Apache中多任务并发处理机制研究(1)

if (sb_type == SB_SHARED) {

void *sb_shared;

rv = open_scoreboard(p);

if (rv || !(sb_shared = apr_shm_baseaddr_get(ap_scoreboard_shm))) {

return HTTP_INTERNAL_SERVER_ERROR;

}

memset(sb_shared, 0, scoreboard_size);

ap_init_scoreboard(sb_shared);

}

else

#endif

{

/* A simple malloc will suffice */

void *sb_mem = calloc(1, scoreboard_size);

if (sb_mem == NULL) {

ap_log_error(APLOG_MARK, APLOG_CRIT, 0, NULL,

"(%d)%s: cannot allocate scoreboard",

errno, strerror(errno));

return HTTP_INTERNAL_SERVER_ERROR;

}

ap_init_scoreboard(sb_mem);