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/* $OpenBSD: scheduler_proc.c,v 1.8 2015/12/05 13:14:21 claudio Exp $ */ |
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/* |
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* Copyright (c) 2013 Eric Faurot <eric@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/queue.h> |
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#include <sys/tree.h> |
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#include <sys/socket.h> |
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#include <ctype.h> |
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#include <errno.h> |
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#include <event.h> |
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#include <fcntl.h> |
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#include <imsg.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <limits.h> |
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#include "smtpd.h" |
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#include "log.h" |
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static struct imsgbuf ibuf; |
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static struct imsg imsg; |
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static size_t rlen; |
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static char *rdata; |
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static void |
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scheduler_proc_call(void) |
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{ |
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ssize_t n; |
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if (imsg_flush(&ibuf) == -1) { |
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log_warn("warn: scheduler-proc: imsg_flush"); |
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fatalx("scheduler-proc: exiting"); |
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} |
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while (1) { |
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if ((n = imsg_get(&ibuf, &imsg)) == -1) { |
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log_warn("warn: scheduler-proc: imsg_get"); |
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break; |
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} |
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if (n) { |
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rlen = imsg.hdr.len - IMSG_HEADER_SIZE; |
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rdata = imsg.data; |
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if (imsg.hdr.type != PROC_SCHEDULER_OK) { |
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log_warnx("warn: scheduler-proc: bad response"); |
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break; |
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} |
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return; |
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} |
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if ((n = imsg_read(&ibuf)) == -1 && errno != EAGAIN) { |
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log_warn("warn: scheduler-proc: imsg_read"); |
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break; |
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} |
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if (n == 0) { |
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log_warnx("warn: scheduler-proc: pipe closed"); |
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break; |
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} |
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} |
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fatalx("scheduler-proc: exiting"); |
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} |
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static void |
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scheduler_proc_read(void *dst, size_t len) |
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{ |
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if (len > rlen) { |
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log_warnx("warn: scheduler-proc: bad msg len"); |
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fatalx("scheduler-proc: exiting"); |
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} |
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memmove(dst, rdata, len); |
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rlen -= len; |
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rdata += len; |
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} |
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static void |
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scheduler_proc_end(void) |
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{ |
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if (rlen) { |
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log_warnx("warn: scheduler-proc: bogus data"); |
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fatalx("scheduler-proc: exiting"); |
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} |
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imsg_free(&imsg); |
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} |
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/* |
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* API |
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*/ |
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static int |
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scheduler_proc_init(const char *conf) |
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{ |
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int fd, r; |
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uint32_t version; |
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fd = fork_proc_backend("scheduler", conf, "scheduler-proc"); |
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if (fd == -1) |
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fatalx("scheduler-proc: exiting"); |
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imsg_init(&ibuf, fd); |
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version = PROC_SCHEDULER_API_VERSION; |
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imsg_compose(&ibuf, PROC_SCHEDULER_INIT, 0, 0, -1, |
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&version, sizeof(version)); |
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scheduler_proc_call(); |
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scheduler_proc_read(&r, sizeof(r)); |
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scheduler_proc_end(); |
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return (1); |
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} |
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static int |
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scheduler_proc_insert(struct scheduler_info *si) |
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{ |
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int r; |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_INSERT"); |
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imsg_compose(&ibuf, PROC_SCHEDULER_INSERT, 0, 0, -1, si, sizeof(*si)); |
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scheduler_proc_call(); |
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scheduler_proc_read(&r, sizeof(r)); |
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scheduler_proc_end(); |
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return (r); |
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} |
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static size_t |
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scheduler_proc_commit(uint32_t msgid) |
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{ |
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size_t s; |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_COMMIT"); |
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imsg_compose(&ibuf, PROC_SCHEDULER_COMMIT, 0, 0, -1, |
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&msgid, sizeof(msgid)); |
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scheduler_proc_call(); |
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scheduler_proc_read(&s, sizeof(s)); |
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scheduler_proc_end(); |
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return (s); |
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} |
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static size_t |
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scheduler_proc_rollback(uint32_t msgid) |
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{ |
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size_t s; |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_ROLLBACK"); |
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imsg_compose(&ibuf, PROC_SCHEDULER_ROLLBACK, 0, 0, -1, |
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&msgid, sizeof(msgid)); |
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scheduler_proc_call(); |
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scheduler_proc_read(&s, sizeof(s)); |
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scheduler_proc_end(); |
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return (s); |
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} |
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static int |
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scheduler_proc_update(struct scheduler_info *si) |
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{ |
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int r; |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_UPDATE"); |
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imsg_compose(&ibuf, PROC_SCHEDULER_UPDATE, 0, 0, -1, si, sizeof(*si)); |
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scheduler_proc_call(); |
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scheduler_proc_read(&r, sizeof(r)); |
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if (r == 1) |
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scheduler_proc_read(si, sizeof(*si)); |
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scheduler_proc_end(); |
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return (r); |
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} |
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static int |
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scheduler_proc_delete(uint64_t evpid) |
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{ |
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int r; |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_DELETE"); |
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imsg_compose(&ibuf, PROC_SCHEDULER_DELETE, 0, 0, -1, |
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&evpid, sizeof(evpid)); |
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scheduler_proc_call(); |
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scheduler_proc_read(&r, sizeof(r)); |
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scheduler_proc_end(); |
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return (r); |
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} |
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static int |
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scheduler_proc_hold(uint64_t evpid, uint64_t holdq) |
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{ |
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struct ibuf *buf; |
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int r; |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_HOLD"); |
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buf = imsg_create(&ibuf, PROC_SCHEDULER_HOLD, 0, 0, |
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sizeof(evpid) + sizeof(holdq)); |
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if (buf == NULL) |
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return (-1); |
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if (imsg_add(buf, &evpid, sizeof(evpid)) == -1) |
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return (-1); |
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if (imsg_add(buf, &holdq, sizeof(holdq)) == -1) |
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return (-1); |
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imsg_close(&ibuf, buf); |
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scheduler_proc_call(); |
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scheduler_proc_read(&r, sizeof(r)); |
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scheduler_proc_end(); |
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return (r); |
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} |
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static int |
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scheduler_proc_release(int type, uint64_t holdq, int n) |
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{ |
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struct ibuf *buf; |
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int r; |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_RELEASE"); |
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buf = imsg_create(&ibuf, PROC_SCHEDULER_RELEASE, 0, 0, |
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sizeof(holdq) + sizeof(n)); |
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if (buf == NULL) |
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return (-1); |
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if (imsg_add(buf, &type, sizeof(type)) == -1) |
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return (-1); |
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if (imsg_add(buf, &holdq, sizeof(holdq)) == -1) |
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return (-1); |
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if (imsg_add(buf, &n, sizeof(n)) == -1) |
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return (-1); |
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imsg_close(&ibuf, buf); |
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scheduler_proc_call(); |
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scheduler_proc_read(&r, sizeof(r)); |
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scheduler_proc_end(); |
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return (r); |
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} |
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static int |
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scheduler_proc_batch(int typemask, int *delay, size_t *count, uint64_t *evpids, int *types) |
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{ |
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struct ibuf *buf; |
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int r; |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_BATCH"); |
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buf = imsg_create(&ibuf, PROC_SCHEDULER_BATCH, 0, 0, |
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sizeof(typemask) + sizeof(*count)); |
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if (buf == NULL) |
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return (-1); |
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if (imsg_add(buf, &typemask, sizeof(typemask)) == -1) |
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return (-1); |
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if (imsg_add(buf, count, sizeof(*count)) == -1) |
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return (-1); |
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imsg_close(&ibuf, buf); |
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scheduler_proc_call(); |
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scheduler_proc_read(&r, sizeof(r)); |
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scheduler_proc_read(delay, sizeof(*delay)); |
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scheduler_proc_read(count, sizeof(*count)); |
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if (r > 0) { |
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scheduler_proc_read(evpids, sizeof(*evpids) * (*count)); |
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scheduler_proc_read(types, sizeof(*types) * (*count)); |
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} |
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scheduler_proc_end(); |
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return (r); |
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} |
301 |
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static size_t |
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scheduler_proc_messages(uint32_t from, uint32_t *dst, size_t size) |
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{ |
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struct ibuf *buf; |
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size_t s; |
307 |
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308 |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_MESSAGES"); |
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310 |
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buf = imsg_create(&ibuf, PROC_SCHEDULER_MESSAGES, 0, 0, |
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sizeof(from) + sizeof(size)); |
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if (buf == NULL) |
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return (-1); |
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if (imsg_add(buf, &from, sizeof(from)) == -1) |
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return (-1); |
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if (imsg_add(buf, &size, sizeof(size)) == -1) |
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return (-1); |
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imsg_close(&ibuf, buf); |
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320 |
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scheduler_proc_call(); |
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s = rlen / sizeof(*dst); |
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scheduler_proc_read(dst, s * sizeof(*dst)); |
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scheduler_proc_end(); |
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326 |
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return (s); |
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} |
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329 |
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static size_t |
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scheduler_proc_envelopes(uint64_t from, struct evpstate *dst, size_t size) |
331 |
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{ |
332 |
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struct ibuf *buf; |
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size_t s; |
334 |
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335 |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_ENVELOPES"); |
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buf = imsg_create(&ibuf, PROC_SCHEDULER_ENVELOPES, 0, 0, |
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sizeof(from) + sizeof(size)); |
339 |
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if (buf == NULL) |
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return (-1); |
341 |
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if (imsg_add(buf, &from, sizeof(from)) == -1) |
342 |
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return (-1); |
343 |
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if (imsg_add(buf, &size, sizeof(size)) == -1) |
344 |
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return (-1); |
345 |
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imsg_close(&ibuf, buf); |
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347 |
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scheduler_proc_call(); |
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349 |
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s = rlen / sizeof(*dst); |
350 |
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scheduler_proc_read(dst, s * sizeof(*dst)); |
351 |
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scheduler_proc_end(); |
352 |
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353 |
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return (s); |
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} |
355 |
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356 |
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static int |
357 |
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scheduler_proc_schedule(uint64_t evpid) |
358 |
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{ |
359 |
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int r; |
360 |
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361 |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_SCHEDULE"); |
362 |
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363 |
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imsg_compose(&ibuf, PROC_SCHEDULER_SCHEDULE, 0, 0, -1, |
364 |
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&evpid, sizeof(evpid)); |
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366 |
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scheduler_proc_call(); |
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368 |
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scheduler_proc_read(&r, sizeof(r)); |
369 |
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scheduler_proc_end(); |
370 |
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371 |
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return (r); |
372 |
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} |
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374 |
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static int |
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scheduler_proc_remove(uint64_t evpid) |
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{ |
377 |
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int r; |
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379 |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_REMOVE"); |
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381 |
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imsg_compose(&ibuf, PROC_SCHEDULER_REMOVE, 0, 0, -1, |
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&evpid, sizeof(evpid)); |
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384 |
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scheduler_proc_call(); |
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386 |
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scheduler_proc_read(&r, sizeof(r)); |
387 |
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scheduler_proc_end(); |
388 |
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389 |
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return (r); |
390 |
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} |
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392 |
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static int |
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scheduler_proc_suspend(uint64_t evpid) |
394 |
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{ |
395 |
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int r; |
396 |
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397 |
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log_debug("debug: scheduler-proc: PROC_SCHEDULER_SUSPEND"); |
398 |
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399 |
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imsg_compose(&ibuf, PROC_SCHEDULER_SUSPEND, 0, 0, -1, |
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&evpid, sizeof(evpid)); |
401 |
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402 |
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scheduler_proc_call(); |
403 |
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404 |
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scheduler_proc_read(&r, sizeof(r)); |
405 |
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scheduler_proc_end(); |
406 |
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407 |
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return (r); |
408 |
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} |
409 |
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|
|
410 |
|
|
static int |
411 |
|
|
scheduler_proc_resume(uint64_t evpid) |
412 |
|
|
{ |
413 |
|
|
int r; |
414 |
|
|
|
415 |
|
|
log_debug("debug: scheduler-proc: PROC_SCHEDULER_RESUME"); |
416 |
|
|
|
417 |
|
|
imsg_compose(&ibuf, PROC_SCHEDULER_RESUME, 0, 0, -1, |
418 |
|
|
&evpid, sizeof(evpid)); |
419 |
|
|
|
420 |
|
|
scheduler_proc_call(); |
421 |
|
|
|
422 |
|
|
scheduler_proc_read(&r, sizeof(r)); |
423 |
|
|
scheduler_proc_end(); |
424 |
|
|
|
425 |
|
|
return (r); |
426 |
|
|
} |
427 |
|
|
|
428 |
|
|
struct scheduler_backend scheduler_backend_proc = { |
429 |
|
|
scheduler_proc_init, |
430 |
|
|
scheduler_proc_insert, |
431 |
|
|
scheduler_proc_commit, |
432 |
|
|
scheduler_proc_rollback, |
433 |
|
|
scheduler_proc_update, |
434 |
|
|
scheduler_proc_delete, |
435 |
|
|
scheduler_proc_hold, |
436 |
|
|
scheduler_proc_release, |
437 |
|
|
scheduler_proc_batch, |
438 |
|
|
scheduler_proc_messages, |
439 |
|
|
scheduler_proc_envelopes, |
440 |
|
|
scheduler_proc_schedule, |
441 |
|
|
scheduler_proc_remove, |
442 |
|
|
scheduler_proc_suspend, |
443 |
|
|
scheduler_proc_resume, |
444 |
|
|
}; |