NAME
pthreadattrsetstackaddr, pthreadattrgetstackaddr - set/get stack address attribute in thread attributes object SYNOPSIS
#include
int pthreadattrsetstackaddr(pthreadattrt *attr, void *stackaddr); int pthreadattrgetstackaddr(pthreadattrt *attr, void **stackaddr); Compile and link with -pthread. DESCRIPTION These functions are obsolete: do not use them. Use pthreadattrset‐ stack(3) and pthreadattrgetstack(3) instead. The pthreadattrsetstackaddr() function sets the stack address attribute of the thread attributes object referred to by attr to the value specified in stackaddr. This attribute specifies the location of the stack that should be used by a thread that is created using the thread attributes object attr. stackaddr should point to a buffer of at least PTHREADSTACKMIN bytes that was allocated by the caller. The pages of the allocated buffer should be both readable and writable. The pthreadattrgetstackaddr() function returns the stack address attribute of the thread attributes object referred to by attr in the buffer pointed to by stackaddr. RETURN VALUE On success, these functions return 0; on error, they return a nonzero error number. ERRORS No errors are defined (but applications should nevertheless handle a possible error return). VERSIONS These functions are provided by glibc since version 2.1. ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). ┌─────────────────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├─────────────────────────────┼───────────────┼─────────┤
│pthreadattrsetstackaddr(), │ Thread safety │ MT-Safe │ │pthreadattrgetstackaddr() │ │ │ └─────────────────────────────┴───────────────┴─────────┘ CONFORMING TO
POSIX.1-2001 specifies these functions but marks them as obsolete.
POSIX.1-2008 removes the specification of these functions. NOTES Do not use these functions! They cannot be portably used, since they provide no way of specifying the direction of growth or the range of the stack. For example, on architectures with a stack that grows down‐ ward, stackaddr specifies the next address past the highest address of the allocated stack area. However, on architectures with a stack that grows upward, stackaddr specifies the lowest address in the allocated stack area. By contrast, the stackaddr used by pthreadattrset‐ stack(3) and pthreadattrgetstack(3), is always a pointer to the low‐ est address in the allocated stack area (and the stacksize argument specifies the range of the stack). SEE ALSO pthreadattrinit(3), pthreadattrsetstack(3), pthreadattrsetstack‐ size(3), pthreadcreate(3), pthreads(7) COLOPHON
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Linux 2008-10-24 PTHREADATTRSETSTACKADDR(3)