[8118303] | 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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[75a17f1] | 7 | // kernel --
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[8118303] | 8 | //
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| 9 | // Author : Thierry Delisle
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[75f3522] | 10 | // Created On : Tue Jan 17 12:27:26 2017
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[6b0b624] | 11 | // Last Modified By : Peter A. Buhr
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[e3fea42] | 12 | // Last Modified On : Tue Feb 4 12:29:26 2020
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| 13 | // Update Count : 22
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[8118303] | 14 | //
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| 15 |
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[6b0b624] | 16 | #pragma once
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[8118303] | 17 |
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[c84e80a] | 18 | #include <stdbool.h>
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[92976d9] | 19 | #include <stdint.h>
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[8118303] | 20 |
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[bd98b58] | 21 | #include "invoke.h"
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[73abe95] | 22 | #include "time_t.hfa"
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[d76bd79] | 23 | #include "coroutine.hfa"
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[bd98b58] | 24 |
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[8def349] | 25 | extern "C" {
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| 26 | #include <pthread.h>
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[6b4cdd3] | 27 | #include <semaphore.h>
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[8def349] | 28 | }
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| 29 |
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[db6f06a] | 30 | //-----------------------------------------------------------------------------
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| 31 | // Locks
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[bdeba0b] | 32 | struct semaphore {
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[ea7d2b0] | 33 | __spinlock_t lock;
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[bdeba0b] | 34 | int count;
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[ac2b598] | 35 | __queue_t($thread) waiting;
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[9c31349] | 36 | };
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| 37 |
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[242a902] | 38 | void ?{}(semaphore & this, int count = 1);
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| 39 | void ^?{}(semaphore & this);
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[71c8b7e] | 40 | bool P (semaphore & this);
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[f0ce5f4] | 41 | bool V (semaphore & this);
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[d384787] | 42 | bool V (semaphore & this, unsigned count);
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[9c31349] | 43 |
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[db6f06a] | 44 |
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[bd98b58] | 45 | //-----------------------------------------------------------------------------
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[de94a60] | 46 | // Processor
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[de6319f] | 47 | extern struct cluster * mainCluster;
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[bd98b58] | 48 |
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[e60e0dc] | 49 | // Processor
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[094476d] | 50 | coroutine processorCtx_t {
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| 51 | struct processor * proc;
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| 52 | };
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| 53 |
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[e60e0dc] | 54 | // Wrapper around kernel threads
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[c84e80a] | 55 | struct processor {
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[e60e0dc] | 56 | // Main state
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[025278e] | 57 | // Coroutine ctx who does keeps the state of the processor
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[094476d] | 58 | struct processorCtx_t runner;
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[025278e] | 59 |
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| 60 | // Cluster from which to get threads
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[de94a60] | 61 | struct cluster * cltr;
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[025278e] | 62 |
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[de6319f] | 63 | // Name of the processor
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| 64 | const char * name;
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| 65 |
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[025278e] | 66 | // Handle to pthreads
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| 67 | pthread_t kernel_thread;
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[2ac095d] | 68 |
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[e60e0dc] | 69 | // RunThread data
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[025278e] | 70 | // Action to do after a thread is ran
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[ac2b598] | 71 | $thread * destroyer;
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[c81ebf9] | 72 |
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[e60e0dc] | 73 | // Preemption data
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[025278e] | 74 | // Node which is added in the discrete event simulaiton
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| 75 | struct alarm_node_t * preemption_alarm;
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| 76 |
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| 77 | // If true, a preemption was triggered in an unsafe region, the processor must preempt as soon as possible
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| 78 | bool pending_preemption;
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[c81ebf9] | 79 |
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[92e7631] | 80 | // Idle lock (kernel semaphore)
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| 81 | __bin_sem_t idle;
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[85b1deb] | 82 |
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| 83 | // Termination
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| 84 | // Set to true to notify the processor should terminate
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| 85 | volatile bool do_terminate;
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| 86 |
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[92e7631] | 87 | // Termination synchronisation (user semaphore)
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[85b1deb] | 88 | semaphore terminated;
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[de94a60] | 89 |
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[27f5f71] | 90 | // pthread Stack
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| 91 | void * stack;
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| 92 |
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[de94a60] | 93 | // Link lists fields
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[ea8b2f7] | 94 | struct __dbg_node_proc {
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[de94a60] | 95 | struct processor * next;
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| 96 | struct processor * prev;
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| 97 | } node;
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[14a61b5] | 98 |
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[e60e0dc] | 99 | #ifdef __CFA_DEBUG__
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[025278e] | 100 | // Last function to enable preemption on this processor
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[cdbfab0] | 101 | const char * last_enable;
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[e60e0dc] | 102 | #endif
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[c84e80a] | 103 | };
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| 104 |
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[e3fea42] | 105 | void ?{}(processor & this, const char name[], struct cluster & cltr);
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[242a902] | 106 | void ^?{}(processor & this);
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[c84e80a] | 107 |
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[de6319f] | 108 | static inline void ?{}(processor & this) { this{ "Anonymous Processor", *mainCluster}; }
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[de94a60] | 109 | static inline void ?{}(processor & this, struct cluster & cltr) { this{ "Anonymous Processor", cltr}; }
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[e3fea42] | 110 | static inline void ?{}(processor & this, const char name[]) { this{name, *mainCluster }; }
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[de6319f] | 111 |
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[c7a900a] | 112 | static inline [processor *&, processor *& ] __get( processor & this ) __attribute__((const)) { return this.node.[next, prev]; }
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[de94a60] | 113 |
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[92976d9] | 114 | //-----------------------------------------------------------------------------
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| 115 | // I/O
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[61dd73d] | 116 | struct __io_data;
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[92976d9] | 117 |
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[5dadc9b7] | 118 | #define CFA_CLUSTER_IO_POLLER_USER_THREAD 1 << 0 // 0x1
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| 119 | #define CFA_CLUSTER_IO_POLLER_THREAD_SUBMITS 1 << 1 // 0x2
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| 120 | // #define CFA_CLUSTER_IO_POLLER_KERNEL_SIDE 1 << 2 // 0x4
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[dd4e2d7] | 121 | #define CFA_CLUSTER_IO_BUFFLEN_OFFSET 16
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[b6f2b213] | 122 |
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[de94a60] | 123 | //-----------------------------------------------------------------------------
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| 124 | // Cluster
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| 125 | struct cluster {
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| 126 | // Ready queue locks
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| 127 | __spinlock_t ready_queue_lock;
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| 128 |
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| 129 | // Ready queue for threads
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[ac2b598] | 130 | __queue_t($thread) ready_queue;
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[de94a60] | 131 |
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| 132 | // Name of the cluster
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| 133 | const char * name;
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| 134 |
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| 135 | // Preemption rate on this cluster
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| 136 | Duration preemption_rate;
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| 137 |
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| 138 | // List of processors
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[92e7631] | 139 | __spinlock_t idle_lock;
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[de94a60] | 140 | __dllist_t(struct processor) procs;
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| 141 | __dllist_t(struct processor) idles;
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[d4e68a6] | 142 | unsigned int nprocessors;
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[de94a60] | 143 |
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[d4e68a6] | 144 | // List of threads
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[a1a17a74] | 145 | __spinlock_t thread_list_lock;
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[ac2b598] | 146 | __dllist_t(struct $thread) threads;
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[d4e68a6] | 147 | unsigned int nthreads;
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[a1a17a74] | 148 |
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[de94a60] | 149 | // Link lists fields
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[ea8b2f7] | 150 | struct __dbg_node_cltr {
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[de94a60] | 151 | cluster * next;
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| 152 | cluster * prev;
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| 153 | } node;
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[92976d9] | 154 |
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[61dd73d] | 155 | struct __io_data * io;
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[038be32] | 156 |
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| 157 | #if !defined(__CFA_NO_STATISTICS__)
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| 158 | bool print_stats;
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| 159 | #endif
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[de94a60] | 160 | };
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| 161 | extern Duration default_preemption();
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| 162 |
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[dd4e2d7] | 163 | void ?{} (cluster & this, const char name[], Duration preemption_rate, unsigned flags);
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[de94a60] | 164 | void ^?{}(cluster & this);
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| 165 |
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[dd4e2d7] | 166 | static inline void ?{} (cluster & this) { this{"Anonymous Cluster", default_preemption(), 0}; }
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| 167 | static inline void ?{} (cluster & this, Duration preemption_rate) { this{"Anonymous Cluster", preemption_rate, 0}; }
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| 168 | static inline void ?{} (cluster & this, const char name[]) { this{name, default_preemption(), 0}; }
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| 169 | static inline void ?{} (cluster & this, unsigned flags) { this{"Anonymous Cluster", default_preemption(), flags}; }
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| 170 | static inline void ?{} (cluster & this, Duration preemption_rate, unsigned flags) { this{"Anonymous Cluster", preemption_rate, flags}; }
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| 171 | static inline void ?{} (cluster & this, const char name[], unsigned flags) { this{name, default_preemption(), flags}; }
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[de94a60] | 172 |
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[c7a900a] | 173 | static inline [cluster *&, cluster *& ] __get( cluster & this ) __attribute__((const)) { return this.node.[next, prev]; }
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[de94a60] | 174 |
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[0f2c555] | 175 | static inline struct processor * active_processor() { return TL_GET( this_processor ); } // UNSAFE
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| 176 | static inline struct cluster * active_cluster () { return TL_GET( this_processor )->cltr; }
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[d4e68a6] | 177 |
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[038be32] | 178 | #if !defined(__CFA_NO_STATISTICS__)
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| 179 | static inline void print_stats_at_exit( cluster & this ) {
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| 180 | this.print_stats = true;
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| 181 | }
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| 182 | #endif
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| 183 |
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[8118303] | 184 | // Local Variables: //
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[6b0b624] | 185 | // mode: c //
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| 186 | // tab-width: 4 //
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[8118303] | 187 | // End: //
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