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1998-03-13 00:46  Ulrich Drepper  <drepper@cygnus.com>

	* attr.c: Implement pthread_attr_[gs]etguardsize,
	pthread_attr_[gs]setstackaddr, pthread_attr_[gs]etstacksize.
	Change pthread_attr_init to have two interfaces.
	* internals.h (struct _pthread_descr_struct): Add new fields for
	above functions.
	* libpthread.map: Add names in GLIBC_2.1 section.
	* manager.c (pthread_handle_create): Implement guardsize and
	user stack.
	(pthread_free): Likewise.
	* pthread.c (pthread_create): Add new interface for changed
	pthread_attr_t.
	* sysdeps/pthread/pthread.h: Add prototypes for new functions.
	* sysdeps/unix/sysv/linux/bits/local_lim.h: Add definition of
	PTHREAD_STACK_MIN.

	* manager.c: Enable resetting of the thread scheduling policy
	to SCHED_OTHER when the parent thread has a different one.
This commit is contained in:
Ulrich Drepper
1998-03-13 00:56:15 +00:00
parent 441e41325e
commit 5d409851a3
9 changed files with 292 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
linuxthreads/sysdeps/pthread/pthread.h
View File

@ -119,6 +119,10 @@ typedef struct
struct sched_param schedparam;
int inheritsched;
int scope;
size_t guardsize;
int stackaddr_set;
void *stackaddr;
size_t stacksize;
} pthread_attr_t;
enum
@ -272,6 +276,49 @@ extern int pthread_attr_setscope __P ((pthread_attr_t *__attr, int __scope));
extern int pthread_attr_getscope __P ((__const pthread_attr_t *__attr,
int *__scope));
#ifdef __USE_UNIX98
/* Set the size of the guard area at the bottom of the thread. */
extern int __pthread_attr_setguardsize __P ((pthread_attr_t *__attr,
size_t __guardsize));
extern int pthread_attr_setguardsize __P ((pthread_attr_t *__attr,
size_t __guardsize));
/* Get the size of the guard area at the bottom of the thread. */
extern int __pthread_attr_getguardsize __P ((__const pthread_attr_t *__attr,
size_t *__guardsize));
extern int pthread_attr_getguardsize __P ((__const pthread_attr_t *__attr,
size_t *__guardsize));
/* Set the starting address of the stack of the thread to be created.
Depending on whether the stack grows up or doen the value must either
be higher or lower than all the address in the memory block. The
minimal size of the block must be PTHREAD_STACK_SIZE. */
extern int __pthread_attr_setstackaddr __P ((pthread_attr_t *__attr,
void *__stackaddr));
extern int pthread_attr_setstackaddr __P ((pthread_attr_t *__attr,
void *__stackaddr));
/* Return the previously set address for the stack. */
extern int __pthread_attr_getstackaddr __P ((__const pthread_attr_t *__attr,
void **__stackaddr));
extern int pthread_attr_getstackaddr __P ((__const pthread_attr_t *__attr,
void **__stackaddr));
/* Add information about the minimum stack size needed for the thread
to be started. This size must never be less than PTHREAD_STACK_SIZE
and must also not exceed the system limits. */
extern int __pthread_attr_setstacksize __P ((pthread_attr_t *__attr,
size_t __stacksize));
extern int pthread_attr_setstacksize __P ((pthread_attr_t *__attr,
size_t __stacksize));
/* Return the currently used minimal stack size. */
extern int __pthread_attr_getstacksize __P ((__const pthread_attr_t *__attr,
size_t *__stacksize));
extern int pthread_attr_getstacksize __P ((__const pthread_attr_t *__attr,
size_t *__stacksize));
#endif
/* Functions for scheduling control. */
/* Set the scheduling parameters for TARGET_THREAD according to POLICY
@ -284,6 +331,15 @@ extern int pthread_getschedparam __P ((pthread_t __target_thread,
int *__policy,
struct sched_param *__param));
#ifdef __USE_UNIX98
/* Determine level of concurrency. */
extern int __pthread_getconcurrency __P ((void));
extern int pthread_getconcurrency __P ((void));
/* Set new concurrency level to LEVEL. */
extern int __pthread_setconcurrency __P ((int __level));
extern int pthread_setconcurrency __P ((int __level));
#endif
/* Functions for mutex handling. */