X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lnet%2Fulnds%2Fpqtimer.c;fp=lnet%2Fulnds%2Fpqtimer.c;h=0000000000000000000000000000000000000000;hb=ed88907a96ba81d3558e71ade9def98bdc785169;hp=98c48ebe3fa8d059090e8ba01a05d310444d0931;hpb=f7a2d07e30db3462880feb00a0461ee056b225c6;p=fs%2Flustre-release.git

diff --git a/lnet/ulnds/pqtimer.c b/lnet/ulnds/pqtimer.c
deleted file mode 100644
index 98c48eb..0000000
--- a/lnet/ulnds/pqtimer.c
+++ /dev/null
@@ -1,226 +0,0 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- *  Copyright (c) 2002 Cray Inc.
- *  Copyright (c) 2002 Eric Hoffman
- *
- *   This file is part of Lustre, http://www.lustre.org.
- *
- *   Lustre is free software; you can redistribute it and/or
- *   modify it under the terms of version 2 of the GNU General Public
- *   License as published by the Free Software Foundation.
- *
- *   Lustre is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with Lustre; if not, write to the Free Software
- *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/* timer.c:
- *   this file implements a simple priority-queue based timer system. when
- * combined with a file which implements now() and block(), it can
- * be used to provide course-grained time-based callbacks.
- */
-
-#include <pqtimer.h>
-#include <stdlib.h>
-#include <string.h>
-
-struct timer {
-  void (*function)(void *);
-  void *arg;
-  when w;
-  int interval;
-  int disable;
-};
-
-typedef struct thunk *thunk;
-struct thunk {
-    void (*f)(void *);
-    void *a;
-    thunk next;
-};
-
-extern when now(void);
-
-static thunk thunks;
-static int internal;
-static void (*block_function)(when);
-static int number_of_timers;
-static int size_of_pqueue;
-static timer *timers;
-
-
-static void heal(int where)
-{
-    int left=(where<<1);
-    int right=(where<<1)+1;
-    int min=where;
-    timer temp;
-  
-    if (left <= number_of_timers)
-	if (timers[left]->w < timers[min]->w) min=left;
-    if (right <= number_of_timers)
-	if (timers[right]->w < timers[min]->w) min=right;
-    if (min != where){
-	temp=timers[where];
-	timers[where]=timers[min];
-	timers[min]=temp;
-	heal(min);
-    }
-}
-
-static void add_pqueue(int i)
-{
-    timer temp;
-    int parent=(i>>1);
-    if ((i>1) && (timers[i]->w< timers[parent]->w)){
-	temp=timers[i];
-	timers[i]=timers[parent];
-	timers[parent]=temp;
-	add_pqueue(parent);
-    }
-}
-
-static void add_timer(timer t)
-{
-    if (size_of_pqueue<(number_of_timers+2)){
-	int oldsize=size_of_pqueue;
-	timer *new=(void *)malloc(sizeof(struct timer)*(size_of_pqueue+=10));
-	memcpy(new,timers,sizeof(timer)*oldsize);
-	timers=new;
-    }
-    timers[++number_of_timers]=t;
-    add_pqueue(number_of_timers);
-}
-
-/* Function: register_timer
- * Arguments: interval: the time interval from the current time when
- *                      the timer function should be called
- *            function: the function to call when the time has expired
- *            argument: the argument to call it with.
- * Returns: a pointer to a timer structure
- */
-timer register_timer(when interval,
-		     void (*function)(void *),
-		     void *argument)
-{
-    timer t=(timer)malloc(sizeof(struct timer));
-
-    t->arg=argument;
-    t->function=function;
-    t->interval=interval;
-    t->disable=0;
-    t->w=now()+interval;
-    add_timer(t);
-    if (!internal && (number_of_timers==1))
-        block_function(t->w);
-    return(t);
-}
-
-/* Function: remove_timer
- * Arguments: t: 
- * Returns: nothing
- *
- * remove_timer removes a timer from the system, insuring
- * that it will never be called. It does not actually
- * free the timer due to reentrancy issues.
- */
-
-void remove_timer(timer t)
-{
-    t->disable=1;
-}
-
-
-
-void timer_fire()
-{
-    timer current;
-
-    current=timers[1];
-    timers[1]=timers[number_of_timers--];
-    heal(1);
-    if (!current->disable) {
-        (*current->function)(current->arg);
-    }
-    free(current);
-}
-
-when next_timer(void)
-{
-    when here=now();
-
-    while (number_of_timers && (timers[1]->w <= here)) timer_fire();
-    if (number_of_timers) return(timers[1]->w);
-    return(0);
-}
-
-/* Function: timer_loop
- * Arguments: none
- * Returns: never
- * 
- * timer_loop() is the blocking dispatch function for the timer.
- * Is calls the block() function registered with init_timer,
- * and handles associated with timers that have been registered.
- */
-void timer_loop()
-{
-    when here;
-
-    while (1){
-	thunk z;
-	here=now();
-
-	for (z=thunks;z;z=z->next) (*z->f)(z->a);
-
-	if (number_of_timers){
-	    if (timers[1]->w > here){
-		(*block_function)(timers[1]->w);
-	    } else {
-                timer_fire();
-	    }
-	} else {
-	    thunk z;
-	    for (z=thunks;z;z=z->next) (*z->f)(z->a);
-	    (*block_function)(0);
-	}
-    }
-}
-
-
-/* Function: register_thunk
- * Arguments: f: the function to call
- *            a: the single argument to call it with
- *
- * Thunk functions get called at irregular intervals, they
- * should not assume when, or take a particularily long
- * amount of time. Thunks are for background cleanup tasks.
- */
-void register_thunk(void (*f)(void *),void *a)
-{
-    thunk t=(void *)malloc(sizeof(struct thunk));
-    t->f=f;
-    t->a=a;
-    t->next=thunks;
-    thunks=t;
-}
-
-/* Function: initialize_timer
- * Arguments: block: the function to call to block for the specified interval 
- *
- * initialize_timer() must be called before any other timer function,
- * including timer_loop.
- */
-void initialize_timer(void (*block)(when))
-{
-    block_function=block;
-    number_of_timers=0;
-    size_of_pqueue=10;
-    timers=(timer *)malloc(sizeof(timer)*size_of_pqueue);
-    thunks=0;
-}