[8118303] | 1 | // -*- Mode: CFA -*- |
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| 2 | // |
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| 3 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo |
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| 4 | // |
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| 5 | // The contents of this file are covered under the licence agreement in the |
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| 6 | // file "LICENCE" distributed with Cforall. |
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| 7 | // |
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[75a17f1] | 8 | // kernel -- |
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[8118303] | 9 | // |
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| 10 | // Author : Thierry Delisle |
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[75f3522] | 11 | // Created On : Tue Jan 17 12:27:26 2017 |
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[8118303] | 12 | // Last Modified By : Thierry Delisle |
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| 13 | // Last Modified On : -- |
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| 14 | // Update Count : 0 |
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| 15 | // |
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| 16 | |
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| 17 | #ifndef KERNEL_H |
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| 18 | #define KERNEL_H |
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| 19 | |
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[c84e80a] | 20 | #include <stdbool.h> |
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[8118303] | 21 | |
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[bd98b58] | 22 | #include "invoke.h" |
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| 23 | |
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[8def349] | 24 | extern "C" { |
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| 25 | #include <pthread.h> |
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| 26 | } |
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| 27 | |
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[db6f06a] | 28 | //----------------------------------------------------------------------------- |
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| 29 | // Locks |
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[e60e0dc] | 30 | void lock ( spinlock * DEBUG_CTX_PARAM2 ); // Lock the spinlock, spin if already acquired |
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| 31 | void lock_yield( spinlock * DEBUG_CTX_PARAM2 ); // Lock the spinlock, yield repeatedly if already acquired |
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| 32 | bool try_lock ( spinlock * DEBUG_CTX_PARAM2 ); // Lock the spinlock, return false if already acquired |
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| 33 | void unlock ( spinlock * ); // Unlock the spinlock |
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[db6f06a] | 34 | |
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[bdeba0b] | 35 | struct semaphore { |
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| 36 | spinlock lock; |
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| 37 | int count; |
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| 38 | __thread_queue_t waiting; |
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[9c31349] | 39 | }; |
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| 40 | |
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[bdeba0b] | 41 | void ?{}(semaphore * this, int count = 1); |
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| 42 | void ^?{}(semaphore * this); |
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| 43 | void P(semaphore * this); |
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| 44 | void V(semaphore * this); |
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[9c31349] | 45 | |
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[db6f06a] | 46 | |
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[bd98b58] | 47 | //----------------------------------------------------------------------------- |
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| 48 | // Cluster |
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| 49 | struct cluster { |
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[e60e0dc] | 50 | spinlock ready_queue_lock; // Ready queue locks |
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| 51 | __thread_queue_t ready_queue; // Ready queue for threads |
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| 52 | unsigned long long int preemption; // Preemption rate on this cluster |
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[bd98b58] | 53 | }; |
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| 54 | |
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| 55 | void ?{}(cluster * this); |
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| 56 | void ^?{}(cluster * this); |
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| 57 | |
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| 58 | //----------------------------------------------------------------------------- |
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| 59 | // Processor |
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[0c78741] | 60 | enum FinishOpCode { No_Action, Release, Schedule, Release_Schedule, Release_Multi, Release_Multi_Schedule }; |
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| 61 | |
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| 62 | //TODO use union, many of these fields are mutually exclusive (i.e. MULTI vs NOMULTI) |
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[db6f06a] | 63 | struct FinishAction { |
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| 64 | FinishOpCode action_code; |
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[348006f] | 65 | thread_desc * thrd; |
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[db6f06a] | 66 | spinlock * lock; |
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[0c78741] | 67 | spinlock ** locks; |
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| 68 | unsigned short lock_count; |
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| 69 | thread_desc ** thrds; |
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| 70 | unsigned short thrd_count; |
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[8fcbb4c] | 71 | }; |
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[2ac095d] | 72 | static inline void ?{}(FinishAction * this) { |
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[db6f06a] | 73 | this->action_code = No_Action; |
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| 74 | this->thrd = NULL; |
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| 75 | this->lock = NULL; |
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| 76 | } |
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| 77 | static inline void ^?{}(FinishAction * this) {} |
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[8fcbb4c] | 78 | |
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[e60e0dc] | 79 | // Processor |
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| 80 | // Wrapper around kernel threads |
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[c84e80a] | 81 | struct processor { |
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[e60e0dc] | 82 | // Main state |
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| 83 | struct processorCtx_t * runner; // Coroutine ctx who does keeps the state of the processor |
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| 84 | cluster * cltr; // Cluster from which to get threads |
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| 85 | pthread_t kernel_thread; // Handle to pthreads |
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[db6f06a] | 86 | |
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[e60e0dc] | 87 | // Termination |
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| 88 | volatile bool do_terminate; // Set to true to notify the processor should terminate |
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| 89 | semaphore terminated; // Termination synchronisation |
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[c81ebf9] | 90 | |
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[e60e0dc] | 91 | // RunThread data |
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| 92 | struct FinishAction finish; // Action to do after a thread is ran |
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[c81ebf9] | 93 | |
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[e60e0dc] | 94 | // Preemption data |
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| 95 | struct alarm_node_t * preemption_alarm; // Node which is added in the discrete event simulaiton |
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| 96 | bool pending_preemption; // If true, a preemption was triggered in an unsafe region, the processor must preempt as soon as possible |
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[4e6fb8e] | 97 | |
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[e60e0dc] | 98 | #ifdef __CFA_DEBUG__ |
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| 99 | char * last_enable; // Last function to enable preemption on this processor |
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| 100 | #endif |
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[c84e80a] | 101 | }; |
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| 102 | |
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[8def349] | 103 | void ?{}(processor * this); |
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[bd98b58] | 104 | void ?{}(processor * this, cluster * cltr); |
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[c84e80a] | 105 | void ^?{}(processor * this); |
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| 106 | |
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[8118303] | 107 | #endif //KERNEL_H |
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| 108 | |
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| 109 | // Local Variables: // |
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[fa21ac9] | 110 | // mode: CFA // |
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| 111 | // tab-width: 6 // |
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[8118303] | 112 | // End: // |
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