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Code Issues Projects Releases Packages Wiki Activity Actions 15

mass changes; fix titles; add examples; correct typos; clarifications;

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unified style; etc.
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Guido van Rossum 1995-03-17 16:07:09 +00:00
parent 7760cdea81
commit 470be14c8a
131 changed files with 1960 additions and 1114 deletions
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13
Doc/lib/libsignal.tex
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@ -20,7 +20,7 @@ the Python user is concerned, they can only occur between the
``atomic'' instructions of the Python interpreter. This means that
signals arriving during long calculations implemented purely in C
(e.g.\ regular expression matches on large bodies of text) may be
delayed for an arbitrary time.
delayed for an arbitrary amount of time.
\item
When a signal arrives during an I/O operation, it is possible that the
@ -48,8 +48,10 @@ threads simultaneously is:\ always perform \code{signal()} operations
in the main thread of execution. Any thread can perform an
\code{alarm()}, \code{getsignal()}, or \code{pause()}; only the main
thread can set a new signal handler, and the main thread will be the
only one to receive signals. This means that signals can't be used as
a means of interthread communication. Use locks instead.
only one to receive signals (this is enforced by the Python signal
module, even if the underlying thread implementation supports sending
signals to individual threads). This means that signals can't be used
as a means of interthread communication. Use locks instead.
\end{itemize}
@ -126,4 +128,9 @@ The signal module defines the following functions:
When threads are enabled, this function can only be called from the
main thread; attempting to call it from other threads will cause a
\code{ValueError} exception to be raised.
The \var{handler} is called with two arguments: the signal number
and the current stack frame (\code{None} or a frame object; see the
reference manual for a description of frame objects).
\obindex{frame}
\end{funcdesc}