[i].ftime = log_secs; nCount += snprintf(lname + nCount, sizeof(lname) / sizeof(*lname), "%s\0", p_log_set->ext); snprintf(p_log_set->argl[i].lname, sizeof(p_log_set->argl[i].lname) / sizeof(*p_log_set->argl[i].lname), "%s\0", lname); for (long n = 0; n < p_log_set->argl[i].num; n++) { snprintf(lname, sizeof(lname) / sizeof(*lname), "%s.%d\0", p_log_set->argl[i].lname, n); if (access(lname, F_OK) != 0) { p_log_set->argl[i].idx = (n + 1); p_log_set->argl[i].idx %= (p_log_set->argl[i].num + 1); p_log_set->argl[i].idx = (p_log_set->argl[i].idx <= 0) ? 1 : p_log_set->argl[i].idx; break; } } p_log_set->argl[i].fd = open(p_log_set->argl[i].lname, O_APPEND | O_CREAT | O_WRONLY | O_CLOEXEC, DEFFILEMODE); if (p_log_set->argl[i].fd == (-1)) { printf("%d,%s\n", errno, strerror(errno)); exit_log(); return (0); } } return (p_log_set); } __inline static int check_log(struct log_arg* pla, time_t now_secs) { int nCount = 0; time_t fsecs = 0; struct stat st = { 0 }; __off_t limit = get_log_limit(); const char* ext = get_log_ext(); const char* fmt = get_log_fmt(); char lname[MAX_LOG_PATH] = { 0 }; const char* path = get_log_path(); fsecs = now_secs - now_secs % get_log_rotatetime(); if (pla->ftime != fsecs) { pla->ftime = fsecs; nCount += snprintf(lname + nCount, sizeof(lname) / sizeof(*lname), "%s%s\0", path, pla->fname); if (*fmt) { nCount += (int)(strftime(lname + nCount, sizeof(lname) / sizeof(*lname), fmt, localtime(&fsecs))); nCount += snprintf(lname + nCount, sizeof(lname) / sizeof(*lname), "%s\0", ext); close(pla->fd); snprintf(pla->lname, sizeof(pla->lname) / sizeof(*pla->lname), "%s\0", lname); int fd = open(pla->lname, O_APPEND | O_CREAT | O_WRONLY | O_CLOEXEC, DEFFILEMODE); if (fd == (-1)) { pla->fd = (-1); printf("open log file %s failed. msg: (errno=%d)%s\n", pla->fname, errno, strerror(errno)); return (-1); } dup2(fd, pla->fd); if (fd != pla->fd) { close(fd); } } else { if (pla->num > 0) { pla->idx %= (pla->num + 1); pla->idx = (pla->idx <= 0) ? 1 : pla->idx; } snprintf(lname, sizeof(lname) / sizeof(*lname), "%s.%d\0", pla->lname, pla->idx++); close(pla->fd); unlink(lname); if (rename(pla->lname, lname) != 0) { pla->fd = (-1); printf("rename logfile %s -> %s failed msg: (errno=%d)%s\n", pla->lname, lname, errno, strerror(errno)); return (-1); } int fd = open(pla->lname, O_APPEND | O_CREAT | O_WRONLY | O_CLOEXEC, DEFFILEMODE); if (fd == (-1)) { pla->fd = (-1); printf("open log file %s failed. msg: (errno=%d)%s\n", pla->fname, errno, strerror(errno)); return (-1); } dup2(fd, pla->fd); if (fd != pla->fd) { close(fd); } } } else { if (fstat(pla->fd, &st) == (-1)) { switch (errno) { case ENOENT: { nCount += snprintf(lname + nCount, sizeof(lname) / sizeof(*lname), "%s%s\0", path, pla->fname); if (*fmt) { nCount += (int)(strftime(lname + nCount, sizeof(lname) / sizeof(*lname), fmt, localtime(&now_secs))); } nCount += snprintf(lname + nCount, sizeof(lname) / sizeof(*lname), "%s\0", ext); snprintf(pla->lname, sizeof(pla->lname) / sizeof(*pla->lname), "%s\0", lname); pla->fd = open(pla->lname, O_APPEND | O_CREAT | O_WRONLY | O_CLOEXEC, DEFFILEMODE); if (pla->fd == (-1)) { printf("open log file %s failed. msg: (errno=%d)%s\n", pla->fname, errno, strerror(errno)); return (-1); } } break; default: { printf("stat log file %s failed. msg: (errno=%d)%s\n", pla->fname, errno, strerror(errno)); return (-1); } break; } } else { if (st.st_size + pla->size >= limit) { if (pla->num > 0) { pla->idx %= (pla->num + 1); pla->idx = (pla->idx <= 0) ? 1 : pla->idx; } snprintf(lname, sizeof(lname) / sizeof(*lname), "%s.%d\0", pla->lname, pla->idx++); close(pla->fd); unlink(lname); if (rename(pla->lname, lname) != 0) { pla->fd = (-1); printf("rename logfile %s -> %s failed msg: (errno=%d)%s\n", pla->lname, lname, errno, strerror(errno)); return (-1); } int fd = open(pla->lname, O_APPEND | O_CREAT | O_WRONLY | O_CLOEXEC, DEFFILEMODE); if (fd == (-1)) { pla->fd = (-1); printf("open log file %s failed. msg: (errno=%d)%s\n", pla->fname, errno, strerror(errno)); return (-1); } dup2(fd, pla->fd); if (fd != pla->fd) { close(fd); } } } } return (0); } __inline static int log(const char* fname, int level, const char* fmt, ...) { va_list arg; int data_len = 0; long tt_now_usecs = 0; struct stat st = { 0 }; struct tm* tm_now = 0; time_t tt_now_secs = 0; struct log_arg* pla = 0; struct timeval tv = { 0 }; struct timezone tz = { 0 }; char date_time[128] = { 0 }; // 若level大于指定的level,则不打印日志信息 if (level > get_log_top_level()) { return (-1); } if ((pla = get_log_arg(fname)) == 0) { return (-1); } log_lock(); memset(pla->data, 0, pla->size); gettimeofday(&tv, &tz); tt_now_secs = tv.tv_sec; tt_now_usecs = tv.tv_usec; tm_now = localtime(&tt_now_secs); strftime(date_time, sizeof(date_time) / sizeof(*date_time), LOG_FILE_FORMAT, tm_now); data_len += snprintf(pla->data + data_len, pla->size, "%s[%s.%ld][%ld][%C]\0", get_log_level_color(level), date_time, tt_now_usecs, sys_get_tid(), *get_log_level_name(level)); va_start(arg, fmt); data_len += vsnprintf(pla->data + data_len, pla->size, fmt, arg); va_end(arg); if (LOG_CF == pla->data[data_len - 1]) { data_len--; if (LOG_LR == pla->data[data_len - 1]) { data_len--; } } data_len += snprintf(pla->data + data_len, pla->size, "%s\n\0", get_log_level_color_end()); check_log(pla, tt_now_secs); write(pla->fd, pla->data, data_len); if (NEED_LOG_CONS(get_log_cons())) { //printf("%.*s", data_len, data); write(LOG_STDOUT_FILENO, pla->data, data_len); } log_unlock(); return (0); } //#define LOG(NAME,LEVEL,FMT...) log(#NAME,LEVEL,##FMT) #define LOG(NAME,LEVEL,FMT,...) log(#NAME,LEVEL,FMT,##__VA_ARGS__) ///////////////////////////////////////////////////////////////////////////////////////////////// __inline static #if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) DWORD #else void* #endif log_task(void* p) { for (size_t i = 0; i < 1000; i++) { log("main", LOG_INFO, "%s(%d)\n", "I am test!!!!!!", i); LOG(main, LOG_WARN, "%s(%d)\n", "I am test!!!!!!", i); LOG(main, LOG_TRACE, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_ERROR, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_FATAL, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_WARN, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_TRACE, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_DEBUG, "%s(%d)\n", "I am test!!!!!!", i); log("main1", LOG_INFO, "%s(%d)\n", "I am test!!!!!!", i); LOG(main1, LOG_WARN, "%s(%d)\n", "I am test!!!!!!", i); LOG(main1, LOG_TRACE, "%s(%d)\n", "I am test!!!!!!", i); log("main1", LOG_ERROR, "%s(%d)\n", "I am test!!!!!!", i); log("main1", LOG_FATAL, "%s(%d)\n", "I am test!!!!!!", i); log("main1", LOG_WARN, "%s(%d)\n", "I am test!!!!!!", i); log("main1", LOG_TRACE, "%s(%d)\n", "I am test!!!!!!", i); log("main1", LOG_DEBUG, "%s(%d)\n", "I am test!!!!!!", i); #if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) //_sleep(1000); } return (0); #else usleep(1000000); } pthread_exit(0); return (void*)(0); #endif } __inline static int log_test_init() { const struct log_arg largl[] = { {-1,30,0,0,"main","", DATA_SIZE, 0}, //{-1,30,0,0,"main1","", DATA_SIZE, 0}, }; long n_rotatetime = 10;//DEFAULT_LOG_ROTATETIME const char* log_fmt = "%Y%m%d%H%M%S";// DEFAULT_LOG_FMT; init_log(DEFAULT_LOG_PATH, log_fmt, DEFAULT_LOG_EXT, DEFAULT_LOG_CONS, n_rotatetime, LOG_VERBOSE, DEFAULT_LOG_LIMIT_SIZE, largl, sizeof(largl) / sizeof(*largl)); return 0; } /////////////////////////////////////////////////////////////////////////////////////////////////////// // // >>>>>> copy the content to main.c/main.cpp and build <<<<<< // // #include <stdio.h> // #include "clog.h" // // int main(int argc, char ** argv) // { // printf("hello from clog_test!\n"); // // log_test_main(); // // return 0; // } /////////////////////////////////////////////////////////////////////////////////////////////////////// __inline static int log_test_main() { const struct log_arg largl[] = { {-1,30,0,0,"main","", DATA_SIZE, 0}, {-1,30,0,0,"main1","", DATA_SIZE, 0}, }; long n_rotatetime = 10;//DEFAULT_LOG_ROTATETIME const char* log_fmt = "%Y%m%d%H%M%S";// DEFAULT_LOG_FMT; init_log(DEFAULT_LOG_PATH, log_fmt, DEFAULT_LOG_EXT, DEFAULT_LOG_CONS, n_rotatetime, LOG_VERBOSE, DEFAULT_LOG_LIMIT_SIZE, largl, sizeof(largl) / sizeof(*largl)); for (size_t i = 0; i < 100; i++) { LOG(main, LOG_INFO, "%s(%d)\n", "I am test!!!!!!", i); LOG(main1, LOG_INFO, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_ERROR, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_FATAL, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_WARN, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_TRACE, "%s(%d)\n", "I am test!!!!!!", i); log("main", LOG_DEBUG, "%s(%d)\n", "I am test!!!!!!", i); log("main1", LOG_INFO, "%s(%d)\n", "I am test!!!!!!", i); } int ret = 0; #if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) DWORD t[4] = { 0 }; HANDLE h[4] = { 0 }; for (int i = 0; i < sizeof(t) / sizeof(*t); i++) { h[i] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)log_task, 0, 0, &t[i]); } getchar(); WaitForMultipleObjects(sizeof(t) / sizeof(*t), h, TRUE, INFINITE); #else pthread_t t[4] = { 0 }; for (int i = 0; i < sizeof(t) / sizeof(*t); i++) { ret = pthread_create(&t[i], 0, log_task, 0); } getchar(); for (int i = 0; i < sizeof(t) / sizeof(*t); i++) { pthread_join(t[i], 0); } #endif exit_log(); return 0; } #endif // __CLOG_H__
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