mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-22 22:22:23 +00:00
146 lines
4.8 KiB
Diff
146 lines
4.8 KiB
Diff
--- a/libpthread/linuxthreads.old/attr.c 2006-01-24 12:41:01.000000000 -0500
|
|
+++ b/libpthread/linuxthreads.old/attr.c 2008-02-10 11:35:32.000000000 -0500
|
|
@@ -25,6 +25,14 @@
|
|
#include "pthread.h"
|
|
#include "internals.h"
|
|
|
|
+#include <sys/resource.h>
|
|
+#include <inttypes.h>
|
|
+#include <stdio.h>
|
|
+#include <stdio_ext.h>
|
|
+#include <stdlib.h>
|
|
+#include <sys/resource.h>
|
|
+
|
|
+
|
|
/* NOTE: With uClibc I don't think we need this versioning stuff.
|
|
* Therefore, define the function pthread_attr_init() here using
|
|
* a strong symbol. */
|
|
@@ -209,4 +217,94 @@ int __pthread_attr_getstacksize(const pt
|
|
*stacksize = attr->__stacksize;
|
|
return 0;
|
|
}
|
|
+
|
|
+
|
|
+extern int *__libc_stack_end;
|
|
+
|
|
weak_alias (__pthread_attr_getstacksize, pthread_attr_getstacksize)
|
|
+void* pthread_getattr_np(pthread_t thread, pthread_attr_t *attr)
|
|
+{
|
|
+ static void *stackBase = 0;
|
|
+ static size_t stackSize = 0;
|
|
+ int ret = 0;
|
|
+ /* Stack size limit. */
|
|
+ struct rlimit rl;
|
|
+
|
|
+ /* The safest way to get the top of the stack is to read
|
|
+ /proc/self/maps and locate the line into which
|
|
+ __libc_stack_end falls. */
|
|
+ FILE *fp = fopen("/proc/self/maps", "rc");
|
|
+ if (fp == NULL)
|
|
+ ret = errno;
|
|
+ /* We need the limit of the stack in any case. */
|
|
+ else if (getrlimit (RLIMIT_STACK, &rl) != 0)
|
|
+ ret = errno;
|
|
+ else {
|
|
+ /* We need no locking. */
|
|
+ __fsetlocking (fp, FSETLOCKING_BYCALLER);
|
|
+
|
|
+ /* Until we found an entry (which should always be the case)
|
|
+ mark the result as a failure. */
|
|
+ ret = ENOENT;
|
|
+
|
|
+ char *line = NULL;
|
|
+ size_t linelen = 0;
|
|
+ uintptr_t last_to = 0;
|
|
+
|
|
+ while (! feof_unlocked (fp)) {
|
|
+ if (getdelim (&line, &linelen, '\n', fp) <= 0)
|
|
+ break;
|
|
+
|
|
+ uintptr_t from;
|
|
+ uintptr_t to;
|
|
+ if (sscanf (line, "%x-%x", &from, &to) != 2)
|
|
+ continue;
|
|
+ if (from <= (uintptr_t) __libc_stack_end
|
|
+ && (uintptr_t) __libc_stack_end < to) {
|
|
+ /* Found the entry. Now we have the info we need. */
|
|
+ attr->__stacksize = rl.rlim_cur;
|
|
+#ifdef _STACK_GROWS_UP
|
|
+ /* Don't check to enforce a limit on the __stacksize */
|
|
+ attr->__stackaddr = (void *) from;
|
|
+#else
|
|
+ attr->__stackaddr = (void *) to;
|
|
+
|
|
+ /* The limit might be too high. */
|
|
+ if ((size_t) attr->__stacksize > (size_t) attr->__stackaddr - last_to)
|
|
+ attr->__stacksize = (size_t) attr->__stackaddr - last_to;
|
|
+#endif
|
|
+
|
|
+ /* We succeed and no need to look further. */
|
|
+ ret = 0;
|
|
+ break;
|
|
+ }
|
|
+ last_to = to;
|
|
+ }
|
|
+
|
|
+ fclose (fp);
|
|
+ free (line);
|
|
+ }
|
|
+#ifndef _STACK_GROWS_UP
|
|
+ stackBase = (char *) attr->__stackaddr - attr->__stacksize;
|
|
+#else
|
|
+ stackBase = attr->__stackaddr;
|
|
+#endif
|
|
+ stackSize = attr->__stacksize;
|
|
+ return (void*)(stackBase + stackSize);
|
|
+}
|
|
+
|
|
+int __pthread_attr_getstack (const pthread_attr_t *attr, void **stackaddr,
|
|
+ size_t *stacksize)
|
|
+{
|
|
+ /* XXX This function has a stupid definition. The standard specifies
|
|
+ no error value but what is if no stack address was set? We simply
|
|
+ return the value we have in the member. */
|
|
+#ifndef _STACK_GROWS_UP
|
|
+ *stackaddr = (char *) attr->__stackaddr - attr->__stacksize;
|
|
+#else
|
|
+ *stackaddr = attr->__stackaddr;
|
|
+#endif
|
|
+ *stacksize = attr->__stacksize;
|
|
+ return 0;
|
|
+}
|
|
+weak_alias (__pthread_attr_getstack, pthread_attr_getstack)
|
|
|
|
--- a/libpthread/linuxthreads.old/sysdeps/pthread/pthread.h 2006-12-07 22:19:36.000000000 -0500
|
|
+++ b/libpthread/linuxthreads.old/sysdeps/pthread/pthread.h 2008-02-10 11:42:35.000000000 -0500
|
|
@@ -288,15 +288,11 @@ extern int pthread_attr_getstacksize (__
|
|
__attr, size_t *__restrict __stacksize)
|
|
__THROW;
|
|
|
|
-#if 0
|
|
-/* Not yet implemented in uClibc! */
|
|
-
|
|
#ifdef __USE_GNU
|
|
/* Initialize thread attribute *ATTR with attributes corresponding to the
|
|
already running thread TH. It shall be called on unitialized ATTR
|
|
and destroyed with pthread_attr_destroy when no longer needed. */
|
|
-extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr) __THROW;
|
|
-#endif
|
|
+extern void* pthread_getattr_np(pthread_t thread, pthread_attr_t *attr);
|
|
#endif
|
|
|
|
/* Functions for scheduling control. */
|
|
@@ -599,6 +595,11 @@ extern int pthread_cancel (pthread_t __c
|
|
cancelled. */
|
|
extern void pthread_testcancel (void);
|
|
|
|
+/* Return the previously set address for the stack. */
|
|
+extern int pthread_attr_getstack (__const pthread_attr_t *__restrict __attr,
|
|
+ void **__restrict __stackaddr,
|
|
+ size_t *__restrict __stacksize) __THROW;
|
|
+
|
|
|
|
/* Install a cleanup handler: ROUTINE will be called with arguments ARG
|
|
when the thread is cancelled or calls pthread_exit. ROUTINE will also
|
|
|