1. 13 9月, 2018 1 次提交
    • R
      reduce spurious inclusion of libc.h · 5ce37379
      Rich Felker 提交于
      libc.h was intended to be a header for access to global libc state and
      related interfaces, but ended up included all over the place because
      it was the way to get the weak_alias macro. most of the inclusions
      removed here are places where weak_alias was needed. a few were
      recently introduced for hidden. some go all the way back to when
      libc.h defined CANCELPT_BEGIN and _END, and all (wrongly implemented)
      cancellation points had to include it.
      
      remaining spurious users are mostly callers of the LOCK/UNLOCK macros
      and files that use the LFS64 macro to define the awful *64 aliases.
      
      in a few places, new inclusion of libc.h is added because several
      internal headers no longer implicitly include libc.h.
      
      declarations for __lockfile and __unlockfile are moved from libc.h to
      stdio_impl.h so that the latter does not need libc.h. putting them in
      libc.h made no sense at all, since the macros in stdio_impl.h are
      needed to use them correctly anyway.
      5ce37379
  2. 12 12月, 2013 1 次提交
  3. 29 1月, 2012 1 次提交
  4. 17 4月, 2011 1 次提交
    • R
      overhaul pthread cancellation · feee9890
      Rich Felker 提交于
      this patch improves the correctness, simplicity, and size of
      cancellation-related code. modulo any small errors, it should now be
      completely conformant, safe, and resource-leak free.
      
      the notion of entering and exiting cancellation-point context has been
      completely eliminated and replaced with alternative syscall assembly
      code for cancellable syscalls. the assembly is responsible for setting
      up execution context information (stack pointer and address of the
      syscall instruction) which the cancellation signal handler can use to
      determine whether the interrupted code was in a cancellable state.
      
      these changes eliminate race conditions in the previous generation of
      cancellation handling code (whereby a cancellation request received
      just prior to the syscall would not be processed, leaving the syscall
      to block, potentially indefinitely), and remedy an issue where
      non-cancellable syscalls made from signal handlers became cancellable
      if the signal handler interrupted a cancellation point.
      
      x86_64 asm is untested and may need a second try to get it right.
      feee9890
  5. 20 3月, 2011 1 次提交
  6. 12 2月, 2011 1 次提交