ErrnoException

Exception class which reads, stores and resets the thread-local errno

class ErrnoException : Exception {

template ReusableExceptionImplementation() via import ocean.core.Exception : ReusableExceptionImplementation;;

template ReturnTypeOf(Callable...) via import ocean.meta.types.Function : ReturnTypeOf;;

import ocean.meta.codegen.Identifier;;

import ocean.text.util.StringC;;

import core.stdc.string;;

mixin ReusableExceptionImplementation!() ReusableImpl;

int errorNumber();

istring failedFunctionName();

void enforce(bool expr, cstring msg, istring name, istring file, int line);

Caller!(typeof(&Func)) enforceRet(bool function(ReturnTypeOf!(Func)) verify, istring file, int line);

Caller!(typeof(&Func)) enforceRetPtr(istring file, int line);

Caller!(typeof(&Func)) enforceRetCode(istring file, int line);

typeof(this) useGlobalErrno(istring name, istring file, int line);

typeof(this) set(int err_num, istring name, istring file, int line);

typeof(this) addMessage(cstring msg);

}

Members

Functions

addMessage typeof(this) addMessage(cstring msg): Convenience method to append extra message in brackets
enforce void enforce(bool expr, cstring msg, istring name, istring file, int line): Tries to evaluate expr. If it fails, checks the global errno and uses matching message as base for exception message, as well as throws the exception.
enforceRet Caller!(typeof(&Func)) enforceRet(bool function(ReturnTypeOf!(Func)) verify, istring file, int line): Calls Func automatically checking errno and storing name
enforceRetCode Caller!(typeof(&Func)) enforceRetCode(istring file, int line): Calls enforceRet interpreting return value as error code
enforceRetPtr Caller!(typeof(&Func)) enforceRetPtr(istring file, int line): Calls enforceRet expecting Func to return non-NULL
errorNumber int errorNumber()
failedFunctionName istring failedFunctionName()
set typeof(this) set(int err_num, istring name, istring file, int line): Initializes local reusable error message based on supplied errno value
useGlobalErrno typeof(this) useGlobalErrno(istring name, istring file, int line): Initializes local reusable error message based on global errno value and resets errno to 0.

Mixins

ReusableImpl mixin ReusableExceptionImplementation!() ReusableImpl: Provides standard reusable exception API

Meta

Source

See Implementation

ocean sys ErrnoException classes

ErrnoException

structs

Caller