default_error_handler error_handler_errno MEOS_ERR_NO meos_errno meos_errno_reset meos_errno_restore meos_errno_set meos_error MEOS_ERROR_HANDLER meos_error_handler_t meos_initialize_error_handler

MEOS_ERR_NO MEOS_TLS int MEOS_ERR_NO = 0 static Per-thread variable that keeps the last error number. Mirrors the libc errno convention: each thread sees its own value, so concurrent MEOS calls from multiple threads do not race on the error status.