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feat: 优化日志系统，添加日志器缓存机制

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你遇了我
2025-10-18 08:50:43 +08:00
parent c5c625f50e
commit 5540a9169a
7 changed files with 139 additions and 36 deletions
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2
include/logging.h
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@@ -66,7 +66,7 @@ Logger *newLogger(const char *name);
*/
Logger *getDefaultLogger(void);
Logger *getLogger(const char *name, log_level level);
Logger *getLogger(const char *name);
/**
* @brief 销毁日志对象,该方法会销毁默认日志对象

34
src/logging.c
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@@ -21,6 +21,8 @@
static Logger *ROOT_LOGGER = NULL; // 根日志对象，唯一实例
static Map *LOGGER_MAP = NULL; // 日志对象映射表
/**
* @brief 为日志添加一个handler
* @param handler 处理器对象
@@ -201,11 +203,17 @@ Logger *newLogger(const char *name) {
return NULL;
}
if (LOGGER_MAP == NULL) {
LOGGER_MAP = map_create(sizeof(Logger **));
}
logger->level = LOG_INFO;
logger->handler = loggingHandlerConsole();
logger->name = name;
logger->filter = NULL;
map_put(LOGGER_MAP, name, &logger);
return logger;
}
@@ -224,18 +232,28 @@ Logger *getDefaultLogger(void) {
* @param level 日志等级
* @return 日志器对象
*/
Logger *getLogger(const char *name, log_level level) {
Logger *getLogger(const char *name) {
if (name == NULL) {
return NULL;
}
if (LOGGER_MAP == NULL) {
LOGGER_MAP = map_create(sizeof(Logger **));
}
Logger **cache_logger_ptr = (Logger **)map_get(LOGGER_MAP, name);
if (cache_logger_ptr != NULL) {
return *cache_logger_ptr;
}
Logger *logger = (Logger *)malloc(sizeof(Logger));
logger->level = level;
logger->level = LOG_INFO;
logger->handler = loggingHandlerConsole();
logger->name = name;
logger->filter = NULL;
map_put(LOGGER_MAP, name, &logger);
return logger;
}
@@ -258,7 +276,17 @@ void destroyLogger(Logger *logger) {
}
}
static void
__destroyLoggerForeach(const char *key, void *value, void *user_data) {
(void)user_data;
(void)key;
destroyLogger(*(Logger **)value);
}
/**
* @brief 销毁日志对象
*/
void destroyDefaultLogger(void) { destroyLogger(ROOT_LOGGER); }
void destroyDefaultLogger(void) {
map_foreach(LOGGER_MAP, __destroyLoggerForeach, NULL);
map_destroy(LOGGER_MAP);
}

65
src/utils/logging-map.c
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@@ -15,9 +15,8 @@ static uint32_t hash_bytes(const void *data, size_t len) {
}
/* 创建空 map */
Map *map_create(size_t key_len, size_t value_len) {
Map *map_create(size_t value_len) {
Map *m = calloc(1, sizeof(*m));
m->key_len = key_len;
m->value_len = value_len;
m->bucket_cap = 8; /* 初始桶数 */
m->bucket = calloc(m->bucket_cap, sizeof(Node *));
@@ -25,15 +24,16 @@ Map *map_create(size_t key_len, size_t value_len) {
}
/* 根据 key 找到桶下标 */
static size_t bucket_index(Map *m, const void *key) {
uint32_t h = hash_bytes(key, m->key_len);
static size_t bucket_index(Map *m, const char *key) {
size_t len = strlen(key);
uint32_t h = hash_bytes(key, len);
return h & (m->bucket_cap - 1); /* 要求 bucket_cap 是 2 的幂 */
}
/* 在桶链中线性查找 */
static Node *find_in_chain(Node *head, const void *key, size_t key_len) {
static Node *find_in_chain(Node *head, const char *key) {
for (; head; head = head->next) {
if (memcmp(head->kv, key, key_len) == 0) {
if (strcmp(head->key, key) == 0) {
return head;
}
}
@@ -48,8 +48,9 @@ static void map_resize(Map *m) {
for (size_t i = 0; i < m->bucket_cap; ++i) {
Node *node = m->bucket[i];
while (node) {
Node *next = node->next;
size_t idx = hash_bytes(node->kv, m->key_len) & (new_cap - 1);
Node *next = node->next;
size_t idx =
hash_bytes(node->key, strlen(node->key)) & (new_cap - 1);
node->next = new_bucket[idx];
new_bucket[idx] = node;
node = next;
@@ -61,45 +62,47 @@ static void map_resize(Map *m) {
}
/* 插入或覆盖 */
void map_put(Map *m, const void *key, const void *value) {
void map_put(Map *m, const char *key, const void *value) {
if (m->size * 4 >= m->bucket_cap * 3) { /* 装载因子 0.75 */
map_resize(m);
}
size_t idx = bucket_index(m, key);
Node *node = find_in_chain(m->bucket[idx], key, m->key_len);
Node *node = find_in_chain(m->bucket[idx], key);
if (node) { /* 覆盖旧值 */
memcpy(node->kv + m->key_len, value, m->value_len);
memcpy(node->value, value, m->value_len);
return;
}
/* 新建节点 */
node = malloc(sizeof(*node));
node->kv = malloc(m->key_len + m->value_len);
node->next = m->bucket[idx];
memcpy(node->kv, key, m->key_len);
memcpy(node->kv + m->key_len, value, m->value_len);
node = malloc(sizeof(*node));
node->value = malloc(m->value_len);
node->next = m->bucket[idx];
node->key = malloc(strlen(key) + 1);
memcpy(node->key, key, strlen(key) + 1);
memcpy(node->value, value, m->value_len);
m->bucket[idx] = node;
++m->size;
}
/* 查找 */
void *map_get(Map *m, const void *key) {
void *map_get(Map *m, const char *key) {
size_t idx = bucket_index(m, key);
Node *node = find_in_chain(m->bucket[idx], key, m->key_len);
return node ? (node->kv + m->key_len) : NULL;
Node *node = find_in_chain(m->bucket[idx], key);
return node ? node->value : NULL;
}
/* 删除 */
bool map_erase(Map *m, const void *key) {
bool map_erase(Map *m, const char *key) {
size_t idx = bucket_index(m, key);
Node **link = &m->bucket[idx];
for (; *link; link = &(*link)->next) {
if (memcmp((*link)->kv, key, m->key_len) == 0) {
if (strcmp((*link)->key, key) == 0) {
Node *to_del = *link;
*link = to_del->next;
free(to_del->kv);
free(to_del->key);
free(to_del->value);
free(to_del);
--m->size;
return true;
@@ -114,11 +117,27 @@ void map_destroy(Map *m) {
Node *node = m->bucket[i];
while (node) {
Node *next = node->next;
free(node->kv);
free(node->key);
free(node->value);
free(node);
node = next;
}
}
free(m->bucket);
free(m);
}
/* 遍历 */
void map_foreach(Map *m,
void (*callback)(const char *key,
void *value,
void *user_data),
void *user_data) {
for (size_t i = 0; i < m->bucket_cap; ++i) {
Node *node = m->bucket[i];
while (node) {
callback(node->key, node->value, user_data);
node = node->next;
}
}
}

20
src/utils/logging-map.h
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@@ -7,11 +7,12 @@
typedef struct Node {
struct Node *next;
uint8_t *kv; /* key 在前 value 在后 */
char *key;
void *value;
} Node;
struct Map {
size_t key_len, value_len;
size_t value_len;
size_t bucket_cap;
size_t size; /* 当前元素个数 */
Node **bucket; /* 指针数组 */
@@ -20,16 +21,23 @@ struct Map {
typedef struct Map Map;
/* 创建空 map：key_len/value_len 以字节为单位 */
Map *map_create(size_t key_len, size_t value_len);
Map *map_create(size_t value_len);
/* 插入或覆盖：<key> 必须指向 key_len 字节；同理 value */
void map_put(Map *m, const void *key, const void *value);
void map_put(Map *m, const char *key, const void *value);
/* 查找：找到返回 value 指针；未找到返回 NULL */
void *map_get(Map *m, const void *key);
void *map_get(Map *m, const char *key);
/* 删除：返回 true 表示确实删掉了 */
bool map_erase(Map *m, const void *key);
bool map_erase(Map *m, const char *key);
/* 遍历: 遍历所有元素*/
void map_foreach(Map *m,
void (*callback)(const char *key,
void *value,
void *user_data),
void *user_data);
/* 销毁并释放所有内存 */
void map_destroy(Map *m);

4
tests/CMakeLists.txt
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@@ -20,6 +20,10 @@ add_executable(${PROJECT_NAME}filter test-filter.c)
target_link_libraries(${PROJECT_NAME}filter logging)
add_test(test_filter ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}filter${CMAKE_EXECUTEABLE_SUFFIX})
#测试多log多次获取
add_executable(${PROJECT_NAME}logs test-logs.c)
target_link_libraries(${PROJECT_NAME}logs logging)
add_test(test_logs ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}logs${CMAKE_EXECUTEABLE_SUFFIX})
#测试工具map
add_executable(${PROJECT_NAME}map test-map.c)

24
tests/test-logs.c Normal file
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@@ -0,0 +1,24 @@
#include "logging.h"
#include "logging/logging-core.h"
#include <stdio.h>
int main() {
Logger *t1 = getLogger("Test1");
t1->level = LOG_ERROR;
Logger *t2 = getLogger("Test2");
t2->level = LOG_DEBUG;
Logger *t11 = getLogger("Test1");
if (t1 == t11) {
printf("t1 and t11 are the same\n");
printf("t1 log level: %s", LOG_LEVEL_STR[t11->level]);
} else {
printf("t1 and t11 are different\n");
return 1;
}
destroyDefaultLogger();
return 0;
}

26
tests/test-map.c
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@@ -1,17 +1,37 @@
#include "utils/logging-map.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void foreach_callback(const char *key, void *value, void *user_data) {
(void)user_data;
printf("foreach key: %s, value: %d\n", key, *(int *)value);
}
int main(int argc, char *argv[]) {
(void)argc;
(void)argv;
Map *map = map_create(0, sizeof(int));
Map *map = map_create(sizeof(int));
const char *keys[] = {"key1", "key2", "key3", "key4", "key5"};
const char *keys[] = {"key1", "key22", "key33", "key44", "key55"};
for (int i = 0; i < 5; i++) {
printf("put key %s,value %d\n", keys[i], i);
map_put(map, keys[i], &i);
}
for (int i = 0; i < 5; i++) {
int *value = map_get(map, keys[i]);
printf("get value: %d\n", *value);
if (*value != i) {
return 1;
}
}
map_foreach(map, foreach_callback, NULL);
map_destroy(map);
return 0;
}
}