source: src/libcfa/concurrency/monitor @ 11a2d9b

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerresolv-newwith_gc
Last change on this file since 11a2d9b was 549c006, checked in by Thierry Delisle <tdelisle@…>, 4 years ago

Implemented out of order waitfor for destructors

  • Property mode set to 100644
File size: 3.6 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// monitor --
8//
9// Author           : Thierry Delisle
10// Created On       : Thd Feb 23 12:27:26 2017
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Sat Jul 22 09:59:01 2017
13// Update Count     : 3
14//
15
16#pragma once
17
18#include <stddef.h>
19
20#include <assert.h>
21#include "invoke.h"
22#include "stdlib"
23
24trait is_monitor(dtype T) {
25        monitor_desc * get_monitor( T & );
26        void ^?{}( T & mutex );
27};
28
29static inline void ?{}(monitor_desc & this) {
30        (this.lock){};
31        (this.entry_queue){};
32        (this.signal_stack){};
33        this.owner         = NULL;
34        this.recursion     = 0;
35        this.mask.accepted = NULL;
36        this.mask.clauses  = NULL;
37        this.mask.size     = 0;
38        this.dtor_node     = NULL;
39}
40
41// static inline int ?<?(monitor_desc* lhs, monitor_desc* rhs) {
42//      return ((intptr_t)lhs) < ((intptr_t)rhs);
43// }
44
45struct monitor_guard_t {
46        monitor_desc ** m;
47        int count;
48        monitor_desc ** prev_mntrs;
49        unsigned short  prev_count;
50        fptr_t          prev_func;
51};
52
53void ?{}( monitor_guard_t & this, monitor_desc ** m, int count, void (*func)() );
54void ^?{}( monitor_guard_t & this );
55
56
57struct monitor_dtor_guard_t {
58        monitor_desc * m;
59        monitor_desc ** prev_mntrs;
60        unsigned short  prev_count;
61        fptr_t          prev_func;
62};
63
64void ?{}( monitor_dtor_guard_t & this, monitor_desc ** m, void (*func)() );
65void ^?{}( monitor_dtor_guard_t & this );
66
67//-----------------------------------------------------------------------------
68// Internal scheduling
69
70struct __condition_criterion_t {
71        bool ready;                                             //Whether or not the criterion is met (True if met)
72        monitor_desc * target;                          //The monitor this criterion concerns
73        struct __condition_node_t * owner;              //The parent node to which this criterion belongs
74        __condition_criterion_t * next;         //Intrusive linked list Next field
75};
76
77struct __condition_node_t {
78        thread_desc * waiting_thread;                   //Thread that needs to be woken when all criteria are met
79        __condition_criterion_t * criteria;     //Array of criteria (Criterions are contiguous in memory)
80        unsigned short count;                           //Number of criterions in the criteria
81        __condition_node_t * next;                      //Intrusive linked list Next field
82        uintptr_t user_info;                            //Custom user info accessible before signalling
83};
84
85struct __condition_blocked_queue_t {
86        __condition_node_t * head;
87        __condition_node_t ** tail;
88};
89
90void ?{}( __condition_blocked_queue_t & );
91void append( __condition_blocked_queue_t *, __condition_node_t * );
92__condition_node_t * pop_head( __condition_blocked_queue_t * );
93
94struct condition {
95        __condition_blocked_queue_t blocked;    //Link list which contains the blocked threads as-well as the information needed to unblock them
96        monitor_desc ** monitors;                       //Array of monitor pointers (Monitors are NOT contiguous in memory)
97        unsigned short monitor_count;                   //Number of monitors in the array
98};
99
100static inline void ?{}( condition & this ) {
101        this.monitors = NULL;
102        this.monitor_count = 0;
103}
104
105static inline void ^?{}( condition & this ) {
106        free( this.monitors );
107}
108
109void wait( condition * this, uintptr_t user_info = 0 );
110bool signal( condition * this );
111bool signal_block( condition * this );
112static inline bool is_empty( condition * this ) { return !this->blocked.head; }
113uintptr_t front( condition * this );
114
115//-----------------------------------------------------------------------------
116// External scheduling
117
118struct __acceptable_t {
119        __monitor_group_t;
120        bool is_dtor;
121};
122
123void __waitfor_internal( const __waitfor_mask_t & mask, int duration );
124
125// Local Variables: //
126// mode: c //
127// tab-width: 4 //
128// End: //
Note: See TracBrowser for help on using the repository browser.