在C语言项目中有效进行异常处理机制(最新推荐)

c#define SUCCESS 0#define ERROR_NOMEM -1#define ERROR_INVALID_ARG -2int someFunction(int arg)
{if (arg < 0) {return ERROR_INVALID_ARG;}// ... 函数逻辑return SUCCESS;}

ctypedef struct
{int errorCode;const char* errorMessage;} ErrorInfo;
thread_local ErrorInfo currentError = {0, NULL};void setError(int code, const char* msg)
{currentError.errorCode = code;currentError.errorMessage = msg;}
int someFunction() {if (/* 某种错误条件 */)
{setError(ERROR_NOMEM, "Memory allocation failed");
return ERROR_NOMEM;}// ... 函数逻辑return SUCCESS;}

cvoid someFunction() {int* ptr = malloc(100 * sizeof(int));if (!ptr) {setError(ERROR_NOMEM, "Memory allocation failed");return ERROR_NOMEM;}// 函数逻辑if (/* 检测到错误 */) {free(ptr); // 清理资源setError(ERROR_SOME_OTHER_ERROR, "Some other error occurred");return ERROR_SOME_OTHER_ERROR;}// 正常结束，释放资源free(ptr);return SUCCESS;}

cvoid someFunction()
{int* ptr = malloc(100 * sizeof(int));
if (!ptr)
{setError(ERROR_NOMEM, "Memory allocation failed");
return ERROR_NOMEM;}// 函数逻辑if (/* 检测到错误 */)
{goto cleanup;}// 正常结束
return SUCCESS;cleanup:free(ptr); // 清理资源
setError(ERROR_SOME_OTHER_ERROR, "Some other error occurred");
return ERROR_SOME_OTHER_ERROR;}

cint readFile(const char* filename, char** content, size_t* length) {// 打开文件，读取内容，分配内存给*content，设置*lengthif (/* 错误 */) {setError(ERROR_FILE_NOT_FOUND, "File not found");return ERROR_FILE_NOT_FOUND;}// ...return SUCCESS;}

cvoid logError(const char* msg)
{// 将错误信息记录到日志文件或标准错误输出fprintf(stderr, "Error: %s\n", msg);}
void someFunction()
{if (/* 错误条件 */)
{setError(ERROR_NOMEM, "Memory allocation failed");
logError(currentError.errorMessage);
return ERROR_NOMEM;}// ...}