source: src/libcfa/concurrency/kernel @ 0f56058

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumwith_gc
Last change on this file since 0f56058 was 0f56058, checked in by Peter A. Buhr <pabuhr@…>, 5 years ago

divide "time" into type and functions

  • Property mode set to 100644
File size: 2.9 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        // Preemption rate on this cluster
51        Duration preemption_rate;
52};
53
54extern Duration default_preemption();
55
56void ?{} (cluster & this);
57void ^?{}(cluster & this);
58
59//-----------------------------------------------------------------------------
60// Processor
61enum FinishOpCode { No_Action, Release, Schedule, Release_Schedule, Release_Multi, Release_Multi_Schedule };
62
63//TODO use union, many of these fields are mutually exclusive (i.e. MULTI vs NOMULTI)
64struct FinishAction {
65        FinishOpCode action_code;
66        thread_desc * thrd;
67        __spinlock_t * lock;
68        __spinlock_t ** locks;
69        unsigned short lock_count;
70        thread_desc ** thrds;
71        unsigned short thrd_count;
72};
73static inline void ?{}(FinishAction & this) {
74        this.action_code = No_Action;
75        this.thrd = NULL;
76        this.lock = NULL;
77}
78static inline void ^?{}(FinishAction & this) {}
79
80// Processor
81coroutine processorCtx_t {
82        struct processor * proc;
83};
84
85// Wrapper around kernel threads
86struct processor {
87        // Main state
88        // Coroutine ctx who does keeps the state of the processor
89        struct processorCtx_t runner;
90
91        // Cluster from which to get threads
92        cluster * cltr;
93
94        // Handle to pthreads
95        pthread_t kernel_thread;
96
97        // Termination
98        // Set to true to notify the processor should terminate
99        volatile bool do_terminate;
100
101        // Termination synchronisation
102        semaphore terminated;
103
104        // RunThread data
105        // Action to do after a thread is ran
106        struct FinishAction finish;
107
108        // Preemption data
109        // Node which is added in the discrete event simulaiton
110        struct alarm_node_t * preemption_alarm;
111
112        // If true, a preemption was triggered in an unsafe region, the processor must preempt as soon as possible
113        bool pending_preemption;
114
115#ifdef __CFA_DEBUG__
116        // Last function to enable preemption on this processor
117        const char * last_enable;
118#endif
119};
120
121void  ?{}(processor & this);
122void  ?{}(processor & this, cluster * cltr);
123void ^?{}(processor & this);
124
125// Local Variables: //
126// mode: c //
127// tab-width: 4 //
128// End: //
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