[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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| 7 | // kernel.c -- |
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| 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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[0f56058] | 12 | // Last Modified On : Mon Apr 9 16:11:46 2018 |
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| 13 | // Update Count : 24 |
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[8118303] | 14 | // |
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| 15 | |
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| 16 | //C Includes |
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[c84e80a] | 17 | #include <stddef.h> |
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[214e8da] | 18 | #include <errno.h> |
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[ea8b2f7] | 19 | #include <string.h> |
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[eb2e723] | 20 | extern "C" { |
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[9d944b2] | 21 | #include <stdio.h> |
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[8fcbb4c] | 22 | #include <fenv.h> |
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[eb2e723] | 23 | #include <sys/resource.h> |
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[9d944b2] | 24 | #include <signal.h> |
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| 25 | #include <unistd.h> |
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[eb2e723] | 26 | } |
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[8118303] | 27 | |
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| 28 | //CFA Includes |
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[0f56058] | 29 | #include "time" |
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[2ac095d] | 30 | #include "kernel_private.h" |
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[c81ebf9] | 31 | #include "preemption.h" |
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[2ac095d] | 32 | #include "startup.h" |
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[8118303] | 33 | |
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| 34 | //Private includes |
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| 35 | #define __CFA_INVOKE_PRIVATE__ |
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| 36 | #include "invoke.h" |
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| 37 | |
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[2ac095d] | 38 | //Start and stop routine for the kernel, declared first to make sure they run first |
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| 39 | void kernel_startup(void) __attribute__(( constructor( STARTUP_PRIORITY_KERNEL ) )); |
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| 40 | void kernel_shutdown(void) __attribute__(( destructor ( STARTUP_PRIORITY_KERNEL ) )); |
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| 41 | |
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[8def349] | 42 | //----------------------------------------------------------------------------- |
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| 43 | // Kernel storage |
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[969b3fe] | 44 | KERNEL_STORAGE(cluster, mainCluster); |
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| 45 | KERNEL_STORAGE(processor, mainProcessor); |
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| 46 | KERNEL_STORAGE(thread_desc, mainThread); |
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[f2b12406] | 47 | KERNEL_STORAGE(machine_context_t, mainThreadCtx); |
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[8def349] | 48 | |
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[de6319f] | 49 | cluster * mainCluster; |
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| 50 | processor * mainProcessor; |
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[348006f] | 51 | thread_desc * mainThread; |
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[eb2e723] | 52 | |
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[ea8b2f7] | 53 | extern "C" { |
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| 54 | struct { __dllist_t(cluster) list; __spinlock_t lock; } __cfa_dbg_global_clusters; |
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| 55 | } |
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[de94a60] | 56 | |
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[bd98b58] | 57 | //----------------------------------------------------------------------------- |
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| 58 | // Global state |
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[14a61b5] | 59 | thread_local struct KernelThreadData kernelTLS = { |
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[b10affd] | 60 | NULL, |
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| 61 | NULL, |
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| 62 | NULL, |
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| 63 | { 1, false, false } |
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| 64 | }; |
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[c84e80a] | 65 | |
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| 66 | //----------------------------------------------------------------------------- |
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[de6319f] | 67 | // Struct to steal stack |
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[8def349] | 68 | struct current_stack_info_t { |
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[1c273d0] | 69 | machine_context_t ctx; |
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[8def349] | 70 | unsigned int size; // size of stack |
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| 71 | void *base; // base of stack |
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| 72 | void *storage; // pointer to stack |
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| 73 | void *limit; // stack grows towards stack limit |
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| 74 | void *context; // address of cfa_context_t |
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| 75 | void *top; // address of top of storage |
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[c84e80a] | 76 | }; |
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| 77 | |
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[242a902] | 78 | void ?{}( current_stack_info_t & this ) { |
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| 79 | CtxGet( this.ctx ); |
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| 80 | this.base = this.ctx.FP; |
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| 81 | this.storage = this.ctx.SP; |
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[8def349] | 82 | |
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| 83 | rlimit r; |
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[132fad4] | 84 | getrlimit( RLIMIT_STACK, &r); |
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[242a902] | 85 | this.size = r.rlim_cur; |
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[8def349] | 86 | |
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[242a902] | 87 | this.limit = (void *)(((intptr_t)this.base) - this.size); |
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[9236060] | 88 | this.context = &storage_mainThreadCtx; |
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[242a902] | 89 | this.top = this.base; |
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[8def349] | 90 | } |
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| 91 | |
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[de6319f] | 92 | //----------------------------------------------------------------------------- |
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| 93 | // Main thread construction |
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[65deb18] | 94 | void ?{}( coStack_t & this, current_stack_info_t * info) with( this ) { |
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| 95 | size = info->size; |
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| 96 | storage = info->storage; |
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| 97 | limit = info->limit; |
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| 98 | base = info->base; |
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| 99 | context = info->context; |
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| 100 | top = info->top; |
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| 101 | userStack = true; |
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[8def349] | 102 | } |
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| 103 | |
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[65deb18] | 104 | void ?{}( coroutine_desc & this, current_stack_info_t * info) with( this ) { |
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| 105 | stack{ info }; |
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| 106 | name = "Main Thread"; |
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| 107 | errno_ = 0; |
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| 108 | state = Start; |
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| 109 | starter = NULL; |
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[8def349] | 110 | } |
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| 111 | |
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[65deb18] | 112 | void ?{}( thread_desc & this, current_stack_info_t * info) with( this ) { |
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| 113 | self_cor{ info }; |
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[82c948c] | 114 | curr_cor = &self_cor; |
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[de6319f] | 115 | curr_cluster = mainCluster; |
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[82c948c] | 116 | self_mon.owner = &this; |
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| 117 | self_mon.recursion = 1; |
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| 118 | self_mon_p = &self_mon; |
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| 119 | next = NULL; |
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[de94a60] | 120 | |
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| 121 | node.next = NULL; |
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| 122 | node.prev = NULL; |
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[a1a17a74] | 123 | doregister(curr_cluster, this); |
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[82c948c] | 124 | |
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| 125 | monitors{ &self_mon_p, 1, (fptr_t)0 }; |
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[8def349] | 126 | } |
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[c84e80a] | 127 | |
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[8def349] | 128 | //----------------------------------------------------------------------------- |
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| 129 | // Processor coroutine |
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[de6319f] | 130 | void ?{}(processorCtx_t & this) { |
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[39fea2f] | 131 | |
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[8def349] | 132 | } |
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| 133 | |
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[39fea2f] | 134 | // Construct the processor context of non-main processors |
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[242a902] | 135 | void ?{}(processorCtx_t & this, processor * proc, current_stack_info_t * info) { |
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| 136 | (this.__cor){ info }; |
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| 137 | this.proc = proc; |
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[8def349] | 138 | } |
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| 139 | |
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[de6319f] | 140 | void ?{}(processor & this, const char * name, cluster & cltr) with( this ) { |
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| 141 | this.name = name; |
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| 142 | this.cltr = &cltr; |
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[c40e7c5] | 143 | terminated{ 0 }; |
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| 144 | do_terminate = false; |
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| 145 | preemption_alarm = NULL; |
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| 146 | pending_preemption = false; |
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[094476d] | 147 | runner.proc = &this; |
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[8def349] | 148 | |
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[6b4cdd3] | 149 | sem_init(&idleLock, 0, 0); |
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| 150 | |
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[242a902] | 151 | start( &this ); |
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[c84e80a] | 152 | } |
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| 153 | |
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[65deb18] | 154 | void ^?{}(processor & this) with( this ){ |
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[ea8b2f7] | 155 | if( ! __atomic_load_n(&do_terminate, __ATOMIC_ACQUIRE) ) { |
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[36982fc] | 156 | __cfaabi_dbg_print_safe("Kernel : core %p signaling termination\n", &this); |
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[4dad189] | 157 | terminate(&this); |
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[ea8b2f7] | 158 | verify( __atomic_load_n(&do_terminate, __ATOMIC_SEQ_CST) ); |
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[14a61b5] | 159 | verify( kernelTLS.this_processor != &this); |
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[65deb18] | 160 | P( terminated ); |
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[14a61b5] | 161 | verify( kernelTLS.this_processor != &this); |
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[65deb18] | 162 | pthread_join( kernel_thread, NULL ); |
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[8def349] | 163 | } |
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[6b4cdd3] | 164 | |
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| 165 | sem_destroy(&idleLock); |
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[8def349] | 166 | } |
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| 167 | |
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[de6319f] | 168 | void ?{}(cluster & this, const char * name, Duration preemption_rate) with( this ) { |
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| 169 | this.name = name; |
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| 170 | this.preemption_rate = preemption_rate; |
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[65deb18] | 171 | ready_queue{}; |
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| 172 | ready_queue_lock{}; |
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[de94a60] | 173 | |
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| 174 | procs{ __get }; |
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| 175 | idles{ __get }; |
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[a1a17a74] | 176 | threads{ __get }; |
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[de94a60] | 177 | |
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| 178 | doregister(this); |
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[8def349] | 179 | } |
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| 180 | |
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[242a902] | 181 | void ^?{}(cluster & this) { |
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[de94a60] | 182 | unregister(this); |
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[c84e80a] | 183 | } |
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| 184 | |
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[75f3522] | 185 | //============================================================================================= |
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| 186 | // Kernel Scheduling logic |
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| 187 | //============================================================================================= |
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[8fcbb4c] | 188 | //Main of the processor contexts |
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[83a071f9] | 189 | void main(processorCtx_t & runner) { |
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| 190 | processor * this = runner.proc; |
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[094476d] | 191 | verify(this); |
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[c81ebf9] | 192 | |
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[36982fc] | 193 | __cfaabi_dbg_print_safe("Kernel : core %p starting\n", this); |
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[8118303] | 194 | |
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[de94a60] | 195 | doregister(this->cltr, this); |
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| 196 | |
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[75f3522] | 197 | { |
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[c81ebf9] | 198 | // Setup preemption data |
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| 199 | preemption_scope scope = { this }; |
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| 200 | |
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[36982fc] | 201 | __cfaabi_dbg_print_safe("Kernel : core %p started\n", this); |
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[8118303] | 202 | |
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[c81ebf9] | 203 | thread_desc * readyThread = NULL; |
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[ea8b2f7] | 204 | for( unsigned int spin_count = 0; ! __atomic_load_n(&this->do_terminate, __ATOMIC_SEQ_CST); spin_count++ ) |
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[75f3522] | 205 | { |
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[c81ebf9] | 206 | readyThread = nextThread( this->cltr ); |
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[75f3522] | 207 | |
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[c81ebf9] | 208 | if(readyThread) |
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| 209 | { |
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[14a61b5] | 210 | verify( ! kernelTLS.preemption_state.enabled ); |
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[4e6fb8e] | 211 | |
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[c81ebf9] | 212 | runThread(this, readyThread); |
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[75f3522] | 213 | |
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[14a61b5] | 214 | verify( ! kernelTLS.preemption_state.enabled ); |
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[4e6fb8e] | 215 | |
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[c81ebf9] | 216 | //Some actions need to be taken from the kernel |
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| 217 | finishRunning(this); |
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| 218 | |
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| 219 | spin_count = 0; |
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| 220 | } |
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| 221 | else |
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| 222 | { |
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[ea8b2f7] | 223 | // spin(this, &spin_count); |
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| 224 | halt(this); |
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[c81ebf9] | 225 | } |
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| 226 | } |
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| 227 | |
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[36982fc] | 228 | __cfaabi_dbg_print_safe("Kernel : core %p stopping\n", this); |
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[c84e80a] | 229 | } |
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[8118303] | 230 | |
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[de94a60] | 231 | unregister(this->cltr, this); |
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| 232 | |
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[4cedd9f] | 233 | V( this->terminated ); |
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[bdeba0b] | 234 | |
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[36982fc] | 235 | __cfaabi_dbg_print_safe("Kernel : core %p terminated\n", this); |
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[c84e80a] | 236 | } |
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| 237 | |
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[14a61b5] | 238 | // KERNEL ONLY |
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[1c273d0] | 239 | // runThread runs a thread by context switching |
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| 240 | // from the processor coroutine to the target thread |
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[348006f] | 241 | void runThread(processor * this, thread_desc * dst) { |
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[82c948c] | 242 | assert(dst->curr_cor); |
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[094476d] | 243 | coroutine_desc * proc_cor = get_coroutine(this->runner); |
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[82c948c] | 244 | coroutine_desc * thrd_cor = dst->curr_cor; |
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[1c273d0] | 245 | |
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[14a61b5] | 246 | // Reset the terminating actions here |
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[db6f06a] | 247 | this->finish.action_code = No_Action; |
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[8fcbb4c] | 248 | |
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[14a61b5] | 249 | // Update global state |
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| 250 | kernelTLS.this_thread = dst; |
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[75f3522] | 251 | |
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| 252 | // Context Switch to the thread |
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| 253 | ThreadCtxSwitch(proc_cor, thrd_cor); |
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| 254 | // when ThreadCtxSwitch returns we are back in the processor coroutine |
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| 255 | } |
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| 256 | |
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[14a61b5] | 257 | // KERNEL_ONLY |
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[82c948c] | 258 | void returnToKernel() { |
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[14a61b5] | 259 | coroutine_desc * proc_cor = get_coroutine(kernelTLS.this_processor->runner); |
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| 260 | coroutine_desc * thrd_cor = kernelTLS.this_thread->curr_cor = kernelTLS.this_coroutine; |
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[82c948c] | 261 | ThreadCtxSwitch(thrd_cor, proc_cor); |
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| 262 | } |
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| 263 | |
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[14a61b5] | 264 | // KERNEL_ONLY |
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[1c273d0] | 265 | // Once a thread has finished running, some of |
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[75f3522] | 266 | // its final actions must be executed from the kernel |
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[65deb18] | 267 | void finishRunning(processor * this) with( this->finish ) { |
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[09800e9] | 268 | verify( ! kernelTLS.preemption_state.enabled ); |
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| 269 | choose( action_code ) { |
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| 270 | case No_Action: |
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| 271 | break; |
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| 272 | case Release: |
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[65deb18] | 273 | unlock( *lock ); |
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[09800e9] | 274 | case Schedule: |
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[65deb18] | 275 | ScheduleThread( thrd ); |
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[09800e9] | 276 | case Release_Schedule: |
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[65deb18] | 277 | unlock( *lock ); |
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| 278 | ScheduleThread( thrd ); |
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[09800e9] | 279 | case Release_Multi: |
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[65deb18] | 280 | for(int i = 0; i < lock_count; i++) { |
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| 281 | unlock( *locks[i] ); |
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[0c78741] | 282 | } |
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[09800e9] | 283 | case Release_Multi_Schedule: |
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[65deb18] | 284 | for(int i = 0; i < lock_count; i++) { |
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| 285 | unlock( *locks[i] ); |
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[0c78741] | 286 | } |
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[65deb18] | 287 | for(int i = 0; i < thrd_count; i++) { |
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| 288 | ScheduleThread( thrds[i] ); |
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[0c78741] | 289 | } |
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[09800e9] | 290 | case Callback: |
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| 291 | callback(); |
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| 292 | default: |
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| 293 | abort("KERNEL ERROR: Unexpected action to run after thread"); |
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[8fcbb4c] | 294 | } |
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[c84e80a] | 295 | } |
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| 296 | |
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[0c92c9f] | 297 | // Handles spinning logic |
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| 298 | // TODO : find some strategy to put cores to sleep after some time |
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[c84e80a] | 299 | void spin(processor * this, unsigned int * spin_count) { |
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[6b4cdd3] | 300 | // (*spin_count)++; |
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| 301 | halt(this); |
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[c84e80a] | 302 | } |
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| 303 | |
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[14a61b5] | 304 | // KERNEL_ONLY |
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[0c92c9f] | 305 | // Context invoker for processors |
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| 306 | // This is the entry point for processors (kernel threads) |
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| 307 | // It effectively constructs a coroutine by stealing the pthread stack |
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[8def349] | 308 | void * CtxInvokeProcessor(void * arg) { |
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| 309 | processor * proc = (processor *) arg; |
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[14a61b5] | 310 | kernelTLS.this_processor = proc; |
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| 311 | kernelTLS.this_coroutine = NULL; |
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| 312 | kernelTLS.this_thread = NULL; |
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| 313 | kernelTLS.preemption_state.[enabled, disable_count] = [false, 1]; |
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[8def349] | 314 | // SKULLDUGGERY: We want to create a context for the processor coroutine |
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| 315 | // which is needed for the 2-step context switch. However, there is no reason |
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[1c273d0] | 316 | // to waste the perfectly valid stack create by pthread. |
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[8def349] | 317 | current_stack_info_t info; |
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| 318 | machine_context_t ctx; |
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| 319 | info.context = &ctx; |
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[094476d] | 320 | (proc->runner){ proc, &info }; |
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[8def349] | 321 | |
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[094476d] | 322 | __cfaabi_dbg_print_safe("Coroutine : created stack %p\n", get_coroutine(proc->runner)->stack.base); |
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[8fcbb4c] | 323 | |
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[0c92c9f] | 324 | //Set global state |
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[14a61b5] | 325 | kernelTLS.this_coroutine = get_coroutine(proc->runner); |
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| 326 | kernelTLS.this_thread = NULL; |
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[8def349] | 327 | |
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| 328 | //We now have a proper context from which to schedule threads |
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[094476d] | 329 | __cfaabi_dbg_print_safe("Kernel : core %p created (%p, %p)\n", proc, &proc->runner, &ctx); |
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[8def349] | 330 | |
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[1c273d0] | 331 | // SKULLDUGGERY: Since the coroutine doesn't have its own stack, we can't |
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| 332 | // resume it to start it like it normally would, it will just context switch |
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| 333 | // back to here. Instead directly call the main since we already are on the |
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[8def349] | 334 | // appropriate stack. |
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[094476d] | 335 | get_coroutine(proc->runner)->state = Active; |
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| 336 | main( proc->runner ); |
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| 337 | get_coroutine(proc->runner)->state = Halted; |
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[8def349] | 338 | |
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[0c92c9f] | 339 | // Main routine of the core returned, the core is now fully terminated |
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[094476d] | 340 | __cfaabi_dbg_print_safe("Kernel : core %p main ended (%p)\n", proc, &proc->runner); |
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[8def349] | 341 | |
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| 342 | return NULL; |
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[c84e80a] | 343 | } |
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| 344 | |
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[8def349] | 345 | void start(processor * this) { |
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[36982fc] | 346 | __cfaabi_dbg_print_safe("Kernel : Starting core %p\n", this); |
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[82ff5845] | 347 | |
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[8fcbb4c] | 348 | pthread_create( &this->kernel_thread, NULL, CtxInvokeProcessor, (void*)this ); |
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[eb2e723] | 349 | |
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[36982fc] | 350 | __cfaabi_dbg_print_safe("Kernel : core %p started\n", this); |
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[eb2e723] | 351 | } |
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| 352 | |
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[14a61b5] | 353 | // KERNEL_ONLY |
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[b69ea6b] | 354 | void kernel_first_resume(processor * this) { |
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[14a61b5] | 355 | coroutine_desc * src = kernelTLS.this_coroutine; |
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[094476d] | 356 | coroutine_desc * dst = get_coroutine(this->runner); |
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[b69ea6b] | 357 | |
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[14a61b5] | 358 | verify( ! kernelTLS.preemption_state.enabled ); |
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[b69ea6b] | 359 | |
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| 360 | create_stack(&dst->stack, dst->stack.size); |
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[094476d] | 361 | CtxStart(&this->runner, CtxInvokeCoroutine); |
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[b69ea6b] | 362 | |
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[14a61b5] | 363 | verify( ! kernelTLS.preemption_state.enabled ); |
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[b69ea6b] | 364 | |
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| 365 | dst->last = src; |
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| 366 | dst->starter = dst->starter ? dst->starter : src; |
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| 367 | |
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| 368 | // set state of current coroutine to inactive |
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| 369 | src->state = src->state == Halted ? Halted : Inactive; |
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| 370 | |
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| 371 | // set new coroutine that task is executing |
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[14a61b5] | 372 | kernelTLS.this_coroutine = dst; |
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[b69ea6b] | 373 | |
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| 374 | // SKULLDUGGERY normally interrupts are enable before leaving a coroutine ctxswitch. |
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| 375 | // Therefore, when first creating a coroutine, interrupts are enable before calling the main. |
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| 376 | // This is consistent with thread creation. However, when creating the main processor coroutine, |
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| 377 | // we wan't interrupts to be disabled. Therefore, we double-disable interrupts here so they will |
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| 378 | // stay disabled. |
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| 379 | disable_interrupts(); |
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| 380 | |
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| 381 | // context switch to specified coroutine |
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| 382 | assert( src->stack.context ); |
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| 383 | CtxSwitch( src->stack.context, dst->stack.context ); |
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| 384 | // when CtxSwitch returns we are back in the src coroutine |
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| 385 | |
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| 386 | // set state of new coroutine to active |
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| 387 | src->state = Active; |
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| 388 | |
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[14a61b5] | 389 | verify( ! kernelTLS.preemption_state.enabled ); |
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[b69ea6b] | 390 | } |
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| 391 | |
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[8def349] | 392 | //----------------------------------------------------------------------------- |
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| 393 | // Scheduler routines |
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[14a61b5] | 394 | |
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| 395 | // KERNEL ONLY |
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[348006f] | 396 | void ScheduleThread( thread_desc * thrd ) { |
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[135b431] | 397 | verify( thrd ); |
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[b18830e] | 398 | verify( thrd->self_cor.state != Halted ); |
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[1c273d0] | 399 | |
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[14a61b5] | 400 | verify( ! kernelTLS.preemption_state.enabled ); |
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[690f13c] | 401 | |
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[4aa2fb2] | 402 | verifyf( thrd->next == NULL, "Expected null got %p", thrd->next ); |
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[1c273d0] | 403 | |
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[de6319f] | 404 | with( *thrd->curr_cluster ) { |
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[65deb18] | 405 | lock ( ready_queue_lock __cfaabi_dbg_ctx2 ); |
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[6b4cdd3] | 406 | bool was_empty = !(ready_queue != 0); |
---|
[65deb18] | 407 | append( ready_queue, thrd ); |
---|
| 408 | unlock( ready_queue_lock ); |
---|
[6b4cdd3] | 409 | |
---|
| 410 | if( was_empty ) { |
---|
| 411 | lock (proc_list_lock __cfaabi_dbg_ctx2); |
---|
| 412 | if(idles) { |
---|
| 413 | wake(idles.head); |
---|
| 414 | } |
---|
| 415 | unlock (proc_list_lock); |
---|
| 416 | } |
---|
[65deb18] | 417 | } |
---|
[1c273d0] | 418 | |
---|
[14a61b5] | 419 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[db6f06a] | 420 | } |
---|
| 421 | |
---|
[14a61b5] | 422 | // KERNEL ONLY |
---|
[65deb18] | 423 | thread_desc * nextThread(cluster * this) with( *this ) { |
---|
[14a61b5] | 424 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[65deb18] | 425 | lock( ready_queue_lock __cfaabi_dbg_ctx2 ); |
---|
| 426 | thread_desc * head = pop_head( ready_queue ); |
---|
| 427 | unlock( ready_queue_lock ); |
---|
[14a61b5] | 428 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[db6f06a] | 429 | return head; |
---|
[eb2e723] | 430 | } |
---|
| 431 | |
---|
[82ff5845] | 432 | void BlockInternal() { |
---|
| 433 | disable_interrupts(); |
---|
[14a61b5] | 434 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[82c948c] | 435 | returnToKernel(); |
---|
[14a61b5] | 436 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[36982fc] | 437 | enable_interrupts( __cfaabi_dbg_ctx ); |
---|
[75f3522] | 438 | } |
---|
| 439 | |
---|
[ea7d2b0] | 440 | void BlockInternal( __spinlock_t * lock ) { |
---|
[82ff5845] | 441 | disable_interrupts(); |
---|
[14a61b5] | 442 | with( *kernelTLS.this_processor ) { |
---|
[de6319f] | 443 | finish.action_code = Release; |
---|
| 444 | finish.lock = lock; |
---|
| 445 | } |
---|
[0b33412] | 446 | |
---|
[afd550c] | 447 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[82c948c] | 448 | returnToKernel(); |
---|
[afd550c] | 449 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[0b33412] | 450 | |
---|
[36982fc] | 451 | enable_interrupts( __cfaabi_dbg_ctx ); |
---|
[db6f06a] | 452 | } |
---|
| 453 | |
---|
[82ff5845] | 454 | void BlockInternal( thread_desc * thrd ) { |
---|
| 455 | disable_interrupts(); |
---|
[14a61b5] | 456 | with( * kernelTLS.this_processor ) { |
---|
[de6319f] | 457 | finish.action_code = Schedule; |
---|
| 458 | finish.thrd = thrd; |
---|
| 459 | } |
---|
[0b33412] | 460 | |
---|
[14a61b5] | 461 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[82c948c] | 462 | returnToKernel(); |
---|
[14a61b5] | 463 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[0b33412] | 464 | |
---|
[36982fc] | 465 | enable_interrupts( __cfaabi_dbg_ctx ); |
---|
[db6f06a] | 466 | } |
---|
| 467 | |
---|
[ea7d2b0] | 468 | void BlockInternal( __spinlock_t * lock, thread_desc * thrd ) { |
---|
[97e3296] | 469 | assert(thrd); |
---|
[82ff5845] | 470 | disable_interrupts(); |
---|
[14a61b5] | 471 | with( * kernelTLS.this_processor ) { |
---|
[de6319f] | 472 | finish.action_code = Release_Schedule; |
---|
| 473 | finish.lock = lock; |
---|
| 474 | finish.thrd = thrd; |
---|
| 475 | } |
---|
[0b33412] | 476 | |
---|
[14a61b5] | 477 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[82c948c] | 478 | returnToKernel(); |
---|
[14a61b5] | 479 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[0b33412] | 480 | |
---|
[36982fc] | 481 | enable_interrupts( __cfaabi_dbg_ctx ); |
---|
[eb2e723] | 482 | } |
---|
| 483 | |
---|
[ea7d2b0] | 484 | void BlockInternal(__spinlock_t * locks [], unsigned short count) { |
---|
[82ff5845] | 485 | disable_interrupts(); |
---|
[14a61b5] | 486 | with( * kernelTLS.this_processor ) { |
---|
[de6319f] | 487 | finish.action_code = Release_Multi; |
---|
| 488 | finish.locks = locks; |
---|
| 489 | finish.lock_count = count; |
---|
| 490 | } |
---|
[0b33412] | 491 | |
---|
[14a61b5] | 492 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[82c948c] | 493 | returnToKernel(); |
---|
[14a61b5] | 494 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[0b33412] | 495 | |
---|
[36982fc] | 496 | enable_interrupts( __cfaabi_dbg_ctx ); |
---|
[0c78741] | 497 | } |
---|
| 498 | |
---|
[ea7d2b0] | 499 | void BlockInternal(__spinlock_t * locks [], unsigned short lock_count, thread_desc * thrds [], unsigned short thrd_count) { |
---|
[82ff5845] | 500 | disable_interrupts(); |
---|
[14a61b5] | 501 | with( *kernelTLS.this_processor ) { |
---|
[de6319f] | 502 | finish.action_code = Release_Multi_Schedule; |
---|
| 503 | finish.locks = locks; |
---|
| 504 | finish.lock_count = lock_count; |
---|
| 505 | finish.thrds = thrds; |
---|
| 506 | finish.thrd_count = thrd_count; |
---|
| 507 | } |
---|
[0b33412] | 508 | |
---|
[14a61b5] | 509 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[82c948c] | 510 | returnToKernel(); |
---|
[14a61b5] | 511 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[0b33412] | 512 | |
---|
[36982fc] | 513 | enable_interrupts( __cfaabi_dbg_ctx ); |
---|
[0c78741] | 514 | } |
---|
| 515 | |
---|
[09800e9] | 516 | void BlockInternal(__finish_callback_fptr_t callback) { |
---|
| 517 | disable_interrupts(); |
---|
| 518 | with( *kernelTLS.this_processor ) { |
---|
| 519 | finish.action_code = Callback; |
---|
| 520 | finish.callback = callback; |
---|
| 521 | } |
---|
| 522 | |
---|
| 523 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
| 524 | returnToKernel(); |
---|
| 525 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
| 526 | |
---|
| 527 | enable_interrupts( __cfaabi_dbg_ctx ); |
---|
| 528 | } |
---|
| 529 | |
---|
[14a61b5] | 530 | // KERNEL ONLY |
---|
[ea7d2b0] | 531 | void LeaveThread(__spinlock_t * lock, thread_desc * thrd) { |
---|
[14a61b5] | 532 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
| 533 | with( * kernelTLS.this_processor ) { |
---|
[de6319f] | 534 | finish.action_code = thrd ? Release_Schedule : Release; |
---|
| 535 | finish.lock = lock; |
---|
| 536 | finish.thrd = thrd; |
---|
| 537 | } |
---|
[f2b12406] | 538 | |
---|
[82c948c] | 539 | returnToKernel(); |
---|
[f2b12406] | 540 | } |
---|
| 541 | |
---|
[fa21ac9] | 542 | //============================================================================================= |
---|
| 543 | // Kernel Setup logic |
---|
| 544 | //============================================================================================= |
---|
[eb2e723] | 545 | //----------------------------------------------------------------------------- |
---|
| 546 | // Kernel boot procedures |
---|
| 547 | void kernel_startup(void) { |
---|
[14a61b5] | 548 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[36982fc] | 549 | __cfaabi_dbg_print_safe("Kernel : Starting\n"); |
---|
[eb2e723] | 550 | |
---|
[ea8b2f7] | 551 | __cfa_dbg_global_clusters.list{ __get }; |
---|
| 552 | __cfa_dbg_global_clusters.lock{}; |
---|
[de94a60] | 553 | |
---|
[de6319f] | 554 | // Initialize the main cluster |
---|
| 555 | mainCluster = (cluster *)&storage_mainCluster; |
---|
| 556 | (*mainCluster){"Main Cluster"}; |
---|
| 557 | |
---|
| 558 | __cfaabi_dbg_print_safe("Kernel : Main cluster ready\n"); |
---|
| 559 | |
---|
[eb2e723] | 560 | // Start by initializing the main thread |
---|
[1c273d0] | 561 | // SKULLDUGGERY: the mainThread steals the process main thread |
---|
[969b3fe] | 562 | // which will then be scheduled by the mainProcessor normally |
---|
| 563 | mainThread = (thread_desc *)&storage_mainThread; |
---|
[8fcbb4c] | 564 | current_stack_info_t info; |
---|
[83a071f9] | 565 | (*mainThread){ &info }; |
---|
[eb2e723] | 566 | |
---|
[36982fc] | 567 | __cfaabi_dbg_print_safe("Kernel : Main thread ready\n"); |
---|
[fa21ac9] | 568 | |
---|
[bd98b58] | 569 | |
---|
[de6319f] | 570 | |
---|
| 571 | // Construct the processor context of the main processor |
---|
| 572 | void ?{}(processorCtx_t & this, processor * proc) { |
---|
| 573 | (this.__cor){ "Processor" }; |
---|
| 574 | this.__cor.starter = NULL; |
---|
| 575 | this.proc = proc; |
---|
| 576 | } |
---|
| 577 | |
---|
| 578 | void ?{}(processor & this) with( this ) { |
---|
| 579 | name = "Main Processor"; |
---|
| 580 | cltr = mainCluster; |
---|
| 581 | terminated{ 0 }; |
---|
| 582 | do_terminate = false; |
---|
| 583 | preemption_alarm = NULL; |
---|
| 584 | pending_preemption = false; |
---|
| 585 | kernel_thread = pthread_self(); |
---|
| 586 | |
---|
| 587 | runner{ &this }; |
---|
| 588 | __cfaabi_dbg_print_safe("Kernel : constructed main processor context %p\n", &runner); |
---|
| 589 | } |
---|
[fa21ac9] | 590 | |
---|
[969b3fe] | 591 | // Initialize the main processor and the main processor ctx |
---|
[eb2e723] | 592 | // (the coroutine that contains the processing control flow) |
---|
[969b3fe] | 593 | mainProcessor = (processor *)&storage_mainProcessor; |
---|
[de6319f] | 594 | (*mainProcessor){}; |
---|
[eb2e723] | 595 | |
---|
[dcb42b8] | 596 | //initialize the global state variables |
---|
[14a61b5] | 597 | kernelTLS.this_processor = mainProcessor; |
---|
| 598 | kernelTLS.this_thread = mainThread; |
---|
| 599 | kernelTLS.this_coroutine = &mainThread->self_cor; |
---|
[eb2e723] | 600 | |
---|
[82ff5845] | 601 | // Enable preemption |
---|
| 602 | kernel_start_preemption(); |
---|
| 603 | |
---|
[969b3fe] | 604 | // Add the main thread to the ready queue |
---|
| 605 | // once resume is called on mainProcessor->runner the mainThread needs to be scheduled like any normal thread |
---|
| 606 | ScheduleThread(mainThread); |
---|
| 607 | |
---|
| 608 | // SKULLDUGGERY: Force a context switch to the main processor to set the main thread's context to the current UNIX |
---|
[dcb42b8] | 609 | // context. Hence, the main thread does not begin through CtxInvokeThread, like all other threads. The trick here is that |
---|
[1c273d0] | 610 | // mainThread is on the ready queue when this call is made. |
---|
[14a61b5] | 611 | kernel_first_resume( kernelTLS.this_processor ); |
---|
[eb2e723] | 612 | |
---|
[dcb42b8] | 613 | |
---|
| 614 | |
---|
| 615 | // THE SYSTEM IS NOW COMPLETELY RUNNING |
---|
[36982fc] | 616 | __cfaabi_dbg_print_safe("Kernel : Started\n--------------------------------------------------\n\n"); |
---|
[82ff5845] | 617 | |
---|
[14a61b5] | 618 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[36982fc] | 619 | enable_interrupts( __cfaabi_dbg_ctx ); |
---|
[afd550c] | 620 | verify( TL_GET( preemption_state.enabled ) ); |
---|
[eb2e723] | 621 | } |
---|
| 622 | |
---|
[dcb42b8] | 623 | void kernel_shutdown(void) { |
---|
[36982fc] | 624 | __cfaabi_dbg_print_safe("\n--------------------------------------------------\nKernel : Shutting down\n"); |
---|
[eb2e723] | 625 | |
---|
[afd550c] | 626 | verify( TL_GET( preemption_state.enabled ) ); |
---|
[4e6fb8e] | 627 | disable_interrupts(); |
---|
[14a61b5] | 628 | verify( ! kernelTLS.preemption_state.enabled ); |
---|
[4e6fb8e] | 629 | |
---|
[969b3fe] | 630 | // SKULLDUGGERY: Notify the mainProcessor it needs to terminates. |
---|
[dcb42b8] | 631 | // When its coroutine terminates, it return control to the mainThread |
---|
| 632 | // which is currently here |
---|
[ea8b2f7] | 633 | __atomic_store_n(&mainProcessor->do_terminate, true, __ATOMIC_RELEASE); |
---|
[82c948c] | 634 | returnToKernel(); |
---|
[ea8b2f7] | 635 | mainThread->self_cor.state = Halted; |
---|
[eb2e723] | 636 | |
---|
[dcb42b8] | 637 | // THE SYSTEM IS NOW COMPLETELY STOPPED |
---|
[eb2e723] | 638 | |
---|
[82ff5845] | 639 | // Disable preemption |
---|
| 640 | kernel_stop_preemption(); |
---|
| 641 | |
---|
[969b3fe] | 642 | // Destroy the main processor and its context in reverse order of construction |
---|
[dcb42b8] | 643 | // These were manually constructed so we need manually destroy them |
---|
[094476d] | 644 | ^(mainProcessor->runner){}; |
---|
[969b3fe] | 645 | ^(mainProcessor){}; |
---|
[eb2e723] | 646 | |
---|
[dcb42b8] | 647 | // Final step, destroy the main thread since it is no longer needed |
---|
| 648 | // Since we provided a stack to this taxk it will not destroy anything |
---|
[eb2e723] | 649 | ^(mainThread){}; |
---|
| 650 | |
---|
[ea8b2f7] | 651 | ^(__cfa_dbg_global_clusters.list){}; |
---|
| 652 | ^(__cfa_dbg_global_clusters.lock){}; |
---|
[a1a17a74] | 653 | |
---|
[36982fc] | 654 | __cfaabi_dbg_print_safe("Kernel : Shutdown complete\n"); |
---|
[9d944b2] | 655 | } |
---|
| 656 | |
---|
[14a61b5] | 657 | //============================================================================================= |
---|
| 658 | // Kernel Quiescing |
---|
| 659 | //============================================================================================= |
---|
| 660 | |
---|
[6b4cdd3] | 661 | void halt(processor * this) with( *this ) { |
---|
[ea8b2f7] | 662 | verify( ! __atomic_load_n(&do_terminate, __ATOMIC_SEQ_CST) ); |
---|
| 663 | |
---|
[6b4cdd3] | 664 | with( *cltr ) { |
---|
| 665 | lock (proc_list_lock __cfaabi_dbg_ctx2); |
---|
| 666 | remove (procs, *this); |
---|
| 667 | push_front(idles, *this); |
---|
| 668 | unlock (proc_list_lock); |
---|
| 669 | } |
---|
[14a61b5] | 670 | |
---|
[6b4cdd3] | 671 | __cfaabi_dbg_print_safe("Kernel : Processor %p ready to sleep\n", this); |
---|
[14a61b5] | 672 | |
---|
[ea8b2f7] | 673 | // #ifdef __CFA_WITH_VERIFY__ |
---|
| 674 | // int sval = 0; |
---|
| 675 | // sem_getvalue(&this->idleLock, &sval); |
---|
| 676 | // verifyf(sval < 200, "Binary semaphore reached value %d : \n", sval); |
---|
| 677 | // #endif |
---|
| 678 | |
---|
| 679 | verify( ! __atomic_load_n(&do_terminate, __ATOMIC_SEQ_CST) ); |
---|
[5510027] | 680 | int __attribute__((unused)) ret = sem_wait(&idleLock); |
---|
[ea8b2f7] | 681 | // verifyf(ret >= 0 || errno == EINTR, "Sem_wait returned %d (errno %d : %s\n", ret, errno, strerror(errno)); |
---|
| 682 | |
---|
| 683 | // wait( idleLock ); |
---|
[14a61b5] | 684 | |
---|
[6b4cdd3] | 685 | __cfaabi_dbg_print_safe("Kernel : Processor %p woke up and ready to run\n", this); |
---|
[14a61b5] | 686 | |
---|
[6b4cdd3] | 687 | with( *cltr ) { |
---|
| 688 | lock (proc_list_lock __cfaabi_dbg_ctx2); |
---|
| 689 | remove (idles, *this); |
---|
| 690 | push_front(procs, *this); |
---|
| 691 | unlock (proc_list_lock); |
---|
| 692 | } |
---|
| 693 | } |
---|
| 694 | |
---|
| 695 | void wake(processor * this) { |
---|
| 696 | __cfaabi_dbg_print_safe("Kernel : Waking up processor %p\n", this); |
---|
[5510027] | 697 | int __attribute__((unused)) ret = sem_post(&this->idleLock); |
---|
[ea8b2f7] | 698 | // verifyf(ret >= 0 || errno == EINTR, "Sem_post returned %d (errno %d : %s\n", ret, errno, strerror(errno)); |
---|
| 699 | |
---|
| 700 | // #ifdef __CFA_WITH_VERIFY__ |
---|
| 701 | // int sval = 0; |
---|
| 702 | // sem_getvalue(&this->idleLock, &sval); |
---|
| 703 | // verifyf(sval < 200, "Binary semaphore reached value %d\n", sval); |
---|
| 704 | // #endif |
---|
| 705 | |
---|
| 706 | // post( this->idleLock ); |
---|
[6b4cdd3] | 707 | } |
---|
[14a61b5] | 708 | |
---|
[dbe9b08] | 709 | //============================================================================================= |
---|
| 710 | // Unexpected Terminating logic |
---|
| 711 | //============================================================================================= |
---|
| 712 | |
---|
| 713 | |
---|
[ea7d2b0] | 714 | static __spinlock_t kernel_abort_lock; |
---|
[9d944b2] | 715 | static bool kernel_abort_called = false; |
---|
| 716 | |
---|
[afd550c] | 717 | void * kernel_abort(void) __attribute__ ((__nothrow__)) { |
---|
[9d944b2] | 718 | // abort cannot be recursively entered by the same or different processors because all signal handlers return when |
---|
| 719 | // the globalAbort flag is true. |
---|
[36982fc] | 720 | lock( kernel_abort_lock __cfaabi_dbg_ctx2 ); |
---|
[9d944b2] | 721 | |
---|
| 722 | // first task to abort ? |
---|
[de94a60] | 723 | if ( kernel_abort_called ) { // not first task to abort ? |
---|
[ea7d2b0] | 724 | unlock( kernel_abort_lock ); |
---|
[1c273d0] | 725 | |
---|
[9d944b2] | 726 | sigset_t mask; |
---|
| 727 | sigemptyset( &mask ); |
---|
[de94a60] | 728 | sigaddset( &mask, SIGALRM ); // block SIGALRM signals |
---|
| 729 | sigsuspend( &mask ); // block the processor to prevent further damage during abort |
---|
| 730 | _exit( EXIT_FAILURE ); // if processor unblocks before it is killed, terminate it |
---|
| 731 | } |
---|
| 732 | else { |
---|
| 733 | kernel_abort_called = true; |
---|
| 734 | unlock( kernel_abort_lock ); |
---|
[9d944b2] | 735 | } |
---|
| 736 | |
---|
[14a61b5] | 737 | return kernelTLS.this_thread; |
---|
[9d944b2] | 738 | } |
---|
| 739 | |
---|
| 740 | void kernel_abort_msg( void * kernel_data, char * abort_text, int abort_text_size ) { |
---|
| 741 | thread_desc * thrd = kernel_data; |
---|
| 742 | |
---|
[de94a60] | 743 | if(thrd) { |
---|
| 744 | int len = snprintf( abort_text, abort_text_size, "Error occurred while executing thread %.256s (%p)", thrd->self_cor.name, thrd ); |
---|
[36982fc] | 745 | __cfaabi_dbg_bits_write( abort_text, len ); |
---|
[de94a60] | 746 | |
---|
| 747 | if ( get_coroutine(thrd) != kernelTLS.this_coroutine ) { |
---|
| 748 | len = snprintf( abort_text, abort_text_size, " in coroutine %.256s (%p).\n", kernelTLS.this_coroutine->name, kernelTLS.this_coroutine ); |
---|
| 749 | __cfaabi_dbg_bits_write( abort_text, len ); |
---|
| 750 | } |
---|
| 751 | else { |
---|
| 752 | __cfaabi_dbg_bits_write( ".\n", 2 ); |
---|
| 753 | } |
---|
[1c273d0] | 754 | } |
---|
[9d944b2] | 755 | else { |
---|
[de94a60] | 756 | int len = snprintf( abort_text, abort_text_size, "Error occurred outside of any thread.\n" ); |
---|
[639991a] | 757 | __cfaabi_dbg_bits_write( abort_text, len ); |
---|
[9d944b2] | 758 | } |
---|
| 759 | } |
---|
| 760 | |
---|
[2b8bc41] | 761 | int kernel_abort_lastframe( void ) __attribute__ ((__nothrow__)) { |
---|
[14a61b5] | 762 | return get_coroutine(kernelTLS.this_thread) == get_coroutine(mainThread) ? 4 : 2; |
---|
[2b8bc41] | 763 | } |
---|
| 764 | |
---|
[de94a60] | 765 | static __spinlock_t kernel_debug_lock; |
---|
| 766 | |
---|
[9d944b2] | 767 | extern "C" { |
---|
[36982fc] | 768 | void __cfaabi_dbg_bits_acquire() { |
---|
| 769 | lock( kernel_debug_lock __cfaabi_dbg_ctx2 ); |
---|
[9d944b2] | 770 | } |
---|
| 771 | |
---|
[36982fc] | 772 | void __cfaabi_dbg_bits_release() { |
---|
[ea7d2b0] | 773 | unlock( kernel_debug_lock ); |
---|
[9d944b2] | 774 | } |
---|
[8118303] | 775 | } |
---|
| 776 | |
---|
[fa21ac9] | 777 | //============================================================================================= |
---|
| 778 | // Kernel Utilities |
---|
| 779 | //============================================================================================= |
---|
[bd98b58] | 780 | //----------------------------------------------------------------------------- |
---|
| 781 | // Locks |
---|
[242a902] | 782 | void ?{}( semaphore & this, int count = 1 ) { |
---|
| 783 | (this.lock){}; |
---|
| 784 | this.count = count; |
---|
| 785 | (this.waiting){}; |
---|
[db6f06a] | 786 | } |
---|
[242a902] | 787 | void ^?{}(semaphore & this) {} |
---|
[db6f06a] | 788 | |
---|
[65deb18] | 789 | void P(semaphore & this) with( this ){ |
---|
| 790 | lock( lock __cfaabi_dbg_ctx2 ); |
---|
| 791 | count -= 1; |
---|
| 792 | if ( count < 0 ) { |
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[bdeba0b] | 793 | // queue current task |
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[14a61b5] | 794 | append( waiting, kernelTLS.this_thread ); |
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[bdeba0b] | 795 | |
---|
| 796 | // atomically release spin lock and block |
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[65deb18] | 797 | BlockInternal( &lock ); |
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[8def349] | 798 | } |
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[4e6fb8e] | 799 | else { |
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[65deb18] | 800 | unlock( lock ); |
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[4e6fb8e] | 801 | } |
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[bd98b58] | 802 | } |
---|
| 803 | |
---|
[65deb18] | 804 | void V(semaphore & this) with( this ) { |
---|
[bdeba0b] | 805 | thread_desc * thrd = NULL; |
---|
[65deb18] | 806 | lock( lock __cfaabi_dbg_ctx2 ); |
---|
| 807 | count += 1; |
---|
| 808 | if ( count <= 0 ) { |
---|
[bdeba0b] | 809 | // remove task at head of waiting list |
---|
[65deb18] | 810 | thrd = pop_head( waiting ); |
---|
[bd98b58] | 811 | } |
---|
[bdeba0b] | 812 | |
---|
[65deb18] | 813 | unlock( lock ); |
---|
[bdeba0b] | 814 | |
---|
| 815 | // make new owner |
---|
| 816 | WakeThread( thrd ); |
---|
[bd98b58] | 817 | } |
---|
| 818 | |
---|
[f7d6bb0] | 819 | //----------------------------------------------------------------------------- |
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[de94a60] | 820 | // Global Queues |
---|
| 821 | void doregister( cluster & cltr ) { |
---|
[ea8b2f7] | 822 | lock ( __cfa_dbg_global_clusters.lock __cfaabi_dbg_ctx2); |
---|
| 823 | push_front( __cfa_dbg_global_clusters.list, cltr ); |
---|
| 824 | unlock ( __cfa_dbg_global_clusters.lock ); |
---|
[de94a60] | 825 | } |
---|
[f7d6bb0] | 826 | |
---|
[de94a60] | 827 | void unregister( cluster & cltr ) { |
---|
[ea8b2f7] | 828 | lock ( __cfa_dbg_global_clusters.lock __cfaabi_dbg_ctx2); |
---|
| 829 | remove( __cfa_dbg_global_clusters.list, cltr ); |
---|
| 830 | unlock( __cfa_dbg_global_clusters.lock ); |
---|
[de94a60] | 831 | } |
---|
[f7d6bb0] | 832 | |
---|
[a1a17a74] | 833 | void doregister( cluster * cltr, thread_desc & thrd ) { |
---|
| 834 | lock (cltr->thread_list_lock __cfaabi_dbg_ctx2); |
---|
| 835 | push_front(cltr->threads, thrd); |
---|
| 836 | unlock (cltr->thread_list_lock); |
---|
| 837 | } |
---|
| 838 | |
---|
| 839 | void unregister( cluster * cltr, thread_desc & thrd ) { |
---|
| 840 | lock (cltr->thread_list_lock __cfaabi_dbg_ctx2); |
---|
| 841 | remove(cltr->threads, thrd ); |
---|
| 842 | unlock(cltr->thread_list_lock); |
---|
| 843 | } |
---|
[9181f1d] | 844 | |
---|
[de94a60] | 845 | void doregister( cluster * cltr, processor * proc ) { |
---|
[639991a] | 846 | lock (cltr->proc_list_lock __cfaabi_dbg_ctx2); |
---|
| 847 | push_front(cltr->procs, *proc); |
---|
| 848 | unlock (cltr->proc_list_lock); |
---|
[de94a60] | 849 | } |
---|
| 850 | |
---|
| 851 | void unregister( cluster * cltr, processor * proc ) { |
---|
[639991a] | 852 | lock (cltr->proc_list_lock __cfaabi_dbg_ctx2); |
---|
| 853 | remove(cltr->procs, *proc ); |
---|
| 854 | unlock(cltr->proc_list_lock); |
---|
[de94a60] | 855 | } |
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| 856 | |
---|
| 857 | //----------------------------------------------------------------------------- |
---|
| 858 | // Debug |
---|
| 859 | __cfaabi_dbg_debug_do( |
---|
[9181f1d] | 860 | void __cfaabi_dbg_record(__spinlock_t & this, const char * prev_name) { |
---|
| 861 | this.prev_name = prev_name; |
---|
[14a61b5] | 862 | this.prev_thrd = kernelTLS.this_thread; |
---|
[9181f1d] | 863 | } |
---|
[f7d6bb0] | 864 | ) |
---|
[8118303] | 865 | // Local Variables: // |
---|
| 866 | // mode: c // |
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| 867 | // tab-width: 4 // |
---|
| 868 | // End: // |
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