#ifndef _SYS_PTHREAD_INTERNAL_H_
#define _SYS_PTHREAD_INTERNAL_H_
+#include <pthread/bsdthread_private.h>
+#include <pthread/priority_private.h>
+#include <pthread/workqueue_syscalls.h>
+
#ifdef KERNEL
+struct ksyn_waitq_element;
#include <stdatomic.h>
#include <kern/thread_call.h>
#include <kern/kcdata.h>
#include <sys/pthread_shims.h>
#include <sys/queue.h>
#include <sys/proc_info.h>
-
-#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
#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 <rdar://problem/16184900>
- 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 {
/*
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. */
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
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_ */
projects / apple / libpthread.git / blobdiff