X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Feventl.c;h=ba4ba599272e13c5a24f7e2addca3a0689ea55d7;hb=37ae4386bd764d62ae43c68df1560be55ff813ca;hp=87bcecd6f483bb72b8c6b8bc9d15a4ce09a7b0e2;hpb=83875957712d17f110b1b7055fa26fcfb9c135e7;p=pazpar2-moved-to-github.git diff --git a/src/eventl.c b/src/eventl.c index 87bcecd..ba4ba59 100644 --- a/src/eventl.c +++ b/src/eventl.c @@ -36,14 +36,9 @@ #include #include -#ifdef WIN32 -#include -#else +#if HAVE_UNISTD_H #include #endif -#if HAVE_SYS_TIME_H -#include -#endif #include #include @@ -55,6 +50,7 @@ #include #include #include +#include #include "eventl.h" #include "sel_thread.h" @@ -74,15 +70,18 @@ static int iochan_use(int delta) no_iochans_total += delta; iochans = no_iochans; yaz_mutex_leave(g_mutex); - yaz_log(YLOG_DEBUG, "%s iochans=%d", delta == 0 ? "" : (delta > 0 ? "INC" : "DEC"), iochans); + yaz_log(YLOG_DEBUG, "%s iochans=%d", + delta == 0 ? "" : (delta > 0 ? "INC" : "DEC"), iochans); return iochans; } -int iochans_count(void) { +int iochans_count(void) +{ return iochan_use(0); } -int iochans_count_total(void) { +int iochans_count_total(void) +{ int total = 0; if (!g_mutex) return 0; @@ -105,10 +104,12 @@ struct iochan_man_s { int log_level; YAZ_MUTEX iochan_mutex; int size_fds; + int limit_fd; struct yaz_poll_fd *fds; }; -iochan_man_t iochan_man_create(int no_threads) { +iochan_man_t iochan_man_create(int no_threads, int max_sockets) +{ iochan_man_t man = xmalloc(sizeof(*man)); man->channel_list = 0; man->sel_thread = 0; /* can't create sel_thread yet because we may fork */ @@ -118,6 +119,20 @@ iochan_man_t iochan_man_create(int no_threads) { man->iochan_mutex = 0; man->size_fds = 0; man->fds = 0; + man->limit_fd = 0; +#if HAVE_GETRLIMIT + { + struct rlimit limit_data; + getrlimit(RLIMIT_NOFILE, &limit_data); + yaz_log(YLOG_LOG, "getrlimit NOFILE cur=%ld max=%ld", + (long) limit_data.rlim_cur, (long) limit_data.rlim_max); + man->limit_fd = limit_data.rlim_cur - 200; + } +#endif + if (max_sockets) + man->limit_fd = max_sockets; + yaz_log(YLOG_LOG, "iochan threads %d limit fd %d", no_threads, + man->limit_fd); yaz_mutex_create(&man->iochan_mutex); return man; } @@ -132,8 +147,10 @@ IOCHAN iochan_destroy_real(IOCHAN chan) return next; } -void iochan_man_destroy(iochan_man_t *mp) { - if (*mp) { +void iochan_man_destroy(iochan_man_t *mp) +{ + if (*mp) + { IOCHAN c; if ((*mp)->sel_thread) sel_thread_destroy((*mp)->sel_thread); @@ -142,9 +159,8 @@ void iochan_man_destroy(iochan_man_t *mp) { c = (*mp)->channel_list; (*mp)->channel_list = NULL; yaz_mutex_leave((*mp)->iochan_mutex); - while (c) { + while (c) c = iochan_destroy_real(c); - } yaz_mutex_destroy(&(*mp)->iochan_mutex); xfree((*mp)->fds); xfree(*mp); @@ -152,17 +168,44 @@ void iochan_man_destroy(iochan_man_t *mp) { } } -void iochan_add(iochan_man_t man, IOCHAN chan) { - chan->man = man; - yaz_mutex_enter(man->iochan_mutex); +int iochan_add(iochan_man_t man, IOCHAN chan, int slack) +{ + int r = 0, no_fds = 0; + IOCHAN p; + yaz_log(man->log_level, "iochan_add : chan=%p channel list=%p", chan, man->channel_list); - chan->next = man->channel_list; - man->channel_list = chan; + yaz_mutex_enter(man->iochan_mutex); + for (p = man->channel_list; p; p = p->next) + { + if (p->fd >= 0) + no_fds++; + } + if (slack >= 0 && man->limit_fd > 0 && no_fds >= man->limit_fd - slack) + { + r = -1; + yaz_log(YLOG_WARN, "max channels %d in use", no_fds); + } + else + { + chan->man = man; + chan->next = man->channel_list; + man->channel_list = chan; + } yaz_mutex_leave(man->iochan_mutex); + return r; +} + +void iochan_destroy(IOCHAN chan) +{ + if (chan->man) + chan->destroyed = 1; + else + iochan_destroy_real(chan); } -IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags, const char *name) { +IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags, const char *name) +{ IOCHAN new_iochan; if (!(new_iochan = (IOCHAN) xmalloc(sizeof(*new_iochan)))) @@ -180,7 +223,8 @@ IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags, const char *name) { return new_iochan; } -static void work_handler(void *work_data) { +static void work_handler(void *work_data) +{ IOCHAN p = work_data; yaz_log(p->man->log_level, "eventl: work begin chan=%p name=%s event=%d", @@ -199,40 +243,39 @@ static void work_handler(void *work_data) { p->name ? p->name : "", p->this_event); } -static void run_fun(iochan_man_t man, IOCHAN p) { - if (man->sel_thread) { +static void run_fun(iochan_man_t man, IOCHAN p) +{ + if (man->sel_thread) + { yaz_log(man->log_level, "eventl: work add chan=%p name=%s event=%d", p, p->name ? p->name : "", p->this_event); p->thread_users++; sel_thread_add(man->sel_thread, p); - } else + } + else work_handler(p); } -static int event_loop(iochan_man_t man, IOCHAN *iochans) { +static int event_loop(iochan_man_t man, IOCHAN *iochans) +{ do /* loop as long as there are active associations to process */ { IOCHAN p, *nextp; IOCHAN start; IOCHAN inv_start; int res; - static struct timeval to; struct yaz_poll_fd *fds; int i, no_fds = 0; int connection_fired = 0; - to.tv_sec = 300; - to.tv_usec = 0; - - // INV: start must no change through the loop + int tv_sec = 300; yaz_mutex_enter(man->iochan_mutex); start = man->channel_list; yaz_mutex_leave(man->iochan_mutex); inv_start = start; for (p = start; p; p = p->next) - if (p->fd >= 0) - no_fds++; + no_fds++; if (man->sel_fd != -1) no_fds++; if (no_fds > man->size_fds) @@ -246,41 +289,48 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { { fds[i].fd = man->sel_fd; fds[i].input_mask = yaz_poll_read; + fds[i].client_data = 0; i++; } - for (p = start; p; p = p->next) + for (p = start; p; p = p->next, i++) { + p->poll_offset = i; + fds[i].client_data = p; + fds[i].fd = -1; + fds[i].input_mask = 0; if (p->thread_users > 0) continue; - if (p->max_idle && p->max_idle < to.tv_sec) - to.tv_sec = p->max_idle; + if (p->max_idle && p->max_idle < tv_sec) + tv_sec = p->max_idle; if (p->fd < 0) continue; - fds[i].fd = p->fd; - fds[i].input_mask = 0; if (p->flags & EVENT_INPUT) fds[i].input_mask |= yaz_poll_read; if (p->flags & EVENT_OUTPUT) fds[i].input_mask |= yaz_poll_write; if (p->flags & EVENT_EXCEPT) fds[i].input_mask |= yaz_poll_except; - i++; + if (fds[i].input_mask) + fds[i].fd = p->fd; } - yaz_log(man->log_level, "yaz_poll begin nofds=%d", no_fds); - res = yaz_poll(fds, no_fds, to.tv_sec, 0); + assert(i == no_fds); + yaz_log(man->log_level, "yaz_poll begin tv_sec=%d nofds=%d", tv_sec, + no_fds); + res = yaz_poll(fds, no_fds, tv_sec, 0); yaz_log(man->log_level, "yaz_poll returned res=%d", res); if (res < 0) { if (errno == EINTR) continue; - else { + else + { yaz_log(YLOG_ERRNO | YLOG_WARN, "poll"); - return 0; + abort(); } } - i = 0; if (man->sel_fd != -1) { + i = 0; assert(fds[i].fd == man->sel_fd); if (fds[i].output_mask) { @@ -288,14 +338,14 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { yaz_log(man->log_level, "eventl: sel input on sel_fd=%d", man->sel_fd); - while ((chan = sel_thread_result(man->sel_thread))) { + while ((chan = sel_thread_result(man->sel_thread))) + { yaz_log(man->log_level, "eventl: got thread result chan=%p name=%s", chan, chan->name ? chan->name : ""); chan->thread_users--; } } - i++; } if (man->log_level) { @@ -307,14 +357,13 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { for (p = start; p; p = p->next) { time_t now = time(0); + i = p->poll_offset; if (p->destroyed) { yaz_log(man->log_level, "eventl: skip destroyed chan=%p name=%s", p, p->name ? p->name : ""); - if (p->fd >= 0) - i++; continue; } if (p->thread_users > 0) @@ -322,20 +371,16 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { yaz_log(man->log_level, "eventl: skip chan=%p name=%s users=%d", p, p->name ? p->name : "", p->thread_users); - if (p->fd >= 0) - i++; continue; } p->this_event = 0; - if (p->max_idle && now - p->last_event > p->max_idle) { p->last_event = now; p->this_event |= EVENT_TIMEOUT; } - if (p->fd >= 0) + if (fds[i].fd >= 0 && p->fd == fds[i].fd) { - assert(fds[i].fd == p->fd); if (fds[i].output_mask & yaz_poll_read) { p->last_event = now; @@ -351,10 +396,10 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { p->last_event = now; p->this_event |= EVENT_EXCEPT; } - i++; } /* only fire one Z39.50/SRU socket event.. except for timeout */ - if (p->this_event) { + if (p->this_event) + { if (!(p->this_event & EVENT_TIMEOUT) && !strcmp(p->name, "connection_socket")) { @@ -370,11 +415,12 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { assert(inv_start == start); yaz_mutex_enter(man->iochan_mutex); - for (nextp = iochans; *nextp;) { + for (nextp = iochans; *nextp; ) + { IOCHAN p = *nextp; - if (p->destroyed && p->thread_users == 0) { + if (p->destroyed && p->thread_users == 0) *nextp = iochan_destroy_real(p); - } else + else nextp = &p->next; } yaz_mutex_leave(man->iochan_mutex); @@ -382,8 +428,10 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { return 0; } -void iochan_man_events(iochan_man_t man) { - if (man->no_threads > 0 && !man->sel_thread) { +void iochan_man_events(iochan_man_t man) +{ + if (man->no_threads > 0 && !man->sel_thread) + { man->sel_thread = sel_thread_create(work_handler, 0 /*work_destroy */, &man->sel_fd, man->no_threads); yaz_log(man->log_level, "iochan_man_events. Using %d threads", @@ -392,17 +440,6 @@ void iochan_man_events(iochan_man_t man) { event_loop(man, &man->channel_list); } -void pazpar2_sleep(double d) { -#ifdef WIN32 - Sleep( (DWORD) (d * 1000)); -#else - struct timeval tv; - tv.tv_sec = floor(d); - tv.tv_usec = (d - floor(d)) * 1000000; - select(0, 0, 0, 0, &tv); -#endif -} - /* * Local variables: * c-basic-offset: 4