source: src/libcfa/concurrency/kernel @ de6319f

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerwith_gc
Last change on this file since de6319f was de6319f, checked in by Thierry Delisle <tdelisle@…>, 4 years ago

Implemented clusters and added many constructors for threads/coroutines/processors

  • Property mode set to 100644
File size: 3.7 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// kernel --
8//
9// Author           : Thierry Delisle
10// Created On       : Tue Jan 17 12:27:26 2017
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Tue Apr 10 14:46:49 2018
13// Update Count     : 10
14//
15
16#pragma once
17
18#include <stdbool.h>
19
20#include "invoke.h"
21#include "time_t.h"
22
23extern "C" {
24#include <pthread.h>
25}
26
27//-----------------------------------------------------------------------------
28// Locks
29struct semaphore {
30        __spinlock_t lock;
31        int count;
32        __queue_t(thread_desc) waiting;
33};
34
35void  ?{}(semaphore & this, int count = 1);
36void ^?{}(semaphore & this);
37void   P (semaphore & this);
38void   V (semaphore & this);
39
40
41//-----------------------------------------------------------------------------
42// Cluster
43struct cluster {
44        // Ready queue locks
45        __spinlock_t ready_queue_lock;
46
47        // Ready queue for threads
48        __queue_t(thread_desc) ready_queue;
49
50        // Name of the cluster
51        const char * name;
52
53        // Preemption rate on this cluster
54        Duration preemption_rate;
55};
56
57extern struct cluster * mainCluster;
58extern Duration default_preemption();
59
60void ?{} (cluster & this, const char * name, Duration preemption_rate);
61void ^?{}(cluster & this);
62
63static inline void ?{} (cluster & this)                           { this{"Anonymous Cluster", default_preemption()}; }
64static inline void ?{} (cluster & this, Duration preemption_rate) { this{"Anonymous Cluster", preemption_rate}; }
65static inline void ?{} (cluster & this, const char * name)        { this{name, default_preemption()}; }
66
67//-----------------------------------------------------------------------------
68// Processor
69enum FinishOpCode { No_Action, Release, Schedule, Release_Schedule, Release_Multi, Release_Multi_Schedule };
70
71//TODO use union, many of these fields are mutually exclusive (i.e. MULTI vs NOMULTI)
72struct FinishAction {
73        FinishOpCode action_code;
74        thread_desc * thrd;
75        __spinlock_t * lock;
76        __spinlock_t ** locks;
77        unsigned short lock_count;
78        thread_desc ** thrds;
79        unsigned short thrd_count;
80};
81static inline void ?{}(FinishAction & this) {
82        this.action_code = No_Action;
83        this.thrd = NULL;
84        this.lock = NULL;
85}
86static inline void ^?{}(FinishAction & this) {}
87
88// Processor
89coroutine processorCtx_t {
90        struct processor * proc;
91};
92
93// Wrapper around kernel threads
94struct processor {
95        // Main state
96        // Coroutine ctx who does keeps the state of the processor
97        struct processorCtx_t runner;
98
99        // Cluster from which to get threads
100        cluster * cltr;
101
102        // Name of the processor
103        const char * name;
104
105        // Handle to pthreads
106        pthread_t kernel_thread;
107
108        // Termination
109        // Set to true to notify the processor should terminate
110        volatile bool do_terminate;
111
112        // Termination synchronisation
113        semaphore terminated;
114
115        // RunThread data
116        // Action to do after a thread is ran
117        struct FinishAction finish;
118
119        // Preemption data
120        // Node which is added in the discrete event simulaiton
121        struct alarm_node_t * preemption_alarm;
122
123        // If true, a preemption was triggered in an unsafe region, the processor must preempt as soon as possible
124        bool pending_preemption;
125
126#ifdef __CFA_DEBUG__
127        // Last function to enable preemption on this processor
128        const char * last_enable;
129#endif
130};
131
132void  ?{}(processor & this, const char * name, cluster & cltr);
133void ^?{}(processor & this);
134
135static inline void  ?{}(processor & this)                    { this{ "Anonymous Processor", *mainCluster}; }
136static inline void  ?{}(processor & this, cluster & cltr)    { this{ "Anonymous Processor", cltr}; }
137static inline void  ?{}(processor & this, const char * name) { this{name, *mainCluster }; }
138
139// Local Variables: //
140// mode: c //
141// tab-width: 4 //
142// End: //
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