Function riot_sys::msg_try_send

source ·

pub unsafe extern "C" fn msg_try_send(
    m: *mut msg_t,
    target_pid: kernel_pid_t
) -> c_int

Expand description

@brief Send a message (non-blocking).

This function sends a message to another thread. The msg_t structure has to be allocated (e.g. on the stack) before calling the function and can be freed afterwards. This function will never block.

@param[in] m Pointer to preallocated msg_t structure, must not be NULL. @param[in] target_pid PID of target thread

@return 1, if sending was successful (message delivered directly or to a queue) @return 0, if receiver is not waiting or has a full message queue @return -1, on error (invalid PID)