diff options
Diffstat (limited to 'ace/os_include/pthread.h')
| -rw-r--r-- | ace/os_include/pthread.h | 376 |
1 files changed, 370 insertions, 6 deletions
diff --git a/ace/os_include/pthread.h b/ace/os_include/pthread.h index 3a1c0be9d82..fe672b0d4ee 100644 --- a/ace/os_include/pthread.h +++ b/ace/os_include/pthread.h @@ -2,19 +2,19 @@ //============================================================================= /** - * @file pthread.h + * @file os_pthread.h * * threads * * $Id$ * - * @author Don Hinton <dhinton@ieee.org> + * @author Don Hinton <dhinton@dresystems.com> * @author This code was originally in various places including ace/OS.h. */ //============================================================================= -#ifndef ACE_OS_INCLUDE_PTHREAD_H -#define ACE_OS_INCLUDE_PTHREAD_H +#ifndef ACE_OS_INCLUDE_OS_PTHREAD_H +#define ACE_OS_INCLUDE_OS_PTHREAD_H #include "ace/pre.h" @@ -26,9 +26,373 @@ #include "ace/os_include/sys/types.h" +// This needs to go here *first* to avoid problems with AIX. +# if defined (ACE_HAS_PTHREADS) +# define ACE_DONT_INCLUDE_ACE_SIGNAL_H +# include "ace/os_include/signal.h" +# undef ACE_DONT_INCLUDE_ACE_SIGNAL_H +# if defined (DIGITAL_UNIX) +# define pthread_self __pthread_self +extern "C" pthread_t pthread_self (void); +# endif /* DIGITAL_UNIX */ + +# if defined (HPUX_10) +// HP-UX 10 needs to see cma_sigwait, and since _CMA_NOWRAPPERS_ is defined, +// this header does not get included from pthreads.h. +# include /**/x <dce/cma_sigwait.h> +# endif /* HPUX_10 */ +# endif /* ACE_HAS_PTHREADS */ + + #if !defined (ACE_LACKS_PTHREAD_H) -# include /**/ <pthread.h> + extern "C" { +# include /**/ <pthread.h> + } #endif /* !ACE_LACKS_PTHREAD_H */ +// @todo: need to reoganize to put includes at the top and the rest of the +// code at the bottom. Also, move the classes out of this file. +#if defined (ACE_HAS_PTHREADS) +# define ACE_SCHED_OTHER SCHED_OTHER +# define ACE_SCHED_FIFO SCHED_FIFO +# define ACE_SCHED_RR SCHED_RR + +// Definitions for mapping POSIX pthreads draft 6 into 1003.1c names + +# if defined (ACE_HAS_PTHREADS_DRAFT6) +# define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_LOCAL +# define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_GLOBAL +# define PTHREAD_CREATE_UNDETACHED 0 +# define PTHREAD_CREATE_DETACHED 1 +# define PTHREAD_CREATE_JOINABLE 0 +# define PTHREAD_EXPLICIT_SCHED 0 +# define PTHREAD_MIN_PRIORITY 0 +# define PTHREAD_MAX_PRIORITY 126 +# endif /* ACE_HAS_PTHREADS_DRAFT6 */ + +// Definitions for THREAD- and PROCESS-LEVEL priorities...some +// implementations define these while others don't. In order to +// further complicate matters, we don't redefine the default (*_DEF) +// values if they've already been defined, which allows individual +// programs to have their own ACE-wide "default". + +// PROCESS-level values +# if defined (_POSIX_PRIORITY_SCHEDULING) && \ + !defined(_UNICOS) && !defined(UNIXWARE_7_1) +# define ACE_PROC_PRI_FIFO_MIN (sched_get_priority_min(SCHED_FIFO)) +# define ACE_PROC_PRI_RR_MIN (sched_get_priority_min(SCHED_RR)) +# if defined (HPUX) + // HP-UX's other is the SCHED_HPUX class, which uses historical + // values that have reverse semantics from POSIX (low value is + // more important priority). To use these in pthreads calls, + // the values need to be converted. The other scheduling classes + // don't need this special treatment. +# define ACE_PROC_PRI_OTHER_MIN \ + (sched_get_priority_min(SCHED_OTHER)) +# else +# define ACE_PROC_PRI_OTHER_MIN (sched_get_priority_min(SCHED_OTHER)) +# endif /* HPUX */ +# else /* UNICOS is missing a sched_get_priority_min() implementation, + SCO too */ +# define ACE_PROC_PRI_FIFO_MIN 0 +# define ACE_PROC_PRI_RR_MIN 0 +# define ACE_PROC_PRI_OTHER_MIN 0 +# endif + +# if defined (_POSIX_PRIORITY_SCHEDULING) && !defined(UNIXWARE_7_1) +# define ACE_PROC_PRI_FIFO_MAX (sched_get_priority_max(SCHED_FIFO)) +# define ACE_PROC_PRI_RR_MAX (sched_get_priority_max(SCHED_RR)) +# if defined (HPUX) +# define ACE_PROC_PRI_OTHER_MAX \ + (sched_get_priority_max(SCHED_OTHER)) +# else +# define ACE_PROC_PRI_OTHER_MAX (sched_get_priority_max(SCHED_OTHER)) +# endif /* HPUX */ +# else /* SCO missing sched_get_priority_max() implementation */ +# define ACE_PROC_PRI_FIFO_MAX 59 +# define ACE_PROC_PRI_RR_MAX 59 +# define ACE_PROC_PRI_OTHER_MAX 59 +# endif + +# if !defined(ACE_PROC_PRI_FIFO_DEF) +# define ACE_PROC_PRI_FIFO_DEF (ACE_PROC_PRI_FIFO_MIN + (ACE_PROC_PRI_FIFO_MAX - ACE_PROC_PRI_FIFO_MIN)/2) +# endif +# if !defined(ACE_PROC_PRI_RR_DEF) +# define ACE_PROC_PRI_RR_DEF (ACE_PROC_PRI_RR_MIN + (ACE_PROC_PRI_RR_MAX - ACE_PROC_PRI_RR_MIN)/2) +# endif +# if !defined(ACE_PROC_PRI_OTHER_DEF) +# define ACE_PROC_PRI_OTHER_DEF (ACE_PROC_PRI_OTHER_MIN + (ACE_PROC_PRI_OTHER_MAX - ACE_PROC_PRI_OTHER_MIN)/2) +# endif + +// THREAD-level values +# if defined(PRI_FIFO_MIN) && defined(PRI_FIFO_MAX) && defined(PRI_RR_MIN) && defined(PRI_RR_MAX) && defined(PRI_OTHER_MIN) && defined(PRI_OTHER_MAX) +# if !defined (ACE_THR_PRI_FIFO_MIN) +# define ACE_THR_PRI_FIFO_MIN (long) PRI_FIFO_MIN +# endif /* !ACE_THR_PRI_FIFO_MIN */ +# if !defined (ACE_THR_PRI_FIFO_MAX) +# define ACE_THR_PRI_FIFO_MAX (long) PRI_FIFO_MAX +# endif /* !ACE_THR_PRI_FIFO_MAX */ +# if !defined (ACE_THR_PRI_RR_MIN) +# define ACE_THR_PRI_RR_MIN (long) PRI_RR_MIN +# endif /* !ACE_THR_PRI_RR_MIN */ +# if !defined (ACE_THR_PRI_RR_MAX) +# define ACE_THR_PRI_RR_MAX (long) PRI_RR_MAX +# endif /* !ACE_THR_PRI_RR_MAX */ +# if !defined (ACE_THR_PRI_OTHER_MIN) +# define ACE_THR_PRI_OTHER_MIN (long) PRI_OTHER_MIN +# endif /* !ACE_THR_PRI_OTHER_MIN */ +# if !defined (ACE_THR_PRI_OTHER_MAX) +# define ACE_THR_PRI_OTHER_MAX (long) PRI_OTHER_MAX +# endif /* !ACE_THR_PRI_OTHER_MAX */ +# elif defined (AIX) + // AIX's priority range is 1 (low) to 127 (high). There aren't + // any preprocessor macros I can find. PRIORITY_MIN is for + // process priorities, as far as I can see, and does not apply + // to thread priority. The 1 to 127 range is from the + // pthread_attr_setschedparam man page (Steve Huston, 18-May-2001). +# if !defined (ACE_THR_PRI_FIFO_MIN) +# define ACE_THR_PRI_FIFO_MIN (long) 1 +# endif /* !ACE_THR_PRI_FIFO_MIN */ +# if !defined (ACE_THR_PRI_FIFO_MAX) +# define ACE_THR_PRI_FIFO_MAX (long) 127 +# endif /* !ACE_THR_PRI_FIFO_MAX */ +# if !defined (ACE_THR_PRI_RR_MIN) +# define ACE_THR_PRI_RR_MIN (long) 1 +# endif /* !ACE_THR_PRI_RR_MIN */ +# if !defined (ACE_THR_PRI_RR_MAX) +# define ACE_THR_PRI_RR_MAX (long) 127 +# endif /* !ACE_THR_PRI_RR_MAX */ +# if !defined (ACE_THR_PRI_OTHER_MIN) +# define ACE_THR_PRI_OTHER_MIN (long) 1 +# endif /* !ACE_THR_PRI_OTHER_MIN */ +# if !defined (ACE_THR_PRI_OTHER_MAX) +# define ACE_THR_PRI_OTHER_MAX (long) 127 +# endif /* !ACE_THR_PRI_OTHER_MAX */ +# elif defined (sun) +# if !defined (ACE_THR_PRI_FIFO_MIN) +# define ACE_THR_PRI_FIFO_MIN (long) 0 +# endif /* !ACE_THR_PRI_FIFO_MIN */ +# if !defined (ACE_THR_PRI_FIFO_MAX) +# define ACE_THR_PRI_FIFO_MAX (long) 59 +# endif /* !ACE_THR_PRI_FIFO_MAX */ +# if !defined (ACE_THR_PRI_RR_MIN) +# define ACE_THR_PRI_RR_MIN (long) 0 +# endif /* !ACE_THR_PRI_RR_MIN */ +# if !defined (ACE_THR_PRI_RR_MAX) +# define ACE_THR_PRI_RR_MAX (long) 59 +# endif /* !ACE_THR_PRI_RR_MAX */ +# if !defined (ACE_THR_PRI_OTHER_MIN) +# define ACE_THR_PRI_OTHER_MIN (long) 0 +# endif /* !ACE_THR_PRI_OTHER_MIN */ +# if !defined (ACE_THR_PRI_OTHER_MAX) +# define ACE_THR_PRI_OTHER_MAX (long) 127 +# endif /* !ACE_THR_PRI_OTHER_MAX */ +# else +# if !defined (ACE_THR_PRI_FIFO_MIN) +# define ACE_THR_PRI_FIFO_MIN (long) ACE_PROC_PRI_FIFO_MIN +# endif /* !ACE_THR_PRI_FIFO_MIN */ +# if !defined (ACE_THR_PRI_FIFO_MAX) +# define ACE_THR_PRI_FIFO_MAX (long) ACE_PROC_PRI_FIFO_MAX +# endif /* !ACE_THR_PRI_FIFO_MAX */ +# if !defined (ACE_THR_PRI_RR_MIN) +# define ACE_THR_PRI_RR_MIN (long) ACE_PROC_PRI_RR_MIN +# endif /* !ACE_THR_PRI_RR_MIN */ +# if !defined (ACE_THR_PRI_RR_MAX) +# define ACE_THR_PRI_RR_MAX (long) ACE_PROC_PRI_RR_MAX +# endif /* !ACE_THR_PRI_RR_MAX */ +# if !defined (ACE_THR_PRI_OTHER_MIN) +# define ACE_THR_PRI_OTHER_MIN (long) ACE_PROC_PRI_OTHER_MIN +# endif /* !ACE_THR_PRI_OTHER_MIN */ +# if !defined (ACE_THR_PRI_OTHER_MAX) +# define ACE_THR_PRI_OTHER_MAX (long) ACE_PROC_PRI_OTHER_MAX +# endif /* !ACE_THR_PRI_OTHER_MAX */ +# endif +# if !defined(ACE_THR_PRI_FIFO_DEF) +# define ACE_THR_PRI_FIFO_DEF ((ACE_THR_PRI_FIFO_MIN + ACE_THR_PRI_FIFO_MAX)/2) +# endif +# if !defined(ACE_THR_PRI_RR_DEF) +# define ACE_THR_PRI_RR_DEF ((ACE_THR_PRI_RR_MIN + ACE_THR_PRI_RR_MAX)/2) +# endif +# if !defined(ACE_THR_PRI_OTHER_DEF) +# define ACE_THR_PRI_OTHER_DEF ((ACE_THR_PRI_OTHER_MIN + ACE_THR_PRI_OTHER_MAX)/2) +# endif + // Typedefs to help compatibility with Windows NT and Pthreads. + typedef pthread_t ACE_hthread_t; + typedef pthread_t ACE_thread_t; + +# if defined (ACE_HAS_TSS_EMULATION) + typedef pthread_key_t ACE_OS_thread_key_t; + typedef u_long ACE_thread_key_t; +# else /* ! ACE_HAS_TSS_EMULATION */ + typedef pthread_key_t ACE_thread_key_t; +# endif /* ! ACE_HAS_TSS_EMULATION */ + +# if !defined (ACE_LACKS_COND_T) + typedef pthread_mutex_t ACE_mutex_t; + typedef pthread_cond_t ACE_cond_t; + typedef pthread_condattr_t ACE_condattr_t; + typedef pthread_mutexattr_t ACE_mutexattr_t; +# endif /* ! ACE_LACKS_COND_T */ + typedef pthread_mutex_t ACE_thread_mutex_t; + +# if !defined (PTHREAD_CANCEL_DISABLE) +# define PTHREAD_CANCEL_DISABLE 0 +# endif /* PTHREAD_CANCEL_DISABLE */ + +# if !defined (PTHREAD_CANCEL_ENABLE) +# define PTHREAD_CANCEL_ENABLE 0 +# endif /* PTHREAD_CANCEL_ENABLE */ + +# if !defined (PTHREAD_CANCEL_DEFERRED) +# define PTHREAD_CANCEL_DEFERRED 0 +# endif /* PTHREAD_CANCEL_DEFERRED */ + +# if !defined (PTHREAD_CANCEL_ASYNCHRONOUS) +# define PTHREAD_CANCEL_ASYNCHRONOUS 0 +# endif /* PTHREAD_CANCEL_ASYNCHRONOUS */ + +# define THR_CANCEL_DISABLE PTHREAD_CANCEL_DISABLE +# define THR_CANCEL_ENABLE PTHREAD_CANCEL_ENABLE +# define THR_CANCEL_DEFERRED PTHREAD_CANCEL_DEFERRED +# define THR_CANCEL_ASYNCHRONOUS PTHREAD_CANCEL_ASYNCHRONOUS + +# if !defined (PTHREAD_CREATE_JOINABLE) +# if defined (PTHREAD_CREATE_UNDETACHED) +# define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED +# else +# define PTHREAD_CREATE_JOINABLE 0 +# endif /* PTHREAD_CREATE_UNDETACHED */ +# endif /* PTHREAD_CREATE_JOINABLE */ + +# if !defined (PTHREAD_CREATE_DETACHED) +# define PTHREAD_CREATE_DETACHED 1 +# endif /* PTHREAD_CREATE_DETACHED */ + +# if !defined (PTHREAD_PROCESS_PRIVATE) && !defined (ACE_HAS_PTHREAD_PROCESS_ENUM) +# if defined (PTHREAD_MUTEXTYPE_FAST) +# define PTHREAD_PROCESS_PRIVATE PTHREAD_MUTEXTYPE_FAST +# else +# define PTHREAD_PROCESS_PRIVATE 0 +# endif /* PTHREAD_MUTEXTYPE_FAST */ +# endif /* PTHREAD_PROCESS_PRIVATE */ + +# if !defined (PTHREAD_PROCESS_SHARED) && !defined (ACE_HAS_PTHREAD_PROCESS_ENUM) +# if defined (PTHREAD_MUTEXTYPE_FAST) +# define PTHREAD_PROCESS_SHARED PTHREAD_MUTEXTYPE_FAST +# else +# define PTHREAD_PROCESS_SHARED 1 +# endif /* PTHREAD_MUTEXTYPE_FAST */ +# endif /* PTHREAD_PROCESS_SHARED */ + +# if defined (ACE_HAS_PTHREADS_DRAFT4) +# if defined (PTHREAD_PROCESS_PRIVATE) +# if !defined (USYNC_THREAD) +# define USYNC_THREAD PTHREAD_PROCESS_PRIVATE +# endif /* ! USYNC_THREAD */ +# else +# if !defined (USYNC_THREAD) +# define USYNC_THREAD MUTEX_NONRECURSIVE_NP +# endif /* ! USYNC_THREAD */ +# endif /* PTHREAD_PROCESS_PRIVATE */ + +# if defined (PTHREAD_PROCESS_SHARED) +# if !defined (USYNC_PROCESS) +# define USYNC_PROCESS PTHREAD_PROCESS_SHARED +# endif /* ! USYNC_PROCESS */ +# else +# if !defined (USYNC_PROCESS) +# define USYNC_PROCESS MUTEX_NONRECURSIVE_NP +# endif /* ! USYNC_PROCESS */ +# endif /* PTHREAD_PROCESS_SHARED */ +# elif !defined (ACE_HAS_STHREADS) +# if !defined (USYNC_THREAD) +# define USYNC_THREAD PTHREAD_PROCESS_PRIVATE +# endif /* ! USYNC_THREAD */ +# if !defined (USYNC_PROCESS) +# define USYNC_PROCESS PTHREAD_PROCESS_SHARED +# endif /* ! USYNC_PROCESS */ +# endif /* ACE_HAS_PTHREADS_DRAFT4 */ + + /* MM-Graz: prevent warnings */ +# undef THR_BOUND +# undef THR_NEW_LWP +# undef THR_DETACHED +# undef THR_SUSPENDED +# undef THR_DAEMON + +# define THR_BOUND 0x00000001 +# if defined (CHORUS) +# define THR_NEW_LWP 0x00000000 +# else +# define THR_NEW_LWP 0x00000002 +# endif /* CHORUS */ +# define THR_DETACHED 0x00000040 +# define THR_SUSPENDED 0x00000080 +# define THR_DAEMON 0x00000100 +# define THR_JOINABLE 0x00010000 +# define THR_SCHED_FIFO 0x00020000 +# define THR_SCHED_RR 0x00040000 +# define THR_SCHED_DEFAULT 0x00080000 + +# if defined (ACE_HAS_IRIX62_THREADS) +# define THR_SCOPE_SYSTEM 0x00100000 +# else +# define THR_SCOPE_SYSTEM THR_BOUND +# endif /*ACE_HAS_IRIX62_THREADS*/ + +# define THR_SCOPE_PROCESS 0x00200000 +# define THR_INHERIT_SCHED 0x00400000 +# define THR_EXPLICIT_SCHED 0x00800000 +# define THR_SCHED_IO 0x01000000 + +# if !defined (ACE_HAS_STHREADS) +# if !defined (ACE_HAS_POSIX_SEM) +/** + * @class ACE_sema_t + * + * @brief This is used to implement semaphores for platforms that support + * POSIX pthreads, but do *not* support POSIX semaphores, i.e., + * it's a different type than the POSIX <sem_t>. + */ +class ACE_OS_Export ACE_sema_t +{ +friend class ACE_OS; +protected: + /// Serialize access to internal state. + ACE_mutex_t lock_; + + /// Block until there are no waiters. + ACE_cond_t count_nonzero_; + + /// Count of the semaphore. + u_long count_; + + /// Number of threads that have called <ACE_OS::sema_wait>. + u_long waiters_; +}; +# endif /* !ACE_HAS_POSIX_SEM */ + +# if defined (ACE_LACKS_PTHREAD_YIELD) && defined (ACE_HAS_THR_YIELD) + // If we are on Solaris we can just reuse the existing + // implementations of these synchronization types. +# if !defined (ACE_LACKS_RWLOCK_T) +# include /**/ <synch.h> + typedef rwlock_t ACE_rwlock_t; +# endif /* !ACE_LACKS_RWLOCK_T */ +# include /**/ <thread.h> +# endif /* (ACE_LACKS_PTHREAD_YIELD) && defined (ACE_HAS_THR_YIELD) */ + +# else +# if !defined (ACE_HAS_POSIX_SEM) + typedef sema_t ACE_sema_t; +# endif /* !ACE_HAS_POSIX_SEM */ +# endif /* !ACE_HAS_STHREADS */ + +# if defined (ACE_HAS_PTHREADS_UNIX98_EXT) + typedef pthread_rwlock_t ACE_rwlock_t; +# endif /* ACE_HAS_PTHREADS_UNIX98_EXT */ + +#endif /* ACE_HAS_PTHREADS */ + #include "ace/post.h" -#endif /* ACE_OS_INCLUDE_PTHREAD_H */ +#endif /* ACE_OS_INCLUDE_OS_PTHREAD_H */ |