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authorrpj <rpj>2000-12-28 05:32:07 +0000
committerrpj <rpj>2000-12-28 05:32:07 +0000
commitc94735ecdde19c4de652efd144faeec1a729b1e0 (patch)
tree1780c2bfe14e0b41931d85f6a5ed2f5e2695b6b2 /nonportable.c
parent548fc29a8cc3fd016eba997facc9566af8fd2d75 (diff)
./ChangeLog:
2000-12-28 Ross Johnson <rpj@special.ise.canberra.edu.au> * private.c (ptw32_threadStart): Unhandled exceptions are now passed through to the system to deal with. This is consistent with normal Windows behaviour. C++ applications may use set_terminate() to override the default behaviour which is to call ptw32_terminate(). Ptw32_terminate() cleans up some POSIX thread stuff before calling the system default function which calls abort(). The users termination function should conform to standard C++ semantics which is to not return. It should exit the thread (call pthread_exit()) or exit the application. * private.c (ptw32_terminate): Added as the default set_terminate() function. It calls the system default function after cleaning up some POSIX thread stuff. * implement.h (ptw32_try_enter_critical_section): Move declaration. * global.c (ptw32_try_enter_critical_section): Moved from dll.c. * dll.c: Move process and thread attach/detach code into functions in nonportable.c. * nonportable.c (pthread_win32_process_attach_np): Process attach code from dll.c is now available to static linked applications. * nonportable.c (pthread_win32_process_detach_np): Likewise. * nonportable.c (pthread_win32_thread_attach_np): Likewise. * nonportable.c (pthread_win32_thread_detach_np): Likewise. * pthread.h: Add new non-portable prototypes for static linked applications. * GNUmakefile (OPT): Increase optimisation flag and remove debug info flag. * pthread.def: Add new non-portable exports for static linked applications. 2000-12-11 Ross Johnson <rpj@special.ise.canberra.edu.au> * FAQ: Update Answer 6 re getting a fully working Mingw32 built library. 2000-09-09 Ross Johnson <rpj@special.ise.canberra.edu.au> * pthread.h (ctime_r): Fix arg. ./tests/ChangeLog: 2000-12-28 Ross Johnson <rpj@special.ise.canberra.edu.au> * eyal1.c: Increase thread work loads. * exception2.c: New test. * exception3.c: New test. * Makefile: Add new tests exception2.c and exception3.c. * GNUmakefile: Likewise. 2000-12-11 Ross Johnson <rpj@special.ise.canberra.edu.au> * cleanup3.c: Remove unused variable. * cleanup2.c: Likewise. * exception1.c: Throw an exception rather than use a deliberate zero divide so that catch(...) will handle it under Mingw32. Mingw32 now builds the library correctly to pass all tests - see Thomas Pfaff's detailed instructions re needed changes to Mingw32 in the Pthreads-Win32 FAQ.
Diffstat (limited to 'nonportable.c')
-rw-r--r--nonportable.c208
1 files changed, 208 insertions, 0 deletions
diff --git a/nonportable.c b/nonportable.c
index 1eb5f04..49548dd 100644
--- a/nonportable.c
+++ b/nonportable.c
@@ -64,3 +64,211 @@ pthread_getw32threadhandle_np(pthread_t thread)
{
return (thread != NULL) ? (thread->threadH) : 0;
}
+
+
+/*
+ * Provide pthread_delay_np posix function for NT
+ *
+ * DESCRIPTION
+ *
+ * This routine causes a thread to delay execution for a specific period of time.
+ * This period ends at the current time plus the specified interval. The routine
+ * will not return before the end of the period is reached, but may return an
+ * arbitrary amount of time after the period has gone by. This can be due to
+ * system load, thread priorities, and system timer granularity.
+ *
+ * Specifying an interval of zero (0) seconds and zero (0) nanoseconds is
+ * allowed and can be used to force the thread to give up the processor or to
+ * deliver a pending cancelation request.
+ *
+ * The timespec structure contains the following two fields:
+ *
+ * tv_sec is an integer number of seconds.
+ * tv_nsec is an integer number of nanoseconds.
+ *
+ * Return Values
+ *
+ * If an error condition occurs, this routine returns an integer value indicating
+ * the type of error. Possible return values are as follows:
+ *
+ * 0
+ * Successful completion.
+ * [EINVAL]
+ * The value specified by interval is invalid.
+ *
+ * Example
+ *
+ * The following code segment would wait for 5 and 1/2 seconds
+ *
+ * struct timespec tsWait;
+ * int intRC;
+ *
+ * tsWait.tv_sec = 5;
+ * tsWait.tv_nsec = 500000000L;
+ * intRC = pthread_delay_np(&tsWait);
+ */
+
+int
+pthread_delay_np (struct timespec * interval)
+{
+ DWORD wait_time, secs_in_millisecs, millisecs;
+
+ /*
+ * We are a cancelation point.
+ */
+ pthread_testcancel();
+
+ if (interval->tv_sec < 0 || interval->tv_nsec < 0)
+ {
+ return (EINVAL);
+ }
+
+ secs_in_millisecs = interval->tv_sec * 1000L; /* convert secs to millisecs */
+
+ /*
+ * Pedantically, we're ensuring that we don't return before the time is up,
+ * even by a fraction of a millisecond.
+ */
+ millisecs = (interval->tv_nsec + 999999L) / 1000000L; /* convert nanosecs to millisecs */
+
+ wait_time = secs_in_millisecs + millisecs;
+
+ Sleep(wait_time);
+
+ pthread_testcancel();
+
+ return (0);
+}
+
+
+/*
+ * Handle to kernel32.dll
+ */
+static HINSTANCE ptw32_h_kernel32;
+
+
+BOOL
+pthread_win32_process_attach_np ()
+{
+ BOOL result = TRUE;
+
+ /*
+ * We use this to double-check that TryEnterCriticalSection works.
+ */
+ CRITICAL_SECTION cs;
+
+ result = ptw32_processInitialize ();
+
+ /*
+ * Load KERNEL32 and try to get address of TryEnterCriticalSection
+ */
+ ptw32_h_kernel32 = LoadLibrary(TEXT("KERNEL32.DLL"));
+ ptw32_try_enter_critical_section = (BOOL (PT_STDCALL *)(LPCRITICAL_SECTION))
+
+#if defined(NEED_UNICODE_CONSTS)
+ GetProcAddress(ptw32_h_kernel32,
+ (const TCHAR *)TEXT("TryEnterCriticalSection"));
+#else
+ GetProcAddress(ptw32_h_kernel32,
+ (LPCSTR) "TryEnterCriticalSection");
+#endif
+
+ if (ptw32_try_enter_critical_section != NULL)
+ {
+ InitializeCriticalSection(&cs);
+ if ((*ptw32_try_enter_critical_section)(&cs))
+ {
+ LeaveCriticalSection(&cs);
+ }
+ else
+ {
+ /*
+ * Not really supported (Win98?).
+ */
+ ptw32_try_enter_critical_section = NULL;
+ }
+ DeleteCriticalSection(&cs);
+ }
+
+ if (ptw32_try_enter_critical_section == NULL)
+ {
+ /*
+ * If TryEnterCriticalSection is not being used, then free
+ * the kernel32.dll handle now, rather than leaving it until
+ * DLL_PROCESS_DETACH.
+ *
+ * Note: this is not a pedantic exercise in freeing unused
+ * resources! It is a work-around for a bug in Windows 95
+ * (see microsoft knowledge base article, Q187684) which
+ * does Bad Things when FreeLibrary is called within
+ * the DLL_PROCESS_DETACH code, in certain situations.
+ * Since w95 just happens to be a platform which does not
+ * provide TryEnterCriticalSection, the bug will be
+ * effortlessly avoided.
+ */
+ (void) FreeLibrary(ptw32_h_kernel32);
+ ptw32_h_kernel32 = 0;
+ }
+
+ return result;
+}
+
+BOOL
+pthread_win32_process_detach_np ()
+{
+ if (ptw32_processInitialized)
+ {
+ pthread_t self = (pthread_t) pthread_getspecific (ptw32_selfThreadKey);
+
+ /*
+ * Detached threads have their resources automatically
+ * cleaned up upon exit (others must be 'joined').
+ */
+ if (self != NULL &&
+ self->detachState == PTHREAD_CREATE_DETACHED)
+ {
+ pthread_setspecific (ptw32_selfThreadKey, NULL);
+ ptw32_threadDestroy (self);
+ }
+
+ /*
+ * The DLL is being unmapped into the process's address space
+ */
+ ptw32_processTerminate ();
+
+ if (ptw32_h_kernel32)
+ {
+ (void) FreeLibrary(ptw32_h_kernel32);
+ }
+ }
+
+ return TRUE;
+}
+
+BOOL
+pthread_win32_thread_attach_np ()
+{
+ return TRUE;
+}
+
+BOOL
+pthread_win32_thread_detach_np ()
+{
+ if (ptw32_processInitialized)
+ {
+ pthread_t self = (pthread_t) pthread_getspecific (ptw32_selfThreadKey);
+
+ /*
+ * Detached threads have their resources automatically
+ * cleaned up upon exit (others must be 'joined').
+ */
+ if (self != NULL &&
+ self->detachState == PTHREAD_CREATE_DETACHED)
+ {
+ pthread_setspecific (ptw32_selfThreadKey, NULL);
+ ptw32_threadDestroy (self);
+ }
+ }
+
+ return TRUE;
+} \ No newline at end of file