nsprpub/pr/include/md/_aix.h

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  15  * The Original Code is the Netscape Portable Runtime (NSPR).
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  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #ifndef nspr_aix_defs_h___
  39 #define nspr_aix_defs_h___
  40
  41 #include <sys/types.h>
  42 #if defined(_PR_PTHREADS) || defined(PTHREADS_USER)
  43 #include <pthread.h>
  44 #endif
  45
  46 /*
  47  * To pick up fd_set and the poll events.
  48  */
  49 #include <sys/select.h>
  50 #include <sys/poll.h>
  51
  52 /*
  53  * Internal configuration macros
  54  */
  55
  56 #define PR_LINKER_ARCH          "aix"
  57 #define _PR_SI_SYSNAME              "AIX"
  58 #define _PR_SI_ARCHITECTURE         "rs6000"
  59 #define PR_DLL_SUFFIX               ".so"
  60
  61 #define _PR_VMBASE                      0x30000000
  62 #define _PR_STACK_VMBASE            0x50000000
  63 #define _MD_DEFAULT_STACK_SIZE  (2*65536L)
  64 #define _MD_MINIMUM_STACK_SIZE  (2*65536L)
  65 #define _MD_MMAP_FLAGS              MAP_PRIVATE
  66
  67 #define NEED_TIME_R
  68 #undef  HAVE_STACK_GROWING_UP
  69 #undef  HAVE_WEAK_IO_SYMBOLS
  70 #undef  HAVE_WEAK_MALLOC_SYMBOLS
  71 #define HAVE_DLL
  72 #define USE_DLFCN
  73 #define _PR_HAVE_SOCKADDR_LEN
  74 #define _PR_POLL_AVAILABLE
  75 #define _PR_USE_POLL
  76 #define _PR_STAT_HAS_ONLY_ST_ATIME
  77 #ifdef _PR_INET6
  78 #define _PR_HAVE_INET_NTOP
  79 #define _PR_HAVE_GETHOSTBYNAME2
  80 #define _PR_HAVE_GETADDRINFO
  81 #endif
  82 #define _PR_HAVE_SYSV_SEMAPHORES
  83 #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
  84 #define _PR_ACCEPT_INHERIT_NONBLOCK
  85
  86 /* Timer operations */
  87 #if defined(AIX_TIMERS)
  88 extern PRIntervalTime _MD_AixGetInterval(void);
  89 #define _MD_GET_INTERVAL _MD_AixGetInterval
  90
  91 extern PRIntervalTime _MD_AixIntervalPerSec(void);
  92 #define _MD_INTERVAL_PER_SEC _MD_AixIntervalPerSec
  93
  94 #else  /* defined(AIX_TIMERS) */
  95 #define _MD_GET_INTERVAL        _PR_UNIX_GetInterval
  96 #define _MD_INTERVAL_PER_SEC    _PR_UNIX_TicksPerSecond
  97 #endif  /* defined(AIX_TIMERS) */
  98
  99 #ifdef AIX_HAVE_ATOMIC_OP_H
 100 /* The atomic operations */
 101 #include <sys/atomic_op.h>
 102 #define _PR_HAVE_ATOMIC_OPS
 103 #ifndef IS_64
 104 #define _PR_HAVE_ATOMIC_CAS
 105 #endif
 106 #define _MD_INIT_ATOMIC()
 107 #define _MD_ATOMIC_INCREMENT(val)   ((PRInt32)fetch_and_add((atomic_p)val, 1) + 1)
 108 #define _MD_ATOMIC_ADD(ptr, val)   ((PRInt32)fetch_and_add((atomic_p)ptr, val) + val)
 109 #define _MD_ATOMIC_DECREMENT(val)   ((PRInt32)fetch_and_add((atomic_p)val, -1) - 1)
 110 #define _MD_ATOMIC_SET(val, newval) _AIX_AtomicSet(val, newval)
 111 #endif /* AIX_HAVE_ATOMIC_OP_H */
 112
 113 #define USE_SETJMP
 114
 115 #include <setjmp.h>
 116
 117 #define _MD_GET_SP(_t)                          (_t)->md.jb[3]
 118 #define _MD_SET_THR_SP(_t, _sp)         ((_t)->md.jb[3] = (int) (_sp - 2 * 64))
 119 #define PR_NUM_GCREGS                           _JBLEN
 120
 121 #define CONTEXT(_th)                            ((_th)->md.jb)
 122 #define SAVE_CONTEXT(_th)                       _setjmp(CONTEXT(_th))
 123 #define GOTO_CONTEXT(_th)                       _longjmp(CONTEXT(_th), 1)
 124
 125 #ifdef PTHREADS_USER
 126 #include "_nspr_pthread.h"
 127 #else
 128
 129 /*
 130 ** Initialize the thread context preparing it to execute _main.
 131 */
 132 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)         \
 133     PR_BEGIN_MACRO                                    \
 134         *status = PR_TRUE;              \
 135         if (setjmp(CONTEXT(_thread))) { \
 136             (*_main)();                 \
 137         }                               \
 138         _MD_GET_SP(_thread) = (int) (_sp - 2 * 64);             \
 139     PR_END_MACRO
 140
 141 #define _MD_SWITCH_CONTEXT(_thread)  \
 142     if (!setjmp(CONTEXT(_thread))) { \
 143         (_thread)->md.errcode = errno;  \
 144         _PR_Schedule();              \
 145     }
 146
 147 /*
 148 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
 149 */
 150 #define _MD_RESTORE_CONTEXT(_thread) \
 151 {                                    \
 152     errno = (_thread)->md.errcode; \
 153     _MD_SET_CURRENT_THREAD(_thread); \
 154     longjmp(CONTEXT(_thread), 1); \
 155 }
 156
 157 /* Machine-dependent (MD) data structures */
 158
 159 struct _MDThread {
 160     jmp_buf jb;
 161     int id;
 162     int errcode;
 163 };
 164
 165 struct _MDThreadStack {
 166     PRInt8 notused;
 167 };
 168
 169 struct _MDLock {
 170     PRInt8 notused;
 171 };
 172
 173 struct _MDSemaphore {
 174     PRInt8 notused;
 175 };
 176
 177 struct _MDCVar {
 178     PRInt8 notused;
 179 };
 180
 181 struct _MDSegment {
 182     PRInt8 notused;
 183 };
 184
 185 /*
 186  * md-specific cpu structure field
 187  */
 188 #define _PR_MD_MAX_OSFD FD_SETSIZE
 189
 190 struct _MDCPU_Unix {
 191     PRCList ioQ;
 192     PRUint32 ioq_timeout;
 193     PRInt32 ioq_max_osfd;
 194     PRInt32 ioq_osfd_cnt;
 195 #ifndef _PR_USE_POLL
 196     fd_set fd_read_set, fd_write_set, fd_exception_set;
 197     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
 198                                 fd_exception_cnt[_PR_MD_MAX_OSFD];
 199 #else
 200         struct pollfd *ioq_pollfds;
 201         int ioq_pollfds_size;
 202 #endif  /* _PR_USE_POLL */
 203 };
 204
 205 #define _PR_IOQ(_cpu)                   ((_cpu)->md.md_unix.ioQ)
 206 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
 207 #define _PR_FD_READ_SET(_cpu)           ((_cpu)->md.md_unix.fd_read_set)
 208 #define _PR_FD_READ_CNT(_cpu)           ((_cpu)->md.md_unix.fd_read_cnt)
 209 #define _PR_FD_WRITE_SET(_cpu)          ((_cpu)->md.md_unix.fd_write_set)
 210 #define _PR_FD_WRITE_CNT(_cpu)          ((_cpu)->md.md_unix.fd_write_cnt)
 211 #define _PR_FD_EXCEPTION_SET(_cpu)      ((_cpu)->md.md_unix.fd_exception_set)
 212 #define _PR_FD_EXCEPTION_CNT(_cpu)      ((_cpu)->md.md_unix.fd_exception_cnt)
 213 #define _PR_IOQ_TIMEOUT(_cpu)           ((_cpu)->md.md_unix.ioq_timeout)
 214 #define _PR_IOQ_MAX_OSFD(_cpu)          ((_cpu)->md.md_unix.ioq_max_osfd)
 215 #define _PR_IOQ_OSFD_CNT(_cpu)          ((_cpu)->md.md_unix.ioq_osfd_cnt)
 216 #define _PR_IOQ_POLLFDS(_cpu)           ((_cpu)->md.md_unix.ioq_pollfds)
 217 #define _PR_IOQ_POLLFDS_SIZE(_cpu)      ((_cpu)->md.md_unix.ioq_pollfds_size)
 218
 219 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)  32
 220
 221 struct _MDCPU {
 222     struct _MDCPU_Unix md_unix;
 223 };
 224
 225 #if !defined(_PR_PTHREADS)
 226 #define _MD_INIT_LOCKS()
 227 #endif
 228
 229 #define _MD_NEW_LOCK(lock) PR_SUCCESS
 230 #define _MD_FREE_LOCK(lock)
 231 #define _MD_LOCK(lock)
 232 #define _MD_UNLOCK(lock)
 233 #define _MD_INIT_IO()
 234 #define _MD_IOQ_LOCK()
 235 #define _MD_IOQ_UNLOCK()
 236
 237 #define _MD_EARLY_INIT                  _MD_EarlyInit
 238 #define _MD_FINAL_INIT                  _PR_UnixInit
 239 #define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
 240 #define _MD_INIT_THREAD                 _MD_InitializeThread
 241 #define _MD_EXIT_THREAD(thread)
 242 #define _MD_SUSPEND_THREAD(thread)
 243 #define _MD_RESUME_THREAD(thread)
 244 #define _MD_CLEAN_THREAD(_thread)
 245 #endif /* PTHREADS_USER */
 246
 247 #ifdef AIX_RENAME_SELECT
 248 #define _MD_SELECT      select
 249 #define _MD_POLL        poll
 250 #endif
 251
 252 extern void _MD_aix_map_sendfile_error(int err);
 253
 254 #endif /* nspr_aix_defs_h___ */