- restart syscalls which return ERESETARTSYS
- make code to restart a syscall common
- keep a process-wide pending signal set to store as-yet
undelivered signals (only used in 2.4 mode; TODO: siginfo, queues)
- make execve work a bit better - it is impossible to recover from
execve failing, so we try to check that it will before running the
syscall itself (also fixes bug with SuSE 8.2 kernel)
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1964
a logfile for that pid already exists. This may happen for programs
started during system boot which will tend to get the same pid each boot.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1928
with the aim of making it more robust, more correct and perhaps faster.
This patch removes the need to poll blocking syscalls, by adding a proxy
LWP for each application thread. This LWP is a kernel thread whose job
is to run all (potentially) blocking syscalls, and also to handle signals.
This allows the kernel to do more of the work of dealing with signals,
so on kernels which do this properly (2.6), Valgrind's behavious is a
lot more posix compliant. On base 2.4 kernels, we emulate some of the
missing 2.6 functionality.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1918
