guard.hpp File Reference

#include <setjmp.h>
#include <exception>
#include <iostream>
#include <utility>
#include "error.hpp"
#include "exception.hpp"
#include "utils/function_traits.hpp"

Go to the source code of this file.

Classes
struct	cppgres::ffi_guard< Func >
struct	cppgres::scope_fail< Func >
	Scope guard that runs the callable only when the scope is left via an exception. More...
struct	cppgres::scope_exit< Func >
	Scope guard that always runs the callable on scope exit. More...
struct	cppgres::exception_guard< Func >
	Wraps a C++ function to catch exceptions and report them as Postgres errors. More...

Functions
template<typename Func >
void	cppgres::ffi_guard_noexcept (Func f, const char *warning_message) noexcept
	Runs a callable under cppgres::ffi_guard, degrading any failure to a warning.
template<typename Func >
	cppgres::scope_fail (Func, const char *) -> scope_fail< Func >
template<typename Func >
	cppgres::scope_exit (Func, const char *) -> scope_exit< Func >

Function Documentation

ffi_guard_noexcept()

template<typename Func >

void cppgres::ffi_guard_noexcept ( Func  f, const char *  warning_message  )

noexcept

Runs a callable under cppgres::ffi_guard, degrading any failure to a warning.

Catches every exception — including Postgres errors surfaced as cppgres::pg_exception — and reports the given message with elog(WARNING) instead of propagating. Intended for destructors and other cleanup paths where failure must degrade to a WARNING instead of propagating.

Parameters

f	callable to run
warning_message	message to report at WARNING level if the callable fails