06-28-2012
We need to see more context.
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LEARN ABOUT HPUX
swapcontext
makecontext(2) System Calls Manual makecontext(2)
NAME
makecontext(), swapcontext() - manipulate user contexts
SYNOPSIS
Deprecated
Deprecated
DESCRIPTION
The function modifies the context specified by ucp, which has been initialized using When this context is resumed using or program execu-
tion continues by calling passing it the arguments that follow argc in the call.
Before a call is made to the context being modified should have a stack allocated for it. The value of argc must match the number of inte-
ger arguments passed to otherwise the behavior is undefined.
The uc_link member is used to determine the context that will be resumed when the context being modified by returns. The uc_link member
should be initialized prior to the call to
The function saves the current context in the context structure pointed to by oucp and sets the context to the context structure pointed to
by ucp.
RETURN VALUE
On successful completion, returns 0. Otherwise, -1 is returned and is set to indicate the error.
WARNINGS
and are deprecated and should be used only by legacy applications.
Context APIs are not recommended due to possible compatibility problems from release to release, because context APIs are very architec-
ture-specific. The context APIs "expose" the architecture to the application, such that the application may not be compatible with all
releases.
If you must use context APIs, be aware of the following:
o Do not copy the context yourself. It is not contiguous. The context may have pointers that may point back to the original context
rather than in the copied context; hence, it will be broken.
o The size of the context will vary in length from release to release.
ERRORS
The and functions will fail if:
[ENOMEM] The ucp argument does not have enough stack left to complete the operation.
SEE ALSO
exit(2), getcontext(2), sigaction(2), sigprocmask(2), <ucontext.h>.
Deprecated makecontext(2)