fd_limit.hpp File Reference

#include <algorithm>
#include <cerrno>
#include <cstdint>
#include <cstring>
#include <fstream>
#include <optional>
#include <string>
#include <sys/resource.h>
#include <sys/time.h>

Go to the source code of this file.

Classes
struct	Mads::detail::FdLimits
struct	Mads::detail::FdLimitPlan
struct	Mads::detail::FdLimitOutcome
	The result of acting on a plan. More...

Namespaces
namespace	Mads
namespace	Mads::detail
namespace	Mads::detail::fd_limit_impl

Functions
uint64_t	Mads::detail::agent_capacity (uint64_t soft)
	How many agents a given soft limit leaves room for.
std::optional< uint64_t >	Mads::detail::fd_limit_impl::read_uint_file (const char *path)
	Reads a single unsigned integer out of a /proc or /sys file.
std::optional< uint64_t >	Mads::detail::fd_limit_impl::kernel_fd_ceiling ()
FdLimits	Mads::detail::query_fd_limits ()
	Reads the limits currently in force, with hard clamped as described above.
std::string	Mads::detail::describe_fd_limits (const FdLimits &limits)
	Renders e.g. "1024 soft / 1048576 hard, about 492 agents".
std::string	Mads::detail::fd_limit_hint ()
	The hint appended to every message that reports a limit worth raising.
FdLimitPlan	Mads::detail::plan_fd_limit (std::optional< int64_t > requested, const FdLimits &limits)
FdLimitOutcome	Mads::detail::apply_fd_limit (const FdLimitPlan &plan)
bool	Mads::detail::is_fd_exhaustion (int err)

Variables
constexpr uint64_t	Mads::detail::FD_PER_AGENT = 2
constexpr uint64_t	Mads::detail::FD_BROKER_OVERHEAD = 64
constexpr uint64_t	Mads::detail::FD_LOW_WATERMARK = 1024
constexpr uint64_t	Mads::detail::FD_ABSOLUTE_CEILING = 1048576