/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
- * Ken Stevens, Steve McClure
+ * Copyright (C) 1986-2020, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Ken Stevens, Steve McClure, Markus Armbruster
*
- * This program is free software; you can redistribute it and/or modify
+ * Empire is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* ---
*
- * See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
- * related information and legal notices. It is expected that any future
- * projects/authors will amend these files as needed.
+ * See files README, COPYING and CREDITS in the root of the source
+ * tree for related information and legal notices. It is expected
+ * that future projects/authors will amend these files as needed.
*
* ---
*
* lwp.c: Interface from Empire threads to LWP threads
- *
+ *
* Known contributors to this file:
* Sasha Mikheev
+ * Markus Armbruster, 2006-2020
*/
-#include <stdio.h>
-#include "prototypes.h"
+#include <config.h>
+
+#include <signal.h>
+#include <time.h>
#include "empthread.h"
+#include "file.h"
+#include "misc.h"
-#ifdef _EMPTH_LWP
+/* Flags that were passed to empth_init() */
+static int empth_flags;
int
-empth_init (char **ctx, int flags)
+empth_init(void **ctx, int flags)
{
- lwpInitSystem(7, ctx, flags);
+ static int sig[] = { SIGHUP, SIGINT, SIGTERM, 0 };
+ empth_flags = flags;
+ empth_init_signals();
+ lwpInitSystem(1, ctx, flags, sig);
return 0;
}
-
empth_t *
-empth_create (int prio, void (*entry)(), int size, int flags, char *name,
- char *desc, void *ud)
-{
- /* inherit flags */
- if(!flags)
- flags = LwpCurrent->flags;
- return lwpCreate(prio, entry, size, flags, name, desc, 0, 0, ud);
-}
-
-#if 0
-/* This is unused now? */
-void
-empth_setctx(void *ctx)
+empth_create(void (*entry)(void *), int size, int flags,
+ char *name, void *ud)
{
- /* lwp does it automatically */
- return;
+ if (!flags)
+ flags = empth_flags;
+ ef_make_stale();
+ return lwpCreate(1, entry, size, flags, name, 0, NULL, ud);
}
-#endif
empth_t *
empth_self(void)
return LwpCurrent;
}
-void
-empth_exit (void)
+char *
+empth_name(empth_t *thread)
{
- time_t now;
-
- /* We want to leave the main thread around forever, until it's time
- for it to die for real (in a shutdown) */
- if (!strcmp(LwpCurrent->name, "Main")) {
- while(1) {
- time(&now);
- lwpSleepUntil(now + 60);
- }
- }
- lwpExit();
+ return lwpName(thread);
}
-
+
void
-empth_yield (void)
+empth_set_name(empth_t *thread, char *name)
{
- /* a hack! */
- lwpReschedule();
+ lwpSetName(thread, name);
}
void
-empth_terminate(empth_t *a)
+empth_exit(void)
{
- lwpTerminate(a);
+ ef_make_stale();
+ lwpExit();
}
void
-empth_select(int fd, int flags)
+empth_yield(void)
{
- lwpSleepFd(fd, flags);
+ ef_make_stale();
+ lwpYield();
+}
+
+int
+empth_select(int fd, int flags, struct timeval *timeout)
+{
+ ef_make_stale();
+ return lwpSleepFd(fd, flags, timeout);
}
void
empth_wakeup(empth_t *a)
{
- lwpWakeupFd(a);
+ lwpWakeup(a);
}
-void
-empth_sleep(long int until)
+int
+empth_sleep(time_t until)
{
- lwpSleepUntil(until);
+ ef_make_stale();
+ return lwpSleepUntil(until);
}
+int
+empth_wait_for_signal(void)
+{
+ int sig, err;
+ time_t now;
+
+ ef_make_stale();
+ for (;;) {
+ err = lwpSigWait(&sig);
+ if (CANT_HAPPEN(err)) {
+ time(&now);
+ lwpSleepUntil(now + 60);
+ continue;
+ }
+ return sig;
+ }
+}
-empth_sem_t *
-empth_sem_create(char *name, int cnt)
+empth_rwlock_t *
+empth_rwlock_create(char *name)
{
- return lwpCreateSem(name, cnt);
+ return lwp_rwlock_create(name);
}
void
-empth_sem_signal(empth_sem_t *sm)
+empth_rwlock_destroy(empth_rwlock_t *rwlock)
{
- lwpSignal(sm);
+ lwp_rwlock_destroy(rwlock);
}
void
-empth_sem_wait (empth_sem_t *sm)
+empth_rwlock_wrlock(empth_rwlock_t *rwlock)
{
- lwpWait(sm);
+ ef_make_stale();
+ lwp_rwlock_wrlock(rwlock);
}
-emp_sig_t
-empth_alarm(int sig)
+void
+empth_rwlock_rdlock(empth_rwlock_t *rwlock)
{
- /* no way we can be here while using LWP threads */
- panic(sig);
+ ef_make_stale();
+ lwp_rwlock_rdlock(rwlock);
}
-#endif
+void
+empth_rwlock_unlock(empth_rwlock_t *rwlock)
+{
+ lwp_rwlock_unlock(rwlock);
+}
projects / empserver / blobdiff