diff options
Diffstat (limited to 'linuxthreads')
| -rw-r--r-- | linuxthreads/ChangeLog | 11 | ||||
| -rw-r--r-- | linuxthreads/descr.h | 67 | ||||
| -rw-r--r-- | linuxthreads/internals.h | 65 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/i386/tls.h | 13 |
4 files changed, 87 insertions, 69 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index a4ab63ca2e..49f1aa752a 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,3 +1,14 @@ +2002-02-07 Ulrich Drepper <drepper@redhat.com> + + * internals.h: Move declarations/definitions of + __pthread_initial_thread_bos, __pthread_initial_thread, + __pthread_manager_thread_bos, __pthread_manager_thread_tos, + __pthread_manager_thread, __pthread_nonstandard_stacks, STACK_SIZE, + CURRENT_STACK_FRAME, __pthread_find_self, and thread_self... + * descr.h: ...here. + * sysdeps/i386/tls.h: Add TLS definitions also for !FLOATING_STACKS. + Define THREAD_GETMEM accordingly. + 2002-02-06 Ulrich Drepper <drepper@redhat.com> * sysdeps/i386/tls.h: Include <stddef.h> for size_t. diff --git a/linuxthreads/descr.h b/linuxthreads/descr.h index 4cfad89dcb..a2cddb1212 100644 --- a/linuxthreads/descr.h +++ b/linuxthreads/descr.h @@ -165,4 +165,71 @@ struct _pthread_descr_struct { 32 bytes might give better cache utilization. */ + + +/* Limit between the stack of the initial thread (above) and the + stacks of other threads (below). Aligned on a STACK_SIZE boundary. + Initially 0, meaning that the current thread is (by definition) + the initial thread. */ + +extern char *__pthread_initial_thread_bos; + +/* Descriptor of the initial thread */ + +extern struct _pthread_descr_struct __pthread_initial_thread; + +/* Limits of the thread manager stack. */ + +extern char *__pthread_manager_thread_bos; +extern char *__pthread_manager_thread_tos; + +/* Descriptor of the manager thread */ + +extern struct _pthread_descr_struct __pthread_manager_thread; + +/* Indicate whether at least one thread has a user-defined stack (if 1), + or all threads have stacks supplied by LinuxThreads (if 0). */ + +extern int __pthread_nonstandard_stacks; + +/* The max size of the thread stack segments. If the default + THREAD_SELF implementation is used, this must be a power of two and + a multiple of PAGE_SIZE. */ +#ifndef STACK_SIZE +#define STACK_SIZE (2 * 1024 * 1024) +#endif + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#ifndef CURRENT_STACK_FRAME +#define CURRENT_STACK_FRAME ({ char __csf; &__csf; }) +#endif + +/* Recover thread descriptor for the current thread */ + +extern pthread_descr __pthread_find_self (void) __attribute__ ((const)); + +static inline pthread_descr thread_self (void) __attribute__ ((const)); +static inline pthread_descr thread_self (void) +{ +#ifdef THREAD_SELF + return THREAD_SELF; +#else + char *sp = CURRENT_STACK_FRAME; + if (sp >= __pthread_initial_thread_bos) + return &__pthread_initial_thread; + else if (sp >= __pthread_manager_thread_bos + && sp < __pthread_manager_thread_tos) + return &__pthread_manager_thread; + else if (__pthread_nonstandard_stacks) + return __pthread_find_self(); + else +#ifdef _STACK_GROWS_DOWN + return (pthread_descr)(((unsigned long)sp | (STACK_SIZE-1))+1) - 1; +#else + return (pthread_descr)((unsigned long)sp &~ (STACK_SIZE-1)); +#endif +#endif +} + #endif /* descr.h */ diff --git a/linuxthreads/internals.h b/linuxthreads/internals.h index e1768b4a1f..056e36d885 100644 --- a/linuxthreads/internals.h +++ b/linuxthreads/internals.h @@ -110,30 +110,10 @@ extern int __pthread_sig_debug; extern struct pthread_handle_struct __pthread_handles[PTHREAD_THREADS_MAX]; -/* Descriptor of the initial thread */ - -extern struct _pthread_descr_struct __pthread_initial_thread; - -/* Descriptor of the manager thread */ - -extern struct _pthread_descr_struct __pthread_manager_thread; - /* Descriptor of the main thread */ extern pthread_descr __pthread_main_thread; -/* Limit between the stack of the initial thread (above) and the - stacks of other threads (below). Aligned on a STACK_SIZE boundary. - Initially 0, meaning that the current thread is (by definition) - the initial thread. */ - -extern char *__pthread_initial_thread_bos; - -/* Indicate whether at least one thread has a user-defined stack (if 1), - or all threads have stacks supplied by LinuxThreads (if 0). */ - -extern int __pthread_nonstandard_stacks; - /* File descriptor for sending requests to the thread manager. Initially -1, meaning that __pthread_initialize_manager must be called. */ @@ -143,11 +123,6 @@ extern int __pthread_manager_request; extern int __pthread_manager_reader; -/* Limits of the thread manager stack. */ - -extern char *__pthread_manager_thread_bos; -extern char *__pthread_manager_thread_tos; - #ifdef FLOATING_STACKS /* Maximum stack size. */ extern size_t __pthread_max_stacksize; @@ -202,13 +177,6 @@ static inline int nonexisting_handle(pthread_handle h, pthread_t id) #define PAGE_SIZE (sysconf (_SC_PAGE_SIZE)) #endif -/* The max size of the thread stack segments. If the default - THREAD_SELF implementation is used, this must be a power of two and - a multiple of PAGE_SIZE. */ -#ifndef STACK_SIZE -#define STACK_SIZE (2 * 1024 * 1024) -#endif - /* The initial size of the thread stack. Must be a multiple of PAGE_SIZE. */ #ifndef INITIAL_STACK_SIZE #define INITIAL_STACK_SIZE (4 * PAGE_SIZE) @@ -227,39 +195,6 @@ static inline int nonexisting_handle(pthread_handle h, pthread_t id) #define THREAD_STACK_START_ADDRESS __pthread_initial_thread_bos #endif -/* Get some notion of the current stack. Need not be exactly the top - of the stack, just something somewhere in the current frame. */ -#ifndef CURRENT_STACK_FRAME -#define CURRENT_STACK_FRAME ({ char __csf; &__csf; }) -#endif - -/* Recover thread descriptor for the current thread */ - -extern pthread_descr __pthread_find_self (void) __attribute__ ((const)); - -static inline pthread_descr thread_self (void) __attribute__ ((const)); -static inline pthread_descr thread_self (void) -{ -#ifdef THREAD_SELF - return THREAD_SELF; -#else - char *sp = CURRENT_STACK_FRAME; - if (sp >= __pthread_initial_thread_bos) - return &__pthread_initial_thread; - else if (sp >= __pthread_manager_thread_bos - && sp < __pthread_manager_thread_tos) - return &__pthread_manager_thread; - else if (__pthread_nonstandard_stacks) - return __pthread_find_self(); - else -#ifdef _STACK_GROWS_DOWN - return (pthread_descr)(((unsigned long)sp | (STACK_SIZE-1))+1) - 1; -#else - return (pthread_descr)((unsigned long)sp &~ (STACK_SIZE-1)); -#endif -#endif -} - /* If MEMORY_BARRIER isn't defined in pt-machine.h, assume the architecture doesn't need a memory barrier instruction (e.g. Intel x86). Some architectures distinguish between full, read and write barriers. */ diff --git a/linuxthreads/sysdeps/i386/tls.h b/linuxthreads/sysdeps/i386/tls.h index 870832c6f0..ed5e634a82 100644 --- a/linuxthreads/sysdeps/i386/tls.h +++ b/linuxthreads/sysdeps/i386/tls.h @@ -42,7 +42,7 @@ typedef struct /* We can support TLS only if the floating-stack support is available. */ -#if FLOATING_STACKS && defined HAVE_TLS_SUPPORT +#ifdef HAVE_TLS_SUPPORT /* Get system call information. */ # include <sysdep.h> @@ -94,11 +94,16 @@ typedef struct /* Return the address of the dtv for the current thread. */ -# define THREAD_DTV() \ +# if FLOATING_STACKS +# define THREAD_DTV() \ ({ struct _pthread_descr_struct *__descr; \ THREAD_GETMEM (__descr, p_header.data.dtvp); }) +# else +# define THREAD_DTV() \ + ({ struct _pthread_descr_struct *__descr = thread_self (); \ + THREAD_GETMEM (__descr, p_header.data.dtvp); }) +# endif - -#endif +#endif /* HAVE_TLS_SUPPORT */ #endif /* tls.h */ |