1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2020 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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7 | // kernel/fwd.hfa -- |
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8 | // |
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9 | // Author : Thierry Delisle |
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10 | // Created On : Thu Jul 30 16:46:41 2020 |
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11 | // Last Modified By : |
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12 | // Last Modified On : |
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13 | // Update Count : |
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14 | // |
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15 | |
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16 | #include "bits/defs.hfa" |
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17 | #include "bits/debug.hfa" |
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18 | |
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19 | #if !defined(__cforall_thread__) |
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20 | #error non-thread source file includes kernel/fwd.hfa |
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21 | #endif |
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22 | |
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23 | struct $thread; |
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24 | struct processor; |
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25 | struct cluster; |
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26 | |
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27 | #ifdef __cforall |
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28 | extern "C" { |
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29 | extern "Cforall" { |
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30 | extern __attribute__((aligned(128))) thread_local struct KernelThreadData { |
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31 | struct $thread * volatile this_thread; |
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32 | struct processor * volatile this_processor; |
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33 | struct __stats_t * volatile this_stats; |
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34 | |
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35 | struct { |
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36 | volatile unsigned short disable_count; |
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37 | volatile bool enabled; |
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38 | volatile bool in_progress; |
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39 | } preemption_state; |
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40 | |
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41 | #if defined(__SIZEOF_INT128__) |
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42 | __uint128_t rand_seed; |
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43 | #else |
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44 | uint64_t rand_seed; |
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45 | #endif |
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46 | } kernelTLS __attribute__ ((tls_model ( "initial-exec" ))); |
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47 | } |
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48 | |
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49 | #ifdef __ARM_ARCH |
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50 | // function prototypes are only really used by these macros on ARM |
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51 | void disable_global_interrupts(); |
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52 | void enable_global_interrupts(); |
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53 | |
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54 | #define TL_GET( member ) ( { __typeof__( kernelTLS.member ) target; \ |
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55 | disable_global_interrupts(); \ |
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56 | target = kernelTLS.member; \ |
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57 | enable_global_interrupts(); \ |
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58 | target; } ) |
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59 | #define TL_SET( member, value ) disable_global_interrupts(); \ |
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60 | kernelTLS.member = value; \ |
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61 | enable_global_interrupts(); |
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62 | #else |
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63 | #define TL_GET( member ) kernelTLS.member |
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64 | #define TL_SET( member, value ) kernelTLS.member = value; |
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65 | #endif |
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66 | |
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67 | extern void disable_interrupts(); |
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68 | extern void enable_interrupts_noPoll(); |
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69 | extern void enable_interrupts( __cfaabi_dbg_ctx_param ); |
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70 | |
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71 | enum __Preemption_Reason { __NO_PREEMPTION, __ALARM_PREEMPTION, __POLL_PREEMPTION, __MANUAL_PREEMPTION }; |
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72 | |
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73 | extern "Cforall" { |
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74 | extern void park( __cfaabi_dbg_ctx_param ); |
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75 | extern void unpark( struct $thread * this __cfaabi_dbg_ctx_param2 ); |
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76 | static inline struct $thread * active_thread () { return TL_GET( this_thread ); } |
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77 | |
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78 | extern bool force_yield( enum __Preemption_Reason ); |
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79 | } |
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80 | } |
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81 | #endif |
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