/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1994-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Copyright (C) 1994-2009, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure
* Copyright (C) 1991-3 Stephen Crane
*
* ---
*
* lwpint.h: lwp internal structures
- *
+ *
* Known contributors to this file:
- * Markus Armbruster, 2004-2006
+ * Markus Armbruster, 2004-2009
*/
#ifndef LWPINT_H
#define LWPINT_H
-#ifdef UCONTEXT
+#include <signal.h>
+#include <time.h>
#include <ucontext.h>
-#else /* !UCONTEXT */
-#include <setjmp.h>
-#endif /* !UCONTEXT */
-/* `liveness' counter: check signals every `n' visits to the scheduler */
-/* note: the lower this value, the more responsive the system but the */
-/* more inefficient the context switch time */
-#define LCOUNT -1
+#include "misc.h"
/* process control block. do *not* change the position of context */
struct lwpProc {
-#ifdef UCONTEXT
ucontext_t context; /* context structure */
-#else /* !UCONTEXT */
- jmp_buf context; /* processor context area */
-#endif /* !UCONTEXT */
void *sbtm; /* stack buffer attached to it */
int size; /* size of stack buffer */
char *ustack; /* lowest usable stack address */
void (*entry)(void *); /* entry point */
int dead; /* whether the process can be rescheduled */
int pri; /* which scheduling queue we're on */
- long runtime; /* time at which process is restarted */
+ time_t runtime; /* time at which process is restarted */
int fd; /* fd we're blocking on */
+ int fd_ready; /* woken up because fd was ready */
int argc; /* initial arguments */
char **argv;
void *ud; /* user data */
- char *name; /* process name and description */
- char *desc;
+ char *name; /* process name, for debugging */
int flags;
struct lwpProc *next;
};
struct lwpProc *tail;
};
-/* semaphore */
-struct lwpSem {
- int count;
- struct lwpQueue q;
- char *name;
-};
-
#define LWP_REDZONE 1024 /* make this a multiple of 1024 */
-/* XXX Note that this assumes sizeof(long) == 4 */
-#define LWP_CHECKMARK 0x5a5a5a5aL
-
-extern int LwpStackGrowsDown;
+/* XXX Note that this assumes sizeof(int) == 4 */
+#define LWP_CHECKMARK 0x5a5a5a5a
-int lwpNewContext(struct lwpProc *, int);
+int lwpNewContext(struct lwpProc *);
void lwpSwitchContext(struct lwpProc *, struct lwpProc *);
void lwpAddTail(struct lwpQueue *, struct lwpProc *);
struct lwpProc *lwpGetFirst(struct lwpQueue *);
void lwpReady(struct lwpProc *);
void lwpReschedule(void);
void lwpEntryPoint(void);
-void lwpInitSelect(struct lwpProc * self);
-void lwpDestroy(struct lwpProc * proc);
+void lwpInitSelect(struct lwpProc *);
+void lwpWakeupSleep(void);
+void lwpSelect(void *);
+void lwpInitSigWait(sigset_t *);
+void lwpSigWakeup(void);
+void lwpStatus(struct lwpProc *, char *, ...)
+ ATTRIBUTE((format (printf, 2, 3)));
#endif