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update

This commit is contained in:
Christopher Faylor 2002-08-03 23:34:01 +00:00
parent eb7368d4ac
commit 2389d0af46
1 changed files with 5 additions and 1 deletions
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winsup/cygwin/how-signals-work.txt
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@ -77,7 +77,11 @@ function that is known to block (such as _read()), usually by calling
sets up information about the current stack frame of an executing cygwin
process. Any function which uses 'sigframe thisframe' should be signal
aware. It should detect when a signal has arrived and return
immediately.
immediately. This method is also used throughout the DLL to ensure
accurate frame info for the executing function. So, you'll see it
sprinkled liberally throughout the DLL, usually at places where
empirical tests have indicated problems finding this address via the
brute force method stack walking method employed in setup_handler.
So, if mainframe is active, that means that we have good information
about the state of the main thread. Cygwin uses the stack frame info