From 6a8ccc95528f5e86a8770ed15ce89609b5b3dee9 Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Wed, 18 May 2016 18:41:24 +0200 Subject: remove linuxthreads.new, rename linuxthreads.old Linuxthreads.new isn't really useful with the existence of NPTL/TLS for well supported architectures. There is no reason to use LT.new for ARM/MIPS or other architectures supporting NPTL/TLS. It is not available for noMMU architectures like Blackfin or FR-V. To simplify the live of the few uClibc-ng developers, LT.new is removed and LT.old is renamed to LT. LINUXTHREADS_OLD -> UCLIBC_HAS_LINUXTHREADS --- libpthread/linuxthreads/cancel.c | 90 ++++++++++++++++------------------------ 1 file changed, 36 insertions(+), 54 deletions(-) (limited to 'libpthread/linuxthreads/cancel.c') diff --git a/libpthread/linuxthreads/cancel.c b/libpthread/linuxthreads/cancel.c index 21b8d900c..392d1d586 100644 --- a/libpthread/linuxthreads/cancel.c +++ b/libpthread/linuxthreads/cancel.c @@ -19,6 +19,13 @@ #include "internals.h" #include "spinlock.h" #include "restart.h" +#ifdef __UCLIBC_HAS_RPC__ +#include +extern void __rpc_thread_destroy(void); +#endif +#include + +#include #ifdef _STACK_GROWS_DOWN # define FRAME_LEFT(frame, other) ((char *) frame >= (char *) other) @@ -28,8 +35,10 @@ # error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP" #endif +libpthread_hidden_proto(pthread_setcancelstate) +libpthread_hidden_proto(pthread_setcanceltype) -int __pthread_setcancelstate(int state, int * oldstate) +int pthread_setcancelstate(int state, int * oldstate) { pthread_descr self = thread_self(); if (state < PTHREAD_CANCEL_ENABLE || state > PTHREAD_CANCEL_DISABLE) @@ -42,9 +51,9 @@ int __pthread_setcancelstate(int state, int * oldstate) __pthread_do_exit(PTHREAD_CANCELED, CURRENT_STACK_FRAME); return 0; } -strong_alias (__pthread_setcancelstate, pthread_setcancelstate) +libpthread_hidden_def(pthread_setcancelstate) -int __pthread_setcanceltype(int type, int * oldtype) +int pthread_setcanceltype(int type, int * oldtype) { pthread_descr self = thread_self(); if (type < PTHREAD_CANCEL_DEFERRED || type > PTHREAD_CANCEL_ASYNCHRONOUS) @@ -57,33 +66,7 @@ int __pthread_setcanceltype(int type, int * oldtype) __pthread_do_exit(PTHREAD_CANCELED, CURRENT_STACK_FRAME); return 0; } -strong_alias (__pthread_setcanceltype, pthread_setcanceltype) - - -/* The next two functions are similar to pthread_setcanceltype() but - more specialized for the use in the cancelable functions like write(). - They do not need to check parameters etc. */ -int -attribute_hidden -__pthread_enable_asynccancel (void) -{ - pthread_descr self = thread_self(); - int oldtype = THREAD_GETMEM(self, p_canceltype); - THREAD_SETMEM(self, p_canceltype, PTHREAD_CANCEL_ASYNCHRONOUS); - if (__builtin_expect (THREAD_GETMEM(self, p_canceled), 0) && - THREAD_GETMEM(self, p_cancelstate) == PTHREAD_CANCEL_ENABLE) - __pthread_do_exit(PTHREAD_CANCELED, CURRENT_STACK_FRAME); - return oldtype; -} - -void -internal_function attribute_hidden -__pthread_disable_asynccancel (int oldtype) -{ - pthread_descr self = thread_self(); - THREAD_SETMEM(self, p_canceltype, oldtype); -} - +libpthread_hidden_def(pthread_setcanceltype) int pthread_cancel(pthread_t thread) { @@ -184,6 +167,7 @@ void _pthread_cleanup_push_defer(struct _pthread_cleanup_buffer * buffer, THREAD_SETMEM(self, p_canceltype, PTHREAD_CANCEL_DEFERRED); THREAD_SETMEM(self, p_cleanup, buffer); } +strong_alias(_pthread_cleanup_push_defer,__pthread_cleanup_push_defer) void _pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer * buffer, int execute) @@ -197,36 +181,26 @@ void _pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer * buffer, THREAD_GETMEM(self, p_canceltype) == PTHREAD_CANCEL_ASYNCHRONOUS) __pthread_do_exit(PTHREAD_CANCELED, CURRENT_STACK_FRAME); } +strong_alias(_pthread_cleanup_pop_restore,__pthread_cleanup_pop_restore) + -extern void __rpc_thread_destroy(void); void __pthread_perform_cleanup(char *currentframe) { pthread_descr self = thread_self(); - struct _pthread_cleanup_buffer *c = THREAD_GETMEM(self, p_cleanup); - struct _pthread_cleanup_buffer *last; - - if (c != NULL) - while (FRAME_LEFT (currentframe, c)) - { - last = c; - c = c->__prev; - - if (c == NULL || FRAME_LEFT (last, c)) - { - c = NULL; - break; - } - } - - while (c != NULL) - { - c->__routine(c->__arg); + struct _pthread_cleanup_buffer * c; - last = c; - c = c->__prev; - - if (FRAME_LEFT (last, c)) + for (c = THREAD_GETMEM(self, p_cleanup); c != NULL; c = c->__prev) + { +#ifdef _STACK_GROWS_DOWN + if ((char *) c <= currentframe) break; +#elif defined _STACK_GROWS_UP + if ((char *) c >= currentframe) + break; +#else +# error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP" +#endif + c->__routine(c->__arg); } #ifdef __UCLIBC_HAS_RPC__ @@ -235,3 +209,11 @@ void __pthread_perform_cleanup(char *currentframe) __rpc_thread_destroy (); #endif } + +#ifndef __PIC__ +/* We need a hook to force the cancellation wrappers to be linked in when + static libpthread is used. */ +extern const char __pthread_provide_wrappers; +static const char *const __pthread_require_wrappers = + &__pthread_provide_wrappers; +#endif -- cgit v1.2.3