source: libcfa/src/concurrency/kernel.hfa @ 79e261b7

ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change on this file since 79e261b7 was 6d1790c, checked in by Thierry Delisle <tdelisle@…>, 4 years ago

Fixed some warnings in libcfa

  • Property mode set to 100644
File size: 9.0 KB
RevLine 
[8118303]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//
[75a17f1]7// kernel --
[8118303]8//
9// Author           : Thierry Delisle
[75f3522]10// Created On       : Tue Jan 17 12:27:26 2017
[6b0b624]11// Last Modified By : Peter A. Buhr
[e3fea42]12// Last Modified On : Tue Feb  4 12:29:26 2020
13// Update Count     : 22
[8118303]14//
15
[6b0b624]16#pragma once
[8118303]17
[bd98b58]18#include "invoke.h"
[73abe95]19#include "time_t.hfa"
[d76bd79]20#include "coroutine.hfa"
[bd98b58]21
[1eb239e4]22#include "containers/list.hfa"
[64a7146]23
[8def349]24extern "C" {
[c402739f]25        #include <bits/pthreadtypes.h>
26        #include <linux/types.h>
[8def349]27}
28
[db6f06a]29//-----------------------------------------------------------------------------
30// Locks
[bdeba0b]31struct semaphore {
[ea7d2b0]32        __spinlock_t lock;
[bdeba0b]33        int count;
[ac2b598]34        __queue_t($thread) waiting;
[9c31349]35};
36
[242a902]37void  ?{}(semaphore & this, int count = 1);
38void ^?{}(semaphore & this);
[71c8b7e]39bool   P (semaphore & this);
[f0ce5f4]40bool   V (semaphore & this);
[d384787]41bool   V (semaphore & this, unsigned count);
[9c31349]42
[db6f06a]43
[bd98b58]44//-----------------------------------------------------------------------------
[de94a60]45// Processor
[de6319f]46extern struct cluster * mainCluster;
[bd98b58]47
[9b1dcc2]48// Processor id, required for scheduling threads
49struct __processor_id_t {
[58d64a4]50        unsigned id:24;
51        bool full_proc:1;
[8834751]52
53        #if !defined(__CFA_NO_STATISTICS__)
54                struct __stats_t * stats;
55        #endif
[9b1dcc2]56};
57
[094476d]58coroutine processorCtx_t {
59        struct processor * proc;
60};
61
[e60e0dc]62// Wrapper around kernel threads
[37ba662]63struct __attribute__((aligned(128))) processor {
[e60e0dc]64        // Main state
[37ba662]65        inline __processor_id_t;
[025278e]66
67        // Cluster from which to get threads
[de94a60]68        struct cluster * cltr;
[025278e]69
[37ba662]70        // Set to true to notify the processor should terminate
71        volatile bool do_terminate;
72
73        // Coroutine ctx who does keeps the state of the processor
74        struct processorCtx_t runner;
75
[de6319f]76        // Name of the processor
77        const char * name;
78
[025278e]79        // Handle to pthreads
80        pthread_t kernel_thread;
[2ac095d]81
[e60e0dc]82        // Preemption data
[025278e]83        // Node which is added in the discrete event simulaiton
84        struct alarm_node_t * preemption_alarm;
85
86        // If true, a preemption was triggered in an unsafe region, the processor must preempt as soon as possible
87        bool pending_preemption;
[c81ebf9]88
[92e7631]89        // Idle lock (kernel semaphore)
90        __bin_sem_t idle;
[85b1deb]91
[92e7631]92        // Termination synchronisation (user semaphore)
[85b1deb]93        semaphore terminated;
[de94a60]94
[27f5f71]95        // pthread Stack
96        void * stack;
97
[de94a60]98        // Link lists fields
[1eb239e4]99        DLISTED_MGD_IMPL_IN(processor)
[14a61b5]100
[c34ebf2]101        #if !defined(__CFA_NO_STATISTICS__)
[69fbc61]102                int print_stats;
[c34ebf2]103                bool print_halts;
104        #endif
105
[e60e0dc]106#ifdef __CFA_DEBUG__
[025278e]107        // Last function to enable preemption on this processor
[cdbfab0]108        const char * last_enable;
[e60e0dc]109#endif
[c84e80a]110};
111
[e3fea42]112void  ?{}(processor & this, const char name[], struct cluster & cltr);
[242a902]113void ^?{}(processor & this);
[c84e80a]114
[de6319f]115static inline void  ?{}(processor & this)                    { this{ "Anonymous Processor", *mainCluster}; }
[de94a60]116static inline void  ?{}(processor & this, struct cluster & cltr)    { this{ "Anonymous Processor", cltr}; }
[e3fea42]117static inline void  ?{}(processor & this, const char name[]) { this{name, *mainCluster }; }
[de6319f]118
[1eb239e4]119DLISTED_MGD_IMPL_OUT(processor)
[de94a60]120
[92976d9]121//-----------------------------------------------------------------------------
122// I/O
[61dd73d]123struct __io_data;
[92976d9]124
[f00b26d4]125// IO poller user-thread
126// Not using the "thread" keyword because we want to control
127// more carefully when to start/stop it
128struct $io_ctx_thread {
129        struct __io_data * ring;
130        single_sem sem;
131        volatile bool done;
132        $thread self;
133};
134
135
136struct io_context {
137        $io_ctx_thread thrd;
138};
139
140struct io_context_params {
141        int num_entries;
142        int num_ready;
143        int submit_aff;
144        bool eager_submits:1;
145        bool poller_submits:1;
146        bool poll_submit:1;
147        bool poll_complete:1;
148};
[de94a60]149
[f00b26d4]150void  ?{}(io_context_params & this);
151
152void  ?{}(io_context & this, struct cluster & cl);
153void  ?{}(io_context & this, struct cluster & cl, const io_context_params & params);
154void ^?{}(io_context & this);
155
156struct io_cancellation {
[c402739f]157        __u64 target;
[f00b26d4]158};
159
160static inline void  ?{}(io_cancellation & this) { this.target = -1u; }
[6d1790c]161static inline void ^?{}(io_cancellation &) {}
[f00b26d4]162bool cancel(io_cancellation & this);
[7768b8d]163
164//-----------------------------------------------------------------------------
165// Cluster Tools
[dca5802]166
167// Intrusives lanes which are used by the relaxed ready queue
[61d7bec]168struct __attribute__((aligned(128))) __intrusive_lane_t;
[dca5802]169void  ?{}(__intrusive_lane_t & this);
170void ^?{}(__intrusive_lane_t & this);
[7768b8d]171
[61d7bec]172// Counter used for wether or not the lanes are all empty
173struct __attribute__((aligned(128))) __snzi_node_t;
174struct __snzi_t {
175        unsigned mask;
176        int root;
177        __snzi_node_t * nodes;
178};
[b798713]179
[61d7bec]180void  ?{}( __snzi_t & this, unsigned depth );
181void ^?{}( __snzi_t & this );
[b798713]182
183//TODO adjust cache size to ARCHITECTURE
[dca5802]184// Structure holding the relaxed ready queue
[37ba662]185struct __ready_queue_t {
[dca5802]186        // Data tracking how many/which lanes are used
187        // Aligned to 128 for cache locality
[61d7bec]188        __snzi_t snzi;
[dca5802]189
190        // Data tracking the actual lanes
191        // On a seperate cacheline from the used struct since
192        // used can change on each push/pop but this data
193        // only changes on shrink/grow
[37ba662]194        struct {
[dca5802]195                // Arary of lanes
196                __intrusive_lane_t * volatile data;
197
198                // Number of lanes (empty or not)
[b798713]199                volatile size_t count;
[dca5802]200        } lanes;
[b798713]201};
202
203void  ?{}(__ready_queue_t & this);
204void ^?{}(__ready_queue_t & this);
205
[1eb239e4]206// Idle Sleep
207struct __cluster_idles {
208        // Spin lock protecting the queue
209        volatile uint64_t lock;
210
211        // Total number of processors
212        unsigned total;
213
214        // Total number of idle processors
215        unsigned idle;
216
217        // List of idle processors
218        dlist(processor, processor) list;
219};
220
[de94a60]221//-----------------------------------------------------------------------------
222// Cluster
[37ba662]223struct __attribute__((aligned(128))) cluster {
[de94a60]224        // Ready queue for threads
[b798713]225        __ready_queue_t ready_queue;
[de94a60]226
227        // Name of the cluster
228        const char * name;
229
230        // Preemption rate on this cluster
231        Duration preemption_rate;
232
[64a7146]233        // List of idle processors
[1eb239e4]234        __cluster_idles idles;
[de94a60]235
[d4e68a6]236        // List of threads
[a1a17a74]237        __spinlock_t thread_list_lock;
[ac2b598]238        __dllist_t(struct $thread) threads;
[d4e68a6]239        unsigned int nthreads;
[a1a17a74]240
[de94a60]241        // Link lists fields
[ea8b2f7]242        struct __dbg_node_cltr {
[de94a60]243                cluster * next;
244                cluster * prev;
245        } node;
[92976d9]246
[f00b26d4]247        struct {
248                io_context * ctxs;
249                unsigned cnt;
250        } io;
[038be32]251
252        #if !defined(__CFA_NO_STATISTICS__)
[8834751]253                struct __stats_t * stats;
[69fbc61]254                int print_stats;
[038be32]255        #endif
[de94a60]256};
257extern Duration default_preemption();
258
[f00b26d4]259void ?{} (cluster & this, const char name[], Duration preemption_rate, unsigned num_io, const io_context_params & io_params);
[de94a60]260void ^?{}(cluster & this);
261
[f00b26d4]262static inline void ?{} (cluster & this)                                            { io_context_params default_params;    this{"Anonymous Cluster", default_preemption(), 1, default_params}; }
263static inline void ?{} (cluster & this, Duration preemption_rate)                  { io_context_params default_params;    this{"Anonymous Cluster", preemption_rate, 1, default_params}; }
264static inline void ?{} (cluster & this, const char name[])                         { io_context_params default_params;    this{name, default_preemption(), 1, default_params}; }
265static inline void ?{} (cluster & this, unsigned num_io)                           { io_context_params default_params;    this{"Anonymous Cluster", default_preemption(), num_io, default_params}; }
266static inline void ?{} (cluster & this, Duration preemption_rate, unsigned num_io) { io_context_params default_params;    this{"Anonymous Cluster", preemption_rate, num_io, default_params}; }
267static inline void ?{} (cluster & this, const char name[], unsigned num_io)        { io_context_params default_params;    this{name, default_preemption(), num_io, default_params}; }
268static inline void ?{} (cluster & this, const io_context_params & io_params)                                            { this{"Anonymous Cluster", default_preemption(), 1, io_params}; }
269static inline void ?{} (cluster & this, Duration preemption_rate, const io_context_params & io_params)                  { this{"Anonymous Cluster", preemption_rate, 1, io_params}; }
270static inline void ?{} (cluster & this, const char name[], const io_context_params & io_params)                         { this{name, default_preemption(), 1, io_params}; }
271static inline void ?{} (cluster & this, unsigned num_io, const io_context_params & io_params)                           { this{"Anonymous Cluster", default_preemption(), num_io, io_params}; }
272static inline void ?{} (cluster & this, Duration preemption_rate, unsigned num_io, const io_context_params & io_params) { this{"Anonymous Cluster", preemption_rate, num_io, io_params}; }
273static inline void ?{} (cluster & this, const char name[], unsigned num_io, const io_context_params & io_params)        { this{name, default_preemption(), num_io, io_params}; }
[de94a60]274
[c7a900a]275static inline [cluster *&, cluster *& ] __get( cluster & this ) __attribute__((const)) { return this.node.[next, prev]; }
[de94a60]276
[8fc652e0]277static inline struct processor * active_processor() { return publicTLS_get( this_processor ); } // UNSAFE
278static inline struct cluster   * active_cluster  () { return publicTLS_get( this_processor )->cltr; }
[d4e68a6]279
[038be32]280#if !defined(__CFA_NO_STATISTICS__)
[8fc652e0]281        void print_stats_now( cluster & this, int flags );
282
[69fbc61]283        static inline void print_stats_at_exit( cluster & this, int flags ) {
284                this.print_stats |= flags;
[038be32]285        }
[c34ebf2]286
[69fbc61]287        static inline void print_stats_at_exit( processor & this, int flags ) {
288                this.print_stats |= flags;
[c34ebf2]289        }
290
291        void print_halts( processor & this );
[038be32]292#endif
293
[8118303]294// Local Variables: //
[6b0b624]295// mode: c //
296// tab-width: 4 //
[8118303]297// End: //
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