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authorcvs2svn <>2010-12-18 01:10:07 +0300
committercvs2svn <>2010-12-18 01:10:07 +0300
commit27ab486f12c627f6780cb59815f0a36fe69d1497 (patch)
tree1d25fbce04b6a00d7b7d8f8fd64fa4209b57f42f /winsup/cygwin/thread.cc
parentafeb58b9ae7d03780fd695beeb64203994252c71 (diff)
This commit was manufactured by cvs2svn to create tag 'newlib-1_19_0'.newlib-1_19_0
Sprout from master 2010-12-17 22:10:05 UTC Jeff Johnston <jjohnstn@redhat.com> '' Cherrypick from cygnus 1999-05-03 07:29:06 UTC Richard Henderson <rth@redhat.com> '19990502 sourceware import': README config/mt-d30v config/mt-netware config/mt-ospace etc/add-log.el etc/add-log.vi etc/configbuild.ein etc/configbuild.fig etc/configbuild.jin etc/configbuild.tin etc/configdev.ein etc/configdev.fig etc/configdev.jin etc/configdev.tin makefile.vms Delete: djunpack.bat include/COPYING include/COPYING3 include/ChangeLog include/ChangeLog-9103 include/MAINTAINERS include/alloca-conf.h include/ansidecl.h include/aout/ChangeLog include/aout/adobe.h include/aout/aout64.h include/aout/ar.h include/aout/dynix3.h include/aout/encap.h include/aout/host.h include/aout/hp.h include/aout/hp300hpux.h include/aout/hppa.h include/aout/ranlib.h include/aout/reloc.h include/aout/stab.def include/aout/stab_gnu.h include/aout/sun4.h include/bfdlink.h include/binary-io.h include/bout.h include/cgen/ChangeLog include/cgen/basic-modes.h include/cgen/basic-ops.h include/cgen/bitset.h include/coff/ChangeLog include/coff/ChangeLog-9103 include/coff/alpha.h include/coff/apollo.h include/coff/arm.h include/coff/aux-coff.h include/coff/ecoff.h include/coff/external.h include/coff/go32exe.h include/coff/h8300.h include/coff/h8500.h include/coff/i386.h include/coff/i860.h include/coff/i960.h include/coff/ia64.h include/coff/internal.h include/coff/m68k.h include/coff/m88k.h include/coff/mcore.h include/coff/mips.h include/coff/mipspe.h include/coff/or32.h include/coff/pe.h include/coff/powerpc.h include/coff/rs6000.h include/coff/rs6k64.h include/coff/sh.h include/coff/sparc.h include/coff/sym.h include/coff/symconst.h include/coff/ti.h include/coff/tic30.h include/coff/tic4x.h include/coff/tic54x.h include/coff/tic80.h include/coff/w65.h include/coff/we32k.h include/coff/x86_64.h include/coff/xcoff.h include/coff/z80.h include/coff/z8k.h include/demangle.h include/dis-asm.h include/dwarf2.h 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winsup/w32api/lib/ddk/hal.def winsup/w32api/lib/ddk/hid.def winsup/w32api/lib/ddk/hidparse.def winsup/w32api/lib/ddk/mcd.def winsup/w32api/lib/ddk/ndis.def winsup/w32api/lib/ddk/newdev.def winsup/w32api/lib/ddk/ntoskrnl.def winsup/w32api/lib/ddk/scsiport.def winsup/w32api/lib/ddk/tdi.def winsup/w32api/lib/ddk/usbcamd.def winsup/w32api/lib/ddk/usbcamd2.def winsup/w32api/lib/ddk/videoprt.def winsup/w32api/lib/ddk/win32k.def winsup/w32api/lib/devguid.c winsup/w32api/lib/dhcpcsvc.def winsup/w32api/lib/directx/Makefile.in winsup/w32api/lib/directx/d3d8.def winsup/w32api/lib/directx/d3d9.def winsup/w32api/lib/directx/d3dim.def winsup/w32api/lib/directx/d3drm.def winsup/w32api/lib/directx/d3dx8d.def winsup/w32api/lib/directx/d3dx9d.def winsup/w32api/lib/directx/d3dxof.def winsup/w32api/lib/directx/ddraw.def winsup/w32api/lib/directx/dinput.def winsup/w32api/lib/directx/dinput8.def winsup/w32api/lib/directx/dinput_joy.c winsup/w32api/lib/directx/dinput_joy2.c winsup/w32api/lib/directx/dinput_kbd.c winsup/w32api/lib/directx/dinput_mouse.c winsup/w32api/lib/directx/dinput_mouse2.c winsup/w32api/lib/directx/dinput_private.h winsup/w32api/lib/directx/dmoguids.c winsup/w32api/lib/directx/dplayx.def winsup/w32api/lib/directx/dpnaddr.def winsup/w32api/lib/directx/dpnet.def winsup/w32api/lib/directx/dpnlobby.def winsup/w32api/lib/directx/dpvoice.def winsup/w32api/lib/directx/dsetup.def winsup/w32api/lib/directx/dsound.def winsup/w32api/lib/directx/dxerr.c winsup/w32api/lib/directx/dxerr8.c winsup/w32api/lib/directx/dxerr8w.c winsup/w32api/lib/directx/dxerr9.c winsup/w32api/lib/directx/dxerr9w.c winsup/w32api/lib/directx/dxguid.c winsup/w32api/lib/directx/ksproxy.def winsup/w32api/lib/directx/ksuser.c winsup/w32api/lib/directx/ksuser.def winsup/w32api/lib/directx/msdmo.def winsup/w32api/lib/directx/strmiids.c winsup/w32api/lib/directx/test.c winsup/w32api/lib/dlcapi.def winsup/w32api/lib/dnsapi.def winsup/w32api/lib/docobj-uuid.c winsup/w32api/lib/exdisp-uuid.c winsup/w32api/lib/extras-uuid.c winsup/w32api/lib/faultrep.def winsup/w32api/lib/gdi32.def winsup/w32api/lib/gdiplus.c winsup/w32api/lib/gdiplus.def winsup/w32api/lib/glaux.def winsup/w32api/lib/glu32.def winsup/w32api/lib/hlguids-uuid.c winsup/w32api/lib/hlink-uuid.c winsup/w32api/lib/icmui.def winsup/w32api/lib/igmpagnt.def winsup/w32api/lib/imagehlp.def winsup/w32api/lib/imm32.def winsup/w32api/lib/iphlpapi.def winsup/w32api/lib/kernel32.def winsup/w32api/lib/largeint.c winsup/w32api/lib/lz32.def winsup/w32api/lib/mapi32.def winsup/w32api/lib/mfcuia32.def winsup/w32api/lib/mgmtapi.def winsup/w32api/lib/mlang-uuid.c winsup/w32api/lib/mpr.def winsup/w32api/lib/mprapi.def winsup/w32api/lib/mqrt.def winsup/w32api/lib/msacm32.def winsup/w32api/lib/mscms.def winsup/w32api/lib/mshtml-uuid.c winsup/w32api/lib/msimg32.def winsup/w32api/lib/msvcp60.def winsup/w32api/lib/msvfw32.def winsup/w32api/lib/mswsock.def winsup/w32api/lib/msxml-uuid.c winsup/w32api/lib/nddeapi.def winsup/w32api/lib/netapi32.def winsup/w32api/lib/ntdll.def winsup/w32api/lib/oaidl-uuid.c winsup/w32api/lib/objidl-uuid.c winsup/w32api/lib/objsafe-uuid.c winsup/w32api/lib/ocidl-uuid.c winsup/w32api/lib/odbc32.def winsup/w32api/lib/odbccp32.def winsup/w32api/lib/ole32.def winsup/w32api/lib/oleacc-uuid.c winsup/w32api/lib/oleacc.def winsup/w32api/lib/oleaut32.def winsup/w32api/lib/olecli32.def winsup/w32api/lib/olectlid-uuid.c winsup/w32api/lib/oledlg.def winsup/w32api/lib/oleidl-uuid.c winsup/w32api/lib/olepro32.def winsup/w32api/lib/olesvr32.def winsup/w32api/lib/opengl32.def winsup/w32api/lib/penwin32.def winsup/w32api/lib/pkpd32.def winsup/w32api/lib/power-uuid.c winsup/w32api/lib/powrprof.def winsup/w32api/lib/psapi.def winsup/w32api/lib/quartz.def winsup/w32api/lib/rapi.def winsup/w32api/lib/rasapi32.def winsup/w32api/lib/rasdlg.def winsup/w32api/lib/res.rc winsup/w32api/lib/rpcdce4.def winsup/w32api/lib/rpcns4.def winsup/w32api/lib/rpcrt4.def winsup/w32api/lib/rtm.def winsup/w32api/lib/rtutils.def winsup/w32api/lib/scrnsave.c winsup/w32api/lib/secur32.def winsup/w32api/lib/servprov-uuid.c winsup/w32api/lib/setupapi.def winsup/w32api/lib/shell32.c winsup/w32api/lib/shell32.def winsup/w32api/lib/shfolder.def winsup/w32api/lib/shlwapi.def winsup/w32api/lib/snmpapi.def winsup/w32api/lib/svrapi.def winsup/w32api/lib/tapi32.def winsup/w32api/lib/test.c winsup/w32api/lib/thunk32.def winsup/w32api/lib/unknwn-uuid.c winsup/w32api/lib/url.def winsup/w32api/lib/urlmon-uuid.c winsup/w32api/lib/user32.def winsup/w32api/lib/userenv.def winsup/w32api/lib/usp10.def winsup/w32api/lib/uxtheme.def winsup/w32api/lib/vdmdbg.def winsup/w32api/lib/version.def winsup/w32api/lib/vfw32.mri winsup/w32api/lib/win32spl.def winsup/w32api/lib/wininet.def winsup/w32api/lib/winmm.def winsup/w32api/lib/winspool.def winsup/w32api/lib/winstrm.def winsup/w32api/lib/wldap32.def winsup/w32api/lib/wow32.def winsup/w32api/lib/ws2_32.c winsup/w32api/lib/ws2_32.def winsup/w32api/lib/wsnmp32.def winsup/w32api/lib/wsock32.def winsup/w32api/lib/wst.def winsup/w32api/lib/wtsapi32.def
Diffstat (limited to 'winsup/cygwin/thread.cc')
-rw-r--r--winsup/cygwin/thread.cc3329
1 files changed, 0 insertions, 3329 deletions
diff --git a/winsup/cygwin/thread.cc b/winsup/cygwin/thread.cc
deleted file mode 100644
index 628d1d13f..000000000
--- a/winsup/cygwin/thread.cc
+++ /dev/null
@@ -1,3329 +0,0 @@
-/* thread.cc: Locking and threading module functions
-
- Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
- 2006, 2007, 2008, 2009, 2010 Red Hat, Inc.
-
-This file is part of Cygwin.
-
-This software is a copyrighted work licensed under the terms of the
-Cygwin license. Please consult the file "CYGWIN_LICENSE" for
-details. */
-
-/* Implementation overview and caveats:
-
- Win32 puts some contraints on what can and cannot be implemented. Where
- possible we work around those contrainsts. Where we cannot work around
- the constraints we either pretend to be conformant, or return an error
- code.
-
- Some caveats: PROCESS_SHARED objects, while they pretend to be process
- shared, may not actually work. Some test cases are needed to determine
- win32's behaviour. My suspicion is that the win32 handle needs to be
- opened with different flags for proper operation.
-
- R.Collins, April 2001. */
-
-#ifdef HAVE_CONFIG_H
-#endif
-
-#include "winsup.h"
-#include "miscfuncs.h"
-#include "path.h"
-#include <stdlib.h>
-#include "pinfo.h"
-#include "sigproc.h"
-#include "perprocess.h"
-#include "cygtls.h"
-#include "fhandler.h"
-#include "dtable.h"
-#include "cygheap.h"
-
-extern "C" void __fp_lock_all ();
-extern "C" void __fp_unlock_all ();
-extern "C" int valid_sched_parameters(const struct sched_param *);
-extern "C" int sched_set_thread_priority(HANDLE thread, int priority);
-static inline verifyable_object_state
- verifyable_object_isvalid (void const * objectptr, thread_magic_t magic,
- void *static_ptr1 = NULL,
- void *static_ptr2 = NULL,
- void *static_ptr3 = NULL);
-
-extern int threadsafe;
-
-const pthread_t pthread_mutex::_new_mutex = (pthread_t) 1;
-const pthread_t pthread_mutex::_unlocked_mutex = (pthread_t) 2;
-const pthread_t pthread_mutex::_destroyed_mutex = (pthread_t) 3;
-
-inline bool
-pthread_mutex::no_owner()
-{
- int res;
- if (!owner)
- {
- debug_printf ("NULL owner value");
- res = 1;
- }
- else if (owner == _destroyed_mutex)
- {
- paranoid_printf ("attempt to use destroyed mutex");
- res = 1;
- }
- else if (owner == _new_mutex || owner == _unlocked_mutex)
- res = 1;
- else
- res = 0;
- return res;
-}
-
-#undef __getreent
-extern "C" struct _reent *
-__getreent ()
-{
- return &_my_tls.local_clib;
-}
-
-extern "C" void
-__cygwin_lock_init (_LOCK_T *lock)
-{
- *lock = _LOCK_T_INITIALIZER;
-}
-
-extern "C" void
-__cygwin_lock_init_recursive (_LOCK_T *lock)
-{
- *lock = _LOCK_T_RECURSIVE_INITIALIZER;
-}
-
-extern "C" void
-__cygwin_lock_fini (_LOCK_T *lock)
-{
- pthread_mutex_destroy ((pthread_mutex_t*) lock);
-}
-
-extern "C" void
-__cygwin_lock_lock (_LOCK_T *lock)
-{
- paranoid_printf ("threadcount %d. locking", MT_INTERFACE->threadcount);
- pthread_mutex_lock ((pthread_mutex_t*) lock);
-}
-
-extern "C" int
-__cygwin_lock_trylock (_LOCK_T *lock)
-{
- return pthread_mutex_trylock ((pthread_mutex_t*) lock);
-}
-
-
-extern "C" void
-__cygwin_lock_unlock (_LOCK_T *lock)
-{
- pthread_mutex_unlock ((pthread_mutex_t*) lock);
- paranoid_printf ("threadcount %d. unlocked", MT_INTERFACE->threadcount);
-}
-
-static inline verifyable_object_state
-verifyable_object_isvalid (void const *objectptr, thread_magic_t magic, void *static_ptr1,
- void *static_ptr2, void *static_ptr3)
-{
- myfault efault;
- if (efault.faulted (objectptr))
- return INVALID_OBJECT;
-
- verifyable_object **object = (verifyable_object **) objectptr;
-
- if ((static_ptr1 && *object == static_ptr1) ||
- (static_ptr2 && *object == static_ptr2) ||
- (static_ptr3 && *object == static_ptr3))
- return VALID_STATIC_OBJECT;
- if ((*object)->magic != magic)
- return INVALID_OBJECT;
- return VALID_OBJECT;
-}
-
-/* static members */
-inline bool
-pthread_attr::is_good_object (pthread_attr_t const *attr)
-{
- if (verifyable_object_isvalid (attr, PTHREAD_ATTR_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_condattr::is_good_object (pthread_condattr_t const *attr)
-{
- if (verifyable_object_isvalid (attr, PTHREAD_CONDATTR_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_rwlockattr::is_good_object (pthread_rwlockattr_t const *attr)
-{
- if (verifyable_object_isvalid (attr, PTHREAD_RWLOCKATTR_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_key::is_good_object (pthread_key_t const *key)
-{
- if (verifyable_object_isvalid (key, PTHREAD_KEY_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_mutex::is_good_object (pthread_mutex_t const *mutex)
-{
- if (verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_mutex::is_initializer (pthread_mutex_t const *mutex)
-{
- if (verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC,
- PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP,
- PTHREAD_NORMAL_MUTEX_INITIALIZER_NP,
- PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP) != VALID_STATIC_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_mutex::is_initializer_or_object (pthread_mutex_t const *mutex)
-{
- if (verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC,
- PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP,
- PTHREAD_NORMAL_MUTEX_INITIALIZER_NP,
- PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP) == INVALID_OBJECT)
- return false;
- return true;
-}
-
-/* FIXME: Accommodate PTHREAD_MUTEX_ERRORCHECK */
-inline bool
-pthread_mutex::can_be_unlocked ()
-{
- pthread_t self = pthread::self ();
- /* Check if the mutex is owned by the current thread and can be unlocked.
- * Also check for the ANONYMOUS owner to cover NORMAL mutexes as well. */
- bool res = type == PTHREAD_MUTEX_NORMAL || no_owner ()
- || (recursion_counter == 1 && pthread::equal (owner, self));
- pthread_printf ("recursion_counter %d res %d", recursion_counter, res);
- return res;
-}
-
-inline bool
-pthread_mutexattr::is_good_object (pthread_mutexattr_t const * attr)
-{
- if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-inline bool __attribute__ ((used))
-pthread::is_good_object (pthread_t const *thread)
-{
- if (verifyable_object_isvalid (thread, PTHREAD_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-/* Thread synchronisation */
-inline bool
-pthread_cond::is_good_object (pthread_cond_t const *cond)
-{
- if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_cond::is_initializer (pthread_cond_t const *cond)
-{
- if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC, PTHREAD_COND_INITIALIZER) != VALID_STATIC_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_cond::is_initializer_or_object (pthread_cond_t const *cond)
-{
- if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC, PTHREAD_COND_INITIALIZER) == INVALID_OBJECT)
- return false;
- return true;
-}
-
-/* RW locks */
-inline bool
-pthread_rwlock::is_good_object (pthread_rwlock_t const *rwlock)
-{
- if (verifyable_object_isvalid (rwlock, PTHREAD_RWLOCK_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_rwlock::is_initializer (pthread_rwlock_t const *rwlock)
-{
- if (verifyable_object_isvalid (rwlock, PTHREAD_RWLOCK_MAGIC, PTHREAD_RWLOCK_INITIALIZER) != VALID_STATIC_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-pthread_rwlock::is_initializer_or_object (pthread_rwlock_t const *rwlock)
-{
- if (verifyable_object_isvalid (rwlock, PTHREAD_RWLOCK_MAGIC, PTHREAD_RWLOCK_INITIALIZER) == INVALID_OBJECT)
- return false;
- return true;
-}
-
-inline bool
-semaphore::is_good_object (sem_t const * sem)
-{
- if (verifyable_object_isvalid (sem, SEM_MAGIC) != VALID_OBJECT)
- return false;
- return true;
-}
-
-void
-MTinterface::Init ()
-{
- pthread_mutex::init_mutex ();
- pthread_cond::init_mutex ();
- pthread_rwlock::init_mutex ();
-}
-
-void
-MTinterface::fixup_before_fork ()
-{
- pthread_key::fixup_before_fork ();
-}
-
-/* This function is called from a single threaded process */
-void
-MTinterface::fixup_after_fork ()
-{
- pthread_key::fixup_after_fork ();
-
- threadcount = 0;
- pthread::init_mainthread ();
-
- pthread::fixup_after_fork ();
- pthread_mutex::fixup_after_fork ();
- pthread_cond::fixup_after_fork ();
- pthread_rwlock::fixup_after_fork ();
- semaphore::fixup_after_fork ();
-}
-
-/* pthread calls */
-
-/* static methods */
-void
-pthread::init_mainthread ()
-{
- pthread *thread = _my_tls.tid;
- if (!thread)
- {
- thread = new pthread ();
- if (!thread)
- api_fatal ("failed to create mainthread object");
- }
-
- set_tls_self_pointer (thread);
- thread->thread_id = GetCurrentThreadId ();
- if (!DuplicateHandle (GetCurrentProcess (), GetCurrentThread (),
- GetCurrentProcess (), &thread->win32_obj_id,
- 0, FALSE, DUPLICATE_SAME_ACCESS))
- api_fatal ("failed to create mainthread handle");
- if (!thread->create_cancel_event ())
- api_fatal ("couldn't create cancel event for main thread");
- VerifyHandle (thread->win32_obj_id);
- thread->postcreate ();
-}
-
-pthread *
-pthread::self ()
-{
- pthread *thread = _my_tls.tid;
- if (!thread)
- {
- thread = pthread_null::get_null_pthread ();
- set_tls_self_pointer (thread);
- }
- return thread;
-}
-
-void
-pthread::set_tls_self_pointer (pthread *thread)
-{
- thread->cygtls = &_my_tls;
- _my_tls.tid = thread;
-}
-
-List<pthread> pthread::threads;
-
-/* member methods */
-pthread::pthread ():verifyable_object (PTHREAD_MAGIC), win32_obj_id (0),
- valid (false), suspended (false),
- cancelstate (0), canceltype (0), cancel_event (0),
- joiner (NULL), next (NULL), cleanup_stack (NULL)
-{
- if (this != pthread_null::get_null_pthread ())
- threads.insert (this);
- parent_tls = &_my_tls;
-}
-
-pthread::~pthread ()
-{
- if (win32_obj_id)
- CloseHandle (win32_obj_id);
- if (cancel_event)
- CloseHandle (cancel_event);
-
- if (this != pthread_null::get_null_pthread ())
- threads.remove (this);
-}
-
-bool
-pthread::create_cancel_event ()
-{
- cancel_event = ::CreateEvent (&sec_none_nih, true, false, NULL);
- if (!cancel_event)
- {
- system_printf ("couldn't create cancel event, %E");
- /* we need the event for correct behaviour */
- return false;
- }
- return true;
-}
-
-void
-pthread::precreate (pthread_attr *newattr)
-{
- pthread_mutex *verifyable_mutex_obj = &mutex;
-
- /* already running ? */
- if (win32_obj_id)
- return;
-
- if (newattr)
- {
- attr.joinable = newattr->joinable;
- attr.contentionscope = newattr->contentionscope;
- attr.inheritsched = newattr->inheritsched;
- attr.stacksize = newattr->stacksize;
- }
-
- if (!pthread_mutex::is_good_object (&verifyable_mutex_obj))
- {
- thread_printf ("New thread object access mutex is not valid. this %p",
- this);
- magic = 0;
- return;
- }
- /* Change the mutex type to NORMAL to speed up mutex operations */
- mutex.set_type (PTHREAD_MUTEX_NORMAL);
- if (!create_cancel_event ())
- magic = 0;
-}
-
-bool
-pthread::create (void *(*func) (void *), pthread_attr *newattr,
- void *threadarg)
-{
- bool retval;
-
- precreate (newattr);
- if (!magic)
- return false;
-
- function = func;
- arg = threadarg;
-
- mutex.lock ();
- win32_obj_id = ::CreateThread (&sec_none_nih, attr.stacksize,
- thread_init_wrapper, this, 0, &thread_id);
-
- if (!win32_obj_id)
- {
- thread_printf ("CreateThread failed: this %p, %E", this);
- magic = 0;
- }
- else
- {
- postcreate ();
- while (!cygtls)
- yield ();
- }
- retval = magic;
- mutex.unlock ();
- return retval;
-}
-
-void
-pthread::postcreate ()
-{
- valid = true;
-
- InterlockedIncrement (&MT_INTERFACE->threadcount);
- /* FIXME: set the priority appropriately for system contention scope */
- if (attr.inheritsched == PTHREAD_EXPLICIT_SCHED)
- {
- /* FIXME: set the scheduling settings for the new thread */
- /* sched_thread_setparam (win32_obj_id, attr.schedparam); */
- }
-}
-
-void
-pthread::exit (void *value_ptr)
-{
- class pthread *thread = this;
-
- // run cleanup handlers
- pop_all_cleanup_handlers ();
-
- pthread_key::run_all_destructors ();
-
- mutex.lock ();
- // cleanup if thread is in detached state and not joined
- if (equal (joiner, thread))
- delete this;
- else
- {
- valid = false;
- return_ptr = value_ptr;
- mutex.unlock ();
- }
-
- if (_my_tls.local_clib.__sdidinit < 0)
- _my_tls.local_clib.__sdidinit = 0;
- (_reclaim_reent) (_REENT);
-
- if (InterlockedDecrement (&MT_INTERFACE->threadcount) == 0)
- ::exit (0);
- else
- ExitThread (0);
-}
-
-int
-pthread::cancel ()
-{
- class pthread *thread = this;
- class pthread *self = pthread::self ();
-
- mutex.lock ();
-
- if (!valid)
- {
- mutex.unlock ();
- return 0;
- }
-
- if (canceltype == PTHREAD_CANCEL_DEFERRED ||
- cancelstate == PTHREAD_CANCEL_DISABLE)
- {
- // cancel deferred
- mutex.unlock ();
- SetEvent (cancel_event);
- return 0;
- }
- else if (equal (thread, self))
- {
- mutex.unlock ();
- cancel_self ();
- return 0; // Never reached
- }
-
- // cancel asynchronous
- SuspendThread (win32_obj_id);
- if (WaitForSingleObject (win32_obj_id, 0) == WAIT_TIMEOUT)
- {
- CONTEXT context;
- context.ContextFlags = CONTEXT_CONTROL;
- GetThreadContext (win32_obj_id, &context);
- context.Eip = (DWORD) pthread::static_cancel_self;
- SetThreadContext (win32_obj_id, &context);
- }
- mutex.unlock ();
- ResumeThread (win32_obj_id);
-
- return 0;
-/*
- TODO: insert pthread_testcancel into the required functions
- the required function list is: *indicates done, X indicates not present in cygwin.
-aio_suspend ()
-*close ()
-*creat ()
-fcntl ()
-fsync ()
-getmsg ()
-getpmsg ()
-lockf ()
-mq_receive ()
-mq_send ()
-msgrcv ()
-msgsnd ()
-msync ()
-nanosleep ()
-open ()
-*pause ()
-poll ()
-pread ()
-*pthread_cond_timedwait ()
-*pthread_cond_wait ()
-*pthread_join ()
-*pthread_testcancel ()
-putmsg ()
-putpmsg ()
-pwrite ()
-read ()
-readv ()
-select ()
-*sem_wait ()
-*sigpause ()
-*sigsuspend ()
-sigtimedwait ()
-sigwait ()
-sigwaitinfo ()
-*sleep ()
-*system ()
-tcdrain ()
-*usleep ()
-*wait ()
-*wait3()
-waitid ()
-*waitpid ()
-write ()
-writev ()
-
-the optional list is:
-catclose ()
-catgets ()
-catopen ()
-closedir ()
-closelog ()
-ctermid ()
-dbm_close ()
-dbm_delete ()
-dbm_fetch ()
-dbm_nextkey ()
-dbm_open ()
-dbm_store ()
-dlclose ()
-dlopen ()
-endgrent ()
-endpwent ()
-endutxent ()
-fclose ()
-fcntl ()
-fflush ()
-fgetc ()
-fgetpos ()
-fgets ()
-fgetwc ()
-fgetws ()
-fopen ()
-fprintf ()
-fputc ()
-fputs ()
-fputwc ()
-fputws ()
-fread ()
-freopen ()
-fscanf ()
-fseek ()
-fseeko ()
-fsetpos ()
-ftell ()
-ftello ()
-ftw ()
-fwprintf ()
-fwrite ()
-fwscanf ()
-getc ()
-getc_unlocked ()
-getchar ()
-getchar_unlocked ()
-getcwd ()
-getdate ()
-getgrent ()
-getgrgid ()
-getgrgid_r ()
-getgrnam ()
-getgrnam_r ()
-getlogin ()
-getlogin_r ()
-getpwent ()
-*getpwnam ()
-*getpwnam_r ()
-*getpwuid ()
-*getpwuid_r ()
-gets ()
-getutxent ()
-getutxid ()
-getutxline ()
-getw ()
-getwc ()
-getwchar ()
-getwd ()
-glob ()
-iconv_close ()
-iconv_open ()
-ioctl ()
-lseek ()
-mkstemp ()
-nftw ()
-opendir ()
-openlog ()
-pclose ()
-perror ()
-popen ()
-printf ()
-putc ()
-putc_unlocked ()
-putchar ()
-putchar_unlocked ()
-puts ()
-pututxline ()
-putw ()
-putwc ()
-putwchar ()
-readdir ()
-readdir_r ()
-remove ()
-rename ()
-rewind ()
-rewinddir ()
-scanf ()
-seekdir ()
-semop ()
-setgrent ()
-setpwent ()
-setutxent ()
-strerror ()
-syslog ()
-tmpfile ()
-tmpnam ()
-ttyname ()
-ttyname_r ()
-ungetc ()
-ungetwc ()
-unlink ()
-vfprintf ()
-vfwprintf ()
-vprintf ()
-vwprintf ()
-wprintf ()
-wscanf ()
-
-Note, that for fcntl (), for any value of the cmd argument.
-
-And we must not introduce cancellation points anywhere else that's part of the posix or
-opengroup specs.
- */
-}
-
-void
-pthread::testcancel ()
-{
- if (cancelstate == PTHREAD_CANCEL_DISABLE)
- return;
-
- if (WaitForSingleObject (cancel_event, 0) == WAIT_OBJECT_0)
- cancel_self ();
-}
-
-void
-pthread::static_cancel_self ()
-{
- pthread::self ()->cancel_self ();
-}
-
-DWORD
-cancelable_wait (HANDLE object, DWORD timeout,
- const cw_cancel_action cancel_action,
- const enum cw_sig_wait sig_wait)
-{
- DWORD res;
- DWORD num = 0;
- HANDLE wait_objects[3];
- pthread_t thread = pthread::self ();
-
- /* Do not change the wait order.
- The object must have higher priority than the cancel event,
- because WaitForMultipleObjects will return the smallest index
- if both objects are signaled. */
- wait_objects[num++] = object;
- DWORD cancel_n;
- if (cancel_action == cw_no_cancel || !pthread::is_good_object (&thread) ||
- thread->cancelstate == PTHREAD_CANCEL_DISABLE)
- cancel_n = (DWORD) -1;
- else
- {
- cancel_n = WAIT_OBJECT_0 + num++;
- wait_objects[cancel_n] = thread->cancel_event;
- }
-
- DWORD sig_n;
- if (sig_wait == cw_sig_nosig || &_my_tls != _main_tls)
- sig_n = (DWORD) -1;
- else
- {
- sig_n = WAIT_OBJECT_0 + num++;
- wait_objects[sig_n] = signal_arrived;
- }
-
- while (1)
- {
- res = WaitForMultipleObjects (num, wait_objects, FALSE, timeout);
- if (res == cancel_n)
- {
- if (cancel_action == cw_cancel_self)
- pthread::static_cancel_self ();
- res = WAIT_CANCELED;
- }
- else if (res != sig_n)
- /* all set */;
- else if (sig_wait == cw_sig_eintr)
- res = WAIT_SIGNALED;
- else
- {
- _my_tls.call_signal_handler ();
- continue;
- }
- break;
- }
- return res;
-}
-
-int
-pthread::setcancelstate (int state, int *oldstate)
-{
- int result = 0;
-
- mutex.lock ();
-
- if (state != PTHREAD_CANCEL_ENABLE && state != PTHREAD_CANCEL_DISABLE)
- result = EINVAL;
- else
- {
- if (oldstate)
- *oldstate = cancelstate;
- cancelstate = state;
- }
-
- mutex.unlock ();
-
- return result;
-}
-
-int
-pthread::setcanceltype (int type, int *oldtype)
-{
- int result = 0;
-
- mutex.lock ();
-
- if (type != PTHREAD_CANCEL_DEFERRED && type != PTHREAD_CANCEL_ASYNCHRONOUS)
- result = EINVAL;
- else
- {
- if (oldtype)
- *oldtype = canceltype;
- canceltype = type;
- }
-
- mutex.unlock ();
-
- return result;
-}
-
-void
-pthread::push_cleanup_handler (__pthread_cleanup_handler *handler)
-{
- if (this != self ())
- // TODO: do it?
- api_fatal ("Attempt to push a cleanup handler across threads");
- handler->next = cleanup_stack;
- cleanup_stack = handler;
-}
-
-void
-pthread::pop_cleanup_handler (int const execute)
-{
- if (this != self ())
- // TODO: send a signal or something to the thread ?
- api_fatal ("Attempt to execute a cleanup handler across threads");
-
- mutex.lock ();
-
- if (cleanup_stack != NULL)
- {
- __pthread_cleanup_handler *handler = cleanup_stack;
-
- if (execute)
- (*handler->function) (handler->arg);
- cleanup_stack = handler->next;
- }
-
- mutex.unlock ();
-}
-
-void
-pthread::pop_all_cleanup_handlers ()
-{
- while (cleanup_stack != NULL)
- pop_cleanup_handler (1);
-}
-
-void
-pthread::cancel_self ()
-{
- exit (PTHREAD_CANCELED);
-}
-
-DWORD
-pthread::get_thread_id ()
-{
- return thread_id;
-}
-
-void
-pthread::_fixup_after_fork ()
-{
- /* set thread to not running if it is not the forking thread */
- if (this != pthread::self ())
- {
- magic = 0;
- valid = false;
- win32_obj_id = NULL;
- cancel_event = NULL;
- }
-}
-
-void
-pthread::suspend_except_self ()
-{
- if (valid && this != pthread::self ())
- SuspendThread (win32_obj_id);
-}
-
-void
-pthread::resume ()
-{
- if (valid)
- ResumeThread (win32_obj_id);
-}
-
-/* instance members */
-
-pthread_attr::pthread_attr ():verifyable_object (PTHREAD_ATTR_MAGIC),
-joinable (PTHREAD_CREATE_JOINABLE), contentionscope (PTHREAD_SCOPE_PROCESS),
-inheritsched (PTHREAD_INHERIT_SCHED), stacksize (0)
-{
- schedparam.sched_priority = 0;
-}
-
-pthread_attr::~pthread_attr ()
-{
-}
-
-pthread_condattr::pthread_condattr ():verifyable_object
- (PTHREAD_CONDATTR_MAGIC), shared (PTHREAD_PROCESS_PRIVATE)
-{
-}
-
-pthread_condattr::~pthread_condattr ()
-{
-}
-
-List<pthread_cond> pthread_cond::conds;
-
-/* This is used for cond creation protection within a single process only */
-fast_mutex NO_COPY pthread_cond::cond_initialization_lock;
-
-/* We can only be called once.
- TODO: (no rush) use a non copied memory section to
- hold an initialization flag. */
-void
-pthread_cond::init_mutex ()
-{
- if (!cond_initialization_lock.init ())
- api_fatal ("Could not create win32 Mutex for pthread cond static initializer support.");
-}
-
-pthread_cond::pthread_cond (pthread_condattr *attr) :
- verifyable_object (PTHREAD_COND_MAGIC),
- shared (0), waiting (0), pending (0), sem_wait (NULL),
- mtx_cond(NULL), next (NULL)
-{
- pthread_mutex *verifyable_mutex_obj;
-
- if (attr)
- if (attr->shared != PTHREAD_PROCESS_PRIVATE)
- {
- magic = 0;
- return;
- }
-
- verifyable_mutex_obj = &mtx_in;
- if (!pthread_mutex::is_good_object (&verifyable_mutex_obj))
- {
- thread_printf ("Internal cond mutex is not valid. this %p", this);
- magic = 0;
- return;
- }
- /*
- * Change the mutex type to NORMAL.
- * This mutex MUST be of type normal
- */
- mtx_in.set_type (PTHREAD_MUTEX_NORMAL);
-
- verifyable_mutex_obj = &mtx_out;
- if (!pthread_mutex::is_good_object (&verifyable_mutex_obj))
- {
- thread_printf ("Internal cond mutex is not valid. this %p", this);
- magic = 0;
- return;
- }
- /* Change the mutex type to NORMAL to speed up mutex operations */
- mtx_out.set_type (PTHREAD_MUTEX_NORMAL);
-
- sem_wait = ::CreateSemaphore (&sec_none_nih, 0, LONG_MAX, NULL);
- if (!sem_wait)
- {
- pthread_printf ("CreateSemaphore failed. %E");
- magic = 0;
- return;
- }
-
- conds.insert (this);
-}
-
-pthread_cond::~pthread_cond ()
-{
- if (sem_wait)
- CloseHandle (sem_wait);
-
- conds.remove (this);
-}
-
-void
-pthread_cond::unblock (const bool all)
-{
- unsigned long releaseable;
-
- /*
- * Block outgoing threads (and avoid simultanous unblocks)
- */
- mtx_out.lock ();
-
- releaseable = waiting - pending;
- if (releaseable)
- {
- unsigned long released;
-
- if (!pending)
- {
- /*
- * Block incoming threads until all waiting threads are released.
- */
- mtx_in.lock ();
-
- /*
- * Calculate releaseable again because threads can enter until
- * the semaphore has been taken, but they can not leave, therefore pending
- * is unchanged and releaseable can only get higher
- */
- releaseable = waiting - pending;
- }
-
- released = all ? releaseable : 1;
- pending += released;
- /*
- * Signal threads
- */
- ::ReleaseSemaphore (sem_wait, released, NULL);
- }
-
- /*
- * And let the threads release.
- */
- mtx_out.unlock ();
-}
-
-int
-pthread_cond::wait (pthread_mutex_t mutex, DWORD dwMilliseconds)
-{
- DWORD rv;
-
- mtx_in.lock ();
- if (InterlockedIncrement ((long *)&waiting) == 1)
- mtx_cond = mutex;
- else if (mtx_cond != mutex)
- {
- InterlockedDecrement ((long *)&waiting);
- mtx_in.unlock ();
- return EINVAL;
- }
- mtx_in.unlock ();
-
- /*
- * Release the mutex and wait on semaphore
- */
- ++mutex->condwaits;
- mutex->unlock ();
-
- rv = cancelable_wait (sem_wait, dwMilliseconds, cw_no_cancel_self, cw_sig_eintr);
-
- mtx_out.lock ();
-
- if (rv != WAIT_OBJECT_0)
- {
- /*
- * It might happen that a signal is sent while the thread got canceled
- * or timed out. Try to take one.
- * If the thread gets one than a signal|broadcast is in progress.
- */
- if (WaitForSingleObject (sem_wait, 0) == WAIT_OBJECT_0)
- /*
- * thread got cancelled ot timed out while a signalling is in progress.
- * Set wait result back to signaled
- */
- rv = WAIT_OBJECT_0;
- }
-
- InterlockedDecrement ((long *)&waiting);
-
- if (rv == WAIT_OBJECT_0 && --pending == 0)
- /*
- * All signaled threads are released,
- * new threads can enter Wait
- */
- mtx_in.unlock ();
-
- mtx_out.unlock ();
-
- mutex->lock ();
- --mutex->condwaits;
-
- if (rv == WAIT_CANCELED)
- pthread::static_cancel_self ();
- else if (rv == WAIT_SIGNALED)
- /* SUSv3 states: If a signal is delivered to a thread waiting for a
- condition variable, upon return from the signal handler the thread
- resumes waiting for the condition variable as if it was not
- interrupted, or it shall return zero due to spurious wakeup.
- We opt for the latter choice here. */
- return 0;
- else if (rv == WAIT_TIMEOUT)
- return ETIMEDOUT;
-
- return 0;
-}
-
-void
-pthread_cond::_fixup_after_fork ()
-{
- waiting = pending = 0;
- mtx_cond = NULL;
-
- /* Unlock eventually locked mutexes */
- mtx_in.unlock ();
- mtx_out.unlock ();
-
- sem_wait = ::CreateSemaphore (&sec_none_nih, 0, LONG_MAX, NULL);
- if (!sem_wait)
- api_fatal ("pthread_cond::_fixup_after_fork () failed to recreate win32 semaphore");
-}
-
-pthread_rwlockattr::pthread_rwlockattr ():verifyable_object
- (PTHREAD_RWLOCKATTR_MAGIC), shared (PTHREAD_PROCESS_PRIVATE)
-{
-}
-
-pthread_rwlockattr::~pthread_rwlockattr ()
-{
-}
-
-List<pthread_rwlock> pthread_rwlock::rwlocks;
-
-/* This is used for rwlock creation protection within a single process only */
-fast_mutex NO_COPY pthread_rwlock::rwlock_initialization_lock;
-
-/* We can only be called once.
- TODO: (no rush) use a non copied memory section to
- hold an initialization flag. */
-void
-pthread_rwlock::init_mutex ()
-{
- if (!rwlock_initialization_lock.init ())
- api_fatal ("Could not create win32 Mutex for pthread rwlock static initializer support.");
-}
-
-pthread_rwlock::pthread_rwlock (pthread_rwlockattr *attr) :
- verifyable_object (PTHREAD_RWLOCK_MAGIC),
- shared (0), waiting_readers (0), waiting_writers (0), writer (NULL),
- readers (NULL), readers_mx (), mtx (NULL), cond_readers (NULL), cond_writers (NULL),
- next (NULL)
-{
- pthread_mutex *verifyable_mutex_obj = &mtx;
- pthread_cond *verifyable_cond_obj;
-
- if (!readers_mx.init ())
- {
- thread_printf ("Internal rwlock synchronisation mutex is not valid. this %p", this);
- magic = 0;
- return;
- }
-
- if (attr)
- if (attr->shared != PTHREAD_PROCESS_PRIVATE)
- {
- magic = 0;
- return;
- }
-
- if (!pthread_mutex::is_good_object (&verifyable_mutex_obj))
- {
- thread_printf ("Internal rwlock mutex is not valid. this %p", this);
- magic = 0;
- return;
- }
- /* Change the mutex type to NORMAL to speed up mutex operations */
- mtx.set_type (PTHREAD_MUTEX_NORMAL);
-
- verifyable_cond_obj = &cond_readers;
- if (!pthread_cond::is_good_object (&verifyable_cond_obj))
- {
- thread_printf ("Internal rwlock readers cond is not valid. this %p", this);
- magic = 0;
- return;
- }
-
- verifyable_cond_obj = &cond_writers;
- if (!pthread_cond::is_good_object (&verifyable_cond_obj))
- {
- thread_printf ("Internal rwlock writers cond is not valid. this %p", this);
- magic = 0;
- return;
- }
-
-
- rwlocks.insert (this);
-}
-
-pthread_rwlock::~pthread_rwlock ()
-{
- rwlocks.remove (this);
-}
-
-int
-pthread_rwlock::rdlock ()
-{
- int result = 0;
- struct RWLOCK_READER *reader;
- pthread_t self = pthread::self ();
-
- mtx.lock ();
-
- reader = lookup_reader (self);
- if (reader)
- {
- if (reader->n < ULONG_MAX)
- ++reader->n;
- else
- errno = EAGAIN;
- goto DONE;
- }
-
- reader = new struct RWLOCK_READER;
- if (!reader)
- {
- result = EAGAIN;
- goto DONE;
- }
-
- while (writer || waiting_writers)
- {
- pthread_cleanup_push (pthread_rwlock::rdlock_cleanup, this);
-
- ++waiting_readers;
- cond_readers.wait (&mtx);
- --waiting_readers;
-
- pthread_cleanup_pop (0);
- }
-
- reader->thread = self;
- reader->n = 1;
- add_reader (reader);
-
- DONE:
- mtx.unlock ();
-
- return result;
-}
-
-int
-pthread_rwlock::tryrdlock ()
-{
- int result = 0;
- pthread_t self = pthread::self ();
-
- mtx.lock ();
-
- if (writer || waiting_writers || lookup_reader (self))
- result = EBUSY;
- else
- {
- struct RWLOCK_READER *reader;
-
- reader = lookup_reader (self);
- if (reader && reader->n < ULONG_MAX)
- ++reader->n;
- else if ((reader = new struct RWLOCK_READER))
- {
- reader->thread = self;
- reader->n = 1;
- add_reader (reader);
- }
- else
- result = EAGAIN;
- }
-
- mtx.unlock ();
-
- return result;
-}
-
-int
-pthread_rwlock::wrlock ()
-{
- int result = 0;
- pthread_t self = pthread::self ();
-
- mtx.lock ();
-
- if (writer == self || lookup_reader (self))
- {
- result = EDEADLK;
- goto DONE;
- }
-
- while (writer || readers)
- {
- pthread_cleanup_push (pthread_rwlock::wrlock_cleanup, this);
-
- ++waiting_writers;
- cond_writers.wait (&mtx);
- --waiting_writers;
-
- pthread_cleanup_pop (0);
- }
-
- writer = self;
-
- DONE:
- mtx.unlock ();
-
- return result;
-}
-
-int
-pthread_rwlock::trywrlock ()
-{
- int result = 0;
- pthread_t self = pthread::self ();
-
- mtx.lock ();
-
- if (writer || readers)
- result = EBUSY;
- else
- writer = self;
-
- mtx.unlock ();
-
- return result;
-}
-
-int
-pthread_rwlock::unlock ()
-{
- int result = 0;
- pthread_t self = pthread::self ();
-
- mtx.lock ();
-
- if (writer)
- {
- if (writer != self)
- {
- result = EPERM;
- goto DONE;
- }
-
- writer = NULL;
- }
- else
- {
- struct RWLOCK_READER *reader = lookup_reader (self);
-
- if (!reader)
- {
- result = EPERM;
- goto DONE;
- }
- if (--reader->n > 0)
- goto DONE;
-
- remove_reader (reader);
- delete reader;
- }
-
- release ();
-
- DONE:
- mtx.unlock ();
-
- return result;
-}
-
-void
-pthread_rwlock::add_reader (struct RWLOCK_READER *rd)
-{
- List_insert (readers, rd);
-}
-
-void
-pthread_rwlock::remove_reader (struct RWLOCK_READER *rd)
-{
- List_remove (readers_mx, readers, rd);
-}
-
-struct pthread_rwlock::RWLOCK_READER *
-pthread_rwlock::lookup_reader (pthread_t thread)
-{
- readers_mx.lock ();
-
- struct RWLOCK_READER *cur = readers;
-
- while (cur && cur->thread != thread)
- cur = cur->next;
-
- readers_mx.unlock ();
-
- return cur;
-}
-
-void
-pthread_rwlock::rdlock_cleanup (void *arg)
-{
- pthread_rwlock *rwlock = (pthread_rwlock *) arg;
-
- --(rwlock->waiting_readers);
- rwlock->release ();
- rwlock->mtx.unlock ();
-}
-
-void
-pthread_rwlock::wrlock_cleanup (void *arg)
-{
- pthread_rwlock *rwlock = (pthread_rwlock *) arg;
-
- --(rwlock->waiting_writers);
- rwlock->release ();
- rwlock->mtx.unlock ();
-}
-
-void
-pthread_rwlock::_fixup_after_fork ()
-{
- pthread_t self = pthread::self ();
- struct RWLOCK_READER **temp = &readers;
-
- waiting_readers = 0;
- waiting_writers = 0;
-
- if (!readers_mx.init ())
- api_fatal ("pthread_rwlock::_fixup_after_fork () failed to recreate mutex");
-
- /* Unlock eventually locked mutex */
- mtx.unlock ();
- /*
- * Remove all readers except self
- */
- while (*temp)
- {
- if ((*temp)->thread == self)
- temp = &((*temp)->next);
- else
- {
- struct RWLOCK_READER *cur = *temp;
- *temp = (*temp)->next;
- delete cur;
- }
- }
-}
-
-/* pthread_key */
-/* static members */
-/* This stores pthread_key information across fork() boundaries */
-List<pthread_key> pthread_key::keys;
-
-/* non-static members */
-
-pthread_key::pthread_key (void (*aDestructor) (void *)):verifyable_object (PTHREAD_KEY_MAGIC), destructor (aDestructor)
-{
- tls_index = TlsAlloc ();
- if (tls_index == TLS_OUT_OF_INDEXES)
- magic = 0;
- else
- keys.insert (this);
-}
-
-pthread_key::~pthread_key ()
-{
- /* We may need to make the list code lock the list during operations
- */
- if (magic != 0)
- {
- keys.remove (this);
- TlsFree (tls_index);
- }
-}
-
-void
-pthread_key::_fixup_before_fork ()
-{
- fork_buf = get ();
-}
-
-void
-pthread_key::_fixup_after_fork ()
-{
- tls_index = TlsAlloc ();
- if (tls_index == TLS_OUT_OF_INDEXES)
- api_fatal ("pthread_key::recreate_key_from_buffer () failed to reallocate Tls storage");
- set (fork_buf);
-}
-
-void
-pthread_key::run_destructor ()
-{
- if (destructor)
- {
- void *oldValue = get ();
- if (oldValue)
- {
- set (NULL);
- destructor (oldValue);
- }
- }
-}
-
-/* pshared mutexs */
-
-/* static members */
-
-List<pthread_mutex> pthread_mutex::mutexes;
-
-/* This is used for mutex creation protection within a single process only */
-fast_mutex NO_COPY pthread_mutex::mutex_initialization_lock;
-
-void
-pthread_mutex::init_mutex ()
-{
- if (!mutex_initialization_lock.init ())
- api_fatal ("Could not create win32 Mutex for pthread mutex static initializer support.");
-}
-
-pthread_mutex::pthread_mutex (pthread_mutexattr *attr) :
- verifyable_object (0), /* set magic to zero initially */
- lock_counter (0),
- win32_obj_id (NULL), recursion_counter (0),
- condwaits (0), owner (_new_mutex),
-#ifdef DEBUGGING
- tid (0),
-#endif
- type (PTHREAD_MUTEX_ERRORCHECK),
- pshared (PTHREAD_PROCESS_PRIVATE)
-{
- win32_obj_id = ::CreateEvent (&sec_none_nih, false, false, NULL);
- if (!win32_obj_id)
- return;
- /*attr checked in the C call */
- if (!attr)
- /* handled in the caller */;
- else if (attr->pshared != PTHREAD_PROCESS_SHARED)
- type = attr->mutextype;
- else
- return; /* Not implemented */
-
- magic = PTHREAD_MUTEX_MAGIC;
- mutexes.insert (this);
-}
-
-pthread_mutex::~pthread_mutex ()
-{
- if (win32_obj_id)
- {
- CloseHandle (win32_obj_id);
- win32_obj_id = NULL;
- }
-
- mutexes.remove (this);
- owner = _destroyed_mutex;
- magic = 0;
-}
-
-int
-pthread_mutex::lock ()
-{
- pthread_t self = ::pthread_self ();
- int result = 0;
-
- if (InterlockedIncrement ((long *) &lock_counter) == 1)
- set_owner (self);
- else if (type == PTHREAD_MUTEX_NORMAL /* potentially causes deadlock */
- || !pthread::equal (owner, self))
- {
- cancelable_wait (win32_obj_id, INFINITE, cw_no_cancel, cw_sig_resume);
- set_owner (self);
- }
- else
- {
- InterlockedDecrement ((long *) &lock_counter);
- if (type == PTHREAD_MUTEX_RECURSIVE)
- result = lock_recursive ();
- else
- result = EDEADLK;
- }
-
- pthread_printf ("mutex %p, self %p, owner %p, lock_counter %d, recursion_counter %d",
- this, self, owner, lock_counter, recursion_counter);
- return result;
-}
-
-int
-pthread_mutex::unlock ()
-{
- int res = 0;
- pthread_t self = ::pthread_self ();
- if (type == PTHREAD_MUTEX_NORMAL)
- /* no error checking */;
- else if (no_owner ())
- res = type == PTHREAD_MUTEX_ERRORCHECK ? EINVAL : 0;
- else if (!pthread::equal (owner, self))
- res = EPERM;
- if (!res && recursion_counter > 0 && --recursion_counter == 0)
- /* Don't try to unlock anything if recursion_counter == 0.
- This means the mutex was never locked or that we've forked. */
- {
- owner = (pthread_t) _unlocked_mutex;
-#ifdef DEBUGGING
- tid = 0;
-#endif
- if (InterlockedDecrement ((long *) &lock_counter))
- ::SetEvent (win32_obj_id); // Another thread is waiting
- res = 0;
- }
-
- pthread_printf ("mutex %p, owner %p, self %p, lock_counter %d, recursion_counter %d, type %d, res %d",
- this, owner, self, lock_counter, recursion_counter, type, res);
- return res;
-}
-
-int
-pthread_mutex::trylock ()
-{
- pthread_t self = ::pthread_self ();
- int result = 0;
-
- if (InterlockedCompareExchange ((long *) &lock_counter, 1, 0) == 0)
- set_owner (self);
- else if (type == PTHREAD_MUTEX_RECURSIVE && pthread::equal (owner, self))
- result = lock_recursive ();
- else
- result = EBUSY;
-
- return result;
-}
-
-int
-pthread_mutex::destroy ()
-{
- if (condwaits || trylock ())
- // Do not destroy a condwaited or locked mutex
- return EBUSY;
- else if (recursion_counter > 1)
- {
- // Do not destroy a recursive locked mutex
- recursion_counter--;
- return EBUSY;
- }
-
- delete this;
- return 0;
-}
-
-void
-pthread_mutex::_fixup_after_fork ()
-{
- pthread_printf ("mutex %p", this);
- if (pshared != PTHREAD_PROCESS_PRIVATE)
- api_fatal ("pthread_mutex::_fixup_after_fork () doesn't understand PROCESS_SHARED mutex's");
-
- /* All waiting threads are gone after a fork */
- recursion_counter = 0;
- lock_counter = 0;
- condwaits = 0;
-#ifdef DEBUGGING
- tid = 0xffffffff; /* Don't know the tid after a fork */
-#endif
- win32_obj_id = ::CreateEvent (&sec_none_nih, false, false, NULL);
- if (!win32_obj_id)
- api_fatal ("pthread_mutex::_fixup_after_fork () failed to recreate win32 event for mutex");
-}
-
-pthread_mutexattr::pthread_mutexattr ():verifyable_object (PTHREAD_MUTEXATTR_MAGIC),
-pshared (PTHREAD_PROCESS_PRIVATE), mutextype (PTHREAD_MUTEX_ERRORCHECK)
-{
-}
-
-pthread_mutexattr::~pthread_mutexattr ()
-{
-}
-
-DWORD WINAPI
-pthread::thread_init_wrapper (void *arg)
-{
- pthread *thread = (pthread *) arg;
- set_tls_self_pointer (thread);
-
- thread->mutex.lock ();
-
- // if thread is detached force cleanup on exit
- if (thread->attr.joinable == PTHREAD_CREATE_DETACHED && thread->joiner == NULL)
- thread->joiner = thread;
- _my_tls.sigmask = thread->parent_tls->sigmask;
- thread->mutex.unlock ();
-
- thread_printf ("started thread %p %p %p %p %p %p", arg, &_my_tls.local_clib,
- _impure_ptr, thread, thread->function, thread->arg);
-
- // call the user's thread
- void *ret = thread->function (thread->arg);
-
- thread->exit (ret);
-
- return 0; // just for show. Never returns.
-}
-
-unsigned long
-pthread::getsequence_np ()
-{
- return get_thread_id ();
-}
-
-int
-pthread::create (pthread_t *thread, const pthread_attr_t *attr,
- void *(*start_routine) (void *), void *arg)
-{
- if (attr && !pthread_attr::is_good_object (attr))
- return EINVAL;
-
- *thread = new pthread ();
- if (!(*thread)->create (start_routine, attr ? *attr : NULL, arg))
- {
- delete (*thread);
- *thread = NULL;
- return EAGAIN;
- }
-
- return 0;
-}
-
-int
-pthread::once (pthread_once_t *once_control, void (*init_routine) (void))
-{
- // already done ?
- if (once_control->state)
- return 0;
-
- pthread_mutex_lock (&once_control->mutex);
- /* Here we must set a cancellation handler to unlock the mutex if needed */
- /* but a cancellation handler is not the right thing. We need this in the thread
- *cleanup routine. Assumption: a thread can only be in one pthread_once routine
- *at a time. Stote a mutex_t *in the pthread_structure. if that's non null unlock
- *on pthread_exit ();
- */
- if (!once_control->state)
- {
- init_routine ();
- once_control->state = 1;
- }
- /* Here we must remove our cancellation handler */
- pthread_mutex_unlock (&once_control->mutex);
- return 0;
-}
-
-int
-pthread::cancel (pthread_t thread)
-{
- if (!is_good_object (&thread))
- return ESRCH;
-
- return thread->cancel ();
-}
-
-void
-pthread::atforkprepare ()
-{
- callback *cb = MT_INTERFACE->pthread_prepare;
- while (cb)
- {
- cb->cb ();
- cb = cb->next;
- }
-
- __fp_lock_all ();
-
- MT_INTERFACE->fixup_before_fork ();
-}
-
-void
-pthread::atforkparent ()
-{
- __fp_unlock_all ();
-
- callback *cb = MT_INTERFACE->pthread_parent;
- while (cb)
- {
- cb->cb ();
- cb = cb->next;
- }
-}
-
-void
-pthread::atforkchild ()
-{
- MT_INTERFACE->fixup_after_fork ();
-
- __fp_unlock_all ();
-
- callback *cb = MT_INTERFACE->pthread_child;
- while (cb)
- {
- cb->cb ();
- cb = cb->next;
- }
-}
-
-/* Register a set of functions to run before and after fork.
- prepare calls are called in LI-FC order.
- parent and child calls are called in FI-FC order. */
-int
-pthread::atfork (void (*prepare)(void), void (*parent)(void), void (*child)(void))
-{
- callback *prepcb = NULL, *parentcb = NULL, *childcb = NULL;
- if (prepare)
- {
- prepcb = new callback;
- if (!prepcb)
- return ENOMEM;
- }
- if (parent)
- {
- parentcb = new callback;
- if (!parentcb)
- {
- if (prepcb)
- delete prepcb;
- return ENOMEM;
- }
- }
- if (child)
- {
- childcb = new callback;
- if (!childcb)
- {
- if (prepcb)
- delete prepcb;
- if (parentcb)
- delete parentcb;
- return ENOMEM;
- }
- }
-
- if (prepcb)
- {
- prepcb->cb = prepare;
- List_insert (MT_INTERFACE->pthread_prepare, prepcb);
- }
- if (parentcb)
- {
- parentcb->cb = parent;
- callback **t = &MT_INTERFACE->pthread_parent;
- while (*t)
- t = &(*t)->next;
- /* t = pointer to last next in the list */
- List_insert (*t, parentcb);
- }
- if (childcb)
- {
- childcb->cb = child;
- callback **t = &MT_INTERFACE->pthread_child;
- while (*t)
- t = &(*t)->next;
- /* t = pointer to last next in the list */
- List_insert (*t, childcb);
- }
- return 0;
-}
-
-extern "C" int
-pthread_attr_init (pthread_attr_t *attr)
-{
- if (pthread_attr::is_good_object (attr))
- return EBUSY;
-
- *attr = new pthread_attr;
- if (!pthread_attr::is_good_object (attr))
- {
- delete (*attr);
- *attr = NULL;
- return ENOMEM;
- }
- return 0;
-}
-
-extern "C" int
-pthread_attr_getinheritsched (const pthread_attr_t *attr,
- int *inheritsched)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- *inheritsched = (*attr)->inheritsched;
- return 0;
-}
-
-extern "C" int
-pthread_attr_getschedparam (const pthread_attr_t *attr,
- struct sched_param *param)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- *param = (*attr)->schedparam;
- return 0;
-}
-
-/* From a pure code point of view, this should call a helper in sched.cc,
- to allow for someone adding scheduler policy changes to win32 in the future.
- However that's extremely unlikely, so short and sweet will do us */
-extern "C" int
-pthread_attr_getschedpolicy (const pthread_attr_t *attr, int *policy)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- *policy = SCHED_FIFO;
- return 0;
-}
-
-
-extern "C" int
-pthread_attr_getscope (const pthread_attr_t *attr, int *contentionscope)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- *contentionscope = (*attr)->contentionscope;
- return 0;
-}
-
-extern "C" int
-pthread_attr_setdetachstate (pthread_attr_t *attr, int detachstate)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- if (detachstate < 0 || detachstate > 1)
- return EINVAL;
- (*attr)->joinable = detachstate;
- return 0;
-}
-
-extern "C" int
-pthread_attr_getdetachstate (const pthread_attr_t *attr, int *detachstate)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- *detachstate = (*attr)->joinable;
- return 0;
-}
-
-extern "C" int
-pthread_attr_setinheritsched (pthread_attr_t *attr, int inheritsched)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- if (inheritsched != PTHREAD_INHERIT_SCHED
- && inheritsched != PTHREAD_EXPLICIT_SCHED)
- return ENOTSUP;
- (*attr)->inheritsched = inheritsched;
- return 0;
-}
-
-extern "C" int
-pthread_attr_setschedparam (pthread_attr_t *attr,
- const struct sched_param *param)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- if (!valid_sched_parameters (param))
- return ENOTSUP;
- (*attr)->schedparam = *param;
- return 0;
-}
-
-/* See __pthread_attr_getschedpolicy for some notes */
-extern "C" int
-pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- if (policy != SCHED_FIFO)
- return ENOTSUP;
- return 0;
-}
-
-extern "C" int
-pthread_attr_setscope (pthread_attr_t *attr, int contentionscope)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- if (contentionscope != PTHREAD_SCOPE_SYSTEM
- && contentionscope != PTHREAD_SCOPE_PROCESS)
- return EINVAL;
- /* In future, we may be able to support system scope by escalating the thread
- priority to exceed the priority class. For now we only support PROCESS scope. */
- if (contentionscope != PTHREAD_SCOPE_PROCESS)
- return ENOTSUP;
- (*attr)->contentionscope = contentionscope;
- return 0;
-}
-
-extern "C" int
-pthread_attr_setstacksize (pthread_attr_t *attr, size_t size)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- (*attr)->stacksize = size;
- return 0;
-}
-
-extern "C" int
-pthread_attr_getstacksize (const pthread_attr_t *attr, size_t *size)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- *size = (*attr)->stacksize;
- return 0;
-}
-
-extern "C" int
-pthread_attr_destroy (pthread_attr_t *attr)
-{
- if (!pthread_attr::is_good_object (attr))
- return EINVAL;
- delete (*attr);
- *attr = NULL;
- return 0;
-}
-
-int
-pthread::join (pthread_t *thread, void **return_val)
-{
- pthread_t joiner = self ();
-
- joiner->testcancel ();
-
- // Initialize return val with NULL
- if (return_val)
- *return_val = NULL;
-
- if (!is_good_object (&joiner))
- return EINVAL;
-
- if (!is_good_object (thread))
- return ESRCH;
-
- if (equal (*thread,joiner))
- return EDEADLK;
-
- (*thread)->mutex.lock ();
-
- if ((*thread)->attr.joinable == PTHREAD_CREATE_DETACHED)
- {
- (*thread)->mutex.unlock ();
- return EINVAL;
- }
- else
- {
- (*thread)->joiner = joiner;
- (*thread)->attr.joinable = PTHREAD_CREATE_DETACHED;
- (*thread)->mutex.unlock ();
-
- switch (cancelable_wait ((*thread)->win32_obj_id, INFINITE, cw_no_cancel_self, cw_sig_resume))
- {
- case WAIT_OBJECT_0:
- if (return_val)
- *return_val = (*thread)->return_ptr;
- delete (*thread);
- break;
- case WAIT_CANCELED:
- // set joined thread back to joinable since we got canceled
- (*thread)->joiner = NULL;
- (*thread)->attr.joinable = PTHREAD_CREATE_JOINABLE;
- joiner->cancel_self ();
- // never reached
- break;
- default:
- // should never happen
- return EINVAL;
- }
- }
-
- return 0;
-}
-
-int
-pthread::detach (pthread_t *thread)
-{
- if (!is_good_object (thread))
- return ESRCH;
-
- (*thread)->mutex.lock ();
- if ((*thread)->attr.joinable == PTHREAD_CREATE_DETACHED)
- {
- (*thread)->mutex.unlock ();
- return EINVAL;
- }
-
- // check if thread is still alive
- if ((*thread)->valid && WaitForSingleObject ((*thread)->win32_obj_id, 0) == WAIT_TIMEOUT)
- {
- // force cleanup on exit
- (*thread)->joiner = *thread;
- (*thread)->attr.joinable = PTHREAD_CREATE_DETACHED;
- (*thread)->mutex.unlock ();
- }
- else
- {
- // thread has already terminated.
- (*thread)->mutex.unlock ();
- delete (*thread);
- }
-
- return 0;
-}
-
-int
-pthread::suspend (pthread_t *thread)
-{
- if (!is_good_object (thread))
- return ESRCH;
-
- if ((*thread)->suspended == false)
- {
- (*thread)->suspended = true;
- SuspendThread ((*thread)->win32_obj_id);
- }
-
- return 0;
-}
-
-
-int
-pthread::resume (pthread_t *thread)
-{
- if (!is_good_object (thread))
- return ESRCH;
-
- if ((*thread)->suspended == true)
- ResumeThread ((*thread)->win32_obj_id);
- (*thread)->suspended = false;
-
- return 0;
-}
-
-/* provided for source level compatability.
- See http://www.opengroup.org/onlinepubs/007908799/xsh/pthread_getconcurrency.html
-*/
-extern "C" int
-pthread_getconcurrency ()
-{
- return MT_INTERFACE->concurrency;
-}
-
-/* keep this in sync with sched.cc */
-extern "C" int
-pthread_getschedparam (pthread_t thread, int *policy,
- struct sched_param *param)
-{
- if (!pthread::is_good_object (&thread))
- return ESRCH;
- *policy = SCHED_FIFO;
- /* we don't return the current effective priority, we return the current
- requested priority */
- *param = thread->attr.schedparam;
- return 0;
-}
-
-/* Thread Specific Data */
-extern "C" int
-pthread_key_create (pthread_key_t *key, void (*destructor) (void *))
-{
- *key = new pthread_key (destructor);
-
- if (!pthread_key::is_good_object (key))
- {
- delete (*key);
- *key = NULL;
- return EAGAIN;
- }
- return 0;
-}
-
-extern "C" int
-pthread_key_delete (pthread_key_t key)
-{
- if (!pthread_key::is_good_object (&key))
- return EINVAL;
-
- delete (key);
- return 0;
-}
-
-/* provided for source level compatability. See
-http://www.opengroup.org/onlinepubs/007908799/xsh/pthread_getconcurrency.html
-*/
-extern "C" int
-pthread_setconcurrency (int new_level)
-{
- if (new_level < 0)
- return EINVAL;
- MT_INTERFACE->concurrency = new_level;
- return 0;
-}
-
-/* keep syncronised with sched.cc */
-extern "C" int
-pthread_setschedparam (pthread_t thread, int policy,
- const struct sched_param *param)
-{
- if (!pthread::is_good_object (&thread))
- return ESRCH;
- if (policy != SCHED_FIFO)
- return ENOTSUP;
- if (!param)
- return EINVAL;
- int rv =
- sched_set_thread_priority (thread->win32_obj_id, param->sched_priority);
- if (!rv)
- thread->attr.schedparam.sched_priority = param->sched_priority;
- return rv;
-}
-
-
-extern "C" int
-pthread_setspecific (pthread_key_t key, const void *value)
-{
- if (!pthread_key::is_good_object (&key))
- return EINVAL;
- (key)->set (value);
- return 0;
-}
-
-extern "C" void *
-pthread_getspecific (pthread_key_t key)
-{
- if (!pthread_key::is_good_object (&key))
- return NULL;
-
- return (key)->get ();
-
-}
-
-extern "C" int
-pthread_cond_destroy (pthread_cond_t *cond)
-{
- if (pthread_cond::is_initializer (cond))
- return 0;
- if (!pthread_cond::is_good_object (cond))
- return EINVAL;
-
- /* reads are atomic */
- if ((*cond)->waiting)
- return EBUSY;
-
- delete (*cond);
- *cond = NULL;
-
- return 0;
-}
-
-int
-pthread_cond::init (pthread_cond_t *cond, const pthread_condattr_t *attr)
-{
- pthread_cond_t new_cond;
-
- if (attr && !pthread_condattr::is_good_object (attr))
- return EINVAL;
-
- cond_initialization_lock.lock ();
-
- new_cond = new pthread_cond (attr ? (*attr) : NULL);
- if (!is_good_object (&new_cond))
- {
- delete new_cond;
- cond_initialization_lock.unlock ();
- return EAGAIN;
- }
-
- myfault efault;
- if (efault.faulted ())
- {
- delete new_cond;
- cond_initialization_lock.unlock ();
- return EINVAL;
- }
-
- *cond = new_cond;
- cond_initialization_lock.unlock ();
-
- return 0;
-}
-
-extern "C" int
-pthread_cond_broadcast (pthread_cond_t *cond)
-{
- if (pthread_cond::is_initializer (cond))
- return 0;
- if (!pthread_cond::is_good_object (cond))
- return EINVAL;
-
- (*cond)->unblock (true);
-
- return 0;
-}
-
-extern "C" int
-pthread_cond_signal (pthread_cond_t *cond)
-{
- if (pthread_cond::is_initializer (cond))
- return 0;
- if (!pthread_cond::is_good_object (cond))
- return EINVAL;
-
- (*cond)->unblock (false);
-
- return 0;
-}
-
-static int
-__pthread_cond_dowait (pthread_cond_t *cond, pthread_mutex_t *mutex,
- DWORD waitlength)
-{
- if (!pthread_mutex::is_good_object (mutex))
- return EINVAL;
- if (!(*mutex)->can_be_unlocked ())
- return EPERM;
-
- if (pthread_cond::is_initializer (cond))
- pthread_cond::init (cond, NULL);
- if (!pthread_cond::is_good_object (cond))
- return EINVAL;
-
- return (*cond)->wait (*mutex, waitlength);
-}
-
-extern "C" int
-pthread_cond_timedwait (pthread_cond_t *cond, pthread_mutex_t *mutex,
- const struct timespec *abstime)
-{
- struct timeval tv;
- DWORD waitlength;
-
- myfault efault;
- if (efault.faulted ())
- return EINVAL;
-
- pthread_testcancel ();
-
- /* According to SUSv3, the abstime value must be checked for validity. */
- if (abstime->tv_sec < 0
- || abstime->tv_nsec < 0
- || abstime->tv_nsec > 999999999)
- return EINVAL;
-
- gettimeofday (&tv, NULL);
- /* Check for immediate timeout before converting to microseconds, since
- the resulting value can easily overflow long. This also allows to
- evaluate microseconds directly in DWORD. */
- if (tv.tv_sec > abstime->tv_sec
- || (tv.tv_sec == abstime->tv_sec
- && tv.tv_usec > abstime->tv_nsec / 1000))
- return ETIMEDOUT;
-
- waitlength = (abstime->tv_sec - tv.tv_sec) * 1000;
- waitlength += (abstime->tv_nsec / 1000 - tv.tv_usec) / 1000;
- return __pthread_cond_dowait (cond, mutex, waitlength);
-}
-
-extern "C" int
-pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex)
-{
- pthread_testcancel ();
-
- return __pthread_cond_dowait (cond, mutex, INFINITE);
-}
-
-extern "C" int
-pthread_condattr_init (pthread_condattr_t *condattr)
-{
- if (pthread_condattr::is_good_object (condattr))
- return EBUSY;
-
- *condattr = new pthread_condattr;
- if (!pthread_condattr::is_good_object (condattr))
- {
- delete (*condattr);
- *condattr = NULL;
- return ENOMEM;
- }
- return 0;
-}
-
-extern "C" int
-pthread_condattr_getpshared (const pthread_condattr_t *attr, int *pshared)
-{
- if (!pthread_condattr::is_good_object (attr))
- return EINVAL;
- *pshared = (*attr)->shared;
- return 0;
-}
-
-extern "C" int
-pthread_condattr_setpshared (pthread_condattr_t *attr, int pshared)
-{
- if (!pthread_condattr::is_good_object (attr))
- return EINVAL;
- if ((pshared < 0) || (pshared > 1))
- return EINVAL;
- /* shared cond vars not currently supported */
- if (pshared != PTHREAD_PROCESS_PRIVATE)
- return EINVAL;
- (*attr)->shared = pshared;
- return 0;
-}
-
-extern "C" int
-pthread_condattr_destroy (pthread_condattr_t *condattr)
-{
- if (!pthread_condattr::is_good_object (condattr))
- return EINVAL;
- delete (*condattr);
- *condattr = NULL;
- return 0;
-}
-
-extern "C" int
-pthread_rwlock_destroy (pthread_rwlock_t *rwlock)
-{
- if (pthread_rwlock::is_initializer (rwlock))
- return 0;
- if (!pthread_rwlock::is_good_object (rwlock))
- return EINVAL;
-
- if ((*rwlock)->writer || (*rwlock)->readers ||
- (*rwlock)->waiting_readers || (*rwlock)->waiting_writers)
- return EBUSY;
-
- delete (*rwlock);
- *rwlock = NULL;
-
- return 0;
-}
-
-int
-pthread_rwlock::init (pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr)
-{
- pthread_rwlock_t new_rwlock;
-
- if (attr && !pthread_rwlockattr::is_good_object (attr))
- return EINVAL;
-
- rwlock_initialization_lock.lock ();
-
- new_rwlock = new pthread_rwlock (attr ? (*attr) : NULL);
- if (!is_good_object (&new_rwlock))
- {
- delete new_rwlock;
- rwlock_initialization_lock.unlock ();
- return EAGAIN;
- }
-
- myfault efault;
- if (efault.faulted ())
- {
- delete new_rwlock;
- rwlock_initialization_lock.unlock ();
- return EINVAL;
- }
-
- *rwlock = new_rwlock;
- rwlock_initialization_lock.unlock ();
-
- return 0;
-}
-
-extern "C" int
-pthread_rwlock_rdlock (pthread_rwlock_t *rwlock)
-{
- pthread_testcancel ();
-
- if (pthread_rwlock::is_initializer (rwlock))
- pthread_rwlock::init (rwlock, NULL);
- if (!pthread_rwlock::is_good_object (rwlock))
- return EINVAL;
-
- return (*rwlock)->rdlock ();
-}
-
-extern "C" int
-pthread_rwlock_tryrdlock (pthread_rwlock_t *rwlock)
-{
- if (pthread_rwlock::is_initializer (rwlock))
- pthread_rwlock::init (rwlock, NULL);
- if (!pthread_rwlock::is_good_object (rwlock))
- return EINVAL;
-
- return (*rwlock)->tryrdlock ();
-}
-
-extern "C" int
-pthread_rwlock_wrlock (pthread_rwlock_t *rwlock)
-{
- pthread_testcancel ();
-
- if (pthread_rwlock::is_initializer (rwlock))
- pthread_rwlock::init (rwlock, NULL);
- if (!pthread_rwlock::is_good_object (rwlock))
- return EINVAL;
-
- return (*rwlock)->wrlock ();
-}
-
-extern "C" int
-pthread_rwlock_trywrlock (pthread_rwlock_t *rwlock)
-{
- if (pthread_rwlock::is_initializer (rwlock))
- pthread_rwlock::init (rwlock, NULL);
- if (!pthread_rwlock::is_good_object (rwlock))
- return EINVAL;
-
- return (*rwlock)->trywrlock ();
-}
-
-extern "C" int
-pthread_rwlock_unlock (pthread_rwlock_t *rwlock)
-{
- if (pthread_rwlock::is_initializer (rwlock))
- return 0;
- if (!pthread_rwlock::is_good_object (rwlock))
- return EINVAL;
-
- return (*rwlock)->unlock ();
-}
-
-extern "C" int
-pthread_rwlockattr_init (pthread_rwlockattr_t *rwlockattr)
-{
- if (pthread_rwlockattr::is_good_object (rwlockattr))
- return EBUSY;
-
- *rwlockattr = new pthread_rwlockattr;
- if (!pthread_rwlockattr::is_good_object (rwlockattr))
- {
- delete (*rwlockattr);
- *rwlockattr = NULL;
- return ENOMEM;
- }
- return 0;
-}
-
-extern "C" int
-pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *attr, int *pshared)
-{
- if (!pthread_rwlockattr::is_good_object (attr))
- return EINVAL;
- *pshared = (*attr)->shared;
- return 0;
-}
-
-extern "C" int
-pthread_rwlockattr_setpshared (pthread_rwlockattr_t *attr, int pshared)
-{
- if (!pthread_rwlockattr::is_good_object (attr))
- return EINVAL;
- if ((pshared < 0) || (pshared > 1))
- return EINVAL;
- /* shared rwlock vars not currently supported */
- if (pshared != PTHREAD_PROCESS_PRIVATE)
- return EINVAL;
- (*attr)->shared = pshared;
- return 0;
-}
-
-extern "C" int
-pthread_rwlockattr_destroy (pthread_rwlockattr_t *rwlockattr)
-{
- if (!pthread_rwlockattr::is_good_object (rwlockattr))
- return EINVAL;
- delete (*rwlockattr);
- *rwlockattr = NULL;
- return 0;
-}
-
-/* Thread signal */
-extern "C" int
-pthread_kill (pthread_t thread, int sig)
-{
- // lock myself, for the use of thread2signal
- // two different kills might clash: FIXME
-
- if (!pthread::is_good_object (&thread))
- return EINVAL;
-
- siginfo_t si = {0};
- si.si_signo = sig;
- si.si_code = SI_USER;
- si.si_pid = myself->pid;
- si.si_uid = myself->uid;
- int rval;
- if (!thread->valid)
- rval = ESRCH;
- else if (sig)
- {
- thread->cygtls->set_threadkill ();
- rval = sig_send (NULL, si, thread->cygtls);
- }
- else
- switch (WaitForSingleObject (thread->win32_obj_id, 0))
- {
- case WAIT_TIMEOUT:
- rval = 0;
- break;
- default:
- rval = ESRCH;
- break;
- }
-
- // unlock myself
- return rval;
-}
-
-extern "C" int
-pthread_sigmask (int operation, const sigset_t *set, sigset_t *old_set)
-{
- return handle_sigprocmask (operation, set, old_set, _my_tls.sigmask);
-}
-
-/* ID */
-
-extern "C" int
-pthread_equal (pthread_t t1, pthread_t t2)
-{
- return pthread::equal (t1, t2);
-}
-
-/* Mutexes */
-
-int
-pthread_mutex::init (pthread_mutex_t *mutex,
- const pthread_mutexattr_t *attr,
- const pthread_mutex_t initializer)
-{
- if (attr && !pthread_mutexattr::is_good_object (attr))
- return EINVAL;
-
- mutex_initialization_lock.lock ();
- if (initializer == NULL || pthread_mutex::is_initializer (mutex))
- {
- pthread_mutex_t new_mutex = new pthread_mutex (attr ? (*attr) : NULL);
- if (!is_good_object (&new_mutex))
- {
- delete new_mutex;
- mutex_initialization_lock.unlock ();
- return EAGAIN;
- }
-
- if (!attr && initializer)
- {
- if (initializer == PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
- new_mutex->type = PTHREAD_MUTEX_RECURSIVE;
- else if (initializer == PTHREAD_NORMAL_MUTEX_INITIALIZER_NP)
- new_mutex->type = PTHREAD_MUTEX_NORMAL;
- else if (initializer == PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP)
- new_mutex->type = PTHREAD_MUTEX_ERRORCHECK;
- }
-
- myfault efault;
- if (efault.faulted ())
- {
- delete new_mutex;
- mutex_initialization_lock.unlock ();
- return EINVAL;
- }
-
- *mutex = new_mutex;
- }
- mutex_initialization_lock.unlock ();
- pthread_printf ("*mutex %p, attr %p, initializer %p", *mutex, attr, initializer);
-
- return 0;
-}
-
-extern "C" int
-pthread_mutex_getprioceiling (const pthread_mutex_t *mutex,
- int *prioceiling)
-{
- /* We don't define _POSIX_THREAD_PRIO_PROTECT because we do't currently support
- mutex priorities.
-
- We can support mutex priorities in the future though:
- Store a priority with each mutex.
- When the mutex is optained, set the thread priority as appropriate
- When the mutex is released, reset the thread priority. */
- return ENOSYS;
-}
-
-extern "C" int
-pthread_mutex_lock (pthread_mutex_t *mutex)
-{
- if (pthread_mutex::is_initializer (mutex))
- pthread_mutex::init (mutex, NULL, *mutex);
- if (!pthread_mutex::is_good_object (mutex))
- return EINVAL;
- return (*mutex)->lock ();
-}
-
-extern "C" int
-pthread_mutex_trylock (pthread_mutex_t *mutex)
-{
- if (pthread_mutex::is_initializer (mutex))
- pthread_mutex::init (mutex, NULL, *mutex);
- if (!pthread_mutex::is_good_object (mutex))
- return EINVAL;
- return (*mutex)->trylock ();
-}
-
-extern "C" int
-pthread_mutex_unlock (pthread_mutex_t *mutex)
-{
- if (pthread_mutex::is_initializer (mutex))
- return EPERM;
- if (!pthread_mutex::is_good_object (mutex))
- return EINVAL;
- return (*mutex)->unlock ();
-}
-
-extern "C" int
-pthread_mutex_destroy (pthread_mutex_t *mutex)
-{
- int rv;
-
- if (pthread_mutex::is_initializer (mutex))
- return 0;
- if (!pthread_mutex::is_good_object (mutex))
- return EINVAL;
-
- rv = (*mutex)->destroy ();
- if (rv)
- return rv;
-
- *mutex = NULL;
- return 0;
-}
-
-extern "C" int
-pthread_mutex_setprioceiling (pthread_mutex_t *mutex, int prioceiling,
- int *old_ceiling)
-{
- return ENOSYS;
-}
-
-/* Win32 doesn't support mutex priorities - see __pthread_mutex_getprioceiling
- for more detail */
-extern "C" int
-pthread_mutexattr_getprotocol (const pthread_mutexattr_t *attr,
- int *protocol)
-{
- if (!pthread_mutexattr::is_good_object (attr))
- return EINVAL;
- return ENOSYS;
-}
-
-extern "C" int
-pthread_mutexattr_getpshared (const pthread_mutexattr_t *attr,
- int *pshared)
-{
- if (!pthread_mutexattr::is_good_object (attr))
- return EINVAL;
- *pshared = (*attr)->pshared;
- return 0;
-}
-
-extern "C" int
-pthread_mutexattr_gettype (const pthread_mutexattr_t *attr, int *type)
-{
- if (!pthread_mutexattr::is_good_object (attr))
- return EINVAL;
- *type = (*attr)->mutextype;
- return 0;
-}
-
-/* FIXME: write and test process shared mutex's. */
-extern "C" int
-pthread_mutexattr_init (pthread_mutexattr_t *attr)
-{
- if (pthread_mutexattr::is_good_object (attr))
- return EBUSY;
-
- *attr = new pthread_mutexattr ();
- if (!pthread_mutexattr::is_good_object (attr))
- {
- delete (*attr);
- *attr = NULL;
- return ENOMEM;
- }
- return 0;
-}
-
-extern "C" int
-pthread_mutexattr_destroy (pthread_mutexattr_t *attr)
-{
- if (!pthread_mutexattr::is_good_object (attr))
- return EINVAL;
- delete (*attr);
- *attr = NULL;
- return 0;
-}
-
-
-/* Win32 doesn't support mutex priorities */
-extern "C" int
-pthread_mutexattr_setprotocol (pthread_mutexattr_t *attr, int protocol)
-{
- if (!pthread_mutexattr::is_good_object (attr))
- return EINVAL;
- return ENOSYS;
-}
-
-/* Win32 doesn't support mutex priorities */
-extern "C" int
-pthread_mutexattr_setprioceiling (pthread_mutexattr_t *attr,
- int prioceiling)
-{
- if (!pthread_mutexattr::is_good_object (attr))
- return EINVAL;
- return ENOSYS;
-}
-
-extern "C" int
-pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *attr,
- int *prioceiling)
-{
- if (!pthread_mutexattr::is_good_object (attr))
- return EINVAL;
- return ENOSYS;
-}
-
-extern "C" int
-pthread_mutexattr_setpshared (pthread_mutexattr_t *attr, int pshared)
-{
- if (!pthread_mutexattr::is_good_object (attr))
- return EINVAL;
- /* we don't use pshared for anything as yet. We need to test PROCESS_SHARED
- *functionality
- */
- if (pshared != PTHREAD_PROCESS_PRIVATE)
- return EINVAL;
- (*attr)->pshared = pshared;
- return 0;
-}
-
-/* see pthread_mutex_gettype */
-extern "C" int
-pthread_mutexattr_settype (pthread_mutexattr_t *attr, int type)
-{
- if (!pthread_mutexattr::is_good_object (attr))
- return EINVAL;
-
- switch (type)
- {
- case PTHREAD_MUTEX_ERRORCHECK:
- case PTHREAD_MUTEX_RECURSIVE:
- case PTHREAD_MUTEX_NORMAL:
- (*attr)->mutextype = type;
- break;
- default:
- return EINVAL;
- }
-
- return 0;
-}
-
-/* Semaphores */
-
-List<semaphore> semaphore::semaphores;
-
-semaphore::semaphore (int pshared, unsigned int value)
-: verifyable_object (SEM_MAGIC),
- shared (pshared),
- currentvalue (value),
- fd (-1),
- hash (0ULL),
- sem (NULL)
-{
- SECURITY_ATTRIBUTES sa = (pshared != PTHREAD_PROCESS_PRIVATE)
- ? sec_all : sec_none_nih;
- this->win32_obj_id = ::CreateSemaphore (&sa, value, LONG_MAX, NULL);
- if (!this->win32_obj_id)
- magic = 0;
-
- semaphores.insert (this);
-}
-
-semaphore::semaphore (unsigned long long shash, LUID sluid, int sfd,
- sem_t *ssem, int oflag, mode_t mode, unsigned int value)
-: verifyable_object (SEM_MAGIC),
- shared (PTHREAD_PROCESS_SHARED),
- currentvalue (value), /* Unused for named semaphores. */
- fd (sfd),
- hash (shash),
- luid (sluid),
- sem (ssem)
-{
- char name[MAX_PATH];
-
- __small_sprintf (name, "semaphore/%016X%08x%08x",
- hash, luid.HighPart, luid.LowPart);
- this->win32_obj_id = ::CreateSemaphore (&sec_all, value, LONG_MAX, name);
- if (!this->win32_obj_id)
- magic = 0;
- if (GetLastError () == ERROR_ALREADY_EXISTS && (oflag & O_EXCL))
- {
- __seterrno ();
- CloseHandle (this->win32_obj_id);
- magic = 0;
- }
-
- semaphores.insert (this);
-}
-
-semaphore::~semaphore ()
-{
- if (win32_obj_id)
- CloseHandle (win32_obj_id);
-
- semaphores.remove (this);
-}
-
-void
-semaphore::_post ()
-{
- if (ReleaseSemaphore (win32_obj_id, 1, &currentvalue))
- currentvalue++;
-}
-
-int
-semaphore::_getvalue (int *sval)
-{
- long val;
-
- switch (WaitForSingleObject (win32_obj_id, 0))
- {
- case WAIT_OBJECT_0:
- ReleaseSemaphore (win32_obj_id, 1, &val);
- *sval = val + 1;
- break;
- case WAIT_TIMEOUT:
- *sval = 0;
- break;
- default:
- set_errno (EAGAIN);
- return -1;
- }
- return 0;
-}
-
-int
-semaphore::_trywait ()
-{
- /* FIXME: signals should be able to interrupt semaphores...
- We probably need WaitForMultipleObjects here. */
- if (WaitForSingleObject (win32_obj_id, 0) == WAIT_TIMEOUT)
- {
- set_errno (EAGAIN);
- return -1;
- }
- currentvalue--;
- return 0;
-}
-
-int
-semaphore::_timedwait (const struct timespec *abstime)
-{
- struct timeval tv;
- long waitlength;
-
- myfault efault;
- if (efault.faulted ())
- {
- /* According to SUSv3, abstime need not be checked for validity,
- if the semaphore can be locked immediately. */
- if (!_trywait ())
- return 0;
- set_errno (EINVAL);
- return -1;
- }
-
- gettimeofday (&tv, NULL);
- waitlength = abstime->tv_sec * 1000 + abstime->tv_nsec / (1000 * 1000);
- waitlength -= tv.tv_sec * 1000 + tv.tv_usec / 1000;
- if (waitlength < 0)
- waitlength = 0;
- switch (cancelable_wait (win32_obj_id, waitlength, cw_cancel_self, cw_sig_eintr))
- {
- case WAIT_OBJECT_0:
- currentvalue--;
- break;
- case WAIT_SIGNALED:
- set_errno (EINTR);
- return -1;
- case WAIT_TIMEOUT:
- set_errno (ETIMEDOUT);
- return -1;
- default:
- pthread_printf ("cancelable_wait failed. %E");
- __seterrno ();
- return -1;
- }
- return 0;
-}
-
-int
-semaphore::_wait ()
-{
- switch (cancelable_wait (win32_obj_id, INFINITE, cw_cancel_self, cw_sig_eintr))
- {
- case WAIT_OBJECT_0:
- currentvalue--;
- break;
- case WAIT_SIGNALED:
- set_errno (EINTR);
- return -1;
- default:
- pthread_printf ("cancelable_wait failed. %E");
- break;
- }
- return 0;
-}
-
-void
-semaphore::_fixup_after_fork ()
-{
- if (shared == PTHREAD_PROCESS_PRIVATE)
- {
- pthread_printf ("sem %x", this);
- /* FIXME: duplicate code here and in the constructor. */
- this->win32_obj_id = ::CreateSemaphore (&sec_none_nih, currentvalue,
- LONG_MAX, NULL);
- if (!win32_obj_id)
- api_fatal ("failed to create new win32 semaphore, error %d");
- }
-}
-
-void
-semaphore::_terminate ()
-{
- int _sem_close (sem_t *, bool);
-
- if (sem)
- _sem_close (sem, false);
-}
-
-/* static members */
-
-int
-semaphore::init (sem_t *sem, int pshared, unsigned int value)
-{
- /* opengroup calls this undefined */
- if (is_good_object (sem))
- return EBUSY;
-
- if (value > SEM_VALUE_MAX)
- return EINVAL;
-
- *sem = new semaphore (pshared, value);
-
- if (!is_good_object (sem))
- {
- delete (*sem);
- *sem = NULL;
- return EAGAIN;
- }
- return 0;
-}
-
-int
-semaphore::destroy (sem_t *sem)
-{
- if (!is_good_object (sem))
- return EINVAL;
-
- /* It's invalid to destroy a semaphore not opened with sem_init. */
- if ((*sem)->fd != -1)
- return EINVAL;
-
- /* FIXME - new feature - test for busy against threads... */
-
- delete (*sem);
- *sem = NULL;
- return 0;
-}
-
-int
-semaphore::close (sem_t *sem)
-{
- if (!is_good_object (sem))
- return EINVAL;
-
- /* It's invalid to close a semaphore not opened with sem_open. */
- if ((*sem)->fd == -1)
- return EINVAL;
-
- delete (*sem);
- delete sem;
- return 0;
-}
-
-sem_t *
-semaphore::open (unsigned long long hash, LUID luid, int fd, int oflag,
- mode_t mode, unsigned int value, bool &wasopen)
-{
- if (value > SEM_VALUE_MAX)
- {
- set_errno (EINVAL);
- return NULL;
- }
-
- /* sem_open is supposed to return the same pointer, if the same named
- semaphore is opened multiple times in the same process, as long as
- the semaphore hasn't been closed or unlinked in the meantime. */
- semaphores.mx.lock ();
- for (semaphore *sema = semaphores.head; sema; sema = sema->next)
- if (sema->fd >= 0 && sema->hash == hash
- && sema->luid.HighPart == luid.HighPart
- && sema->luid.LowPart == sema->luid.LowPart)
- {
- wasopen = true;
- semaphores.mx.unlock ();
- return sema->sem;
- }
- semaphores.mx.unlock ();
-
- wasopen = false;
- sem_t *sem = new sem_t;
- if (!sem)
- {
- set_errno (ENOMEM);
- return NULL;
- }
-
- *sem = new semaphore (hash, luid, fd, sem, oflag, mode, value);
-
- if (!is_good_object (sem))
- {
- delete *sem;
- delete sem;
- return NULL;
- }
- return sem;
-}
-
-int
-semaphore::wait (sem_t *sem)
-{
- pthread_testcancel ();
-
- if (!is_good_object (sem))
- {
- set_errno (EINVAL);
- return -1;
- }
-
- return (*sem)->_wait ();
-}
-
-int
-semaphore::trywait (sem_t *sem)
-{
- if (!is_good_object (sem))
- {
- set_errno (EINVAL);
- return -1;
- }
-
- return (*sem)->_trywait ();
-}
-
-int
-semaphore::timedwait (sem_t *sem, const struct timespec *abstime)
-{
- if (!is_good_object (sem))
- {
- set_errno (EINVAL);
- return -1;
- }
-
- return (*sem)->_timedwait (abstime);
-}
-
-int
-semaphore::post (sem_t *sem)
-{
- if (!is_good_object (sem))
- {
- set_errno (EINVAL);
- return -1;
- }
-
- (*sem)->_post ();
- return 0;
-}
-
-int
-semaphore::getvalue (sem_t *sem, int *sval)
-{
- myfault efault;
- if (efault.faulted () || !is_good_object (sem))
- {
- set_errno (EINVAL);
- return -1;
- }
-
- return (*sem)->_getvalue (sval);
-}
-
-int
-semaphore::getinternal (sem_t *sem, int *sfd, unsigned long long *shash,
- LUID *sluid, unsigned int *sval)
-{
- myfault efault;
- if (efault.faulted () || !is_good_object (sem))
- {
- set_errno (EINVAL);
- return -1;
- }
- if ((*sfd = (*sem)->fd) < 0)
- {
- set_errno (EINVAL);
- return -1;
- }
- *shash = (*sem)->hash;
- *sluid = (*sem)->luid;
- /* POSIX defines the value in calls to sem_init/sem_open as unsigned, but
- the sem_getvalue gets a pointer to int to return the value. Go figure! */
- return (*sem)->_getvalue ((int *)sval);
-}
-
-/* pthread_null */
-pthread *
-pthread_null::get_null_pthread ()
-{
- /* because of weird entry points */
- _instance.magic = 0;
- return &_instance;
-}
-
-pthread_null::pthread_null ()
-{
- attr.joinable = PTHREAD_CREATE_DETACHED;
- /* Mark ourselves as invalid */
- magic = 0;
-}
-
-pthread_null::~pthread_null ()
-{
-}
-
-bool
-pthread_null::create (void *(*)(void *), pthread_attr *, void *)
-{
- return true;
-}
-
-void
-pthread_null::exit (void *value_ptr)
-{
- _my_tls.remove (INFINITE);
- ExitThread (0);
-}
-
-int
-pthread_null::cancel ()
-{
- return 0;
-}
-
-void
-pthread_null::testcancel ()
-{
-}
-
-int
-pthread_null::setcancelstate (int state, int *oldstate)
-{
- return EINVAL;
-}
-
-int
-pthread_null::setcanceltype (int type, int *oldtype)
-{
- return EINVAL;
-}
-
-void
-pthread_null::push_cleanup_handler (__pthread_cleanup_handler *handler)
-{
-}
-
-void
-pthread_null::pop_cleanup_handler (int const execute)
-{
-}
-
-unsigned long
-pthread_null::getsequence_np ()
-{
- return 0;
-}
-
-pthread_null pthread_null::_instance;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-17 15:08:02 +0300