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strace and sigprocmask
- From: ht at inf dot ed dot ac dot uk (Henry S. Thompson)
- To: cygwin at cygwin dot com
- Date: Fri, 09 May 2014 13:55:51 +0100
- Subject: strace and sigprocmask
- Authentication-results: sourceware.org; auth=none
Running on Windows 8.1, with 32-bit Cygwin v1.7.29.
I've taken straces of a problematic area of xemacs, tidied them, and
am trying to locate significant differences.
I'm seeing something I don't understand, which isn't causing a crash
so probably isn't significant, but I'd like to understand it better.
strace 1 has:
[main] PID1 sigprocmask: 0 = sigprocmask(2647444, 0xNULL, 0xNULL)
where strace 2 has:
[main] PID1 sigprocmask: 0 = sigprocmask(2649272, 0xNULL, 0xADDR)
Similar lines appear frequently in both straces.
Either I don't understand strace output, or this is bizarre -- the
first arg to sigprocmask should always be 0, 1 or 2, right?
I'd welcome any help in understanding how I should be reading this,
and more generally, how I could have found the answer to my question
Henry S. Thompson, School of Informatics, University of Edinburgh
10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
Fax: (44) 131 650-4587, e-mail: firstname.lastname@example.org
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