pmclog_pmcattach
PMCLOG_GET_PATHLEN(pathlen,evlen,pmclog_pmcattach);
recordlen = offsetof(struct pmclog_pmcattach, pl_pathname) + pathlen;
CTASSERT(sizeof(struct pmclog_pmcattach) == 5*4 + PATH_MAX + TSDELTA);
CTASSERT(offsetof(struct pmclog_pmcattach,pl_pathname) == 5*4 + TSDELTA);
struct pmclog_pmcattach pl_t;