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thr_stksegment - get thread stack address and size
cc -mt [ flag... ] file...[ library... ] #include <thread.h> #include <signal.h> int thr_stksegment(stack_t *ss);
The thr_stksegment() function returns, in its stack_t argument, the address and size of the calling thread's stack.
The stack_t structure includes the following members:
void *ss_sp size_t ss_size int ss_flags
On successful return from thr_stksegment(), ss_sp contains the high address of the caller's stack and ss_size contains the size of the stack in bytes. The ss_flags member is always 0. Note that the meaning of ss_sp is reversed from other uses of stack_t such as sigaltstack(2) where ss_sp is the low address.
The stack information provided by thr_stksegment() is typically used by debuggers, garbage collectors, and similar applications. Most applications should not require such information.
The thr_stksegment() function returns 0 if the thread stack address and size were successfully retrieved. Otherwise, it returns a non-zero error value.
The thr_stksegment() function will fail if:
EAGAIN
See attributes(5) for descriptions of the following attributes:
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sigaltstack(2), thr_create(3C), attributes(5)
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