The Tor Browser: nsprpub/pr/include/md/

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

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef nspr_openbsd_defs_h___

     7 #define nspr_openbsd_defs_h___

     9 #include <sys/syscall.h>

    11 #define PR_LINKER_ARCH	"openbsd"

    12 #define _PR_SI_SYSNAME  "OPENBSD"

    13 #if defined(__i386__)

    14 #define _PR_SI_ARCHITECTURE "x86"

    15 #elif defined(__alpha__)

    16 #define _PR_SI_ARCHITECTURE "alpha"

    17 #elif defined(__amd64__)

    18 #define _PR_SI_ARCHITECTURE "amd64"

    19 #elif defined(__m68k__)

    20 #define _PR_SI_ARCHITECTURE "m68k"

    21 #elif defined(__powerpc__)

    22 #define _PR_SI_ARCHITECTURE "powerpc"

    23 #elif defined(__sparc__)

    24 #define _PR_SI_ARCHITECTURE "sparc"

    25 #elif defined(__arm__)

    26 #define _PR_SI_ARCHITECTURE "arm"

    27 #endif

    29 #define PR_DLL_SUFFIX		".so"

    31 #define _PR_VMBASE              0x30000000

    32 #define _PR_STACK_VMBASE	0x50000000

    33 #define _MD_DEFAULT_STACK_SIZE	65536L

    34 #define _MD_MMAP_FLAGS          MAP_PRIVATE

    36 #undef  HAVE_STACK_GROWING_UP

    37 #define HAVE_DLL

    38 #define USE_DLFCN

    39 #define _PR_HAVE_SOCKADDR_LEN

    40 #define _PR_HAVE_LARGE_OFF_T

    41 #define _PR_STAT_HAS_ST_ATIMESPEC

    42 #define _PR_POLL_AVAILABLE

    43 #define _PR_USE_POLL

    44 #define _PR_HAVE_SYSV_SEMAPHORES

    45 #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY

    47 #define _PR_INET6

    48 #define _PR_HAVE_INET_NTOP

    49 #define _PR_HAVE_GETHOSTBYNAME2

    50 #define _PR_HAVE_GETADDRINFO

    51 #define _PR_INET6_PROBE

    53 #define USE_SETJMP

    55 #ifndef _PR_PTHREADS

    56 #include <setjmp.h>

    58 #define PR_CONTEXT_TYPE	sigjmp_buf

    60 #define CONTEXT(_th) ((_th)->md.context)

    62 #if defined(__i386__) || defined(__sparc__) || defined(__m68k__)

    63 #define JB_SP_INDEX 2

    64 #elif defined(__powerpc__)

    65 #define JB_SP_INDEX 1

    66 #elif defined(__alpha__)

    67 #define JB_SP_INDEX 34

    68 #elif defined(__amd64__)

    69 #define JB_SP_INDEX 6

    70 #elif defined(__arm__)

    71 #define JB_SP_INDEX 23

    72 #else

    73 #error "Need to define SP index in jmp_buf here"

    74 #endif

    75 #define _MD_GET_SP(_th)    (_th)->md.context[JB_SP_INDEX]

    77 #define PR_NUM_GCREGS	_JBLEN

    79 /*

    80 ** Initialize a thread context to run "_main()" when started

    81 */

    82 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \

    83 {  \

    84     *status = PR_TRUE;  \

    85     if (sigsetjmp(CONTEXT(_thread), 1)) {  \

    86         _main();  \

    87     }  \

    88     _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \

    89 }

    91 #define _MD_SWITCH_CONTEXT(_thread)  \

    92     if (!sigsetjmp(CONTEXT(_thread), 1)) {  \

    93         (_thread)->md.errcode = errno;  \

    94         _PR_Schedule();  \

    95     }

    97 /*

    98 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT

    99 */

   100 #define _MD_RESTORE_CONTEXT(_thread) \

   101 {   \

   102     errno = (_thread)->md.errcode;  \

   103     _MD_SET_CURRENT_THREAD(_thread);  \

   104     siglongjmp(CONTEXT(_thread), 1);  \

   105 }

   107 /* Machine-dependent (MD) data structures */

   109 struct _MDThread {

   110     PR_CONTEXT_TYPE context;

   111     int id;

   112     int errcode;

   113 };

   115 struct _MDThreadStack {

   116     PRInt8 notused;

   117 };

   119 struct _MDLock {

   120     PRInt8 notused;

   121 };

   123 struct _MDSemaphore {

   124     PRInt8 notused;

   125 };

   127 struct _MDCVar {

   128     PRInt8 notused;

   129 };

   131 struct _MDSegment {

   132     PRInt8 notused;

   133 };

   135 /*

   136  * md-specific cpu structure field

   137  */

   138 #define _PR_MD_MAX_OSFD FD_SETSIZE

   140 struct _MDCPU_Unix {

   141     PRCList ioQ;

   142     PRUint32 ioq_timeout;

   143     PRInt32 ioq_max_osfd;

   144     PRInt32 ioq_osfd_cnt;

   145 #ifndef _PR_USE_POLL

   146     fd_set fd_read_set, fd_write_set, fd_exception_set;

   147     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],

   148 				fd_exception_cnt[_PR_MD_MAX_OSFD];

   149 #else

   150 	struct pollfd *ioq_pollfds;

   151 	int ioq_pollfds_size;

   152 #endif	/* _PR_USE_POLL */

   153 };

   155 #define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)

   156 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))

   157 #define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)

   158 #define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)

   159 #define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)

   160 #define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)

   161 #define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)

   162 #define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)

   163 #define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)

   164 #define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)

   165 #define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)

   166 #define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)

   167 #define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)

   169 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32

   171 struct _MDCPU {

   172     struct _MDCPU_Unix md_unix;

   173 };

   175 #define _MD_INIT_LOCKS()

   176 #define _MD_NEW_LOCK(lock) PR_SUCCESS

   177 #define _MD_FREE_LOCK(lock)

   178 #define _MD_LOCK(lock)

   179 #define _MD_UNLOCK(lock)

   180 #define _MD_INIT_IO()

   181 #define _MD_IOQ_LOCK()

   182 #define _MD_IOQ_UNLOCK()

   184 #define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)

   185 #define _MD_INIT_THREAD                 _MD_InitializeThread

   186 #define _MD_EXIT_THREAD(thread)

   187 #define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread

   188 #define _MD_RESUME_THREAD(thread)       _MD_resume_thread

   189 #define _MD_CLEAN_THREAD(_thread)

   191 #endif /* ! _PR_PTHREADS */

   193 #define _MD_EARLY_INIT                  _MD_EarlyInit

   194 #define _MD_FINAL_INIT			_PR_UnixInit

   195 #define _MD_INTERVAL_USE_GTOD

   197 /*

   198  * We wrapped the select() call.  _MD_SELECT refers to the built-in,

   199  * unwrapped version.

   200  */

   201 #define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)

   202 #include <poll.h>

   203 #define _MD_POLL(fds,nfds,timeout) syscall(SYS_poll,fds,nfds,timeout)

   205 #if OpenBSD1_3 == 1L

   206 typedef unsigned int nfds_t;

   207 #endif

   209 #endif /* nspr_openbsd_defs_h___ */

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