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Diffstat (limited to 'TAO/IIOP/lib/runtime/thread.hh')
| -rw-r--r-- | TAO/IIOP/lib/runtime/thread.hh | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/TAO/IIOP/lib/runtime/thread.hh b/TAO/IIOP/lib/runtime/thread.hh deleted file mode 100644 index 372ca7bcfe8..00000000000 --- a/TAO/IIOP/lib/runtime/thread.hh +++ /dev/null @@ -1,185 +0,0 @@ -// @(#)thread.hh 1.3 95/09/29 -// Copyright 1995 by Sun Microsystems, Inc -// All Rights Reserved -// -// THREADING: simple thread utility classes -// -// Instances of these classes are placed at the beginning of a lexical -// scope to ensure that all exits from that scope restore thread or -// synchronization state to its original values. Thread state includes -// ansynchronous cancellability, synchronization state includes locks -// that cover data structures that are shared between threads. -// -// NOTE: supports only POSIX and SVR4 threads for the moment. Win32 -// threads can be supported sometime later. -// - -#ifndef _THREAD_HH -#define _THREAD_HH - -#ifdef unix -#include <unistd.h> // may define _POSIX_THREADS -#endif // unix - -#ifdef _POSIX_THREADS -#include <pthread.h> - -// -// This ugliness is called for by OSF/1 v3.0, which defines the POSIX.1c -// symbol "_POSIX_THREADS" even though it is noncompliant. -// -// We make the assumption that PTHREAD_MUTEX_INITIALIXER is a preprocessor -// symbol, although POSIX does not require that, since since it works on -// all the POSIX.1c implementations we've seen. -// -# ifndef PTHREAD_MUTEX_INITIALIZER -# undef _POSIX_THREADS -# endif // not really POSIX.1c threads -#endif - -// -// Use native threading on Solaris 2.2 and later. -// -// XXX this is a temporary kluge; "autoconf" should kick in the -// appropriate POSIX threads emulation when it's not native. -// -#if defined (sun) && !defined (_POSIX_THREADS) && !defined (FAKE_POSIX_THREADS) -# define FAKE_POSIX_THREADS -#endif // 2.2 <= "solaris version < 2.5 - - -#ifdef FAKE_POSIX_THREADS -// -// To use SVR4 native threads, enable FAKE_POSIX_THREADS. This is -// intentionally not autoconfigured, since it's only really needed on -// Solaris versions before 2.5. POSIX threads are the way to go -// longer term, on all compliant platforms. -// -// NOTE: this is only a partial implementation !!! Enough to make -// the IIOP engine work as it's coded as of 9-Aug-95. If you start -// to use different POSIX options, these macros could stop working. -// -#define _POSIX_THREADS // only as much as is defined here! - -#include <thread.h> -#include <synch.h> - -typedef thread_t pthread_t; -typedef mutex_t pthread_mutex_t; -typedef cond_t pthread_cond_t; -typedef unsigned long pthread_attr_t; -typedef thread_key_t pthread_key_t; - - -#define PTHREAD_MUTEX_INITIALIZER DEFAULTMUTEX -#define PTHREAD_COND_INITIALIZER DEFAULTCV - -#define pthread_mutex_lock mutex_lock -#define pthread_mutex_unlock mutex_unlock -#define pthread_cond_wait cond_wait - -struct pthread_once_t { - mutex_t lock; - int called_once; -}; - -#define PTHREAD_ONCE_INIT { DEFAULTMUTEX, 0 } - -inline void -pthread_once (pthread_once_t *var, void (*fn)()) -{ - mutex_lock (&var->lock); - if (var->called_once == 0) { - (fn)(); - var->called_once = 1; - } - mutex_unlock (&var->lock); -} - -#define pthread_self thr_self - -#define pthread_key_create thr_keycreate -#define pthread_attr_init(ap) ((*ap) = 0) -#define pthread_attr_setdetachstate(ap,v) ((*ap) |= (v)) - -#define PTHREAD_CREATE_DETACHED THR_DETACHED - -inline void * -pthread_getspecific (pthread_key_t key) -{ - void *vp; - - thr_getspecific (key, &vp); - return vp; -} - -#define pthread_setspecific thr_setspecific - -inline int -pthread_create ( - pthread_t *tidp, - pthread_attr_t *attrs, - void *(func)(void *), - void *arg -) -{ - return thr_create (0, 0, func, arg, *attrs, tidp); -} - -#endif // FAKE_POSIX_THREADS - - -#ifdef _POSIX_THREADS -// -// Stick one of these at the beginning of a block that hosts a critical -// section, passing it a pointer to the lock guarding that section. The -// destructor will release it on all code paths, eliminating one class of -// common threading errors. -// -class Critical { - public: - Critical (pthread_mutex_t *l) : lock (l) - { enter (); } - - ~Critical () - { leave (); } - - void leave () - { (void) pthread_mutex_unlock (lock); } - void enter () - { (void) pthread_mutex_lock (lock); } - void pause (pthread_cond_t *condition) - { (void) pthread_cond_wait (condition, lock); } - - private: - pthread_mutex_t *lock; -}; - - -// -// Stick one of these at the beginning of a block that can't support -// asynchronous cancellation, and which must be cancel-safe. -// -class ForceSynchronousCancel { - public: - // - // MIT Pthreads 1.60 doesn't include cancellation; this is good, it - // gives time to ensure that stack unwinding for cancellation (in C) - // interoperates with unwinding for C++ exceptions so that both - // resource reclamation systems interwork correctly. - // -#ifdef PTHREAD_CANCEL_DEFERRED - ForceSynchronousCancel () - { (void) pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, &old_type); } - - ~ForceSynchronousCancel () - { (void) pthread_setcanceltype (old_type, &old_type); } - - private: - int old_type; -#endif // PTHREAD_CANCEL_DEFERRED -}; - -#endif // _POSIX_THREADS - -#endif // _THREAD_HH |