llvm-project/llvm/lib/Support/Unix
Rafael Espindola e79a87226a Improvements to unique_file and createUniqueDirectory.
* Don't try to create parent directories in unique_file. It had two problem:
   * It violates the contract that it is atomic. If the directory creation
     success and the file creation fails, we would return an error but the
     file system was modified.
   * When creating a temporary file clang would have to first check if the
     parent directory existed or not to avoid creating one when it was not
     supposed to.

* More efficient implementations of createUniqueDirectory and the unique_file
  that produces only the file name. Now all 3 just call into a static
  function passing what they want (name, file or directory).

Clang also has to be updated, so tests might fail if a bot picks up this commit
and not the corresponding clang one.

llvm-svn: 185126
2013-06-28 03:48:47 +00:00
..
Host.inc revert r147542 after comments from Joerg Sonnenberger 2012-01-05 18:28:46 +00:00
Memory.inc Remove declaration of __clear_cache for __APPLE__. <rdar://problem/13924072> 2013-05-19 20:33:51 +00:00
Mutex.inc Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
Path.inc Improvements to unique_file and createUniqueDirectory. 2013-06-28 03:48:47 +00:00
Process.inc Remove MSan hack that is no longer needed. 2013-06-20 14:19:10 +00:00
Program.inc Replace use of PathV1.h in Program.cpp. 2013-06-14 19:38:45 +00:00
README.txt
RWMutex.inc Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
Signals.inc Don't use PathV1.h in Signals.h. 2013-06-13 21:16:58 +00:00
ThreadLocal.inc Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
TimeValue.inc Fix initialization-order bug in llvm::Support::TimeValue. TimeValue::now() is explicitly called during module initialization of lib/Support/Process.cpp. It reads the field of global object PosixZeroTime, which is not guaranteed to be initialized at this point. Found by AddressSanitizer with -fsanitize=init-order option. 2013-02-19 11:35:39 +00:00
Unix.h Sort includes for all of the .h files under the 'lib' tree. These were 2012-12-04 07:12:27 +00:00
Watchdog.inc Add a new watchdog timer interface. The interface does not permit handling timeouts, so 2013-03-26 01:27:52 +00:00
system_error.inc Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +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.