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pthread.h
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pthread.h
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/* This is an implementation of the threads API of POSIX 1003.1-2001.
*
* --------------------------------------------------------------------------
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999,2005 Pthreads-win32 contributors
*
* Contact Email: rpj@callisto.canberra.edu.au
*
* The current list of contributors is contained
* in the file CONTRIBUTORS included with the source
* code distribution. The list can also be seen at the
* following World Wide Web location:
* http://sources.redhat.com/pthreads-win32/contributors.html
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library in the file COPYING.LIB;
* if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined( PTHREAD_H )
#define PTHREAD_H
/*
* See the README file for an explanation of the pthreads-win32 version
* numbering scheme and how the DLL is named etc.
*/
#define PTW32_VERSION 2,10,0,0
#define PTW32_VERSION_STRING "2, 10, 0, 0\0"
/* There are three implementations of cancel cleanup.
* Note that pthread.h is included in both application
* compilation units and also internally for the library.
* The code here and within the library aims to work
* for all reasonable combinations of environments.
*
* The three implementations are:
*
* WIN32 SEH
* C
* C++
*
* Please note that exiting a push/pop block via
* "return", "exit", "break", or "continue" will
* lead to different behaviour amongst applications
* depending upon whether the library was built
* using SEH, C++, or C. For example, a library built
* with SEH will call the cleanup routine, while both
* C++ and C built versions will not.
*/
/*
* Define defaults for cleanup code.
* Note: Unless the build explicitly defines one of the following, then
* we default to standard C style cleanup. This style uses setjmp/longjmp
* in the cancellation and thread exit implementations and therefore won't
* do stack unwinding if linked to applications that have it (e.g.
* C++ apps). This is currently consistent with most/all commercial Unix
* POSIX threads implementations.
*/
#if !defined( __CLEANUP_SEH ) && !defined( __CLEANUP_CXX ) && !defined( __CLEANUP_C )
# define __CLEANUP_C
#endif
#if defined( __CLEANUP_SEH ) && ( !defined( _MSC_VER ) && !defined(PTW32_RC_MSC))
#error ERROR [__FILE__, line __LINE__]: SEH is not supported for this compiler.
#endif
/*
* Stop here if we are being included by the resource compiler.
*/
#if !defined(RC_INVOKED)
#undef PTW32_LEVEL
#if defined(_POSIX_SOURCE)
#define PTW32_LEVEL 0
/* Early POSIX */
#endif
#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309
#undef PTW32_LEVEL
#define PTW32_LEVEL 1
/* Include 1b, 1c and 1d */
#endif
#if defined(INCLUDE_NP)
#undef PTW32_LEVEL
#define PTW32_LEVEL 2
/* Include Non-Portable extensions */
#endif
#define PTW32_LEVEL_MAX 3
#if ( defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112 ) || !defined(PTW32_LEVEL)
#define PTW32_LEVEL PTW32_LEVEL_MAX
/* Include everything */
#endif
#if defined(_UWIN)
# define HAVE_STRUCT_TIMESPEC 1
# define HAVE_SIGNAL_H 1
# undef HAVE_PTW32_CONFIG_H
# pragma comment(lib, "pthread")
#endif
#if defined(__MINGW32__) || defined(__MINGW64__)
# define PTW32_CONFIG_MINGW
#endif
#if defined(_MSC_VER)
# if _MSC_VER < 1300
# define PTW32_CONFIG_MSVC6
# endif
# if _MSC_VER < 1400
# define PTW32_CONFIG_MSVC7
# endif
#endif
/*
* -------------------------------------------------------------
*
*
* Module: pthread.h
*
* Purpose:
* Provides an implementation of PThreads based upon the
* standard:
*
* POSIX 1003.1-2001
* and
* The Single Unix Specification version 3
*
* (these two are equivalent)
*
* in order to enhance code portability between Windows,
* various commercial Unix implementations, and Linux.
*
* See the ANNOUNCE file for a full list of conforming
* routines and defined constants, and a list of missing
* routines and constants not defined in this implementation.
*
* Authors:
* There have been many contributors to this library.
* The initial implementation was contributed by
* John Bossom, and several others have provided major
* sections or revisions of parts of the implementation.
* Often significant effort has been contributed to
* find and fix important bugs and other problems to
* improve the reliability of the library, which sometimes
* is not reflected in the amount of code which changed as
* result.
* As much as possible, the contributors are acknowledged
* in the ChangeLog file in the source code distribution
* where their changes are noted in detail.
*
* Contributors are listed in the CONTRIBUTORS file.
*
* As usual, all bouquets go to the contributors, and all
* brickbats go to the project maintainer.
*
* Maintainer:
* The code base for this project is coordinated and
* eventually pre-tested, packaged, and made available by
*
* Ross Johnson <rpj@callisto.canberra.edu.au>
*
* QA Testers:
* Ultimately, the library is tested in the real world by
* a host of competent and demanding scientists and
* engineers who report bugs and/or provide solutions
* which are then fixed or incorporated into subsequent
* versions of the library. Each time a bug is fixed, a
* test case is written to prove the fix and ensure
* that later changes to the code don't reintroduce the
* same error. The number of test cases is slowly growing
* and therefore so is the code reliability.
*
* Compliance:
* See the file ANNOUNCE for the list of implemented
* and not-implemented routines and defined options.
* Of course, these are all defined is this file as well.
*
* Web site:
* The source code and other information about this library
* are available from
*
* http://sources.redhat.com/pthreads-win32/
*
* -------------------------------------------------------------
*/
/* Try to avoid including windows.h */
#if defined(PTW32_CONFIG_MINGW) && defined(__cplusplus)
#define PTW32_INCLUDE_WINDOWS_H
#endif
#if defined(PTW32_INCLUDE_WINDOWS_H)
#include <windows.h>
#endif
#if defined(PTW32_CONFIG_MSVC6) || defined(__DMC__)
/*
* VC++6.0 or early compiler's header has no DWORD_PTR type.
*/
typedef unsigned long DWORD_PTR;
typedef unsigned long ULONG_PTR;
#endif
/*
* -----------------
* autoconf switches
* -----------------
*/
#if defined(HAVE_PTW32_CONFIG_H)
#include "config.h"
#endif /* HAVE_PTW32_CONFIG_H */
#if !defined(NEED_FTIME)
#include <time.h>
#else /* NEED_FTIME */
/* use native WIN32 time API */
#endif /* NEED_FTIME */
#if defined(HAVE_SIGNAL_H)
#include <signal.h>
#endif /* HAVE_SIGNAL_H */
#include <limits.h>
/*
* Boolean values to make us independent of system includes.
*/
enum {
PTW32_FALSE = 0,
PTW32_TRUE = (! PTW32_FALSE)
};
/*
* This is a duplicate of what is in the autoconf config.h,
* which is only used when building the pthread-win32 libraries.
*/
#if !defined(PTW32_CONFIG_H)
# if defined(WINCE)
# define NEED_ERRNO
# define NEED_SEM
# endif
# if defined(__MINGW64__)
# define HAVE_STRUCT_TIMESPEC
# define HAVE_MODE_T
# elif defined(_UWIN) || defined(__MINGW32__)
# define HAVE_MODE_T
# endif
#endif
/*
*
*/
#if PTW32_LEVEL >= PTW32_LEVEL_MAX
#if defined(NEED_ERRNO)
#include "need_errno.h"
#else
#include <errno.h>
#endif
#endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */
/*
* Several systems don't define some error numbers.
*/
#if !defined(ENOTSUP)
# define ENOTSUP 48 /* This is the value in Solaris. */
#endif
#if !defined(ETIMEDOUT)
# define ETIMEDOUT 10060 /* Same as WSAETIMEDOUT */
#endif
#if !defined(ENOSYS)
# define ENOSYS 140 /* Semi-arbitrary value */
#endif
#if !defined(EDEADLK)
# if defined(EDEADLOCK)
# define EDEADLK EDEADLOCK
# else
# define EDEADLK 36 /* This is the value in MSVC. */
# endif
#endif
/* POSIX 2008 - related to robust mutexes */
#if !defined(EOWNERDEAD)
# define EOWNERDEAD 43
#endif
#if !defined(ENOTRECOVERABLE)
# define ENOTRECOVERABLE 44
#endif
#include <sched.h>
/*
* To avoid including windows.h we define only those things that we
* actually need from it.
*/
#if !defined(PTW32_INCLUDE_WINDOWS_H)
#if !defined(HANDLE)
# define PTW32__HANDLE_DEF
# define HANDLE void *
#endif
#if !defined(DWORD)
# define PTW32__DWORD_DEF
# define DWORD unsigned long
#endif
#endif
#if !defined(HAVE_STRUCT_TIMESPEC)
#define HAVE_STRUCT_TIMESPEC
#if !defined(_TIMESPEC_DEFINED)
#define _TIMESPEC_DEFINED
struct timespec {
time_t tv_sec;
long tv_nsec;
};
#endif /* _TIMESPEC_DEFINED */
#endif /* HAVE_STRUCT_TIMESPEC */
#if !defined(SIG_BLOCK)
#define SIG_BLOCK 0
#endif /* SIG_BLOCK */
#if !defined(SIG_UNBLOCK)
#define SIG_UNBLOCK 1
#endif /* SIG_UNBLOCK */
#if !defined(SIG_SETMASK)
#define SIG_SETMASK 2
#endif /* SIG_SETMASK */
#if defined(__cplusplus)
extern "C"
{
#endif /* __cplusplus */
/*
* -------------------------------------------------------------
*
* POSIX 1003.1-2001 Options
* =========================
*
* Options are normally set in <unistd.h>, which is not provided
* with pthreads-win32.
*
* For conformance with the Single Unix Specification (version 3), all of the
* options below are defined, and have a value of either -1 (not supported)
* or 200112L (supported).
*
* These options can neither be left undefined nor have a value of 0, because
* either indicates that sysconf(), which is not implemented, may be used at
* runtime to check the status of the option.
*
* _POSIX_THREADS (== 200112L)
* If == 200112L, you can use threads
*
* _POSIX_THREAD_ATTR_STACKSIZE (== 200112L)
* If == 200112L, you can control the size of a thread's
* stack
* pthread_attr_getstacksize
* pthread_attr_setstacksize
*
* _POSIX_THREAD_ATTR_STACKADDR (== -1)
* If == 200112L, you can allocate and control a thread's
* stack. If not supported, the following functions
* will return ENOSYS, indicating they are not
* supported:
* pthread_attr_getstackaddr
* pthread_attr_setstackaddr
*
* _POSIX_THREAD_PRIORITY_SCHEDULING (== -1)
* If == 200112L, you can use realtime scheduling.
* This option indicates that the behaviour of some
* implemented functions conforms to the additional TPS
* requirements in the standard. E.g. rwlocks favour
* writers over readers when threads have equal priority.
*
* _POSIX_THREAD_PRIO_INHERIT (== -1)
* If == 200112L, you can create priority inheritance
* mutexes.
* pthread_mutexattr_getprotocol +
* pthread_mutexattr_setprotocol +
*
* _POSIX_THREAD_PRIO_PROTECT (== -1)
* If == 200112L, you can create priority ceiling mutexes
* Indicates the availability of:
* pthread_mutex_getprioceiling
* pthread_mutex_setprioceiling
* pthread_mutexattr_getprioceiling
* pthread_mutexattr_getprotocol +
* pthread_mutexattr_setprioceiling
* pthread_mutexattr_setprotocol +
*
* _POSIX_THREAD_PROCESS_SHARED (== -1)
* If set, you can create mutexes and condition
* variables that can be shared with another
* process.If set, indicates the availability
* of:
* pthread_mutexattr_getpshared
* pthread_mutexattr_setpshared
* pthread_condattr_getpshared
* pthread_condattr_setpshared
*
* _POSIX_THREAD_SAFE_FUNCTIONS (== 200112L)
* If == 200112L you can use the special *_r library
* functions that provide thread-safe behaviour
*
* _POSIX_READER_WRITER_LOCKS (== 200112L)
* If == 200112L, you can use read/write locks
*
* _POSIX_SPIN_LOCKS (== 200112L)
* If == 200112L, you can use spin locks
*
* _POSIX_BARRIERS (== 200112L)
* If == 200112L, you can use barriers
*
* + These functions provide both 'inherit' and/or
* 'protect' protocol, based upon these macro
* settings.
*
* -------------------------------------------------------------
*/
/*
* POSIX Options
*/
#undef _POSIX_THREADS
#define _POSIX_THREADS 200809L
#undef _POSIX_READER_WRITER_LOCKS
#define _POSIX_READER_WRITER_LOCKS 200809L
#undef _POSIX_SPIN_LOCKS
#define _POSIX_SPIN_LOCKS 200809L
#undef _POSIX_BARRIERS
#define _POSIX_BARRIERS 200809L
#undef _POSIX_THREAD_SAFE_FUNCTIONS
#define _POSIX_THREAD_SAFE_FUNCTIONS 200809L
#undef _POSIX_THREAD_ATTR_STACKSIZE
#define _POSIX_THREAD_ATTR_STACKSIZE 200809L
/*
* The following options are not supported
*/
#undef _POSIX_THREAD_ATTR_STACKADDR
#define _POSIX_THREAD_ATTR_STACKADDR -1
#undef _POSIX_THREAD_PRIO_INHERIT
#define _POSIX_THREAD_PRIO_INHERIT -1
#undef _POSIX_THREAD_PRIO_PROTECT
#define _POSIX_THREAD_PRIO_PROTECT -1
/* TPS is not fully supported. */
#undef _POSIX_THREAD_PRIORITY_SCHEDULING
#define _POSIX_THREAD_PRIORITY_SCHEDULING -1
#undef _POSIX_THREAD_PROCESS_SHARED
#define _POSIX_THREAD_PROCESS_SHARED -1
/*
* POSIX 1003.1-2001 Limits
* ===========================
*
* These limits are normally set in <limits.h>, which is not provided with
* pthreads-win32.
*
* PTHREAD_DESTRUCTOR_ITERATIONS
* Maximum number of attempts to destroy
* a thread's thread-specific data on
* termination (must be at least 4)
*
* PTHREAD_KEYS_MAX
* Maximum number of thread-specific data keys
* available per process (must be at least 128)
*
* PTHREAD_STACK_MIN
* Minimum supported stack size for a thread
*
* PTHREAD_THREADS_MAX
* Maximum number of threads supported per
* process (must be at least 64).
*
* SEM_NSEMS_MAX
* The maximum number of semaphores a process can have.
* (must be at least 256)
*
* SEM_VALUE_MAX
* The maximum value a semaphore can have.
* (must be at least 32767)
*
*/
#undef _POSIX_THREAD_DESTRUCTOR_ITERATIONS
#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
#undef PTHREAD_DESTRUCTOR_ITERATIONS
#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS
#undef _POSIX_THREAD_KEYS_MAX
#define _POSIX_THREAD_KEYS_MAX 128
#undef PTHREAD_KEYS_MAX
#define PTHREAD_KEYS_MAX _POSIX_THREAD_KEYS_MAX
#undef PTHREAD_STACK_MIN
#define PTHREAD_STACK_MIN 0
#undef _POSIX_THREAD_THREADS_MAX
#define _POSIX_THREAD_THREADS_MAX 64
/* Arbitrary value */
#undef PTHREAD_THREADS_MAX
#define PTHREAD_THREADS_MAX 2019
#undef _POSIX_SEM_NSEMS_MAX
#define _POSIX_SEM_NSEMS_MAX 256
/* Arbitrary value */
#undef SEM_NSEMS_MAX
#define SEM_NSEMS_MAX 1024
#undef _POSIX_SEM_VALUE_MAX
#define _POSIX_SEM_VALUE_MAX 32767
#undef SEM_VALUE_MAX
#define SEM_VALUE_MAX INT_MAX
#if defined(__GNUC__) && !defined(__declspec)
# error Please upgrade your GNU compiler to one that supports __declspec.
#endif
/*
* When building the library, you should define PTW32_BUILD so that
* the variables/functions are exported correctly. When using the library,
* do NOT define PTW32_BUILD, and then the variables/functions will
* be imported correctly.
*/
#if !defined(PTW32_STATIC_LIB)
# if defined(PTW32_BUILD)
# define PTW32_DLLPORT __declspec (dllexport)
# else
# define PTW32_DLLPORT __declspec (dllimport)
# endif
#else
# define PTW32_DLLPORT
#endif
/*
* The Open Watcom C/C++ compiler uses a non-standard calling convention
* that passes function args in registers unless __cdecl is explicitly specified
* in exposed function prototypes.
*
* We force all calls to cdecl even though this could slow Watcom code down
* slightly. If you know that the Watcom compiler will be used to build both
* the DLL and application, then you can probably define this as a null string.
* Remember that pthread.h (this file) is used for both the DLL and application builds.
*/
#define PTW32_CDECL __cdecl
#if defined(_UWIN) && PTW32_LEVEL >= PTW32_LEVEL_MAX
# include <sys/types.h>
#else
/*
* Generic handle type - intended to extend uniqueness beyond
* that available with a simple pointer. It should scale for either
* IA-32 or IA-64.
*/
typedef struct {
void * p; /* Pointer to actual object */
unsigned int x; /* Extra information - reuse count etc */
} ptw32_handle_t;
typedef ptw32_handle_t pthread_t;
typedef struct pthread_attr_t_ * pthread_attr_t;
typedef struct pthread_once_t_ pthread_once_t;
typedef struct pthread_key_t_ * pthread_key_t;
typedef struct pthread_mutex_t_ * pthread_mutex_t;
typedef struct pthread_mutexattr_t_ * pthread_mutexattr_t;
typedef struct pthread_cond_t_ * pthread_cond_t;
typedef struct pthread_condattr_t_ * pthread_condattr_t;
#endif
typedef struct pthread_rwlock_t_ * pthread_rwlock_t;
typedef struct pthread_rwlockattr_t_ * pthread_rwlockattr_t;
typedef struct pthread_spinlock_t_ * pthread_spinlock_t;
typedef struct pthread_barrier_t_ * pthread_barrier_t;
typedef struct pthread_barrierattr_t_ * pthread_barrierattr_t;
/*
* ====================
* ====================
* POSIX Threads
* ====================
* ====================
*/
enum {
/*
* pthread_attr_{get,set}detachstate
*/
PTHREAD_CREATE_JOINABLE = 0, /* Default */
PTHREAD_CREATE_DETACHED = 1,
/*
* pthread_attr_{get,set}inheritsched
*/
PTHREAD_INHERIT_SCHED = 0,
PTHREAD_EXPLICIT_SCHED = 1, /* Default */
/*
* pthread_{get,set}scope
*/
PTHREAD_SCOPE_PROCESS = 0,
PTHREAD_SCOPE_SYSTEM = 1, /* Default */
/*
* pthread_setcancelstate paramters
*/
PTHREAD_CANCEL_ENABLE = 0, /* Default */
PTHREAD_CANCEL_DISABLE = 1,
/*
* pthread_setcanceltype parameters
*/
PTHREAD_CANCEL_ASYNCHRONOUS = 0,
PTHREAD_CANCEL_DEFERRED = 1, /* Default */
/*
* pthread_mutexattr_{get,set}pshared
* pthread_condattr_{get,set}pshared
*/
PTHREAD_PROCESS_PRIVATE = 0,
PTHREAD_PROCESS_SHARED = 1,
/*
* pthread_mutexattr_{get,set}robust
*/
PTHREAD_MUTEX_STALLED = 0, /* Default */
PTHREAD_MUTEX_ROBUST = 1,
/*
* pthread_barrier_wait
*/
PTHREAD_BARRIER_SERIAL_THREAD = -1
};
/*
* ====================
* ====================
* cancellation
* ====================
* ====================
*/
#define PTHREAD_CANCELED ((void *)(size_t) -1)
/*
* ====================
* ====================
* Once Key
* ====================
* ====================
*/
#define PTHREAD_ONCE_INIT { PTW32_FALSE, 0, 0, 0}
struct pthread_once_t_
{
int done; /* indicates if user function has been executed */
void * lock;
int reserved1;
int reserved2;
};
/*
* ====================
* ====================
* Object initialisers
* ====================
* ====================
*/
#define PTHREAD_MUTEX_INITIALIZER ((pthread_mutex_t)(size_t) -1)
#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER ((pthread_mutex_t)(size_t) -2)
#define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER ((pthread_mutex_t)(size_t) -3)
/*
* Compatibility with LinuxThreads
*/
#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP PTHREAD_RECURSIVE_MUTEX_INITIALIZER
#define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP PTHREAD_ERRORCHECK_MUTEX_INITIALIZER
#define PTHREAD_COND_INITIALIZER ((pthread_cond_t)(size_t) -1)
#define PTHREAD_RWLOCK_INITIALIZER ((pthread_rwlock_t)(size_t) -1)
#define PTHREAD_SPINLOCK_INITIALIZER ((pthread_spinlock_t)(size_t) -1)
/*
* Mutex types.
*/
enum
{
/* Compatibility with LinuxThreads */
PTHREAD_MUTEX_FAST_NP,
PTHREAD_MUTEX_RECURSIVE_NP,
PTHREAD_MUTEX_ERRORCHECK_NP,
PTHREAD_MUTEX_TIMED_NP = PTHREAD_MUTEX_FAST_NP,
PTHREAD_MUTEX_ADAPTIVE_NP = PTHREAD_MUTEX_FAST_NP,
/* For compatibility with POSIX */
PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_FAST_NP,
PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP,
PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP,
PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
};
typedef struct ptw32_cleanup_t ptw32_cleanup_t;
#if defined(_MSC_VER)
/* Disable MSVC 'anachronism used' warning */
#pragma warning( disable : 4229 )
#endif
typedef void (* PTW32_CDECL ptw32_cleanup_callback_t)(void *);
#if defined(_MSC_VER)
#pragma warning( default : 4229 )
#endif
struct ptw32_cleanup_t
{
ptw32_cleanup_callback_t routine;
void *arg;
struct ptw32_cleanup_t *prev;
};
#if defined(__CLEANUP_SEH)
/*
* WIN32 SEH version of cancel cleanup.
*/
#define pthread_cleanup_push( _rout, _arg ) \
{ \
ptw32_cleanup_t _cleanup; \
\
_cleanup.routine = (ptw32_cleanup_callback_t)(_rout); \
_cleanup.arg = (_arg); \
__try \
{ \
#define pthread_cleanup_pop( _execute ) \
} \
__finally \
{ \
if( _execute || AbnormalTermination()) \
{ \
(*(_cleanup.routine))( _cleanup.arg ); \
} \
} \
}
#else /* __CLEANUP_SEH */
#if defined(__CLEANUP_C)
/*
* C implementation of PThreads cancel cleanup
*/
#define pthread_cleanup_push( _rout, _arg ) \
{ \
ptw32_cleanup_t _cleanup; \
\
ptw32_push_cleanup( &_cleanup, (ptw32_cleanup_callback_t) (_rout), (_arg) ); \
#define pthread_cleanup_pop( _execute ) \
(void) ptw32_pop_cleanup( _execute ); \
}
#else /* __CLEANUP_C */
#if defined(__CLEANUP_CXX)
/*
* C++ version of cancel cleanup.
* - John E. Bossom.
*/
class PThreadCleanup {
/*
* PThreadCleanup
*
* Purpose
* This class is a C++ helper class that is
* used to implement pthread_cleanup_push/
* pthread_cleanup_pop.
* The destructor of this class automatically
* pops the pushed cleanup routine regardless
* of how the code exits the scope
* (i.e. such as by an exception)
*/
ptw32_cleanup_callback_t cleanUpRout;
void * obj;
int executeIt;
public:
PThreadCleanup() :
cleanUpRout( 0 ),
obj( 0 ),
executeIt( 0 )
/*
* No cleanup performed
*/
{
}
PThreadCleanup(
ptw32_cleanup_callback_t routine,
void * arg ) :
cleanUpRout( routine ),
obj( arg ),
executeIt( 1 )
/*
* Registers a cleanup routine for 'arg'
*/
{
}
~PThreadCleanup()
{
if ( executeIt && ((void *) cleanUpRout != (void *) 0) )
{
(void) (*cleanUpRout)( obj );
}
}
void execute( int exec )
{
executeIt = exec;
}
};
/*
* C++ implementation of PThreads cancel cleanup;
* This implementation takes advantage of a helper
* class who's destructor automatically calls the
* cleanup routine if we exit our scope weirdly
*/
#define pthread_cleanup_push( _rout, _arg ) \
{ \
PThreadCleanup cleanup((ptw32_cleanup_callback_t)(_rout), \
(void *) (_arg) );
#define pthread_cleanup_pop( _execute ) \
cleanup.execute( _execute ); \
}
#else
#error ERROR [__FILE__, line __LINE__]: Cleanup type undefined.
#endif /* __CLEANUP_CXX */
#endif /* __CLEANUP_C */
#endif /* __CLEANUP_SEH */
/*
* ===============
* ===============
* Methods
* ===============
* ===============
*/
/*
* PThread Attribute Functions
*/
PTW32_DLLPORT int PTW32_CDECL pthread_attr_init (pthread_attr_t * attr);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_destroy (pthread_attr_t * attr);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_getdetachstate (const pthread_attr_t * attr,
int *detachstate);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_getstackaddr (const pthread_attr_t * attr,
void **stackaddr);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_getstacksize (const pthread_attr_t * attr,
size_t * stacksize);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_setdetachstate (pthread_attr_t * attr,
int detachstate);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_setstackaddr (pthread_attr_t * attr,
void *stackaddr);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_setstacksize (pthread_attr_t * attr,
size_t stacksize);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_getschedparam (const pthread_attr_t *attr,
struct sched_param *param);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_setschedparam (pthread_attr_t *attr,
const struct sched_param *param);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_setschedpolicy (pthread_attr_t *,
int);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_getschedpolicy (const pthread_attr_t *,
int *);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_setinheritsched(pthread_attr_t * attr,
int inheritsched);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_getinheritsched(const pthread_attr_t * attr,
int * inheritsched);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_setscope (pthread_attr_t *,
int);
PTW32_DLLPORT int PTW32_CDECL pthread_attr_getscope (const pthread_attr_t *,
int *);
/*
* PThread Functions
*/
PTW32_DLLPORT int PTW32_CDECL pthread_create (pthread_t * tid,
const pthread_attr_t * attr,
void *(PTW32_CDECL *start) (void *),
void *arg);
PTW32_DLLPORT int PTW32_CDECL pthread_detach (pthread_t tid);
PTW32_DLLPORT int PTW32_CDECL pthread_equal (pthread_t t1,
pthread_t t2);
PTW32_DLLPORT void PTW32_CDECL pthread_exit (void *value_ptr);
PTW32_DLLPORT int PTW32_CDECL pthread_join (pthread_t thread,
void **value_ptr);
PTW32_DLLPORT pthread_t PTW32_CDECL pthread_self (void);
PTW32_DLLPORT int PTW32_CDECL pthread_cancel (pthread_t thread);
PTW32_DLLPORT int PTW32_CDECL pthread_setcancelstate (int state,
int *oldstate);
PTW32_DLLPORT int PTW32_CDECL pthread_setcanceltype (int type,
int *oldtype);
PTW32_DLLPORT void PTW32_CDECL pthread_testcancel (void);
PTW32_DLLPORT int PTW32_CDECL pthread_once (pthread_once_t * once_control,
void (PTW32_CDECL *init_routine) (void));
#if PTW32_LEVEL >= PTW32_LEVEL_MAX
PTW32_DLLPORT ptw32_cleanup_t * PTW32_CDECL ptw32_pop_cleanup (int execute);
PTW32_DLLPORT void PTW32_CDECL ptw32_push_cleanup (ptw32_cleanup_t * cleanup,
ptw32_cleanup_callback_t routine,
void *arg);
#endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */
/*
* Thread Specific Data Functions
*/
PTW32_DLLPORT int PTW32_CDECL pthread_key_create (pthread_key_t * key,
void (PTW32_CDECL *destructor) (void *));
PTW32_DLLPORT int PTW32_CDECL pthread_key_delete (pthread_key_t key);
PTW32_DLLPORT int PTW32_CDECL pthread_setspecific (pthread_key_t key,
const void *value);