* Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#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 <kern/kcdata.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"
#define PTHREAD_FEATURE_QOS_MAINTENANCE 0x10 /* is QOS_CLASS_MAINTENANCE available */
#define PTHREAD_FEATURE_RESERVED 0x20 /* burnt, shipped in OSX 10.11 & iOS 9 with partial kevent delivery support */
#define PTHREAD_FEATURE_KEVENT 0x40 /* supports direct kevent delivery */
+#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) */
-
-/* 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
-
-/* Added support for QOS_CLASS_MAINTENANCE */
-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;
-}
-
-/* Added support for QOS_CLASS_LEGACY and QOS_CLASS_INHERIT */
-static inline pthread_priority_t
-_pthread_priority_make_version2(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_UNSPECIFIED:
- default:
- cls = __PTHREAD_PRIORITY_CBIT_UNSPECIFIED;
- rel = 1; // results in priority bits == 0 <rdar://problem/16184900>
- break;
- }
-
- /*
- * __PTHREAD_PRIORITY_CBIT_MAINTENANCE was defined as the 0th bit by shifting all the
- * existing bits to the left by one. So for backward compatiblity for kernels that does
- * not support QOS_CLASS_MAINTENANCE, we have to make it up by shifting the cls bit to
- * right by one.
- */
- cls >>= 1;
-
- 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;
-}
-
-/* QOS_CLASS_MAINTENANCE is supported */
-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;
-}
-
-/* QOS_CLASS_MAINTENANCE is not supported */
-static inline qos_class_t
-_pthread_priority_get_qos_version2(pthread_priority_t priority)
-{
- qos_class_t qc;
- pthread_priority_t cls;
-
- cls = (priority & _PTHREAD_PRIORITY_QOS_CLASS_MASK) >> _PTHREAD_PRIORITY_QOS_CLASS_SHIFT;
-
- /*
- * __PTHREAD_PRIORITY_CBIT_MAINTENANCE was defined as the 0th bit by shifting all the
- * existing bits to the left by one. So for backward compatiblity for kernels that does
- * not support QOS_CLASS_MAINTENANCE, pthread_priority_make() shifted the cls bit to the
- * right by one. Therefore we have to shift it back during decoding the priority bit.
- */
- cls <<= 1;
-
- switch (cls) {
- 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_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_priority_split_version2(priority, qos, relpri) \
- ({ qos = _pthread_priority_get_qos_version2(priority); \
- relpri = (qos == QOS_CLASS_UNSPECIFIED) ? 0 : \
- _pthread_priority_get_relpri(priority); \
- })
-
-/* <rdar://problem/15969976> Required for backward compatibility on older kernels. */
-#define _pthread_priority_make_version1(qos, relpri, flags) \
- (((flags >> 15) & 0xffff0000) | \
- ((qos << 8) & 0x0000ff00) | \
- (((uint8_t)relpri - 1) & 0x000000ff))
-
/* userspace <-> kernel registration struct, for passing data to/from the kext during main thread init. */
struct _pthread_registration_data {
/*
uint64_t dispatch_queue_offset; /* copy-in */
uint64_t /* pthread_priority_t */ main_qos; /* copy-out */
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 */
+ uint32_t mutex_default_policy; /* copy-out */
} __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. */
PTHREAD_FEATURE_SETSELF | \
PTHREAD_FEATURE_QOS_MAINTENANCE | \
PTHREAD_FEATURE_QOS_DEFAULT | \
- PTHREAD_FEATURE_KEVENT )
+ PTHREAD_FEATURE_KEVENT | \
+ PTHREAD_FEATURE_WORKLOOP )
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
struct uthread* current_uthread(void);
-// 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_create_threadstack(proc_t p, vm_map_t vmap, mach_vm_offset_t *out_addr);
+
+int
+workq_destroy_threadstack(proc_t p, vm_map_t vmap, mach_vm_offset_t stackaddr);
+
+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);
+
+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);
-// 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_markfree_threadstack(proc_t p, thread_t th, vm_map_t vmap,
+ user_addr_t stackaddr);
#endif // KERNEL
projects / apple / libpthread.git / blobdiff