From 0749394433f301cccd22d280cee1dd760b72e876 Mon Sep 17 00:00:00 2001 From: rpj Date: Mon, 28 Dec 1998 23:01:00 +0000 Subject: With this update I'm able to build the library and build and run the tsd1.c test successfully using buildlib.bat and build.bat scripts. I not convinced that I understand the relationships between "__cplusplus" and "_WIN32" and the MS compiler, particularly in pthread.h where pthread_cleanup_push etc is defined. In particular, I have assumed that the __try/__finally blocks are only available if _WIN32 and __cplusplus are defined. I suspect this is wrong. Tue Dec 29 13:11:16 1998 Ross Johnson * implement.h: Move the following struct definitions to pthread.h: pthread_t_, pthread_attr_t_, pthread_mutex_t_, pthread_mutex_t_, pthread_mutexattr_t_, pthread_key_t_, pthread_cond_t_, pthread_condattr_t_, pthread_once_t_. * pthread.h: Add "_" prefix to pthread_push_cleanup and pthread_pop_cleanup internal routines, and associated struct and typedefs. * buildlib.bat: Add compile command for semaphore.c * pthread.def: Comment out pthread_atfork routine name. Now unimplemented. * tsd.c (pthread_setspecific): Rename tkAssocCreate to _pthread_tkAssocCreate. (pthread_key_delete): Rename tkAssocDestroy to _pthread_tkAssocDestroy. * sync.c (pthread_join): Rename threadDestroy to _pthread_threadDestroy * sched.c (is_attr): attr is now **attr (was *attr), so add extra NULL pointer test. (pthread_attr_setschedparam): Increase redirection for attr which is now a **. (pthread_attr_getschedparam): Ditto. (pthread_setschedparam): Change thread validation and rename "thread" Win32 thread Handle element name to match John Bossom's version. (pthread_getschedparam): Ditto. * private.c (_pthread_threadDestroy): Rename call to callUserDestroyRoutines() as _pthread_callUserDestroyRoutines() * misc.c: Add #include "implement.h". * dll.c: Remove defined(KLUDGE) wrapped code. * fork.c: Remove redefinition of ENOMEM. Remove pthread_atfork() and fork() with #if 0/#endif. * create.c (pthread_create): Rename threadStart and threadDestroy calls to _pthread_threadStart and _pthread_threadDestroy. * implement.h: Rename "detachedstate" to "detachstate". * attr.c: Rename "detachedstate" to "detachstate". Mon Dec 28 09:54:39 1998 Ross Johnson * pthread.h (pthread_attr_t_): Change to *pthread_attr_t. * attr.c (pthread_attr_setstacksize): Merge with John Bossom's version. (pthread_attr_getstacksize): Merge with John Bossom's version. (pthread_attr_setstackaddr): Merge with John Bossom's version. (pthread_attr_getstackaddr): Merge with John Bossom's version. (pthread_attr_init): Merge with John Bossom's version. (pthread_attr_destroy): Merge with John Bossom's version. (pthread_attr_getdetachstate): Merge with John Bossom's version. (pthread_attr_setdetachstate): Merge with John Bossom's version. (is_attr): attr is now **attr (was *attr), so add extra NULL pointer test. * implement.h (pthread_attr_t_): Add and rename elements in JEB's version to correspond to original, so that it can be used with original attr routines. * pthread.h: Add #endif at end which was truncated in merging. --- cleanup.c | 135 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) (limited to 'cleanup.c') diff --git a/cleanup.c b/cleanup.c index 0a5ae3f..b0817d7 100644 --- a/cleanup.c +++ b/cleanup.c @@ -12,6 +12,139 @@ #include "pthread.h" #include "implement.h" +/* + * Code contributed by John E. Bossom . + */ + +_pthread_cleanup_t * +_pthread_pop_cleanup (int execute) + /* + * ------------------------------------------------------ + * DOCPUBLIC + * This function pops the most recently pushed cleanup + * handler. If execute is nonzero, then the cleanup handler + * is executed if non-null. + * + * PARAMETERS + * execute + * if nonzero, execute the cleanup handler + * + * + * DESCRIPTION + * This function pops the most recently pushed cleanup + * handler. If execute is nonzero, then the cleanup handler + * is executed if non-null. + * NOTE: specify 'execute' as nonzero to avoid duplication + * of common cleanup code. + * + * RESULTS + * N/A + * + * ------------------------------------------------------ + */ +{ + _pthread_cleanup_t *cleanup; + + cleanup = pthread_getspecific (_pthread_cleanupKey); + + if (cleanup != NULL) + { + if (execute && (cleanup->routine != NULL)) + { + +#ifdef _WIN32 + + __try + { + /* + * Run the caller's cleanup routine. + */ + (*cleanup->routine) (cleanup->arg); + } + __except (EXCEPTION_EXECUTE_HANDLER) + { + /* + * A system unexpected exception had occurred + * running the user's cleanup routine. + * We get control back within this block. + */ + } + } + +#else + + /* + * Run the caller's cleanup routine. + */ + (*cleanup->routine) (cleanup->arg); + +#endif /* _WIN32 */ + + pthread_setspecific (_pthread_cleanupKey, cleanup->prev); + } + + return (cleanup); + +} /* _pthread_pop_cleanup */ + + +void +_pthread_push_cleanup (_pthread_cleanup_t * cleanup, + void (*routine) (void *), + void *arg) + /* + * ------------------------------------------------------ + * DOCPUBLIC + * This function pushes a new cleanup handler onto the thread's stack + * of cleanup handlers. Each cleanup handler pushed onto the stack is + * popped and invoked with the argument 'arg' when + * a) the thread exits by calling 'pthread_exit', + * b) when the thread acts on a cancellation request, + * c) or when the thrad calls pthread_cleanup_pop with a nonzero + * 'execute' argument + * + * PARAMETERS + * cleanup + * a pointer to an instance of pthread_cleanup_t, + * + * routine + * pointer to a cleanup handler, + * + * arg + * parameter to be passed to the cleanup handler + * + * + * DESCRIPTION + * This function pushes a new cleanup handler onto the thread's stack + * of cleanup handlers. Each cleanup handler pushed onto the stack is + * popped and invoked with the argument 'arg' when + * a) the thread exits by calling 'pthread_exit', + * b) when the thread acts on a cancellation request, + * c) or when the thrad calls pthread_cleanup_pop with a nonzero + * 'execute' argument + * NOTE: pthread_push_cleanup, pthread_pop_cleanup must be paired + * in the same lexical scope. + * + * RESULTS + * pthread_cleanup_t * + * pointer to the previous cleanup + * + * ------------------------------------------------------ + */ +{ + cleanup->routine = routine; + cleanup->arg = arg; + cleanup->prev = pthread_getspecific (_pthread_cleanupKey); + + pthread_setspecific (_pthread_cleanupKey, (void *) cleanup); + +} /* _pthread_push_cleanup */ + +/* */ + + +#if 0 /* Pre Bossom */ + int _pthread_handler_push(int stack, int poporder, @@ -214,3 +347,5 @@ _pthread_destructor_run_all() break; } } + +#endif /* Pre Bossom */ -- cgit v1.2.3