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Annotation of embedaddon/lighttpd/src/fdevent_solaris_devpoll.c, revision 1.1

1.1     ! misho       1: #include "fdevent.h"
        !             2: #include "buffer.h"
        !             3: #include "log.h"
        !             4: 
        !             5: #include <sys/types.h>
        !             6: 
        !             7: #include <unistd.h>
        !             8: #include <stdlib.h>
        !             9: #include <stdio.h>
        !            10: #include <string.h>
        !            11: #include <errno.h>
        !            12: #include <signal.h>
        !            13: #include <fcntl.h>
        !            14: 
        !            15: #ifdef USE_SOLARIS_DEVPOLL
        !            16: 
        !            17: # include <sys/devpoll.h>
        !            18: 
        !            19: static void fdevent_solaris_devpoll_free(fdevents *ev) {
        !            20:        free(ev->devpollfds);
        !            21:        close(ev->devpoll_fd);
        !            22: }
        !            23: 
        !            24: /* return -1 is fine here */
        !            25: 
        !            26: static int fdevent_solaris_devpoll_event_del(fdevents *ev, int fde_ndx, int fd) {
        !            27:        struct pollfd pfd;
        !            28: 
        !            29:        if (fde_ndx < 0) return -1;
        !            30: 
        !            31:        pfd.fd = fd;
        !            32:        pfd.events = POLLREMOVE;
        !            33:        pfd.revents = 0;
        !            34: 
        !            35:        if (-1 == write(ev->devpoll_fd, &pfd, sizeof(pfd))) {
        !            36:                log_error_write(ev->srv, __FILE__, __LINE__, "S(D, S)",
        !            37:                        "(del) write failed: ", fd, strerror(errno));
        !            38: 
        !            39:                return -1;
        !            40:        }
        !            41: 
        !            42:        return -1;
        !            43: }
        !            44: 
        !            45: static int fdevent_solaris_devpoll_event_set(fdevents *ev, int fde_ndx, int fd, int events) {
        !            46:        struct pollfd pfd;
        !            47:        int add = 0;
        !            48: 
        !            49:        int pevents = 0;
        !            50:        if (events & FDEVENT_IN)  pevents |= POLLIN;
        !            51:        if (events & FDEVENT_OUT) pevents |= POLLOUT;
        !            52: 
        !            53:        if (fde_ndx == -1) add = 1;
        !            54: 
        !            55:        pfd.fd = fd;
        !            56:        pfd.events = pevents;
        !            57:        pfd.revents = 0;
        !            58: 
        !            59:        if (-1 == write(ev->devpoll_fd, &pfd, sizeof(pfd))) {
        !            60:                log_error_write(ev->srv, __FILE__, __LINE__, "S(D, S)",
        !            61:                        "(set) write failed: ", fd, strerror(errno));
        !            62: 
        !            63:                return -1;
        !            64:        }
        !            65: 
        !            66:        return fd;
        !            67: }
        !            68: 
        !            69: static int fdevent_solaris_devpoll_poll(fdevents *ev, int timeout_ms) {
        !            70:        struct dvpoll dopoll;
        !            71:        int ret;
        !            72: 
        !            73:        dopoll.dp_timeout = timeout_ms;
        !            74:        dopoll.dp_nfds = ev->maxfds - 1;
        !            75:        dopoll.dp_fds = ev->devpollfds;
        !            76: 
        !            77:        ret = ioctl(ev->devpoll_fd, DP_POLL, &dopoll);
        !            78: 
        !            79:        return ret;
        !            80: }
        !            81: 
        !            82: static int fdevent_solaris_devpoll_event_get_revent(fdevents *ev, size_t ndx) {
        !            83:        int r, poll_r;
        !            84: 
        !            85:        r = 0;
        !            86:        poll_r = ev->devpollfds[ndx].revents;
        !            87: 
        !            88:        /* map POLL* to FDEVEN_*; they are probably the same, but still. */
        !            89: 
        !            90:        if (poll_r & POLLIN) r |= FDEVENT_IN;
        !            91:        if (poll_r & POLLOUT) r |= FDEVENT_OUT;
        !            92:        if (poll_r & POLLERR) r |= FDEVENT_ERR;
        !            93:        if (poll_r & POLLHUP) r |= FDEVENT_HUP;
        !            94:        if (poll_r & POLLNVAL) r |= FDEVENT_NVAL;
        !            95:        if (poll_r & POLLPRI) r |= FDEVENT_PRI;
        !            96: 
        !            97:        return r;
        !            98: }
        !            99: 
        !           100: static int fdevent_solaris_devpoll_event_get_fd(fdevents *ev, size_t ndx) {
        !           101:        return ev->devpollfds[ndx].fd;
        !           102: }
        !           103: 
        !           104: static int fdevent_solaris_devpoll_event_next_fdndx(fdevents *ev, int last_ndx) {
        !           105:        size_t i;
        !           106: 
        !           107:        UNUSED(ev);
        !           108: 
        !           109:        i = (last_ndx < 0) ? 0 : last_ndx + 1;
        !           110: 
        !           111:        return i;
        !           112: }
        !           113: 
        !           114: int fdevent_solaris_devpoll_reset(fdevents *ev) {
        !           115:        /* a forked process does only inherit the filedescriptor,
        !           116:         * but every operation on the device will lead to a EACCES */
        !           117:        if ((ev->devpoll_fd = open("/dev/poll", O_RDWR)) < 0) {
        !           118:                log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
        !           119:                        "opening /dev/poll failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\"");
        !           120: 
        !           121:                return -1;
        !           122:        }
        !           123: 
        !           124:        if (fcntl(ev->devpoll_fd, F_SETFD, FD_CLOEXEC) < 0) {
        !           125:                log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
        !           126:                        "fcntl /dev/poll fd failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\"");
        !           127: 
        !           128:                close(ev->devpoll_fd);
        !           129: 
        !           130:                return -1;
        !           131:        }
        !           132:        return 0;
        !           133: }
        !           134: int fdevent_solaris_devpoll_init(fdevents *ev) {
        !           135:        ev->type = FDEVENT_HANDLER_SOLARIS_DEVPOLL;
        !           136: #define SET(x) \
        !           137:        ev->x = fdevent_solaris_devpoll_##x;
        !           138: 
        !           139:        SET(free);
        !           140:        SET(poll);
        !           141:        SET(reset);
        !           142: 
        !           143:        SET(event_del);
        !           144:        SET(event_set);
        !           145: 
        !           146:        SET(event_next_fdndx);
        !           147:        SET(event_get_fd);
        !           148:        SET(event_get_revent);
        !           149: 
        !           150:        ev->devpollfds = malloc(sizeof(*ev->devpollfds) * ev->maxfds);
        !           151: 
        !           152:        if ((ev->devpoll_fd = open("/dev/poll", O_RDWR)) < 0) {
        !           153:                log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
        !           154:                        "opening /dev/poll failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\"");
        !           155: 
        !           156:                return -1;
        !           157:        }
        !           158: 
        !           159:        /* we just wanted to check if it works */
        !           160:        close(ev->devpoll_fd);
        !           161: 
        !           162:        ev->devpoll_fd = -1;
        !           163: 
        !           164:        return 0;
        !           165: }
        !           166: 
        !           167: #else
        !           168: int fdevent_solaris_devpoll_init(fdevents *ev) {
        !           169:        UNUSED(ev);
        !           170: 
        !           171:        log_error_write(ev->srv, __FILE__, __LINE__, "S",
        !           172:                "solaris-devpoll not supported, try to set server.event-handler = \"poll\" or \"select\"");
        !           173: 
        !           174:        return -1;
        !           175: }
        !           176: #endif