X-Git-Url: https://git.saurik.com/apple/libpthread.git/blobdiff_plain/a0619f9c1b0bf5530b0accb349cdfa98fa5b8c02..f5f1275602d7d7c891383036ec08c0bfc904be22:/kern/kern_internal.h?ds=sidebyside diff --git a/kern/kern_internal.h b/kern/kern_internal.h index 80533c3..fb84250 100644 --- a/kern/kern_internal.h +++ b/kern/kern_internal.h @@ -29,26 +29,24 @@ #ifndef _SYS_PTHREAD_INTERNAL_H_ #define _SYS_PTHREAD_INTERNAL_H_ +#include +#include +#include + #ifdef KERNEL +struct ksyn_waitq_element; #include #include #include #include #include #include - -#ifdef __arm64__ -#define PTHREAD_INLINE_RMW_ATOMICS 0 -#else -#define PTHREAD_INLINE_RMW_ATOMICS 1 -#endif #endif // KERNEL #include "kern/synch_internal.h" -#include "kern/workqueue_internal.h" #include "kern/kern_trace.h" #include "pthread/qos.h" -#include "private/qos_private.h" +#include "pthread/qos_private.h" /* pthread userspace SPI feature checking, these constants are returned from bsdthread_register, * as a bitmask, to inform userspace of the supported feature set. Old releases of OS X return @@ -64,101 +62,6 @@ #define PTHREAD_FEATURE_WORKLOOP 0x80 /* supports workloops */ #define PTHREAD_FEATURE_QOS_DEFAULT 0x40000000 /* the kernel supports QOS_CLASS_DEFAULT */ -/* pthread bsdthread_ctl sysctl commands */ -#define BSDTHREAD_CTL_SET_QOS 0x10 /* bsdthread_ctl(BSDTHREAD_CTL_SET_QOS, thread_port, tsd_entry_addr, 0) */ -#define BSDTHREAD_CTL_GET_QOS 0x20 /* bsdthread_ctl(BSDTHREAD_CTL_GET_QOS, thread_port, 0, 0) */ -#define BSDTHREAD_CTL_QOS_OVERRIDE_START 0x40 /* bsdthread_ctl(BSDTHREAD_CTL_QOS_OVERRIDE_START, thread_port, priority, 0) */ -#define BSDTHREAD_CTL_QOS_OVERRIDE_END 0x80 /* bsdthread_ctl(BSDTHREAD_CTL_QOS_OVERRIDE_END, thread_port, 0, 0) */ -#define BSDTHREAD_CTL_SET_SELF 0x100 /* bsdthread_ctl(BSDTHREAD_CTL_SET_SELF, priority, voucher, flags) */ -#define BSDTHREAD_CTL_QOS_OVERRIDE_RESET 0x200 /* bsdthread_ctl(BSDTHREAD_CTL_QOS_OVERRIDE_RESET, 0, 0, 0) */ -#define BSDTHREAD_CTL_QOS_OVERRIDE_DISPATCH 0x400 /* bsdthread_ctl(BSDTHREAD_CTL_QOS_OVERRIDE_DISPATCH, thread_port, priority, 0) */ -#define BSDTHREAD_CTL_QOS_DISPATCH_ASYNCHRONOUS_OVERRIDE_ADD 0x401 /* bsdthread_ctl(BSDTHREAD_CTL_QOS_DISPATCH_ASYNCHRONOUS_OVERRIDE_ADD, thread_port, priority, resource) */ -#define BSDTHREAD_CTL_QOS_DISPATCH_ASYNCHRONOUS_OVERRIDE_RESET 0x402 /* bsdthread_ctl(BSDTHREAD_CTL_QOS_DISPATCH_ASYNCHRONOUS_OVERRIDE_RESET, 0|1 (?reset_all), resource, 0) */ -#define BSDTHREAD_CTL_QOS_MAX_PARALLELISM 0x800 /* bsdthread_ctl(BSDTHREAD_CTL_QOS_MAX_PARALLELISM, priority, flags, 0) */ - -/* qos_class_t is mapped into one of these bits in the bitfield, this mapping now exists here because - * libdispatch requires the QoS class mask of the pthread_priority_t to be a bitfield. - */ -#define __PTHREAD_PRIORITY_CBIT_USER_INTERACTIVE 0x20 -#define __PTHREAD_PRIORITY_CBIT_USER_INITIATED 0x10 -#define __PTHREAD_PRIORITY_CBIT_DEFAULT 0x8 -#define __PTHREAD_PRIORITY_CBIT_UTILITY 0x4 -#define __PTHREAD_PRIORITY_CBIT_BACKGROUND 0x2 -#define __PTHREAD_PRIORITY_CBIT_MAINTENANCE 0x1 -#define __PTHREAD_PRIORITY_CBIT_UNSPECIFIED 0x0 - -static inline int -_pthread_qos_class_to_thread_qos(qos_class_t qos) -{ - switch (qos) { - case QOS_CLASS_USER_INTERACTIVE: return THREAD_QOS_USER_INTERACTIVE; - case QOS_CLASS_USER_INITIATED: return THREAD_QOS_USER_INITIATED; - case QOS_CLASS_DEFAULT: return THREAD_QOS_LEGACY; - case QOS_CLASS_UTILITY: return THREAD_QOS_UTILITY; - case QOS_CLASS_BACKGROUND: return THREAD_QOS_BACKGROUND; - case QOS_CLASS_MAINTENANCE: return THREAD_QOS_MAINTENANCE; - default: return THREAD_QOS_UNSPECIFIED; - } -} - -static inline pthread_priority_t -_pthread_priority_make_newest(qos_class_t qc, int rel, unsigned long flags) -{ - pthread_priority_t cls; - switch (qc) { - case QOS_CLASS_USER_INTERACTIVE: cls = __PTHREAD_PRIORITY_CBIT_USER_INTERACTIVE; break; - case QOS_CLASS_USER_INITIATED: cls = __PTHREAD_PRIORITY_CBIT_USER_INITIATED; break; - case QOS_CLASS_DEFAULT: cls = __PTHREAD_PRIORITY_CBIT_DEFAULT; break; - case QOS_CLASS_UTILITY: cls = __PTHREAD_PRIORITY_CBIT_UTILITY; break; - case QOS_CLASS_BACKGROUND: cls = __PTHREAD_PRIORITY_CBIT_BACKGROUND; break; - case QOS_CLASS_MAINTENANCE: cls = __PTHREAD_PRIORITY_CBIT_MAINTENANCE; break; - case QOS_CLASS_UNSPECIFIED: - default: - cls = __PTHREAD_PRIORITY_CBIT_UNSPECIFIED; - rel = 1; // results in priority bits == 0 - break; - } - - pthread_priority_t p = - (flags & _PTHREAD_PRIORITY_FLAGS_MASK) | - ((cls << _PTHREAD_PRIORITY_QOS_CLASS_SHIFT) & _PTHREAD_PRIORITY_QOS_CLASS_MASK) | - (((uint8_t)rel - 1) & _PTHREAD_PRIORITY_PRIORITY_MASK); - - return p; -} - -static inline qos_class_t -_pthread_priority_get_qos_newest(pthread_priority_t priority) -{ - qos_class_t qc; - switch ((priority & _PTHREAD_PRIORITY_QOS_CLASS_MASK) >> _PTHREAD_PRIORITY_QOS_CLASS_SHIFT) { - case __PTHREAD_PRIORITY_CBIT_USER_INTERACTIVE: qc = QOS_CLASS_USER_INTERACTIVE; break; - case __PTHREAD_PRIORITY_CBIT_USER_INITIATED: qc = QOS_CLASS_USER_INITIATED; break; - case __PTHREAD_PRIORITY_CBIT_DEFAULT: qc = QOS_CLASS_DEFAULT; break; - case __PTHREAD_PRIORITY_CBIT_UTILITY: qc = QOS_CLASS_UTILITY; break; - case __PTHREAD_PRIORITY_CBIT_BACKGROUND: qc = QOS_CLASS_BACKGROUND; break; - case __PTHREAD_PRIORITY_CBIT_MAINTENANCE: qc = QOS_CLASS_MAINTENANCE; break; - case __PTHREAD_PRIORITY_CBIT_UNSPECIFIED: - default: qc = QOS_CLASS_UNSPECIFIED; break; - } - return qc; -} - -#define _pthread_priority_get_relpri(priority) \ - ((int8_t)((priority & _PTHREAD_PRIORITY_PRIORITY_MASK) >> _PTHREAD_PRIORITY_PRIORITY_SHIFT) + 1) - -#define _pthread_priority_get_flags(priority) \ - (priority & _PTHREAD_PRIORITY_FLAGS_MASK) - -#define _pthread_priority_split_newest(priority, qos, relpri) \ - ({ qos = _pthread_priority_get_qos_newest(priority); \ - relpri = (qos == QOS_CLASS_UNSPECIFIED) ? 0 : \ - _pthread_priority_get_relpri(priority); \ - }) - -#define _PTHREAD_QOS_PARALLELISM_COUNT_LOGICAL 0x1 -#define _PTHREAD_QOS_PARALLELISM_REALTIME 0x2 - /* userspace <-> kernel registration struct, for passing data to/from the kext during main thread init. */ struct _pthread_registration_data { /* @@ -177,8 +80,20 @@ struct _pthread_registration_data { uint32_t tsd_offset; /* copy-in */ uint32_t return_to_kernel_offset; /* copy-in */ uint32_t mach_thread_self_offset; /* copy-in */ + mach_vm_address_t stack_addr_hint; /* copy-out */ +#define _PTHREAD_REG_DEFAULT_POLICY_MASK 0xff +#define _PTHREAD_REG_DEFAULT_USE_ULOCK 0x100 +#define _PTHREAD_REG_DEFAULT_USE_ADAPTIVE_SPIN 0x200 + uint32_t mutex_default_policy; /* copy-out */ + uint32_t joinable_offset_bits; /* copy-in */ } __attribute__ ((packed)); +/* + * "error" flags returned by fail condvar syscalls + */ +#define ECVCLEARED 0x100 +#define ECVPREPOST 0x200 + #ifdef KERNEL /* The set of features, from the feature bits above, that we support. */ @@ -197,23 +112,16 @@ extern pthread_callbacks_t pthread_kern; struct ksyn_waitq_element { TAILQ_ENTRY(ksyn_waitq_element) kwe_list; /* link to other list members */ void * kwe_kwqqueue; /* queue blocked on */ - uint32_t kwe_state; /* state */ + thread_t kwe_thread; + uint16_t kwe_state; /* state */ + uint16_t kwe_flags; uint32_t kwe_lockseq; /* the sequence of the entry */ uint32_t kwe_count; /* upper bound on number of matches still pending */ uint32_t kwe_psynchretval; /* thread retval */ void *kwe_uth; /* uthread */ - uint64_t kwe_tid; /* tid of waiter */ }; typedef struct ksyn_waitq_element * ksyn_waitq_element_t; -pthread_priority_t thread_qos_get_pthread_priority(int qos) __attribute__((const)); -int thread_qos_get_class_index(int qos) __attribute__((const)); -int pthread_priority_get_thread_qos(pthread_priority_t priority) __attribute__((const)); -int pthread_priority_get_class_index(pthread_priority_t priority) __attribute__((const)); -pthread_priority_t class_index_get_pthread_priority(int index) __attribute__((const)); -int class_index_get_thread_qos(int index) __attribute__((const)); -int qos_class_get_class_index(int qos) __attribute__((const)); - #define PTH_DEFAULT_STACKSIZE 512*1024 #define MAX_PTHREAD_SIZE 64*1024 @@ -275,31 +183,29 @@ extern thread_call_t psynch_thcall; struct uthread* current_uthread(void); -#define WORKQ_REQTHREADS_THREADREQ 0x1 -#define WORKQ_REQTHREADS_NOEMERGENCY 0x2 +int +workq_create_threadstack(proc_t p, vm_map_t vmap, mach_vm_offset_t *out_addr); -// Call for the kernel's kevent system to request threads. A list of QoS/event -// counts should be provided, sorted by flags and then QoS class. If the -// identity of the thread to handle the request is known, it will be returned. -// If a new thread must be created, NULL will be returned. -thread_t _workq_reqthreads(struct proc *p, int requests_count, - workq_reqthreads_req_t requests); +int +workq_destroy_threadstack(proc_t p, vm_map_t vmap, mach_vm_offset_t stackaddr); -// Resolve a pthread_priority_t to a QoS/relative pri -integer_t _thread_qos_from_pthread_priority(unsigned long pri, unsigned long *flags); -// Clear out extraneous flags/pri info for putting in voucher -pthread_priority_t _pthread_priority_canonicalize(pthread_priority_t pri, boolean_t for_propagation); +void +workq_setup_thread(proc_t p, thread_t th, vm_map_t map, user_addr_t stackaddr, + mach_port_name_t kport, int th_qos, int setup_flags, int upcall_flags); -boolean_t _workq_thread_has_been_unbound(thread_t th, int qos_class); +int +workq_handle_stack_events(proc_t p, thread_t th, vm_map_t map, + user_addr_t stackaddr, mach_port_name_t kport, + user_addr_t events, int nevents, int upcall_flags); -int workq_kern_threadreq(struct proc *p, workq_threadreq_t req, - enum workq_threadreq_type, unsigned long priority, int flags); - -int workq_kern_threadreq_modify(struct proc *p, workq_threadreq_t req, - enum workq_threadreq_op operation, - unsigned long arg1, unsigned long arg2); +void +workq_markfree_threadstack(proc_t p, thread_t th, vm_map_t vmap, + user_addr_t stackaddr); #endif // KERNEL +// magical `nkevents` values for _pthread_wqthread +#define WORKQ_EXIT_THREAD_NKEVENT (-1) + #endif /* _SYS_PTHREAD_INTERNAL_H_ */