// // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo // // The contents of this file are covered under the licence agreement in the // file "LICENCE" distributed with Cforall. // // invoke.h -- // // Author : Thierry Delisle // Created On : Tue Jan 17 12:27:26 2016 // Last Modified By : Peter A. Buhr // Last Modified On : Sat Jun 22 18:19:13 2019 // Update Count : 40 // #include "bits/containers.hfa" #include "bits/defs.hfa" #include "bits/locks.hfa" #ifdef __cforall extern "C" { #endif #if ! defined(__CFA_INVOKE_PRIVATE__) #ifndef _INVOKE_H_ #define _INVOKE_H_ #ifdef __ARM_ARCH // function prototypes are only really used by these macros on ARM void disable_global_interrupts(); void enable_global_interrupts(); #define TL_GET( member ) ( { __typeof__( kernelTLS.member ) target; \ disable_global_interrupts(); \ target = kernelTLS.member; \ enable_global_interrupts(); \ target; } ) #define TL_SET( member, value ) disable_global_interrupts(); \ kernelTLS.member = value; \ enable_global_interrupts(); #else #define TL_GET( member ) kernelTLS.member #define TL_SET( member, value ) kernelTLS.member = value; #endif #ifdef __cforall extern "Cforall" { extern thread_local struct KernelThreadData { struct thread_desc * volatile this_thread; struct processor * volatile this_processor; struct { volatile unsigned short disable_count; volatile bool enabled; volatile bool in_progress; } preemption_state; } kernelTLS __attribute__ ((tls_model ( "initial-exec" ))); } #endif struct __stack_context_t { void * SP; void * FP; }; // low adresses : +----------------------+ <- start of allocation // | optional guard page | // +----------------------+ <- __stack_t.limit // | | // | /\ /\ /\ | // | || || || | // | | // | program stack | // | | // __stack_info_t.storage -> +----------------------+ <- __stack_t.base // | __stack_t | // high adresses : +----------------------+ <- end of allocation struct __stack_t { // stack grows towards stack limit void * limit; // base of stack void * base; }; struct __stack_info_t { // pointer to stack struct __stack_t * storage; }; enum coroutine_state { Halted, Start, Inactive, Active, Primed }; struct coroutine_desc { // context that is switch during a CtxSwitch struct __stack_context_t context; // stack information of the coroutine struct __stack_info_t stack; // textual name for coroutine/task const char * name; // current execution status for coroutine enum coroutine_state state; // first coroutine to resume this one struct coroutine_desc * starter; // last coroutine to resume this one struct coroutine_desc * last; // If non-null stack must be unwound with this exception struct _Unwind_Exception * cancellation; }; // struct which calls the monitor is accepting struct __waitfor_mask_t { // the index of the accepted function, -1 if none short * accepted; // list of acceptable functions, null if any __cfa_anonymous_object( __small_array_t(struct __acceptable_t) ); }; struct monitor_desc { // spinlock to protect internal data struct __spinlock_t lock; // current owner of the monitor struct thread_desc * owner; // queue of threads that are blocked waiting for the monitor __queue_t(struct thread_desc) entry_queue; // stack of conditions to run next once we exit the monitor __stack_t(struct __condition_criterion_t) signal_stack; // monitor routines can be called recursively, we need to keep track of that unsigned int recursion; // mask used to know if some thread is waiting for something while holding the monitor struct __waitfor_mask_t mask; // node used to signal the dtor in a waitfor dtor struct __condition_node_t * dtor_node; }; struct __monitor_group_t { // currently held monitors __cfa_anonymous_object( __small_array_t(monitor_desc*) ); // last function that acquired monitors fptr_t func; }; struct thread_desc { // Core threading fields // context that is switch during a CtxSwitch struct __stack_context_t context; // current execution status for coroutine enum coroutine_state state; //SKULLDUGGERY errno is not save in the thread data structure because returnToKernel appears to be the only function to require saving and restoring it // coroutine body used to store context struct coroutine_desc self_cor; // current active context struct coroutine_desc * curr_cor; // monitor body used for mutual exclusion struct monitor_desc self_mon; // pointer to monitor with sufficient lifetime for current monitors struct monitor_desc * self_mon_p; // pointer to the cluster on which the thread is running struct cluster * curr_cluster; // monitors currently held by this thread struct __monitor_group_t monitors; // Link lists fields // instrusive link field for threads struct thread_desc * next; struct { struct thread_desc * next; struct thread_desc * prev; } node; }; #ifdef __cforall extern "Cforall" { static inline thread_desc *& get_next( thread_desc & this ) { return this.next; } static inline [thread_desc *&, thread_desc *& ] __get( thread_desc & this ) { return this.node.[next, prev]; } static inline void ?{}(__monitor_group_t & this) { (this.data){NULL}; (this.size){0}; (this.func){NULL}; } static inline void ?{}(__monitor_group_t & this, struct monitor_desc ** data, __lock_size_t size, fptr_t func) { (this.data){data}; (this.size){size}; (this.func){func}; } static inline bool ?==?( const __monitor_group_t & lhs, const __monitor_group_t & rhs ) { if( (lhs.data != 0) != (rhs.data != 0) ) return false; if( lhs.size != rhs.size ) return false; if( lhs.func != rhs.func ) return false; // Check that all the monitors match for( int i = 0; i < lhs.size; i++ ) { // If not a match, check next function if( lhs[i] != rhs[i] ) return false; } return true; } static inline void ?=?(__monitor_group_t & lhs, const __monitor_group_t & rhs) { lhs.data = rhs.data; lhs.size = rhs.size; lhs.func = rhs.func; } } #endif #endif //_INVOKE_H_ #else //! defined(__CFA_INVOKE_PRIVATE__) #ifndef _INVOKE_PRIVATE_H_ #define _INVOKE_PRIVATE_H_ struct machine_context_t { void *SP; void *FP; void *PC; }; // assembler routines that performs the context switch extern void CtxInvokeStub( void ); extern void CtxSwitch( struct __stack_context_t * from, struct __stack_context_t * to ) asm ("CtxSwitch"); // void CtxStore ( void * this ) asm ("CtxStore"); // void CtxRet ( void * dst ) asm ("CtxRet"); #endif //_INVOKE_PRIVATE_H_ #endif //! defined(__CFA_INVOKE_PRIVATE__) #ifdef __cforall } #endif // Local Variables: // // mode: c // // tab-width: 4 // // End: //