The Tor Browser: nsprpub/pr/include/md/_darwin.h@44a2da4a2ab2 (annotated)

nsprpub/pr/include/md/_darwin.h@44a2da4a2ab2 (annotated)

nsprpub/pr/include/md/_darwin.h

Fri, 16 Jan 2015 04:50:19 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Fri, 16 Jan 2015 04:50:19 +0100
branch: TOR_BUG_9701
changeset 13: 44a2da4a2ab2
permissions: -rw-r--r--

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #ifndef nspr_darwin_defs_h___
 #define nspr_darwin_defs_h___
 #include "prthread.h"
 #include <libkern/OSAtomic.h>
 #include <sys/syscall.h>
 #ifdef __APPLE__
 #include <AvailabilityMacros.h>
 #include <TargetConditionals.h>
 #endif
 #define PR_LINKER_ARCH	"darwin"
 #define _PR_SI_SYSNAME  "DARWIN"
 #ifdef __i386__
 #define _PR_SI_ARCHITECTURE "x86"
 #elif defined(__x86_64__)
 #define _PR_SI_ARCHITECTURE "x86-64"
 #elif defined(__ppc__)
 #define _PR_SI_ARCHITECTURE "ppc"
 #elif defined(__arm__)
 #define _PR_SI_ARCHITECTURE "arm"
 #elif defined(__aarch64__)
 #define _PR_SI_ARCHITECTURE "aarch64"
 #else
 #error "Unknown CPU architecture"
 #endif
 #define PR_DLL_SUFFIX		".dylib"
 #define _PR_VMBASE              0x30000000
 #define _PR_STACK_VMBASE	0x50000000
 #define _MD_DEFAULT_STACK_SIZE	65536L
 #define _MD_MMAP_FLAGS          MAP_PRIVATE
 #undef  HAVE_STACK_GROWING_UP
 #define HAVE_DLL
 #if defined(__x86_64__) || TARGET_OS_IPHONE
 #define USE_DLFCN
 #else
 #define USE_MACH_DYLD
 #endif
 #define _PR_HAVE_SOCKADDR_LEN
 #define _PR_STAT_HAS_ST_ATIMESPEC
 #define _PR_HAVE_LARGE_OFF_T
 #define _PR_HAVE_SYSV_SEMAPHORES
 #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
 #define _PR_INET6
 /*
  * I'd prefer to use getipnodebyname and getipnodebyaddr but the
  * getipnodebyname(3) man page on Mac OS X 10.2 says they are not
  * thread-safe.  AI_V4MAPPED|AI_ADDRCONFIG doesn't work either.
  */
 #define _PR_HAVE_GETHOSTBYNAME2
 #define _PR_HAVE_GETADDRINFO
 /*
  * On Mac OS X 10.2, gethostbyaddr fails with h_errno=NO_RECOVERY
  * if you pass an IPv4-mapped IPv6 address to it.
  */
 #define _PR_GHBA_DISALLOW_V4MAPPED
 #ifdef __APPLE__
 #if !defined(MAC_OS_X_VERSION_10_3) || \
     MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_3
 /*
  * socket(AF_INET6) fails with EPROTONOSUPPORT on Mac OS X 10.1.
  * IPv6 under OS X 10.2 and below is not complete (see bug 222031).
  */
 #define _PR_INET6_PROBE
 #endif /* DT < 10.3 */
 #if defined(MAC_OS_X_VERSION_10_2) && \
     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_2
 /* Mac OS X 10.2 has inet_ntop and inet_pton. */
 #define _PR_HAVE_INET_NTOP
 #endif /* DT >= 10.2 */
 #endif /* __APPLE__ */
 #define _PR_IPV6_V6ONLY_PROBE
 /* The IPV6_V6ONLY socket option is not defined on Mac OS X 10.1. */
 #ifndef IPV6_V6ONLY
 #define IPV6_V6ONLY 27
 #endif
 #ifdef __ppc__
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 extern PRInt32 _PR_DarwinPPC_AtomicIncrement(PRInt32 *val);
 #define _MD_ATOMIC_INCREMENT(val)   _PR_DarwinPPC_AtomicIncrement(val)
 extern PRInt32 _PR_DarwinPPC_AtomicDecrement(PRInt32 *val);
 #define _MD_ATOMIC_DECREMENT(val)   _PR_DarwinPPC_AtomicDecrement(val)
 extern PRInt32 _PR_DarwinPPC_AtomicSet(PRInt32 *val, PRInt32 newval);
 #define _MD_ATOMIC_SET(val, newval) _PR_DarwinPPC_AtomicSet(val, newval)
 extern PRInt32 _PR_DarwinPPC_AtomicAdd(PRInt32 *ptr, PRInt32 val);
 #define _MD_ATOMIC_ADD(ptr, val)    _PR_DarwinPPC_AtomicAdd(ptr, val)
 #endif /* __ppc__ */
 #ifdef __i386__
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 extern PRInt32 _PR_Darwin_x86_AtomicIncrement(PRInt32 *val);
 #define _MD_ATOMIC_INCREMENT(val)   _PR_Darwin_x86_AtomicIncrement(val)
 extern PRInt32 _PR_Darwin_x86_AtomicDecrement(PRInt32 *val);
 #define _MD_ATOMIC_DECREMENT(val)   _PR_Darwin_x86_AtomicDecrement(val)
 extern PRInt32 _PR_Darwin_x86_AtomicSet(PRInt32 *val, PRInt32 newval);
 #define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_AtomicSet(val, newval)
 extern PRInt32 _PR_Darwin_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val);
 #define _MD_ATOMIC_ADD(ptr, val)    _PR_Darwin_x86_AtomicAdd(ptr, val)
 #endif /* __i386__ */
 #ifdef __x86_64__
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 extern PRInt32 _PR_Darwin_x86_64_AtomicIncrement(PRInt32 *val);
 #define _MD_ATOMIC_INCREMENT(val)   _PR_Darwin_x86_64_AtomicIncrement(val)
 extern PRInt32 _PR_Darwin_x86_64_AtomicDecrement(PRInt32 *val);
 #define _MD_ATOMIC_DECREMENT(val)   _PR_Darwin_x86_64_AtomicDecrement(val)
 extern PRInt32 _PR_Darwin_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval);
 #define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_64_AtomicSet(val, newval)
 extern PRInt32 _PR_Darwin_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
 #define _MD_ATOMIC_ADD(ptr, val)    _PR_Darwin_x86_64_AtomicAdd(ptr, val)
 #endif /* __x86_64__ */
 #if defined(__arm__) || defined(__aarch64__)
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 #define _MD_ATOMIC_INCREMENT(val)   OSAtomicIncrement32(val)
 #define _MD_ATOMIC_DECREMENT(val)   OSAtomicDecrement32(val)
 static inline PRInt32 _MD_ATOMIC_SET(PRInt32 *val, PRInt32 newval)
 {
     PRInt32 oldval;
     do {
         oldval = *val;
     } while (!OSAtomicCompareAndSwap32(oldval, newval, val));
     return oldval;
 }
 #define _MD_ATOMIC_ADD(ptr, val)    OSAtomicAdd32(val, ptr)
 #endif /* __arm__ || __aarch64__ */
 #define USE_SETJMP
 #if !defined(_PR_PTHREADS)
 #include <setjmp.h>
 #define PR_CONTEXT_TYPE	jmp_buf
 #define CONTEXT(_th)       ((_th)->md.context)
 #define _MD_GET_SP(_th)    (((struct sigcontext *) (_th)->md.context)->sc_onstack)
 #define PR_NUM_GCREGS	    _JBLEN
 /*
 ** Initialize a thread context to run "_main()" when started
 */
 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
 {  \
     *status = PR_TRUE;  \
     if (setjmp(CONTEXT(_thread))) {  \
         _main();  \
     }  \
     _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
 }
 #define _MD_SWITCH_CONTEXT(_thread)  \
     if (!setjmp(CONTEXT(_thread))) {  \
 	(_thread)->md.errcode = errno;  \
 	_PR_Schedule();  \
     }
 /*
 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
 */
 #define _MD_RESTORE_CONTEXT(_thread) \
 {   \
     errno = (_thread)->md.errcode;  \
     _MD_SET_CURRENT_THREAD(_thread);  \
     longjmp(CONTEXT(_thread), 1);  \
 }
 /* Machine-dependent (MD) data structures */
 struct _MDThread {
     PR_CONTEXT_TYPE context;
     int id;
     int errcode;
 };
 struct _MDThreadStack {
     PRInt8 notused;
 };
 struct _MDLock {
     PRInt8 notused;
 };
 struct _MDSemaphore {
     PRInt8 notused;
 };
 struct _MDCVar {
     PRInt8 notused;
 };
 struct _MDSegment {
     PRInt8 notused;
 };
 /*
  * md-specific cpu structure field
  */
 #define _PR_MD_MAX_OSFD FD_SETSIZE
 struct _MDCPU_Unix {
     PRCList ioQ;
     PRUint32 ioq_timeout;
     PRInt32 ioq_max_osfd;
     PRInt32 ioq_osfd_cnt;
 #ifndef _PR_USE_POLL
     fd_set fd_read_set, fd_write_set, fd_exception_set;
     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
 				fd_exception_cnt[_PR_MD_MAX_OSFD];
 #else
 	struct pollfd *ioq_pollfds;
 	int ioq_pollfds_size;
 #endif	/* _PR_USE_POLL */
 };
 #define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
 #define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
 #define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
 #define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
 #define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
 #define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
 #define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
 #define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
 #define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
 #define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
 #define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
 #define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
 struct _MDCPU {
 	struct _MDCPU_Unix md_unix;
 };
 #define _MD_INIT_LOCKS()
 #define _MD_NEW_LOCK(lock) PR_SUCCESS
 #define _MD_FREE_LOCK(lock)
 #define _MD_LOCK(lock)
 #define _MD_UNLOCK(lock)
 #define _MD_INIT_IO()
 #define _MD_IOQ_LOCK()
 #define _MD_IOQ_UNLOCK()
 extern PRStatus _MD_InitializeThread(PRThread *thread);
 #define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
 #define _MD_INIT_THREAD                 _MD_InitializeThread
 #define _MD_EXIT_THREAD(thread)
 #define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
 #define _MD_RESUME_THREAD(thread)       _MD_resume_thread
 #define _MD_CLEAN_THREAD(_thread)
 extern PRStatus _MD_CREATE_THREAD(
     PRThread *thread,
     void (*start) (void *),
     PRThreadPriority priority,
     PRThreadScope scope,
     PRThreadState state,
     PRUint32 stackSize);
 extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
 extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
 extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
 extern void _MD_YIELD(void);
 #endif /* ! _PR_PTHREADS */
 #define _MD_EARLY_INIT          _MD_EarlyInit
 #define _MD_FINAL_INIT			_PR_UnixInit
 #define _MD_INTERVAL_INIT       _PR_Mach_IntervalInit
 #define _MD_GET_INTERVAL        _PR_Mach_GetInterval
 #define _MD_INTERVAL_PER_SEC    _PR_Mach_TicksPerSecond
 extern void             _MD_EarlyInit(void);
 extern void             _PR_Mach_IntervalInit(void);
 extern PRIntervalTime   _PR_Mach_GetInterval(void);
 extern PRIntervalTime   _PR_Mach_TicksPerSecond(void);
 /*
  * We wrapped the select() call.  _MD_SELECT refers to the built-in,
  * unwrapped version.
  */
 #define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
 /* For writev() */
 #include <sys/uio.h>
 #endif /* nspr_darwin_defs_h___ */

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nsprpub/pr/include/md/_darwin.h@44a2da4a2ab2 (annotated)

nsprpub/pr/include/md/_darwin.h