futex.hpp File Reference

Cross-platform futex-like synchronization primitives. More...

#include <cstdint>
#include <ctime>
#include <cerrno>
#include <linux/futex.h>
#include <sys/syscall.h>
#include <unistd.h>

Go to the source code of this file.

Namespaces
namespace	bb
	Entry point for Barretenberg command-line interface.
namespace	bb::ipc

Functions
int	bb::ipc::futex_wait (volatile uint32_t *addr, uint32_t expect)
	Atomic compare-and-wait operation.
int	bb::ipc::futex_wait_timeout (volatile uint32_t *addr, uint32_t expect, uint64_t timeout_ns)
	Atomic compare-and-wait operation with timeout.
int	bb::ipc::futex_wake (volatile uint32_t *addr, int n)
	Wake waiters blocked on an address.

Detailed Description

Cross-platform futex-like synchronization primitives.

Provides unified wait/wake operations for cross-process synchronization:

• macOS: Uses os_sync_wait_on_address / os_sync_wake_by_address_any
• Linux: Uses futex syscalls

Definition in file futex.hpp.