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to disable cancelation at the start of a thread's cancelation
run to prevent double cancelation. The main problem
arises if a thread is canceling and then receives a subsequent
async cancel request.
* private.c: Likewise.
* condvar.c: Place pragmas around cleanup_push/pop to turn
off inline optimisation (/Obn where n>0 - MSVC only). Various
optimisation switches in MSVC turn this on, which interferes with
the way that cleanup handlers are run in C++ EH and SEH
code. Application code compiled with inline optimisation must
also wrap cleanup_push/pop blocks with the pragmas, e.g.
#pragma inline_depth(0)
pthread_cleanup_push(...)
...
pthread_cleanup_pop(...)
#pragma inline_depth(8)
* rwlock.c: Likewise.
* mutex.c: Remove attempts to inline some functions.
* signal.c: Modify misleading comment.
tests/
* mutex8: New test.
* mutex8n: New test.
* mutex8e: New test.
* mutex8r: New test.
* cancel6a: New test.
* cancel6d: New test.
* cleanup0.c: Add pragmas for inline optimisation control.
* cleanup1.c: Add pragmas for inline optimisation control.
* cleanup2.c: Add pragmas for inline optimisation control.
* cleanup3.c: Add pragmas for inline optimisation control.
* condvar7.c: Add pragmas for inline optimisation control.
* condvar8.c: Add pragmas for inline optimisation control.
* condvar9.c: Add pragmas for inline optimisation control.
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* mutex.c (pthread_mutex_timedlock): New function suggested by
Alexander Terekhov. The logic required to implement this
properly came from Alexander, with some collaboration
with Thomas Pfaff.
(pthread_mutex_unlock): Wrap the waiters check and sema
post in a critical section to prevent a race with
pthread_mutex_timedlock.
(ptw32_timed_semwait): New function;
returns a special result if the absolute timeout parameter
represents a time already passed when called; used by
pthread_mutex_timedwait(). Have deliberately not reused
the name "ptw32_sem_timedwait" because they are not the same
routine.
* condvar.c (ptw32_cond_timedwait): Use the new sem_timedwait()
instead of ptw32_sem_timedwait(), which now has a different
function. See previous.
* implement.h: Remove prototype for ptw32_sem_timedwait.
See next.
(pthread_mutex_t_): Add critical section element for access
to lock_idx during mutex post-timeout processing.
* semaphore.h (sem_timedwait): See next.
* semaphore.c (sem_timedwait): See next.
* private.c (ptw32_sem_timedwait): Move to semaphore.c
and rename as sem_timedwait().
2002-01-18 Ross Johnson <rpj@special.ise.canberra.edu.au>
* sync.c (pthread_join): Was getting the exit code from the
calling thread rather than the joined thread if
defined(__MINGW32__) && !defined(__MSVCRT__).
2002-01-15 Ross Johnson <rpj@special.ise.canberra.edu.au>
* pthread.h: Unless the build explicitly defines __CLEANUP_SEH,
__CLEANUP_CXX, or __CLEANUP_C, then the build defaults to
__CLEANUP_C style cleanup. This style uses setjmp/longjmp
in the cancelation 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.
* spin.c (pthread_spin_init): Edit renamed function call.
* nonportable.c (pthread_num_processors_np): New.
(pthread_getprocessors_np): Renamed to ptw32_getprocessors
and moved to private.c.
* private.c (pthread_getprocessors): Moved here from
nonportable.c.
* pthread.def (pthread_getprocessors_np): Removed
from export list.
* rwlock.c (pthread_rwlockattr_init): New.
(pthread_rwlockattr_destroy): New.
(pthread_rwlockattr_getpshared): New.
(pthread_rwlockattr_setpshared): New.
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Remove unused autoconf files;
Add the file COPYING, which describes the pthread-win32 license
relative to the FSF LGPL.
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* errno.c: Add _MD precompile condition; thus far
had no effect when using /MD compile option but I
thnk it should be there.
* exit.c: Add __cplusplus to various #if lines;
was compiling SEH code even when VC++ had
C++ compile options.
* private.c: ditto.
* create.c (pthread_create): Add PT_STDCALL macro to
function pointer arg in _beginthread().
* pthread.h: PT_STDCALL really does need to be defined
in both this and impliment.h; don't set it to __cdecl
- this macro is only used to extend function pointer
casting for functions that will be passed as parameters.
(~PThreadCleanup): add cast and group expression.
(_errno): Add _MD compile conditional.
(PtW32NoCatchWarn): Change pragma message.
* implement.h: Move and change PT_STDCALL define.
* need_errno.h: Add _MD to compilation conditional.
* GNUmakefile: Substantial rewrite for new naming
convention; set for nil optimisation (turn it up
when we have a working library build; add target
"fake.a" to build a libpthreadw32.a from the VC++
built DLL pthreadVCE.dll.
* pthread.def (LIBRARY): Don't specify in the .def
file - it is specified on the linker command line
since we now use the same .def file for variously
named .dlls.
* Makefile: Substantial rewrite for new naming
convention; default nmake target only issues a
help message; run nmake with specific target
corresponding to the EH scheme being used.
* README: Update information; add naming convention
explanation.
* ANNOUNCE: Update information.
2000-08-12 Ross Johnson <rpj@special.ise.canberra.edu.au>
* pthread.h: Add compile-time message when using
MSC_VER compiler and C++ EH to warn application
programmers to use PtW32Catch instead of catch(...)
if they want cancelation and pthread_exit to work.
* implement.h: Remove #include <semaphore.h>; we
use our own local semaphore.h.
tests/ChangeLog:
2000-08-13 Ross Johnson <rpj@special.ise.canberra.edu.au>
* condvar3.c: Minor change to eliminate compiler
warning.
* condvar4.c: ditto.
* condvar5.c: ditto.
* condvar6.c: ditto.
* condvar7.c: ditto.
* condvar8.c: ditto.
* condvar9.c: ditto.
* exit1.c: Function needed return statement.
* cleanup1.c: Remove unnecessary printf arg.
* cleanup2.c: Fix cast.
* rwlock6.c: Fix casts.
* exception1.c (PtW32CatchAll): Had the wrong name;
fix casts.
* cancel3.c: Remove unused waitLock variable.
* GNUmakefile: Change library/dll naming; add new tests;
general minor changes.
* Makefile: Change library/dll naming; add targets for
testing each of the two VC++ EH scheme versions;
default target now issues help message; compile warnings
now interpreted as errors to stop the make; add new
tests; restructure to remove prerequisites needed
otherwise.
* README: Updated.
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* cleanup.c (pthread_pop_cleanup): Remove _pthread
prefix from __except and catch keywords; implement.h
now simply undefines _pthread__except and
_pthread_catch if defined; VC++ was not textually
substituting _pthread_catch etc back to catch as
it was redefined; the reason for using the prefixed
version was to make it clear that it was not using
the pthread.h redefined catch keyword.
* private.c (_pthread_threadStart): Ditto.
(_pthread_callUserDestroyRoutines): Ditto.
* implement.h (_pthread__except): Remove #define.
(_pthread_catch): Remove #define.
* GNUmakefile (pthread.a): New target to build
libpthread32.a from pthread.dll using dlltool.
* buildlib.bat: Duplicate cl commands with args to
build C++ EH version of pthread.dll; use of .bat
files is redundant now that nmake compatible
Makefile is included; used as a kludge only now.
* Makefile: Localise some macros and fix up the clean:
target to extend it and work properly.
* CONTRIBUTORS: Add contributors.
* ANNOUNCE: Updated.
* README: Updated.
tests/ChangeLog:
2000-08-10 Ross Johnson <rpj@special.ise.canberra.edu.au>
* eyal1.c (main): Change implicit cast to explicit
cast when passing "print_server" function pointer;
G++ no longer allows implicit func parameter casts.
* cleanup1.c: Remove unused "waitLock".
(main): Fix implicit parameter cast.
* cancel2.c (main): Fix implicit parameter cast.
* cancel4.c (main): Fix implicit parameter cast.
* cancel3.c (main): Fix implicit parameter cast.
* GNUmakefile: Renamed from Makefile; Add missing
cancel1 and cancel2 test targets.
* Makefile: Converted for use with MS nmake.
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* pthread.h: Remove #warning - VC++ doesn't accept it.
2000-08-05 Ross Johnson <rpj@special.ise.canberra.edu.au>
* pthread.h (PtW32CatchAll): Add macro. When compiling
applications using VC++ with C++ EH rather than SEH
'PtW32CatchAll' must be used in place of any 'catch( ... )'
if the application wants pthread cancelation or
pthread_exit() to work.
2000-08-03 Ross Johnson <rpj@special.ise.canberra.edu.au>
* pthread.h: Add a base class Pthread_exception for
library internal exceptions and change the "catch"
re-define macro to use it.
2000-08-02 Ross Johnson <rpj@special.ise.canberra.edu.au>
* GNUmakefile (CFLAGS): Add -mthreads.
Add new targets to generate cpp and asm output.
* sync.c (pthread_join): Remove dead code.
tests:
2000-08-06 Ross Johnson <rpj@special.ise.canberra.edu.au>
* ccl.bat: Add /nologo to remove extraneous output.
* exception1.c (exceptionedThread): Init 'dummy';
put expression into if condition to prevent optimising away;
remove unused variable.
* cancel4.c (mythread): Cast return value to avoid warnings.
* cancel2.c (mythread): Missing #endif.
* condvar9.c (mythread): Cast return value to avoid warnings.
* condvar8.c (mythread): Cast return value to avoid warnings.
* condvar7.c (mythread): Cast return value to avoid warnings.
* cleanup3.c (mythread): Cast return value to avoid warnings.
* cleanup2.c (mythread): Cast return value to avoid warnings.
* cleanup1.c (mythread): Cast return value to avoid warnings.
* condvar5.c (mythread): Cast return value to avoid warnings.
* condvar3.c (mythread): Cast return value to avoid warnings.
* condvar6.c (mythread): Cast return value to avoid warnings.
* condvar4.c (mythread): Cast return value to avoid warnings.
2000-08-05 Ross Johnson <rpj@special.ise.canberra.edu.au>
* cancel2.c: Use PtW32CatchAll macro if defined.
* exception1.c: Use PtW32CatchAll macro if defined.
2000-08-02 Ross Johnson <rpj@special.ise.canberra.edu.au>
* tsd1.c: Fix typecasts of &result [g++ is now very fussy].
* test.h (assert): Return 0's explicitly to allay
g++ errors.
* join2.c: Add explicit typecasts.
* join1.c: Add explicit typecasts.
* join0.c: Add explicit typecasts.
* eyal1.c: Add explicit typecasts.
* count1.c (main): Add type cast to remove g++ parse warning
[gcc-2.95.2 seems to have tightened up on this].
* Makefile (GLANG): Use c++ explicitly.
Remove MSVC sections (was commented out).
Add target to generate cpp output.
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