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llvm-project/llvm/lib/Support/Unix
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Vedant Kumar 4624e83ce7 [Signal] Allow llvm clients to opt into one-shot SIGPIPE handling 
Allow clients of the llvm library to opt-in to one-shot SIGPIPE
handling, instead of forcing them to undo llvm's SIGPIPE handler
registration (which is brittle).

The current behavior is preserved for all llvm-derived tools (except
lldb) by means of a default-`true` flag in the InitLLVM constructor.

This prevents "IO error" crashes in long-lived processes (lldb is the
motivating example) which both a) load llvm as a dynamic library and b)
*really* need to ignore SIGPIPE.

As llvm signal handlers can be installed when calling into libclang
(say, via RemoveFileOnSignal), thereby overriding a previous SIG_IGN for
SIGPIPE, there is no clean way to opt-out of "exit-on-SIGPIPE" in the
current model.

Differential Revision: https://reviews.llvm.org/D70277
 		2019-11-18 10:27:27 -08:00
..
COM.inc Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
DynamicLibrary.inc Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Host.inc Use AIX version detection at LLVM run-time 2019-03-13 00:12:43 +00:00
Memory.inc [Alignment][NFC] Move and type functions from MathExtras to Alignment 2019-10-14 13:14:34 +00:00
Path.inc Avoid duplicate exe_path definition on recent FreeBSD 2019-11-18 08:51:22 -05:00
Process.inc [Support] Replace sys::Mutex with their standard equivalents. 2019-08-19 19:49:57 +00:00
Program.inc [Support][NFC] Fix error message for posix_spawn_file_actions_addopen failed call 2019-08-14 18:30:18 +00:00
README.txt
…
Signals.inc [Signal] Allow llvm clients to opt into one-shot SIGPIPE handling 2019-11-18 10:27:27 -08:00
ThreadLocal.inc Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Threading.inc Reland "[Support] Add a way to run a function on a detached thread"" 2019-10-23 15:51:44 +02:00
Unix.h Reland "[Support] Add a way to run a function on a detached thread"" 2019-10-23 15:51:44 +02:00
Watchdog.inc Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00

README.txt 

llvm/lib/Support/Unix README
===========================

This directory provides implementations of the lib/System classes that
are common to two or more variants of UNIX. For example, the directory
structure underneath this directory could look like this:

Unix           - only code that is truly generic to all UNIX platforms
  Posix        - code that is specific to Posix variants of UNIX
  SUS          - code that is specific to the Single Unix Specification
  SysV         - code that is specific to System V variants of UNIX

As a rule, only those directories actually needing to be created should be
created. Also, further subdirectories could be created to reflect versions of
the various standards. For example, under SUS there could be v1, v2, and v3
subdirectories to reflect the three major versions of SUS.